How to find drive washer / taper cone drive washers?

[tudordewolf]

Any help / direction for the search is very appreciated.

I'm trying to put together some engine swaps and I'm having a hard time finding a particular part - I need a drive washer for .12-.18 engines that engages a tapered cone and has the flywheel pressed up against it. Most engines that need one include it, but I can't find a single one sold separately. I need one that's just tapered, no notches or flats.

I understand some marine engines may have a similar arrangement.

Maybe my problem is that I don't know the correct term to search for.

I need just one extra, but is I'll always be one short if I have to "borrow" it from another engine.

Engines that do use (and include) one: Evo-12P, SH-.18
Engines that need them: Multi-shaft version Traxxas engines going into the HSP platform

Worse, it's not even listed as a "part" on the engines which _do_ use it.

I've purchased an enya .09 drive washer which is too small, and a "DHK H119" .21 drive washer which was too big. I need one that's 5mm thick, front to back.

This is the one from an sh.18:

 

[Chubaka]

See if you have one that fits, then list what engine and I can try to locate. I found the split cone washer from traxxas. Part tra3281.

https://www.google.com/search?ie=UT...-att-us&source=android-browser&q=traxxas+3281

 

[alfredwong2003]

You can also search for "engine cone collet".

 

[tntpoof]

track down a online manual for part number that might help

 

[tudordewolf]

Appreciate the help, I should clarify - I don't need the split cones, I need the washer that goes over them. It's a slightly unusual arrangement where instead of the flywheel engaging the collet, the washer does, and then the flywheel, which only has a 5mm bore, is pressed against the washer by the pilot shaft, almost as if it were a propeller.

The washers from an Sh.18 engine or Thunder Tiger Evo-12(P) are perfect, but not listed on their respective manuals as "parts" of the engine.

 

[alfredwong2003]

Try looking at the last picture https://www.amazon.ca/Engine-2-74CC-Starter-Recoil-Truggy/dp/B07FKFT1WX#immersive-view_1656909118081,
You can always add another cone to simulate it.

 

[alfredwong2003]

Not sure if that one will work, as it looks more oval than round https://www.ebay.ca/itm/22494516588...ar=523819006781&widget_ver=artemis&media=COPY.

 

[tudordewolf]

That first one is the part I need, but as you can see there, it's only being sold together with an engine. The second one isn't tapered, it's got two flats. I appreciate your looking. I may just get one with the engine and keep the engine for parts or even part it out.

 

[Chubaka]

Exploded view on sh engines. They have a .16, then its goes over .18 to the .20 side.

https://www.mikegoesflying.com/engine-exploded-parts/

 

[WVNed]

The piece you are talking about is usually removed and replaced by the flywheel of the clutch that fits over the tapered cone in a car.
In this pic part 86021 is fitted over a tapered cone and tightens against the flat front of the engine.

 

[tudordewolf]

Exploded view on sh engines. They have a .16, then its goes over .18 to the .20 side.

https://www.mikegoesflying.com/engine-exploded-parts/

Amazing, and they have the part in stock. Thank you!

A "thrustplate", I never would've guessed that name.

 

[olds97_lss]

https://www.redcatracing.com/products/te15-19?variant=30993332142170

That piece?

 

[tudordewolf]

https://www.redcatracing.com/products/te15-19?variant=30993332142170

That piece?

Yes!

Even better, since the ones from mikegoesflying weren't a perfect fit.

Thank you!

 

[olds97_lss]

Yes!

Even better, since the ones from mikegoesflying weren't a perfect fit.

Thank you!

Cool. I wasn't sure. I have 3 or 4 of those laying around from my old nitro OS engines. However, theirs were keyed to notches on the shaft and didn't use the collet. You would remove that and put a collet on to use a normal car flywheel.

The old OS 15 CV-r(X) came with a crank like that with those things, I probably still have them somewhere... lol!

You can see the flat spots on the crank here:

 

[tudordewolf]

Here's the product of my efforts, an Evo-12P wearing HSP hardware. I also had to drill out the flywheel from 5mm to 1/4" (6.35mm), and use a shoulder bolt to extend the pilot shaft, which I'm quite proud of figuring out - shown partially screwed in, it installs flush and the diameter is perfect.