Micro 12VDC Generator with a Cox .049 Sure Start Diesel Engine

thank you
somtimes the easy road is the one best walked

i could design my own inverter
but why would i some china man did it for me
and he made it so cheap that stealing it would make it more expencive

if it seems i can get more power from it i will upgrade to a 5A (or 10A) version

StevenStanleyBayes wrote:

Sorry. I have been on a cell phone. Everything got mixed up.  

I think they should not use the IC name for their board name but this is not our fault. Sorry.

However, you must realise I like your project and will never fight you. Also the more unsuccessful I am the more I like your design. When I am successful, I also like your design because your design is better and more customer friendly as well as more compact in size and more customer friendly.

i just saw this reply

dont feel bad
to be honnest i started working on mine becaus you started working on one
i slaped it together in around 1.5 week (2 weeks becaus of preplanning)

just becaus i was challanged

just 2 weeks ago it did use an external tank

if you did not come allong the project would not have started for 1 a 2 years
and it would not have looked as good

my point you were my muse for building mine faster

and for your project
why dont you try a diverent approce
try rubber wheels insted of a belt

the dynamo on rails
just press the wheels togetter and it works
it makes it smaller then belts and it does not wear as fast

robot797 wrote:thank you
somtimes the easy road is the one best walked

i could design my own inverter
but why would i some china man did it for me
and he made it so cheap that stealing it would make it more expencive

if it seems i can get more power from it i will upgrade to a 5A (or 10A) version

This is an excellent approach. Use 3A to get the things working. Then, you can always get a regulator for more A.

robot797 wrote:

StevenStanleyBayes wrote:

Sorry. I have been on a cell phone. Everything got mixed up.  

I think they should not use the IC name for their board name but this is not our fault. Sorry.

However, you must realise I like your project and will never fight you. Also the more unsuccessful I am the more I like your design. When I am successful, I also like your design because your design is better and more customer friendly as well as more compact in size and more customer friendly.

i just saw this reply

dont feel bad
to be honnest i started working on mine becaus you started working on one
i slaped it together in around 1.5 week (2 weeks becaus of preplanning)

just becaus i was challanged

just 2 weeks ago it did use an external tank

if you did not come allong the project would not have started for 1 a 2 years
and it would not have looked as good

my point you were my muse for building mine faster

and for your project
why dont you try a diverent approce
try rubber wheels insted of a belt

the dynamo on rails
just press the wheels togetter and it works
it makes it smaller then belts and it does not wear as fast

Thank you for the good words. You found the worst person in the world to use as a muse, though.

I got a 1L tank for a child bike from AliExpress. The position of the nipple is important : too high may flood the engine. The volume of the fuel and the gravity pushes more fuel. Too low, the suction may not pump fuel in and may be amount of fuel dependent.

I also got an external needle valve and barb hoses from AliExpress to regulate and shut down the fuel.

I hope I remember to post the links.

Your idea for rubber wheels instead of a belt is the best for this project. No accuracy needed. No belt jumos when released. I can even use only one wheel on the engine and use the axel, rotor, of the dynamo.

Moving the dynamo is nasty but the easiest as compared with other ways. Spring would also be easy.

I will definitely consider.

i just places the tank were i thought it looked good
and in my engine it worked perfectly


ps after i removed the factory defect in my engine
(it had 2 reeds stacked ontop of eachother)
i have been able to start it on nitro
it runs so fast that my dynamo started arcing
wont do that again
but fun to try

robot797 wrote:i just places the tank were i thought it looked good
and in my engine it worked perfectly


ps after i removed the factory defect in my engine
(it had 2 reeds stacked ontop of eachother)
i have been able to start it on nitro
it runs so fast that my dynamo started arcing
wont do that again
but fun to try

How did you run the engine on Nitro? Do you have a glow plug head?

i have no planes but like 10 or 15 cox engine
i once even build a hovercraft out one of them

but yea i swaped the diesel head for a glow head
and started it on my normal way

ps this is also the perfect way to find the setting of the engine (needle)

robot797 wrote:i have no planes but like 10 or 15 cox engine
i once even build a hovercraft out one of them

but yea i swaped the diesel head for a glow head
and started it on my normal way

ps this is also the perfect way to find the setting of the engine (needle)

The setting depends on the density of the fuel and the response of the engine depends on the fuel but they are oretty much the same or scaled. Good this engine works with a glow head, so I can always switch. What Nitri fuel have you used?

