Log in
Search
Latest topics
» Purchased the last of any bult engines from Ken Enyaby getback Today at 7:24 am
» My N-1R build log
by rsv1cox Today at 7:05 am
» Funny what you find when you go looking
by rsv1cox Yesterday at 3:21 pm
» Landing-gear tips
by 1975 control line guy Yesterday at 8:17 am
» Cox NaBOO - Just in time for Halloween
by rsv1cox Tue Nov 19, 2024 6:35 pm
» Canada Post strike - We are still shipping :)
by Cox International Tue Nov 19, 2024 12:01 pm
» Duende V model from RC Model magazine 1983.
by getback Tue Nov 19, 2024 6:08 am
» My current avatar photo
by roddie Mon Nov 18, 2024 9:05 pm
» My latest doodle...
by TD ABUSER Mon Nov 18, 2024 11:30 am
» Brushless motors?
by rsv1cox Sun Nov 17, 2024 6:40 pm
» Free Flight Radio Assist
by rdw777 Sun Nov 17, 2024 6:03 pm
» Tribute Shoestring build
by amurphy6812 Sun Nov 17, 2024 5:43 pm
Cox Engine of The Month
My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Page 1 of 1
My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
This is my new free flight airplane. It's a delta wing made from a drawing found on Outerzone:
https://outerzone.co.uk/plan_details.asp?ID=10791
The plane is mainly build with Coroplast sheet apart from the wooden bulkheads and wing stiffeners.
The plane is powered by a Pee Wee mounted at the back and a 3 blade 3.125x2.5 prop. The knob of the needle valve is just at the same level of the wing. in order to turn the needle easisly, I attached a piece of music wire with a blob of époxy.
Hey René, this is the trade engine you sent me !!
I started the build with the fuselage. The bottom and sides were cut in 1 piece out of a sign board and then folded and glued with 2 balsa bulkheads + one in the nose and the motor mount. The nose was left long enough to be cut to size after glueing.
The wing and tail fin were cut out of a thinner blue sheet I found at our local DIY for 1 EUR.
The wing panel is kept straight by some sort of wooden stiffeners that also provide stability I think. After cutting and 3 coats of dope, they were painted in red PU paint. The elevons are kept in place by 2 retainers glued on the tips. The elevon angle given on the plan is exact the one that is needed.
The canopy was cut out of a hand soap bottle and glued on. The area covered by the canopy was first coloured black with a pen.
The nose cone is a piece of leading edge, doped and painted black. This picture was taken after glide testing.
And the plane does fly!!
https://outerzone.co.uk/plan_details.asp?ID=10791
The plane is mainly build with Coroplast sheet apart from the wooden bulkheads and wing stiffeners.
The plane is powered by a Pee Wee mounted at the back and a 3 blade 3.125x2.5 prop. The knob of the needle valve is just at the same level of the wing. in order to turn the needle easisly, I attached a piece of music wire with a blob of époxy.
Hey René, this is the trade engine you sent me !!
I started the build with the fuselage. The bottom and sides were cut in 1 piece out of a sign board and then folded and glued with 2 balsa bulkheads + one in the nose and the motor mount. The nose was left long enough to be cut to size after glueing.
The wing and tail fin were cut out of a thinner blue sheet I found at our local DIY for 1 EUR.
The wing panel is kept straight by some sort of wooden stiffeners that also provide stability I think. After cutting and 3 coats of dope, they were painted in red PU paint. The elevons are kept in place by 2 retainers glued on the tips. The elevon angle given on the plan is exact the one that is needed.
The canopy was cut out of a hand soap bottle and glued on. The area covered by the canopy was first coloured black with a pen.
The nose cone is a piece of leading edge, doped and painted black. This picture was taken after glide testing.
And the plane does fly!!
OVERLORD- Diamond Member
- Posts : 1807
Join date : 2013-03-19
Age : 58
Location : Normandy, France
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Greetings! Yes, that little PeeWee does look good on your plane. Glad to see you get her up in the air! Very nice build using coroplast.
Marleysky- Top Poster
-
Posts : 3618
Join date : 2014-09-28
Age : 72
Location : Grand Rapids, MI
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Another good one Lieven.
Enjoyed the re-purposed Palmolive container.
