ChitownRC

Howdy, first nitro car and all. A friend saved it from the dumpster but decided after a while not to deal with it.

Got it mostly complete. Went over everything, but I'm still missing a few minor pieces like the battery and receiver trays.

But, I got the car to fire over and it ran for a bit, but now it won't fire over again. I'm hearing a rattling from either the 2sp tranny or the clutch bell.

What is the proper method to adjust the clutch? I can't find anything in OFNA OB4 manual PDF's. Also, this is the first nitro car I've ever worked with. Previously only dealt with electrics.

I assume its mostly the same system as nearly all use centrifugal clutch setups. But your tips would be appreciated.

is your glow plug good? That might be why it wont start

No, it was definitely the clutch. I got it to work now run now. I just have to tune the engine back to factory specs and then start over from there. But its coming along.

Runs so rich that after a while it quits and is a bitch to start again. I tinker with it every couple of days and it gets closer every time.

Glad to see another OB4 around.

I've been running one for 3 years now and havn't even concidered buying anything new.

I know alot about it so if you need any more help I would be happy to help out.:joy: :joy: :joy:

I dont know what kind of clutch shoes would be in that car. But you could take some sand paper and rough them up a bit so they grab better. IF you do that make sure you clean the clutch bell with denatured alcohol to get the junk out of the inside of it.

Any Exprience With Team Orion .18 Wasp Motors??

I Found A Guy With 38 Of Them On Ebay For Less Than $60 Shipped.

1.75 Hp And 38000 Rpm. I Wonder What Pipe Would Go Good On That Motor.

Hope It's Not Too Much Motor. Either That One Or The Revo 2.5r Is Going In For The New Season.

I don't, but I think others on the site have. Try posting your question in the engine/ drivetrain section.

BTW, Do you have a link for that auction?

that is a horrible motor to answer your question. Every one I've ever seen had problems. Tuning issues mainly.
You get what you pay for most of the time.