20% hpi Opel
Wiki leden oil

Sorry my mobile did something weird
20% hpi fuel
With added oil

robot797 wrote:Sorry my mobile did something weird
20% hpi fuel
With added oil

What is hpi?

Non Cox :

All items include taxes.

V Name : A Pair of Two 25CC Engines, Carburetors
Web Page : http://www.aliexpress.com/item/2500-25cc-Chain-saw-Carburetor-2-stroke-engine-2500-chainsaw-free-shipping/1952067732.html
Quantity : 2
Price per Unit : $12.99 US
Notes : Question asked to confirm the engines are equipped with carburetors.
Requirements and Customisation : None.

[ V RS555 Purchased Instead ] Name : Johnson Generator 24V Generator 140 Watts Peak Power 70 Watts Continuous
Web Page : http://www.ebay.com/itm/280776426221
Quantity : 1
Price per Unit : $23.95 US and $10.95 US for USPS First Class Mail
Notes : Seller asked to wave the mailing charge to Canada. Ask for attachment brackets and accessories, pulleys, belts, shaft extension. PURCHASED INSTEAD : http://www.ebay.com/itm/RS555-DC-Hobby-Motor-Turbine-Generator-12-V-6000-RPM-High-Torque-/301096305936?ssPageName=ADME:L:OC:CA:3160
Requirements and Customisation :

V Name : Set 7PCS / plastic pulley set / drive wheel / movable pulley / fixed pulley Accessories
Web Page : http://m.aliexpress.com/item/1969443104.html
Quantity : 1 Lot
Price per Unit : $15.97 for 1 Lot of 3 Sets of 7 per Set : 21 in all
Notes :
Requirements and Customisation :

V Name : 140mm x 5mm Automobile NBR O Rings Hole Sealing Gaskets Washers 10 Pcs
Web Page : http://www.aliexpress.com/item/140mm-x-5mm-Automobile-NBR-O-Rings-Hole-Sealing-Gaskets-Washers-10-Pcs/946983210.html
Quantity : 1 Set
Price per Unit : 7.99 US
Notes :
Requirements and Customisation :

V Name : 1pcs New DC 30V Analog Panel Volt Voltage Meter Voltmeter Gauge 85C1 0 30V Good
Web Page : http://www.ebay.com/itm/1pcs-New-DC-30V-Analog-Panel-Volt-Voltage-Meter-Voltmeter-Gauge-85C1-0-30V-Good/181561827950
Quantity : 1
Price per Unit : $3.70 US
Notes : Wrong size http://www.ebay.com/itm/New-Analog-Volt-Voltage-Panel-Meter-Voltmeter-0-30V-DC-91C4/261223811836 http://www.ebay.com/itm/New-Analog-Volt-Voltage-Panel-Meter-Voltmeter-0-30V-DC-91C4/261223811836. May wish to remember 50VDC Voltmeter : http://www.ebay.com/itm/261220220805
Requirements and Customisation : Size : 65mm, 56mm

V Name : 1 DC 15A Analog Panel AMP Current Meter Ammeter Gauge 85C1 White 0 15A DC
Web Page : http://www.ebay.com/itm/110951086483
Quantity : 1
Price per Unit : $0.99 US
Notes : There are 0 to 10ADC but more expensive.
Requirements and Customisation : Size : 64mm, 56mm, 61mm ( back ).

V Name : PC Chassie Fan
Web Page : http://www.aliexpress.com/snapshot/6418521429.html?orderId=65175261889488
Quantity : 2
Price per Unit : $2.89 US
Notes : Draws 150mA for the same amount of air flow.
Requirements and Customisation : None.

V Name : 1/4" BSPP Nickel Plated Brass Threaded Needle Valve
Web Page : http://www.ebay.com/itm/1-4-BSPP-Nickel-Plated-Brass-Threaded-Needle-Valve-/171258999765
Quantity : 2
Price per Unit : $3.96US
Notes : None.
Requirements and Customisation : None.