Enjoyed the re-purposed Palmolive container.
rsv1cox- Top Poster
-
Posts : 11245
Join date : 2014-08-18
Location : West Virginia
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Would there be any weight savings using Dollartree foam board instead of coroplast?
ticomareado- Account Under Review
- Posts : 1089
Join date : 2013-10-03
Location : NC
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Thanks for your comments. I don't know Dollartree foam board Foam board might be lighter but know that weight is not an issue. This plane weights complete 170g. A Pee Wee can pull up more airplane weight than that.
The video I recorded yesterday;
https://www.youtube.com/watch?v=TeG-ZJmXCAU
The video I recorded yesterday;
https://www.youtube.com/watch?v=TeG-ZJmXCAU
OVERLORD- Diamond Member
- Posts : 1807
Join date : 2013-03-19
Age : 58
Location : Normandy, France
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Looks like it would make a nice model for single channel or multi RC, too. Perhaps then lighter weight foamboard might have an advantage to offset the weight of the radio equipment?
GallopingGhostler- Top Poster
-
Posts : 5721
Join date : 2013-07-13
Age : 70
Location : Clovis NM or NFL KC Chiefs
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Great little plane and flys well ! I see after the power cut it took to straight flight why is that ?
getback- Top Poster
-
Posts : 10437
Join date : 2013-01-18
Age : 67
Location : julian , NC
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
The model was designed for single channel RC with a rubber band escapement.
Eric, the plane glides back to earth in a straight line because there isn't anything to create a right hand turn. I've read that by altering the position of an elevon, a right hand turn can be created but I don't know which elevon to alter and to give more or less lift. During glide testing, I increased the angle of 1 elevon to see what that did but the model kept on gliding straight. I also added a weight to the right wing but that didn't make any difference either.
I now only rely on a fast descend to prevent the plane from flying too far away.
Eric, the plane glides back to earth in a straight line because there isn't anything to create a right hand turn. I've read that by altering the position of an elevon, a right hand turn can be created but I don't know which elevon to alter and to give more or less lift. During glide testing, I increased the angle of 1 elevon to see what that did but the model kept on gliding straight. I also added a weight to the right wing but that didn't make any difference either.
I now only rely on a fast descend to prevent the plane from flying too far away.
OVERLORD- Diamond Member
- Posts : 1807
Join date : 2013-03-19
Age : 58
Location : Normandy, France
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Thanks OVERLORD for the explanation, I should have read more closely the Outerzone description. Since it is rudder only, to make it turn as a free flight would be rudder offset during glide and engine side (offset) thrust to moderate turn under power. (May be more sensitive rudder one way than the other due to engine torque.)
Following is a translation of the German text in the plan:
I think that one could even power it with a Wen Mac Mark II engine (the one with glow plug head and no spring starter assembly, weight 1.1 oz.)
Interestingly, the plan only shows the elevon construction on one side. It would make sense on both sides. Perhaps it was intended to be on only one side depended on to counteract engine torque for straight flight with a gentle climb, then compensate with rudder during glide? Without the engine article, comment next to the engine leaves one clueless.
Following is a translation of the German text in the plan:
Das Wochenend-Modell - einfach zu bauen und leicht zu fliegen
The Weekend Model - easy to build and easy to fly
Modellentwurf: Hartwig Eßl, Spannweite 498 mm, Rumpflänge 580 mm
Model design: Hartwig Essl, wingspan 498 mm, hull length 580 mm
Fernsteuerung: 1-2-Kanal-Kleinstempfänger
Remote control: 1-2-channel micro receiver
Motor: 0,33 ccm (COX PEE WEE Oder COX TEE DEE 020)
Engine: 0.33 cc (COX PEE WEE OR COX TEE DEE 020)
MT-Bauplan-Nr.569 - Maßstab 1:1
MT-Plan No. 569 - scale 1:1
Verlag für Technik und Handwerk, Baden-Baden
Publishing house for technology and crafts, Baden-Baden
(Text by the engine)
Richtung der motorachse geht aus dem text hervor
Direction of the motor axis is apparent from the text
I think that one could even power it with a Wen Mac Mark II engine (the one with glow plug head and no spring starter assembly, weight 1.1 oz.)
