shankdog626

I just got my motor together, new clutch parts and all.
I gas it up, warm the motor up via a heat gun, go to prime
the fuel line and put it on the starter box and it gets about
1/2 a turn on the flywheel and completely freezes up.

I pull the motor out because I notice the clutch bell is
the culprit because when I put the car on the grond and go to
roll it, it's locked up.

so motor out and I attempt to spin the clutch bell and it doesn't budge.
I loosen the front screw, spin it now and put it back together, put the
motor back in hook everything up and spin it again and everything
is free (center diff and all) go to start it again and BAM it locks up again

This is now two tanks of gas I've thrown out.

Any Ideas ?
Please

chedster

Well since you say it is new clutch parts we can rule out bearings and broken springs. I say your clutchbell shimming is way off and rubbing somewhere. Make sure you have only a very small mount of play in your clutchbell

shankdog626

Yeah, I have it back out again and pulled apart the clutch bell and bearings.
Funny, when I went to loosen it and/or retighten it in place before removing
the parts it bound up the more I tigthened it.

So I completely took it apart and reassembled it by the manual and
it was basically the same but it might have been the washer in the
incorrect position in comparison to the shims. The manual is very
grey in this area as to which one go where. (Kyosho)

Buttoned it all back together again and tighten it and loctited the end screw
and it seems to be okay for now. I'm gonna throw it back in the trug and
NOT waste gas this time...haha.

Thanks,

shankdog626

Update:

It bound up again....can't figure this out.

need help

RcRacer37E

Sirio shouldnt be that ruff to break in. Make sure the mesh between the bell and spur isnt to tight. Just a bit of back lash between the bell and spur. Everything eles sound good.

shankdog626

the mesh is good.

The bell seems to locking up against the rest of the shoes and flywheel.
All brand new parts assembled in the right order. Just as soon as it (flywheel)
hits the starter box wheel it the (bell) binds up.

chedster

You probably need to add a shim or two infront of the clutch nut, this will push the clutchbell out away from the cltuch shoes. Also make sure your clutchbell screw is not binding the front bearing. I run a really small washer with the screw so I can snug the screw down and the clutchbell can still spin freely.

hkenvy91

maybe too short of a collet?

shankdog626

good question.....I DID use the gold one that came with the motor instead
of the one that came with the kit.

Should I switch em out?
I kinda remember them being about the same.
That and I had a black washer in the clutch kit
that was not called for in the kyosho manual.

fish_62

Are you 100% sure your clutch shoes are not on backwards, sure sounds like it.

hkenvy91

fish , you can run shoes backwards. its a tuning option

shankdog626

No Fish, I can assure you they're not on backwards but thanks for
the question and/or help.

hkeny91, I think you were right about the tapered collet being too short
thus forcing everything to come back toward the flywheel.
That, and I went with only 2 shims instead of 3 after the last bearing.

Too tired to reinstall it tonight, I'll let you know tomorrow how it went.
Thanks again for the help.

Screw up enough things a few times and you get to know your car
REAL WELL soon enough. I'm 3 months into it so far.

kweezinarts

before popping engine back in make sure the bells spins freely. if so then its not a shim/washer problem...

as for the collet i hope that solves your problem...

phattracker

My Feedback: (1)

i had the same exact problem with my force 28. i ended up putting a shorter screw in the crank to hold it all together, and it fixed it for some odd reason.

Bongi

Try changing the collet with the one that came in the kit, I had this problem before as well with my collet that came with the motor. Also don’t feel the manual is always right, if you know how the clutch should work then assemble it with the spacers in the place by feel, I have one spacer between the clutch nut and bearing of the bell and another at the end of the bell [manual says there should be two spacers after nut] but a little play will only help.

Bongi

Also are you using a clutch tool to tighten the nut good, if it is not tightened properly sure you will end up with a clutch bell hooking on something.

rageworks

A half a rotation of the flywheel and the motor stops turning?
Sounds like the piston is sticking at T.D.C. . Have you ever
started a new motor with a starterbox before? Ha!Ha!Ha!................

RcRacer37E

hkenvy hit it, use the collet that come with the kit. Ofna set up use ofna collet. Run the shoes trailing not leading.

slayerphonics

sounds like the shimming is off, and your binding the clutch bearings, i've done that before.

shankdog626

hkenvy was right about the collet being too short.
i changed to the one from the kyosho kit and all is good.

"have you ever started a new motor on a starterbox before"
why the smartass question, I'm not sure. I was merely off
inside the clutch assembly with the factory motor collet.

Yeah, believe it or not I actually used a heating gun to warm the
engine first.....wow, who could imagine? TDC doesn't make the
clutch bell stop turning DUH.

RcRacer37E

All good dog, well get you running and those who toss around silly remarks, you need not take their advise. Heat to around 150 and shell fire right up, no more wasted fuel...lol

shankdog626

Cool nascardad, you've been a tremendous help as many others.
I hope to have it fired up after work today.
In the meantime of being down for a couple weeks now
I've been researching another RC purchase....a buggy.
Now, I know this is a truggy forum but I also know many of
you guys have buggies as well.

Choices:
Assoc. RC8 Race Spec buggy (RTR) cause I'm not into another build or
The Losi 8ight (RTR) or the Turmoil (RTR)?

That and I'm trying to make it not so obvious to the wife I got another
car....hahaha !

shankdog626

A big fat no go.

I pulled it apart now 3 times. It actually fired up for a few
seconds and idled and quickly sputtered and died.
Went to refire it and the clutch bell locked up to the flywheel
again.

I'm at my wits end with this and ready trash can this pile !

chedster

Can you see clearence between the clutch shoes and the clutchbell? The clutch bell should not even touch the flywheel. You got some pics by chance?

shankdog626

yeah, I'm thinking I need to remove the little shim between the
clutch bell inner bearing and the big shim in front of the shoes.

Here is a pic of how things go together in order.