V Name : 5pcs 1/4" BSP Male 6mm Barb Hose Brass Adapter Coupler
Web Page : http://www.ebay.com/itm/5pcs-1-4-BSP-Male-6mm-Barb-Hose-Brass-Adapter-Coupler-/270784288206
Quantity : 1 Set
Price per Unit : $3 CAD and $2.60 for mail
Notes :
Requirements and Customisation :

V Name : Black Brushless DC Cooling Blower Fan 2 Wires 5015S 12V 0.06A 50 15mm
Web Page : http://www.ebay.com/itm/311145556384
Quantity : 4
Price per Unit : $1.41
Notes : None.
Requirements and Customisation : None.

DO NOT ORDER OR PURCHASE NOW :

Name : 1/4"PT Male Thread to 6mm Hose Barb Brass Straight Coupling Fitting
Web Page : http://www.amazon.ca/Thread-Brass-Straight-Coupling-Fitting/dp/B00GYSX6G2
Quantity : 2
Price per Unit : $2.96 CAD
Notes : In case of a problem : http://www.aliexpress.com/item/2-Pieces-6mm-Hose-Barb-x-1-4-inch-Male-BSP-Thread-Dia-12-5mm-Elbow/1925170152.html
Requirements and Customisation :

Name : Brass Barb Fitting 1/8 BSP male thread to 1/8" Barb straight
Web Page : http://www.ebay.com.au/itm/Brass-Barb-Fitting-1-8-BSP-male-thread-to-1-8-Barb-straight-/331178748555
Quantity : 2
Price per Unit : $7 AU
Notes :
Requirements and Customisation :

Name : 165mm x 5mm NBR Nitrile Rubber O Ring Seal Washers Black
Web Page : http://www.aliexpress.com/item/165mm-x-5mm-NBR-Nitrile-Rubber-O-Ring-Seal-Washers-Black/933832827.html
Quantity : 1
Price per Unit : 5.59 US
Notes :
Requirements and Customisation :

Name : Free shipping! 115mm x 5mm Black Nitrile Rubber O Ring NBR Seal Washer 10 Pcs
Web Page : http://www.aliexpress.com/item/Free-shipping-115mm-x-5mm-Black-Nitrile-Rubber-O-Ring-NBR-Seal-Washer-10-Pcs/1995974587.html
Quantity : 1 Set
Price per Unit : 8.49 US
Notes :
Requirements and Customisation :

Name : 10 Pcs 110mm x 5mm Black Nitrile Rubber O Ring NBR Seal Gasket
Web Page : http://www.aliexpress.com/item/10-Pcs-110mm-x-5mm-Black-Nitrile-Rubber-O-Ring-NBR-Seal-Gasket/1371713932.html
Quantity : 1 Set
Price per Unit : 8.15 US
Notes :
Requirements and Customisation :

Name : DC 0 15V Analog Volt Voltage Panel Meter Voltmeter Gauge
Web Page : http://www.ebay.ca/itm/DC-0-15V-Analog-Volt-Voltage-Panel-Meter-Voltmeter-Gauge-/320979738654
Quantity : 1
Price per Unit : $5.90 US
Notes : Says 85C1 on the picture on the meter.
Requirements and Customisation : Size : 64mm, 55.5mm, 47mm ( back ).

Name : 1 DC 5A Analog Panel Gauge 85C1 White 0 5A DC
Web Page : http://www.ebay.com/itm/1-DC-5A-Analog-Panel-AMP-Current-Meter-Ammeter-Gauge-85C1-White-0-5A-DC-/120985291050
Quantity : 1
Price per Unit : $4.99 US
Notes :
Requirements and Customisation : Size : 64mm, 56mm, 57mm ( back ).

Name : 1 DC 10V Analog Panel Volt Voltage Meter Voltmeter Gauge 85C1 White 0 10V DC
Web Page : http://www.ebay.com/itm/1-DC-10V-Analog-Panel-Volt-Voltage-Meter-Voltmeter-Gauge-85C1-White-0-10V-DC-/121002503910
Quantity : 1
Price per Unit : $4.99
Notes :
Requirements and Customisation : Size : 64mm, 56mm, 57mm ( back ).

