CB shims?

[MikeK1981]

Hey guys, I need to shim my CB to get some play out of it, what size shims do you guys use? I've been having problems with the bearings failing and this time I used a glow plug washer between the bearing and that black collar spacer and it seemed perfect with just a hair of play so I knew it wasn't too tight. For some reason the CB screw backed out and I chewed up my only CB so I have to order a new one of those. I want to get proper shims and shim it the right way to eliminate that as a problem, and I'll make sure and loctite the screw good and let it dry next time. You think using the glow plug washer as a spacer caused the screw to back out or was it just a coincidence?

 

[MikeK1981]

Oh and I'm running HPI racing CB's on an LRP Z.28R Spec3.

 

[Judicator]

check bukupower.com . He makes a clutch setup and sells shims for it.

 

[tallone09]

here some don't really if they work but look like they would http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXNT03s

 

[MikeK1981]

Link is invalid product number.

 

[tallone09]

try this http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXNT03

 

[tallone09]

If that don't work hers part no ofna 10099

 

[sharkattack99]

this is the shim kit i use

http://www.amainhobbies.com/product...ucts_id/2940/n/OFNA-1-8-Clutch-Bells-Shim-Kit

 

[frddyj]

try this http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXNT03

you got it.

 

[Cwheeling]

That ofna kit is the real deal!

 

[rokie1432]

for me, i just cut the correct size off fuel tubing...and works well....

 

[MikeK1981]

Well i only need a very small amount of shimming, maybe 1mm. I'm not sure fuel tube would work but i guess it might. I need a CB too though so I may as well order the shims too since I'm gonna be waiting on shipping either way.

 

[xtremsavage]

The Ofna shim kit is the same one I used. As far as the screw backing out, it either wasnt tight enough or the lock tight wasn't fully cured. What I do is mock everything up to where the head of the screw is tight up against the crankshaft and then shim as needed. I don't even use the spacer anymore, I just use shims to fill in the gap. Once I've got everything set right, I pull the screw back out, put a small amount of lock tight on it, and then crank it down as tight as I can get it. Haven't had a problem doin it that way since. You just have to make sure you have about .5mm of play (CB slides on the crankshaft) for heat expansion.

 

[88gtanotchback]

question while were on the subject, do you guys use a little shim on the flywheel were the shoe sits?

 

[MikeK1981]

Good question, I was wondering that as well. I haven't been running shims there either.

 

[xtremsavage]

question while were on the subject, do you guys use a little shim on the flywheel were the shoe sits?

Do you mean before you slide the CB on? Between the shoes and CB? I don't remember adding one. I'm just usin what came with the firoini clutch set-up.

 

[88gtanotchback]

ya i don't run one there either, but in my new rc mag i saw a right up on it saying to use them to prevent drag. made enough sense to try it out i guess, but ive never had issues without them. i was just curious what you guys do?

 

[88gtanotchback]

Do you mean before you slide the CB on? Between the shoes and CB? I don't remember adding one. I'm just usin what came with the firoini clutch set-up.

i mean between the flywheel and the shoe itself. just a little wee shim.