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Old 06-03-2015
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Default srx2 gearing

Hi all.I'm running a srx2 with a 6.5 x20 lrp motor and a tekin rs esc.at the moment I am running the kit spur with a 21 tooth pinion.even in this cool weather I managed the thermal my esc on the last lap of a run.can any one help with what gearing I should b running.
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Old 06-03-2015
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Quote:
Originally Posted by terrybmw View Post
Hi all.I'm running a srx2 with a 6.5 x20 lrp motor and a tekin rs esc.at the moment I am running the kit spur with a 21 tooth pinion.even in this cool weather I managed the thermal my esc on the last lap of a run.can any one help with what gearing I should b running.
Hi Terry

You are undergear pal.
I run Orion electrics as you know, with a 6.5, standard spur, I am on a 24 on indoors short tracks and 26 on the bigger wide open tracks
You can thermal being under and over geared so bare that in mind
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Old 06-03-2015
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With that motor try and get close to 8.8 on the overall gearing, LRP motors do tend to need gearing a little lower than the orion motors.
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Old 06-03-2015
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Thanks for that chaps.what is the final drive so I can work it out
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Old 07-03-2015
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The final drive ratio is 2.43 so i would start with 78/22 which is 8.62 but if you could go 76/21 that would be 8.799.
Here is a link to the gear chart http://www.petitrc.com/setup/serpent...RX2_GearChart/
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Old 07-03-2015
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Its still under geared - LOL @ Brain
Get the thing wound up - get some speed - you've already done well with it!
I agree with Brain the LRP might be a pinion or even 2 behind the Orions but get at least a 23/24 on there and ENJOY - LOL

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Old 07-03-2015
Plasmag Plasmag is offline
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Default 10.5t boosted

Hi all could some one give me a ballpark ratio for 10.5t boosted? Motor is a Corally silver series 10.5t
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