Name : 1 DC 2A Analog Panel AMP Current Meter Ammeter Gauge 85C1 White 0 2A DC
Web Page : http://www.ebay.com/itm/1-DC-2A-Analog-Panel-AMP-Current-Meter-Ammeter-Gauge-85C1-White-0-2A-DC-/110951078957
Quantity : 1
Price per Unit : $4.99US
Notes : None.
Requirements and Customisation : Size : 64mm, 56mm, 57mm ( back ).

Name : 1 / 8 BSPP Nickel Plated Brass Threaded Needle Valve
Web Page : http://www.ebay.com/itm/1-8-BSPP-Nickel-Plated-Brass-Threaded-Needle-Valve-/171238757755
Quantity : 2
Price per Unit : $3.20US
Notes : None.
Requirements and Customisation : None.

Name : 5pcs 1 / 8 BSP Male 6mm Barb Hose Brass Adapter Coupler
Web Page : http://www.aliexpress.com/item/5pcs-1-8-BSP-Male-6mm-Barb-Hose-Brass-Adapter-Coupler/1542817696.html
Quantity : 1 Set
Price per Unit : $3.32 US
Notes : There seem to be more one eight to 6mm rather than one fourth to 6mm.
Requirements and Customisation :

Name : 5pcs 1/4" BSP Male 8mm Barb Hose Brass Adapter Coupler
Web Page : http://www.ebay.com/itm/5pcs-1-4-BSP-Male-8mm-Barb-Hose-Brass-Adapter-Coupler-/270784307899
Quantity : 1 Set
Price per Unit : $3.04 CAD and $2.60 for mail
Notes :
Requirements and Customisation :

Cox International :

All Cox International Prices are in US Dollars without taxes.

V Name : Cox .049 RC Diesel Engine
Web Page : http://coxengines.ca/cox-.049-rc-diesel-engine.html
Quantity : 1
Price per Unit : $59.95
Notes : Must come with Cox standard backplate with independent and fully adjustable analogue mechanical needle valves for air and fuel.
Requirements and Customisation : IMPORTANT : The engine must rotate in the direction in which the air resistance of the propeller TIGHTENS the propeller screw and not the other way around. The best way to check this is : hold the propeller screw with one hand and turn the engine in the direction in which the engine rotates while working after the spring start. In case the propeller screw tightens, this is the correct direction and thread. The same can be seen by energising the starter spring : untighten the propeller screws a few turn and start to energise the spring : in case the propeller screw tightens, this is OK. For a normal thread screw, the engine must turn counter clockwise. Cox International are kindly asked to provide their biggest mixture nipple and crankcase pump hole to reduce the resistance to the crankcase pump of the double stroke engine of the incoming mixture of fuel and air ( or to enlarge the standard hole and or nipple diameter in case unable to provide new and possible ). Cox International are kindly asked to provide their largest hole needle air and fuel valves ( or to enlarge them in case possible ) in order to reduce the resistance to the crankcase pump of the double stroke engine of the incoming mixture of fuel and air.

V Name : Cox .049 Muffler
Web Page : http://coxengines.ca/cox-.049-muffler.html
Quantity : 1
Price per Unit : $9.95
Notes : In case Cox does so, best this muffler be attached to the engine. In case Cox has a muffler cover or an exhaust pipe or a better performance muffler, please, advise. Ensure I get the right muffler for the diesel engine in case of differences.
Requirements and Customisation : Muffler cover or exhaust pipe attachment in case these are available.

V Name : Cox .020 Propeller 3.125 x 2.5 ( 3 blade )
Web Page : http://coxengines.ca/cox-.020-propeller-3.125-x-2.5-3-blade.html
Quantity : 3
Price per Unit : $1.95
Notes : Must be right hand. The best, the propeller hole would match the diameter of the propeller screw of the engine. In case Cox have 5 inch right hand triple propeller, please inform.
Requirements and Customisation : In case Cox can make the hole to match the diameter of the propeller screw of the engine, OK, otherwise, I can do so.

V Name : Cox .049 Propeller Screw Socket Long Stainless Steel ( 2 )
Web Page : http://coxengines.ca/cox-.049-propeller-screw-socket-long-stainless-steel-2.html
Quantity : 1 Set
Price per Unit : $1.95
Notes : The propeller screws must match the engine assembly.
Requirements and Customisation : None.

