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Old 11-09-2008, 11:33 PM   #1
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Default Gearing help for Tekin motor in Xray T2'008

I need some help with the correct gearing for my car. I'm running the Xray T2'008 with a Tekin 17.5 BL motor. I think the correct gear ratio I should be trying to achieve is 3.50 for that motor but I'm not sure. Anyone here have any experience with this that can help?
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Old 11-10-2008, 05:52 AM   #2
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I need some help with the correct gearing for my car. I'm running the Xray T2'008 with a Tekin 17.5 BL motor. I think the correct gear ratio I should be trying to achieve is 3.50 for that motor but I'm not sure. Anyone here have any experience with this that can help?
If your running on Foam tires you should be around a 3.50-3.60 rollout with it. For rubber tires probably start at a 4.0 FDR and go from there.

EA
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Old 11-10-2008, 07:02 AM   #3
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in my 008 us with 17.5 and 57mm foams im running a 92 spur and 46 pinion
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Old 11-10-2008, 07:05 AM   #4
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Sorry guys forgot to mention I'm only running rubber tires.
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Old 11-10-2008, 07:45 AM   #5
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Sorry guys forgot to mention I'm only running rubber tires.
Then go with what EA said. It really depends on how much timing you are running and the track size. I run on a 100x36 track with the timing all the way up on the motor. My FDR is 4.1 - 4.2 depending on the layout.
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Old 11-10-2008, 07:52 AM   #6
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If your running on Foam tires you should be around a 3.50-3.60 rollout with it. For rubber tires probably start at a 4.0 FDR and go from there.

EA
Sounds good, i will start there.

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Then go with what EA said. It really depends on how much timing you are running and the track size. I run on a 100x36 track with the timing all the way up on the motor. My FDR is 4.1 - 4.2 depending on the layout.
How do I know if I should go from 4.0 to 4.1 or 3.9?
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Old 11-10-2008, 08:30 AM   #7
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Sounds good, i will start there.



How do I know if I should go from 4.0 to 4.1 or 3.9?
Mainly 2 things....track size and the temps on your motor. For a more technical track you want to gear higher. If your track is large and flowing then you can gear lower. That's where the track size factor comes into play. You want to gear for your track then watch your temps...they should be under 170 or so.
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Old 11-10-2008, 08:35 AM   #8
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Mainly 2 things....track size and the temps on your motor. For a more technical track you want to gear higher. If your track is large and flowing then you can gear lower. That's where the track size factor comes into play. You want to gear for your track then watch your temps...they should be under 170 or so.
it's a technical track (360 Speedway) in NY. Thanks for the help.
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