How To Mount The RS EHO 33CC Engine On A Flat Surface?

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I'm am going to try a rack mount of a Robin Subaru EHO 35 engine and would like to know if there are any bolt holes on the bottom of the engine that can be used to mount the engine to a flat plate. This is very difficult information to get, no pics on the net. Can anyone who owns one of these engines tell me? MIke
 
Take flat piece of metal (steel?) and bend the left & right sides up so that you can use the 2 engine bolt holes and 2 gearbox bolt holes....

Then you'll have a flat plate underneath the engine/gearbox!

:unsure:
 
Where are these two bolt holes on the engine? Are they under the engine? I thought there were three bolt holes under the engine. PLease explain. Thanks. MIke
 
Here is a photo of the bottom of the EOH35 compliments of Staton Inc. I believe that the only mounting points on the bottom are the two threaded holes on the far left in the photo. I've seen the motor mounted using a large L-Bracket before. (see bracket in second Photo)

ocscully
 

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Where are these two bolt holes on the engine? Are they under the engine? I thought there were three bolt holes under the engine. PLease explain. Thanks. MIke
Here's some pics of my bike. Didn't design it, but it's a sweet design alright. It was actually intended for a Chinese 33cc scooter engine, but a little bird told me that the Subaru would "bolt right up". That's not entirely true, however!! The gearbox bolts right up, because it's the same one that came with the bike.... the engine has nothing supporting it, reall. The engine rests just right on the vertical part of the plate, so I just wedged part of an old belt (fake leather, at that) in between the mount plate and the clutch housing.

Anyway, here's the pics. Hopefully you can see the two separate vertical plates on the gearbox side. That's all I'm using right now. I should drill some holes that line up with the engine bolt holes... and get a half-inch long spacer... but I don't think that's absolutely necessary with the belt wedge mount. Lucked out there.

Oh yea... the pics...

CIMG0012-00.jpgCIMG0014-00.jpgCIMG0015-00.jpgCIMG0016-00.jpgCIMG0017-00.jpgCIMG0018-00.jpgCIMG0019-00.jpgCIMG0020-00.jpgCIMG0021-00.jpgCIMG0023-00.jpg

You can see the bolt holes I was referring to in the 5th picture and on. It's got a half-inch gap between the vertical plate and the engine itself. Just bend your plate half-inch sooner and/or use long enough spacers.

You can see the vertical gearbox plates in the last 2 pics. Each pic shows one vertical mount plate. There's a broken piece of metal in front of them that used to be a handle, which made picking the bike up (especially up a couple flights of stairs) particularly easy because of weight distribution. Unfortunately, the thickness of the metal around the handle where it broke was not very good at handling all that weight. Still have the handle, but I doubt I'll ever weld it back on. :(

And ignore the tie wire. That's just a failsafe catch. Hah... :rolleyes:
 
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If you remove the factory gas tank, you will notice threaded holes in the bottom of the flywheel shroud and the insert nuts in the lower plastic extension of the pull start. They are not designed for mounting the engine at all but made for a lightweight fuel tank guard when the engine is used on hand held power tools.

I mention this because I have seen attempts at mounting the engine using these points.
Robinframe2.jpg

This was from a prototype, apparently unsuccessful, from Spooky in Az. It never went further anyway, and mounting an engine from these points may have contributed because IMO it would be extremely flimsy.

As mentioned above, an L bracket or similar fabrication that utilizes the factory designed engines mounting holes is a much more secure way to go.
Of course, it's entirely possible to first mount the engine to a transmission or cvt for example, then use the mounts on the trans/cvt to secure the drive train to the bike.
 
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Well thank you so much. This is the first time I have seen what is under the engine, and also under the fuel tank. I have enough confidence to purchase the motor and contunie building. I'm planning to bolt up the EHO 35 to an X2 cvt which I have already ordered. Very exciting stuff. Will have pics when finished. Mike
 
I think I'll use the two left mounting bolt holes plus two bolt holes on the cvt and that should do it.
 
Heh, yes it works quite nicely.

SAM_0026.jpgSAM_0024.jpg

Not sure what you mean by 2 left mounting holes. The CVT mounts with the standard 4 bolt pattern onto the clutch. Then, I've used the 2 CVT rubber mounts to a fabbed bracket on the frame.
 
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I meant the two threaded engine holes on the bottom plus the cvt holes.
 
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