V Name : Cox 049 Engine Stud ( 3 )
Web Page : http://coxengines.ca/cox-049-engine-stud-3.html
Quantity : 1 Set
Price per Unit : $1.95
Notes : Must match the engine assembly.
Requirements and Customisation : None.

Name : Engine Mounting Screws
Web Page : ?
Quantity : 1 Set
Price per Unit : $1.29 ?
Notes : Are these mounting screws to mount the backplate to the engine or screws to mount the whole engine somewhere. In case these are screws to mount the backplate to the engine, I am not interested for now. Must match the backplate.
Requirements and Customisation : None.

V Name : Cox .049 Piston Reset Tool
Web Page : http://coxengines.ca/cox-.049-piston-reset-tool.html
Quantity : 1
Price per Unit : $12.95
Notes : Must match the engine.
Requirements and Customisation : None.

V Name : CastorLube Castor Oil
Web Page : http://coxengines.ca/castorlube-castor-oil.html
Quantity : 1
Price per Unit : $6.95
Notes : None.
Requirements and Customisation : None.

Name : Cox Diesel Fuel
Web Page : ?
Quantity : 1
Price per Unit : $ ?
Notes : None.
Requirements and Customisation : None.

V Name : Cox .049 Fuel Nipple Extender
Web Page : http://coxengines.ca/cox-.049-fuel-nipple-extender.html
Quantity : 1
Price per Unit : $2.95
Notes : None.
Requirements and Customisation : None.

V Name : 1oz Fuel Tank for Cox Engine, Rectangular
Web Page : http://coxengines.ca/1oz-fuel-tank-for-cox-engine.html
Quantity : 1
Price per Unit : $6.95
Notes : Nipples must match the fuel lines.
Requirements and Customisation : The picture shows the tank disassembled in many pieces. In case Cox does assembly of the tank, this is preferable, otherwise, I will assemble.

V Name : Cox .049 1/2A Diesel Fuel Line ( 3 )
Web Page : http://coxengines.ca/cox-.049-1-2a-diesel-fuel-line-3.html
Quantity : 1
Price per Unit : $4.95
Notes : Fuel lines must match the nipples. Preferable.
Requirements and Customisation : None.

Name : Heat Sink
Web Page : ?
Quantity : 1
Price per Unit : $12.95 ?
Notes : In case Cox has a heat sink for a diesel head, please, inform. In case the heat sink for glow heads fits the diesel heads, please, inform.
Requirements and Customisation : None.

V Name : Cox .049 Needle Valve Extender ( 5 )
Web Page : http://coxengines.ca/cox-.049-needle-valve-extender-10.html
Quantity : 1 Set
Price per Unit : $1.29
Notes : Must match the air and fuel needle valve of the engine.
Requirements and Customisation : None.

DOES COX SELL FUEL?

DOES COX SELL ETHER?

WHERE IS THE BEST PLACE TO GET A LINKAGE?

SHIPPING : IN CASE THERE IS TRACKED SHIPPING TO INSIDE CANADA, THIS MAY BE PREFERABLE. DEPENDS ON THE PRICE.

DO NOT ORDER OR PURCHASE NOW :

Name : Cox .049 Propeller Screw Long ( 4 )
Web Page : http://coxengines.ca/cox-.049-propeller-screw-long-4.html
Price per Unit : $1.95
Notes : The propeller screws must match the engine assembly.
Requirements and Customisation : None.

Name : Cox .049 Propeller Screw Socket Long Black ( 2 )
Web Page : http://coxengines.ca/cox-.049-propeller-screw-socket-long-black-2.html
Price per Unit : $1.49
Notes : The propeller screws must match the engine assembly.
Requirements and Customisation : None.

Name : Diesel Fuel Line for Cox Engine 049 to 051 Yellow
Web Page : http://coxengines.ca/diesel-fuel-line-for-cox-engine-049-051-yellow.html
Quantity : 4
Price per Unit : $1.95
Notes : Fuel lines must match the nipples.
Requirements and Customisation : None.

In case of a lack of linkage, use a guitar string ( sized appropriately ) and a guitar machine gear.

StevenStanleyBayes wrote:

robot797 wrote:Sorry my mobile did something weird
20% hpi fuel
With added oil

What is hpi?

