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Thread: New Guy With Build Issues - Top Shaft/Spur

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Old 10-21-2016, 10:23 AM   #1
Quarry Creeper
 
Join Date: Jun 2016
Location: bay area
Posts: 205
Default New Guy With Build Issues - Top Shaft/Spur

Hi Guys - Well I got my kit delivered from Amain Hobbies yesterday. I started working on it last night and got as far as building the transmission and I have some issues.

The top shaft/spur gear has a ton of play. It moves forward and back about 5mm. I read the instructions and rebuilt it twice with the same result. I'm 100% certain i followed the instructions to the T and used the right tube spacer.

Is this normal or a defect? If the latter is true does anyone have a DIY fix to it?

Are there other issues i should be aware of while building? I'll post pics when im done.

Thanks in advance!
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Old 10-21-2016, 10:31 AM   #2
I wanna be Dave
 
Join Date: Jan 2005
Location: Raleigh-ish vicinity
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Default Re: New Guy With Build Issues - Top Shaft/Spur

There is already a thread about the topshaft play

Lots of transmission/spur play!?
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Old 10-21-2016, 10:37 AM   #3
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Location: Sidney
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Default Re: New Guy With Build Issues - Top Shaft/Spur

bilinvic's SCX10 II

It is on post #13 that he talks about this issue and how he solved it. He's got some good pics of the process as well. Hope this is what you are looking for and that it helped.
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Old 10-21-2016, 10:45 AM   #4
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Location: San Diego
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Default Re: New Guy With Build Issues - Top Shaft/Spur

On my kit, I substituted a longer spacer for the one the instructions say to use. I noticed that the bearing opposite the spur gear on the top shaft wouldn't stay seated when I used the spacer the instructions showed. I don't plan to use the 2 speed, so it's a non issue for me to use the longer sleeve.

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Old 10-21-2016, 12:05 PM   #5
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Default Re: New Guy With Build Issues - Top Shaft/Spur

Quote:
Originally Posted by SCX10Newb View Post
bilinvic's SCX10 II

It is on post #13 that he talks about this issue and how he solved it. He's got some good pics of the process as well. Hope this is what you are looking for and that it helped.
ok...so according to bilinvics the play is normal?
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Old 10-21-2016, 12:28 PM   #6
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Default Re: New Guy With Build Issues - Top Shaft/Spur

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Originally Posted by saddlesore View Post
ok...so according to bilinvics the play is normal?
If it is just a small amount of in and out play, so long as good spur to pinion contact is maintained, it is harmless. But if the spur has movement in any other direction, like I had when the bearing would not stay seated, it will cause a problem.

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Old 10-21-2016, 04:07 PM   #7
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Default Re: New Guy With Build Issues - Top Shaft/Spur

I put a pin thru the plastic spacer to remove the in/out play
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