Starting engine issues

[josh1993]

Hi there.
Its been along time since i came on here but I have been having lots of fun with my rc.
There was a gap of about 3 weeks where i didnt start it. I tried last sunday to start it but i had no luck at all. It normally starts pretty quickly from cold and was confused upon why it wouldnt start. temperature was around 9'C that day (48'F). As i was firing it up using my roto starter, i could hear straight away something wasn't right. There was no sound coming from the engine, just the sound of my roto starter spinning. I took the glow plug out, and checked to see whether the piston was moving, and it was. But still no 'boom' coming from the engine. I have come to the conclusion that i have stripped my one way bearing. Does this make sense? because i dont have a lot of knowledge on RC stuff yet.
Could it be anything else? i have a .21 ofna force engine. My other engine ( ofna force .32) also has the same problem :\

thank you in advance

Josh

 

[MotoGod]

Take off the engine backplate and inspect the one way bearing. A lot of times, they are just dirty and need to be cleaned, but they have been known to strip as well ;-)

 

[josh1993]

okay cheers for the advice. As i've never replaced one of these, I'm not too sure.
is it case of just buying another one and slotting it on?

 

[MotoGod]

I would pull it apart first. They can sometimes be revived, but yes if it's dead...it's a very easy replacement once the engine is off the rig.