I have just posted the bill of materials of most but not all of the components I have purchased. Some recent purchases, such as the 8cm O ring belts have not been included.

The post, however, gives you links in case you would like to purchase some of these or similar parts.

The post is divided into two major points : Non Cox parts and Cox parts. In case I refer to the propeller as 3.5 inch, this is a mistake. The correct one is 3.125 inch.

As discussed, I would like to strongly encourage you to get an external needle valve and barb hose connectors. You will not need to rely on the engine Fuel Needle Valve to shut down the gas supply. Also, you can regulate the pressure which the tank puts.

In case you have an external tank which is directly connected to the engine, although there are other dependencies such as how you take the fuel, from the top or from the bottom, the recommended by Cox rule of thumb is to position the fuel nipple at the level of the middle of the crankcase. Again, this is only for Cox tanks where the fuel is taken from the bottom but through the top. Should be OK with tanks with a nipple at the bottom.

Also, the fuel line must be shorter than or equal to 10cm and must be the Cox fuel line. In case you are unable to fit the ox fuel line to the tank, use the Cox fuel line ( < = 10cm ) and a brass or copper pipe connector ( I cut from Cox tank brass pipes ) and a hose which fits the tank. Put the connector between the Cox fuel line and the hose and tighten the hose at the connector. This way, the only place you can get a fuel leak is the connector. I used heat shrinks to make the hose part of the brass pipe thicker and then I tightened the hose with a copper wire.

Be advised, some people say, only the special neoprene Cox fuel line must touch the fuel. However, the silicon hose I use is automotive industry certified for all kind of car fuels. I figured Ether and Kerosene are not so different. The same applies for the material of the tank. Some people say the RC diesel fuel may dissolve silicon and some plastics which gasoline and diesel do not. Keep into account.

I am not sure but I think I have seen on your videos a clear hose going into your engine. I am not sure how you have managed to fit this when the engine fuel intake pipe is 2mm and there is no room around.

You have complained from a leaky fuel line on your video and I have now realised this may be because of the thicker and wider diameter hose you have put on the engine intake pipe. The brass pipe connecting I have explained will definitely solve your problem.

Someone has also expressed worries of the longer than necessary fuel line I use between the tank and the engine. Although this has been also made longer before I positioned the tank, the main reason for not cutting the liner more is because I want to avoid sharp turns around the nipples and everywhere else.

Hope I can help.

Some of the features, such as remote start, apply to Cox whoever wants to explore them. I, personally, have not been able to start the engine with a 2500 RPM electric drill. Probably, higher RPM are necessary. I have also not been able to start the engine with manual rotation of the propeller. I have also seen but not found any crank or pull up starter for the engine.

https://www.youtube.com/watch?v=tVa4BMPhJPQ

https://www.youtube.com/watch?v=zkMKdSwZj1A

https://www.youtube.com/watch?v=MdYFEJxFfkY

https://www.youtube.com/watch?v=_SO7PCnVCv0

https://www.youtube.com/watch?v=zXCGyItsgQs

https://www.youtube.com/watch?v=Ck4nID61rso

i have been able to start the engine electric from 500 to 5000 rpm
there are also a lot cox car engines that camne with a recoil starter
(i have 4 of those)

[quote="StevenStanleyBayes"]

StevenStanleyBayes wrote:
As discussed, I would like to strongly encourage you to get an external needle valve and barb hose connectors. You will not need to rely on the engine Fuel Needle Valve to shut down the gas supply. Also, you can regulate the pressure which the tank puts.

In case you have an external tank which is directly connected to the engine, although there are other dependencies such as how you take the fuel, from the top or from the bottom, the recommended by Cox rule of thumb is to position the fuel nipple at the level of the middle of the crankcase. Again, this is only for Cox tanks where the fuel is taken from the bottom but through the top. Should be OK with tanks with a nipple at the bottom.

Also, the fuel line must be shorter than or equal to 10cm and must be the Cox fuel line. In case you are unable to fit the ox fuel line to the tank, use the Cox fuel line ( < = 10cm ) and a brass or copper pipe connector ( I cut from Cox tank brass pipes ) and a hose which fits the tank. Put the connector between the Cox fuel line and the hose and tighten the hose at the connector. This way, the only place you can get a fuel leak is the connector. I used heat shrinks to make the hose part of the brass pipe thicker and then I tightened the hose with a copper wire.

