one-way bearing blown

[edgie345]

Ok I just got my USED savage and the one way bearing was blown. So I replaced it with a new one and using the rototstart I managed to blow the new bearing on about the 15th start. (engine kept stalling and did not idle for more than 10-15 seconds) I'm not sure what it could be. I've searched already and have found little info to help if anyone can enlighten me on what might be going on I'd really appreciate it.

 

[kwong2001]

With .21 engine pullstarts, because of the high compression, the one-ways have a tendancy to blow

My hyper 8's is starting to go. I just spray it with some nitro clean and that gives me a few more runs before I have to clean it again

 

[Çh®i§tiªñ]

Try cleaning the bearring first.

However, the bearring may just be backing out enough to cause it not to engage. Is this on the stock engine?

 

[ImBroken]

In desperation, I once soaked my one-way bearing in Isopropyl rubbing alcohol for an hour or two. Took it out, wiped clean & reinstalled. After 2 months it's still working great... Go figure..

 

[LarryA]

If you are using a Roto Start, do not run the starter for more than a few seconds at a time. Constant opertion of the starter may heat up the one way brearing and cause it to fail. I had one bearing go bad and since never run the roto more than the few seconds. Contrary to what others do, I use a very slight amount of lube on the internal gears of the roto start but keep it away from the one way bearing. One thing I found when my bearing went bad was that the roto start case had become loose and the screws had backed out. This caused the threaded holes to almost become oval. One screw at the top of the backplate actuall cracked the backplate. I use JB weld and built up the corners of the endplate to strengthen them (being sure to keep the JB off the face of the plate and threads. Use blue locktite on the screws to help prevent them loosening up. Also, watch when you inster the starter rod from the rear. Be sure you are not going in at the wrong angle and appling stress to the rotor start asembly. On my truck, I must insert the starter above the rear bumper. I also had a lot of tuning problems until I switched to another make of carberator, this has made a world of difference in the way it is running. Much better and I'm finally happy with the way the stock 21BB is running.

 

[edgie345]

The rotostart is on the stock engine. I'll try cleaning the bearing and putting it backk on because it still has a little bite on it. I also itsert the rotostart shaft thru the a space in the bumper so as it goes straight in. Well thanks for the advice and I'll try cleaning the bearing.

 

[JaReD116]

what do you guyes use to clean your bearings? Mine keeps slipping on my xxxnt. I have cleaned it and cleaned it and cleaned it. But it just keeps slipping. Then when it is doing that it is a beast to start. What should i use?

 

[Maxxcrazy88]

You might want to try replacing the bearing and the starter shaft Jared

it's the only way we could get the one on kk's pro .15 to work...............