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Old 02-06-2009, 08:57 PM   #1
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Default Fly wheel slightly turning with Roto start

Hey everyone

I am have a new problem with my sons hyper 7. I took out the pull start from the get go and put in a roto start back plate. The best way that I can explain whats going on is it feels like the engine is wet when I let the buggy sit overnight.

When I put the roto start on the fly wheel moves but not enough to turn over the engine. The only way I have been able to fix this is by pulling off the engine, pipe and back plate to clean it. When I put it back together its like nothing is wrong. Why is this happening. Again the best way I can explain it is it feels like the engine is wet after sitting overnight.

Your thoughts
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Old 02-06-2009, 09:13 PM   #2
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You are stripping the one way bearing, or the shaft, or both...Those damn rotostarts are too strong to be used on engines that are made for pullstarts, especially when the engine is new.... The oils and fuel are making it spin when its supposed to catch the Bearing..so when you clean it, it grabs..as soon as it gets lubricated again, it slips....The Losi Mach 427 engine is made for a rotostart....get a used starter box......you are going to keep stripping One ways
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Old 02-06-2009, 09:13 PM   #3
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Hi,
Not sure I follow what wet means, Like hydro locked?

If you remove the glow plug, does it still exibit the same issue
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Old 02-06-2009, 09:18 PM   #4
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Jaz thanks. Yes my fault I should have done this like you said in the first beginning. Will I have to change out the motor mounts to fit the starter box?
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Old 02-06-2009, 09:20 PM   #5
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Quote:
Originally Posted by schultztec View Post
Hi,
Not sure I follow what wet means, Like hydro locked?

If you remove the glow plug, does it still exibit the same issue
Yes it does. What I mean by wet is when i put the roto start on it spins without catching and creates a slipping type action.
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Old 02-07-2009, 10:29 AM   #6
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Quote:
Originally Posted by dishsoap View Post
Yes it does. What I mean by wet is when i put the roto start on it spins without catching and creates a slipping type action.
The one way bearing is what slips. It needs a shot of brake cleaner to clean it up. Can you post a picture? Is the bearing inside the engine case or outside?

A bump box off ebay would be a vast improvement. See them go for 15-20 bux lately and you can make a jumper wire setup easily and just run it off your car batter.
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