I am trying to shim the clutch bell on an OS VZB enginee but think the bearing may be too deep.

The first pic shows the inner bearing:



The second pic shows the out bearing:


The problem is the crankshaft does not extend past the outer bearing. It sits just inside the outer bearing and therefore, is stopping me from shimming it up !

Is the outer or inner bearing too thick ?

Any help would be appreciated.

Looks you you need the losi clutch washer. It is a washer with a little crank extender on it. It works perfect.

http://www.amainhobbies.com/product_...ware-Set-8IGHT

Okay thanks...will check it now

I had the EXACT same problem with my Losi bell, the Losi washer worked purrrrrrrfect.

the flywheel bushing might be too long. If it is too long then it will extend past not allowing for proper shimming. You might need to file it down start from the narrow end this way it will seat properly.

Its because of the clutch bell. Thats how its made.

It looks like it needs a 3rd bigger bearing? Isn't that space for a 13x5 bearing?

Is that a Mugen clutch bell or a Losi clutch bell? If it is a Losi then you do have the wrong bearing. In any case how close is your flywheel to the engine block? More often then not it is the brass bushing that is the problem and it needs to be filed down unless your flywheel is already touching the block or really close, in this case you have the wrong clutch bell, a Losi clutch bell is not meant for a Mugen flywheel and set up, they do fit but the flywheel is different causing the same problem you are having. There are usually only 2 causes for the problem you have

1. wrong clutch bell for flywheel

2. Brass bushing is too long for your engine resulting in your flywheel being too far out thus not being able to tighten it up.

If that's a Losi bell you are missing the 5X13 bearing for the inside. Actually it don't matter what bell it is you are missing the proper inside bearing.

Looks like a rtr Kysoho bell thats made to take a roller bearing, a normal bell will have a flange in the middle for the bearings to sit against, it doesn't look to have one.

so the best solution is replace the flywheel bushing or file it to make it shorter? I having the same problem with serpent clutch system to pairing with Taiwan xxx engine

I had the exact same problem on the weekend... Losi bell, washer and correct bearings...

The solution was to file down the base if the collet which moved the whole fly wheel closer to the front bearing and the end if the crank shaft closer to the face of the bearing.

Had my mate and I scratching our heads for a bit, but turned out to be an easy solution.

Looks to me you've got the wrong bearing in it. Like posted before 5x13 goes in it.

I mix and match different clutches with clutch bells and flywheels all the time. BUT, I never mix and match the Losi 8 clutch with anything else. The Losi 8 parts go with Losi 8 parts and nothing else.

I have a few issues with different things on my cars but clutches is never one of them.

I picked up a supply every possible kind of shims, spacers, and washers I could find including 3mm X 4.9mm X.1 that use to make up that difference. And that's even with the Losi end washer for the screw that holds it on.

Duratrax makes those little end washers too that seat part way into the bearing but it's still important to keep a mm of slop there. I have that set and 1 is a little too short and the other is a little too long. Comes with 3 different lengths of that little shank to go inside the bearing.

Last night, I used one of those washers and 3 of those 3mm X 4.9mm X .1 shims to get that 1mm play for the bearings on an OFNA clutch/flywheel on my Beat 5.

I think sometimes there might be a little bit of difference form one engine to another on the length of shaft sticking for the clutch. Variations in tolerances or something. So the idea of filing down the collet comes in. That's probably the best idea if there's enough space between the flywheel and crankcase but I'm too lazy to file anything if I can at all help it.

You can also get serpent shim:
3 x 5 x .3
3 x 5 x 1
This shim is + in this hobby