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GEAR RATIO

Old 09-19-2018, 09:15 AM
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Red face GEAR RATIO

HELLO I WAS WONDERING IF ANYONE CAN HELP ME I AM RUNNING A XRAY T4 2018 AND I AM USING A R1 ESC WITH R1 17.5 TURN MOTOR AND I NEED A FINAL GEAR RATIO SO I KNOW WHAT PINION TO RUN. I AM USING THE STOCK SPURE 84 TOUTH 48 PITCH I NEED HELP WITHTHE PINION TO GET A GENERAL START FROM. I AM RUNNING IT ON SPEEDWORLD RACE WAY OUT DOOR ON ROAD TRACK. ANY HELP IS VERY APRCIATED.
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Old 09-19-2018, 09:23 AM
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Originally Posted by JOHNATHANWALKER View Post
HELLO I WAS WONDERING IF ANYONE CAN HELP ME I AM RUNNING A XRAY T4 2018 AND I AM USING A R1 ESC WITH R1 17.5 TURN MOTOR AND I NEED A FINAL GEAR RATIO SO I KNOW WHAT PINION TO RUN. I AM USING THE STOCK SPURE 84 TOUTH 48 PITCH I NEED HELP WITHTHE PINION TO GET A GENERAL START FROM. I AM RUNNING IT ON SPEEDWORLD RACE WAY OUT DOOR ON ROAD TRACK. ANY HELP IS VERY APRCIATED.
your best bet would be to ask the ones that race at the track
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Old 09-19-2018, 09:25 AM
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All caps comes across as yelling.

A reasonable start, I think, would be 45 pinion, 100 spur. The example I found was for the tamiya track. 4.22 overall ratio

http://site.petitrc.com/reglages/xra...USA2018052427/
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Old 09-19-2018, 09:39 AM
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might help find combination. Pay no attention to the highlighted red. Just what I was trying at completely different track. But the chart helps.
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Old 09-19-2018, 09:45 AM
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Should help with combination. Though some at the track will have better ideas
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Old 09-19-2018, 10:27 AM
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Speedworld has a Facebook page. They answer questions pretty quickly.

https://www.facebook.com/SpeedworldRaceway100/
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Old 09-19-2018, 10:31 AM
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Originally Posted by Marcos.J View Post
your best bet would be to ask the ones that race at the track
Always the best plan...

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Old 09-20-2018, 12:03 PM
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[QUOTE=JOHNATHANWALKER;15302477]HELLO I WAS WONDERING IF ANYONE CAN HELP ME I AM RUNNING A XRAY T4 2018 AND I AM USING A R1 ESC WITH R1 17.5 TURN MOTOR AND I NEED A FINAL GEAR RATIO SO I KNOW WHAT PINION TO RUN. I AM USING THE STOCK SPURE 84 TOUTH 48 PITCH I NEED HELP WITHTHE PINION TO GET A GENERAL START FROM. I AM RUNNING IT ON SPEEDWORLD RACE WAY OUT DOOR ON ROAD TRACK. ANY HELP IS VERY APRCIATED.[/QUOTE. Start with a 38t pinion. Finals out @ 4.2
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