Be advised, some people say, only the special neoprene Cox fuel line must touch the fuel. However, the silicon hose I use is automotive industry certified for all kind of car fuels. I figured Ether and Kerosene are not so different. The same applies for the material of the tank. Some people say the RC diesel fuel may dissolve silicon and some plastics which gasoline and diesel do not. Keep into account.

I am not sure but I think I have seen on your videos a clear hose going into your engine. I am not sure how you have managed to fit this when the engine fuel intake pipe is 2mm and there is no room around.

You have complained from a leaky fuel line on your video and I have now realised this may be because of the thicker and wider diameter hose you have put on the engine intake pipe. The brass pipe connecting I have explained will definitely solve your problem.

Someone has also expressed worries of the longer than necessary fuel line I use between the tank and the engine. Although this has been also made longer before I positioned the tank, the main reason for not cutting the liner more is because I want to avoid sharp turns around the nipples and everywhere else.

Hope I can help.

hpi is a rc car maker
and they have there own fuel
http://www.hpiracing.com/en/part/101904

i used an external tank when testing
it was level with the engine so i did not need extra needles or regulators

my new tank is a onboard tank
it has a 1.5cm fuel line that comes from under the engine
the fuel line is not vissable becaus it runs troiugh the backplate and chassis of the generator
a pain to put togetter but awsome when it fits

i have run a cox engine with a fuel line of 20cm but everything was level

and for silicon fuel lines
NEVER use it
it swells and gets lose
neopreme is the only thing to use on all other fuels then nitro

the clear hose in the video was an exhaust expell hose
(pressed on the exhaust to redirect the dripping oil)

and for the leaky fuel line
it later became clear that it was a clog in my needle assembely
some old castor gunk from my fueltank plugged my needle valve

and for the brass pipe i dont have room to put that in

my fuel line btw is some weird old line that is part silicone and part neopreme
it gets a little lose when it touches diesel for 2 a 5 hours
but that is so little that it can be forgotten

to be honnes i even like the effect
soak the line in diesel assemble the engine and then wait and the hose tightens itself around the coupelings
and after that it never touches diesel on those places and it stays put

robot797 wrote:i have been able to start the engine electric from 500 to 5000 rpm
there are also a lot cox car engines that camne with a recoil starter
(i have 4 of those)

May I ask you to start the engine manually by rotating the flywheel?

i tried but i cant for now
my flywheen does not have the grip pattern round the side like a dummas flywheel has

i start my cox boat by flicking the flywheel (putting my tumb on it and pull it down or up depen ds how i feel)

it i were to have a custom flywheel i would add the gripp edge then i could start it by hand

robot797 wrote:

StevenStanleyBayes wrote:

StevenStanleyBayes wrote:
As discussed, I would like to strongly encourage you to get an external needle valve and barb hose connectors. You will not need to rely on the engine Fuel Needle Valve to shut down th6e gas supply. Also, you can regulate the pressure which the tank puts.

In case you have an external tank which is directly connected to the engine, although there are other dependencies such as how you take the fuel, from the top or from the bottom, the recommended by Cox rule of thumb is to position the fuel nipple at the level of the middle of the crankcase. Again, this is only for Cox tanks where the fuel is taken from the bottom but through the top. Should be OK with tanks with a nipple at the bottom.

Also, the fuel line must be shorter than or equal to 10cm and must be the Cox fuel line. In case you are unable to fit the ox fuel line to the tank, use the Cox fuel line ( < = 10cm ) and a brass or copper pipe connector ( I cut from Cox tank brass pipes ) and a hose which fits the tank. Put the connector between the Cox fuel line and the hose and tighten the hose at the connector. This way, the only place you can get a fuel leak is the connector. I used heat shrinks to make the hose part of the brass pipe thicker and then I tightened the hose with a copper wire.

Be advised, some people say, only the special neoprene Cox fuel line must touch the fuel. However, the silicon hose I use is automotive industry certified for all kind of car fuels. I figured Ether and Kerosene are not so different. The same applies for the material of the tank. Some people say the RC diesel fuel may dissolve silicon and some plastics which gasoline and diesel do not. Keep into account.