Interestingly, the plan only shows the elevon construction on one side. It would make sense on both sides. Perhaps it was intended to be on only one side depended on to counteract engine torque for straight flight with a gentle climb, then compensate with rudder during glide? Without the engine article, comment next to the engine leaves one clueless.
GallopingGhostler- Top Poster
-
Posts : 5721
Join date : 2013-07-13
Age : 70
Location : Clovis NM or NFL KC Chiefs
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Yes George, it's too bad that the article that appeared in the magazine is not available. Détails about engine running direction and maybe other things good to know are explained. It caught my eye as well that the elevon is drawn only on 1 side. But I think you need them on both sides. There is no photo of the plane except this one:
It can be found on an eBay page of a chap who sells the plan.
https://www.ebay.fr/itm/Bauplan-X-12-Modellbauplan-Kleines-Delta-Modell-Modellbau/170986554137?hash=item27cf97c319:g:NKQAAOSwSdZWctwV
The picture is not very clear but there are definitely 2 longitudinal stiffeners in the wing, so I suppose there are 2 elevons as well.
Maybe the easiest thing to do is to fix a tiny trim tab on the rudder for right turn during gliding.
VTH still exists. I ordered a Graupner boat plan from them a few years ago.
https://www.vth.de/
It can be found on an eBay page of a chap who sells the plan.
https://www.ebay.fr/itm/Bauplan-X-12-Modellbauplan-Kleines-Delta-Modell-Modellbau/170986554137?hash=item27cf97c319:g:NKQAAOSwSdZWctwV
The picture is not very clear but there are definitely 2 longitudinal stiffeners in the wing, so I suppose there are 2 elevons as well.
Maybe the easiest thing to do is to fix a tiny trim tab on the rudder for right turn during gliding.
VTH still exists. I ordered a Graupner boat plan from them a few years ago.
https://www.vth.de/
OVERLORD- Diamond Member
- Posts : 1807
Join date : 2013-03-19
Age : 58
Location : Normandy, France
OVERLORD- Diamond Member
- Posts : 1807
Join date : 2013-03-19
Age : 58
Location : Normandy, France
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Because a plane always looks nicer with wheels when not flying, I made a dummy landing gear for the X-12. It was made from 10mm wide aluminium and clamps onto the fuselage. The wheels are the ones Bernie sells per 10 pcs. The axle is just a bicycle spoke that fits the wheel holes well. The wheel retainers are cut off insulation bits from an electrical cable.
OVERLORD- Diamond Member
- Posts : 1807
Join date : 2013-03-19
Age : 58
Location : Normandy, France
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Looks good Lieven, nice flight too. Pee Wee could use a little tuning for a better run however, it was perfect for where you were.
I like the free flights!
I like the free flights!
Cribbs74- Moderator
-
Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: My latest free flight plane: a PeeWee powered jet fighter (don't miss the vid)
Cribbs74 wrote:Looks good Lieven, nice flight too. Pee Wee could use a little tuning for a better run however, it was perfect for where you were.
I like the free flights!
Thanks. The flight in the video was the first and only descent flight of the plane with the 3 blade 3.125 prop. I've tried that prop several times now and I find that this prop doesn't match the PeeWee. The RPM is not constant, erratic and there is no power. They're a waste of money. The Thimble Drome 4.5 props work very well. After many trials and craches, I changed the 3 blade for a 4.75 Super prop and all rpm problems were gone instantly. Luckily, the plane is very sturdy and can absorb some abuse. I'd like to build a scale model from scratch but the initial tests with a new built plane frighten me a lot. I recorded vids where the plane goes up and straight down again with running engine or where it circles at 1m above the ground before crashing.
OVERLORD- Diamond Member
- Posts : 1807
Join date : 2013-03-19
Age : 58
Location : Normandy, France
Similar topics
» “Aero Car” 3d printed, peewee powered plane build
» My Latest Scratch build Cox powered car
» Cardboard inserts+Instruction sheets
» cox Naboo fighter plane
» Purple Plane Factory's Latest Completion...S-6!
» My Latest Scratch build Cox powered car
» Cardboard inserts+Instruction sheets
» cox Naboo fighter plane
» Purple Plane Factory's Latest Completion...S-6!
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum