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Old 01-02-2004, 11:01 PM   #1
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Help: When I pull the pull starter, wheels of car move

I know this topic might not exactly pertain to this forum, but I feel I can get the best advice here, so that is why I am posting this thread.

I have a question regarding an irregularity with my car. It is an Ofna Monster Pirate with an XTM 24.7 Pro Engine.

Here is the problem. Whenever I pull the pull starter to start it, the wheels move forward. The clutch won't "freewheel". For a couple of pulls the engine piston will cycle without the wheels moving, but then all 4 wheels move forward simultaneously.

I am not sure what the problem is. I have owned other nitro cars before with both pull starts and starter boxes and I never had this problem.

The original engine that came with the car had a slighter shorter in length SG shaft than the XTM engine that is in there now. Even though the shaft was a little longer, the clutch assembly went together as easily as it went together with the stock engine.

I thought my clutch springs were too soft, so I changed to harder springs. The problem still persists. Maybe you guys can help me with this dilemma.

Any help/advice is greatly appreciated.
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Old 01-03-2004, 03:25 AM   #2
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Im no expert but it could be that the screw that holds da clutch bell on da sg shaft is too tight. (if you truck doesnt use a screw to hold da clutch bell but somthing else this regard this post) At least thats what happened with my ntc3. I fixed my my problem by addin more shims. Well best of luck with you problem.
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Old 01-03-2004, 08:36 AM   #3
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Default Re: Help: When I pull the pull starter, wheels of car move

Quote:
Originally posted by racer rich
I know this topic might not exactly pertain to this forum, but I feel I can get the best advice here, so that is why I am posting this thread.

I have a question regarding an irregularity with my car. It is an Ofna Monster Pirate with an XTM 24.7 Pro Engine.

Here is the problem. Whenever I pull the pull starter to start it, the wheels move forward. The clutch won't "freewheel". For a couple of pulls the engine piston will cycle without the wheels moving, but then all 4 wheels move forward simultaneously.

I am not sure what the problem is. I have owned other nitro cars before with both pull starts and starter boxes and I never had this problem.

The original engine that came with the car had a slighter shorter in length SG shaft than the XTM engine that is in there now. Even though the shaft was a little longer, the clutch assembly went together as easily as it went together with the stock engine.

I thought my clutch springs were too soft, so I changed to harder springs. The problem still persists. Maybe you guys can help me with this dilemma.

Any help/advice is greatly appreciated.
it sounds like your clutch is stuck in the engaged position, my advised is take it all apart and inspect the clutch springs and the bearings.
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Old 01-04-2004, 07:29 PM   #4
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check your clutch springs. Looks like your clutch shoes touching the clutch bell all the time.
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