I am not sure but I think I have seen on your videos a clear hose going into your engine. I am not sure how you have managed to fit this when the engine fuel intake pipe is 2mm and there is no room around.

You have complained from a leaky fuel line on your video and I have now realised this may be because of the thicker and wider diameter hose you have put on the engine intake pipe. The brass pipe connecting I have explained will definitely solve your problem.

Someone has also expressed worries of the longer than necessary fuel line I use between the tank and the engine. Although this has been also made longer before I positioned the tank, the main reason for not cutting the liner more is because I want to avoid sharp turns around the nipples and everywhere else.

Hope I can help.

hpi is a rc car maker
and they have there own fuel
http://www.hpiracing.com/en/part/101904

i used an external tank when testing
it was level with the engine so i did not need extra needles or regulators

my new tank is a onboard tank
it has a 1.5cm fuel line that comes from under the engine
the fuel line is not vissable becaus it runs troiugh the backplate and chassis of the generator
a pain to put togetter but awsome when it fits

i have run a cox engine with a fuel line of 20cm but everything was level

and for silicon fuel lines
NEVER use it
it swells and gets lose
neopreme is the only thing to use on all other fuels then nitro

the clear hose in the video was an exhaust expell hose
(pressed on the exhaust to redirect the dripping oil)

and for the leaky fuel line
it later became clear that it was a clog in my needle assembely
some old castor gunk from my fueltank plugged my needle valve

and for the brass pipe i dont have room to put that in

my fuel line btw is some weird old line that is part silicone and part neopreme
it gets a little lose when it touches diesel for 2 a 5 hours
but that is so little that it can be forgotten

to be honnes i even like the effect
soak the line in diesel assemble the engine and then wait and the hose tightens itself around the coupelings
and after that it never touches diesel on those places and it stays put

I do not understand what you mean by 1.5cm fuel line. The diameter of yout fuel line must be lower than 2mm to fit over the intake pipe. Probably you mean 1.5cm length.

AUTOMOTIVE Silicin Lines are OK as long as they do not get disolved by Ether and Kerosene. To connect them to Cox fuel line, use brass pipe connectors from Cox, 2mm.

You DO need an external needle valve to shut down the fuel supply. The engine fuel needle valve is not sufficient.

robot797 wrote:i tried but i cant for now
my flywheen does not have the grip pattern round the side like a dummas flywheel has

i start my cox boat by flicking the flywheel (putting my tumb on it and pull it down or up depen ds how i feel)

it i were to have a custom flywheel i would add the gripp edge then i could start it by hand7

ALL YOU NEED IS A GLOVE. PLEASE, TRY. THIS IS IMPORTANT.

naa i never use a glove
burns and cuts prove that i am a man!

i cant find the fuel line i use but it looks like this (green)

http://www.ebay.com/itm/AEROTREND-GASOLINE-DIESEL-FUEL-TUBING-3-FEET-3-16-OD-3-32-ID-FOR-RC-AIRPLANE-/221653613001?pt=LH_DefaultDomain_0&hash=item339b95b9c9

and it is 1.5cm in length

and i never close my fuel line
i just reduce compression untill it shuts off and then i turn it upside down and drain the tank

keeps the fuel line clean and the tank clean

robot797 wrote:naa i never use a glove
burns and cuts prove that i am a man!

i cant find the fuel line i use but it looks like this (green)

http://www.ebay.com/itm/AEROTREND-GASOLINE-DIESEL-FUEL-TUBING-3-FEET-3-16-OD-3-32-ID-FOR-RC-AIRPLANE-/221653613001?pt=LH_DefaultDomain_0&hash=item339b95b9c9

and it is 1.5cm in length

and i never close my fuel line
i just reduce compression untill it shuts off and then i turn it upside down and drain the tank

keeps the fuel line clean and the tank clean

Then you will benefit from a valve :You just shut the valve off and may or may not open another air valve to allow air in the line. The fuel will burn, the engine will shut down and you will have a clean dry fuel line with a reliably blocked tank.

Please, for your own good, try to start the engine by hand with a glove. This is to be a very important advantage for your design.

Why gloves ?

And I don't have room for a valve