Need help with HPI R40 tranny

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alx2008

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Please Read

Hi Everyone I have an HPI R40. When i start the car with the starter box, and i press the gas, all it does is just sit there. But when i turn the car upside down, i actually really goes. I have an OS .12 TR. I figured that it has something to do with the gears. With my friends car, when he pushes his car backwards, the spur gears stop when the car stops. But when i do it, it just keeps on spinning. So that is why i think it is with the gears. Can someone really help me!!!!

Thanks
 
I'm asuming its a one way bearing in the tranny some where but only on road I've had is an rs4 so I'm not totally positive.
 
Re: Please Read

Originally posted by alx2008
With my friends car, when he pushes his car backwards, the spur gears stop when the car stops. But when i do it, it just keeps on spinning.

Your friends car has a blown clutch bell bearing - most likely the thrust bearing. Yours is opperating correctly.

Although i have no idea why it only runs upside down. Got me stumped on that one.
 
so you dont know anything about the upside down part
 

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