some thoughts for bernie

In some cases hoard them.......

Probably be north of $200/ea if produced new today with the precision involved and NRE tooling costs for the plastic molds. The ROI would be decades long. Just not feasible.

Jason_WI wrote:In some cases hoard them.......

Probably be north of $200/ea if produced new today with the precision involved and NRE tooling costs for the plastic molds. The ROI would be decades long.  Just not feasible.

yeah that too...

Suppose that came off a little snarky, All I mean't is that more people collect than use.

Cribbs74 wrote:

Jason_WI wrote:In some cases hoard them.......

Probably be north of $200/ea if produced new today with the precision involved and NRE tooling costs for the plastic molds. The ROI would be decades long.  Just not feasible.

 yeah that too...

Suppose that came off a little snarky, All I mean't is that more people collect than use.

Not snarky at all. I bet less than 100 TD .010 engines are in regular use today. Probably more TD .020 engines used with the FF guys than the .010 engines.

but i would use one !

Greg,

I think you will find that the .049 is more versitile and more practical for day to day use. However, if you are patient and hang around in the hobby for a long time you will eventually own one.

Assuming Jason doesn't buy all of them...

Cribbs74 wrote:

Assuming Jason doesn't buy all of them...

I think they multiply in my mailbox. Every once and a while one or two appear.

These days we have CNC machines sure they wont churn out products super fast but once the
software is set up you can just feed them metal and let the tech do the work. Man power would
be reduced to a handful of folks. The smaller the engine the faster the cutting is completed.

Imagine a micro Cox .0049 RC (simple throttle sleeve) and CL versions. With today's 1.5g servos one could
fly a nice 3ch plane right in the back yard with minimum noise. Round the pole 2ch or CL with 12ft lines.
RC airboats in the pool

Simple TD engine design with remote fuel tank to reduce production cost. Simple bladder tank out of
surgical tubing. No micro size reeds or associated machining. An engine that size wont require much beef
to stay together and crashes will be hard to break anything at all.  

- all aluminum case integrated carb.
- bronze sleeve for the crank
- no plastic carb body no integrated assemblies needed up front.

Micro Parts:
Sleeved Case / Carb  - $18
Back plate $4
NV assembly - $7
Crank with threads up front - $11
Prop plate could be a simple washer with a spinner nut. $4
Piston / Rod - $14
Cylinder - $9
2 fin glow plug $9 / no gasket needed
Throttle sleeve $5
Wrench for: glow plug, back plate and prop nut $4
$85.00  RC / $80.00 CL / FF

If 2000 units sold $170k if all RC
If Vendor Cost $95k / Revenue $75k

Props 3 for $10
2Dx1P  RC / CL
2.5x.75 FF / CL / RC
3x.5 FF

Imagine how long a Quart of 25% nitro will last.


1 screw per each beam to mount the engine.

then how come they were made so cheap in the 90'S?

cox24711 wrote:then how come they were made so cheap in the 90'S?

Because they had the molds and tools, which are now worn out, or have been either discarded or destroyed.

Muwahahaha backatcha!
https://youtu.be/wXL2t4eKn-I


HOLY CRAP, 2,299 views

https://youtu.be/PUZz-uQNZN4


Hard to believe that plane is still one of my frequent fliers. My RR1 doesn't have the cool ribbed crankcase, but it's still an RR1, a badass little runner! Mudhen gave me that engine on my birthday just because he thought I'd have fun with it... He was right.
Rusty

Nice flyin Rusty. that looked like a blast

akjgardner wrote:Nice flyin Rusty. that looked like a blast

Hi Gardner, yeah I've gotten a lot of fun out of that Satan. The addition of a Tee Dee .049 on pressure really lit it up. Whenever I want to fly 1/2A, it comes along. Right now the clevis is broken off the control rod, so I need to do a little fixing. That linkage takes a lick every time it lands.
Rusty

RknRusty wrote:

akjgardner wrote:Nice flyin Rusty. that looked like a blast

Hi Gardner, yeah I've gotten a lot of fun out of that Satan. The addition of a Tee Dee .049 on pressure really lit it up. Whenever I want to fly 1/2A, it comes along. Right now the clevis is broken off the control rod, so I need to do a little fixing. That linkage takes a lick every time it lands.
Rusty

As you fix it put a chunk of silicone fuel line on to soften the blow to the clevis... but I might be misunderstanding the problem.

Phil

pkrankow wrote:As you fix it put a chunk of silicone fuel line on to soften the blow to the clevis...  but I might be misunderstanding the problem.

Phil

That's probably a good idea. It broke off right behind the clevis.
The biggest thing is, last time I landed, for some reason it was being impossible to control, and I came in on final at 90 mph.

I thought maybe the lines were sticking together. It had happened once before in the rain and I blamed wet lines. That time, it suddenly started flying fine after the first minute. But when it did it again, this was a dry day. Old dirty spiderwire seemed like a good explanation. Maybe something else was wrong, like maybe the clevis was breaking during flight. Both times, the loops were unusually large too. In any case, I will throw those 45' lines away and start fresh. Sounds too long for a Satan, but this one really hauls ass with the TD.

Have we hijacked the thread yet? I think it's a dead thread anyway.
Rusty

RknRusty wrote:

cox24711 wrote:then how come they were made so cheap in the 90'S?

Because they had the molds and tools, which are now worn out, or have been either discarded or destroyed.

then why don't they make them with separate fuel tanks and metal carburettor body's ?if it is just the plastic that they cannot produce then don't use plastic

The machinery is more than likely long gone and the cost to reproduce it would not offset the return. Smaller engines are generally more money than larger engines. The tolerances have to be better and truthfully there just isn't a market for it. The return would require thousands just to capitalize on the initial investment. Ken

3D Printing technology is to the point to where you could probably print you one. Don't know how the metallurgy would be on it. Im sure it would have to be heat treated, Just thinking out loud

You could try the idea on kickstarter and see how the public likes it it could be a hit!

Ken Cook wrote:             The machinery is more than likely long gone and the cost to reproduce it would not offset the return. Smaller engines are generally more money than larger engines. The tolerances have to be better and truthfully there just isn't a market for it. The return would require thousands just to capitalize on the initial investment. Ken

Right, Greg, that's what I meant in my answer, I was talking about the metal parts as well. Maybe when Starfleet allows public access to replicators, we can make all we want. Not holding my breath though Lol.
Rusty

Modern micro engine CNC tolerance solved.
Small engine means less metal and faster CNC completion.

Aluminum:
- Case with integrated venturi and bronze sleeve
- Threaded Back plate
- Simple prop plate
- 2 fin glow plug

Steel:
Crank with front induction
Cylinder
Ball socket piston / rod
Throttle sleeve
NV with brass housing

These engines can be made with a profit easy as
we are all conditioned to pay higher prices these days.

RknRusty wrote:

Ken Cook wrote:             The machinery is more than likely long gone and the cost to reproduce it would not offset the return. Smaller engines are generally more money than larger engines. The tolerances have to be better and truthfully there just isn't a market for it. The return would require thousands just to capitalize on the initial investment. Ken

Right, Greg, that's what I meant in my answer, I was talking about the metal parts as well. Maybe when Starfleet allows public access to replicators, we can make all we want. Not holding my breath though Lol.
Rusty

Dang it. Now you know how I got all my engines.