XX 4 Gearing

[chris68nufc]

This has probably been asked loads of times so i appologise. What is the ideal gearing for York indoors with a Checkpoint 12 x 2 with a kit spur. 84 i think. Thanks. Chris

[barnyard]

i'd start with a 22 depending on driving style batts etc you might need to go up / down 1 tooth

[bigred5765]

depends on cells and track but 20-22 seems ok

[chris68nufc]

I have got a 19 on at the moment. Though it didnt seem very quick. Using IB 4200 with a LRP Quantum 2 speedo.Thanks.

[barnyard]

thats what i'd gear my 10 on so it was a tad under geared might have been ok for a really tight and small track.

[losixxx]

spec motor on about a 26 to 28

[chris68nufc]

Does anybody go off final drive ratios for the Losi or do they do it by feel of the car. I have seen myself get to my last qualifier with the XX 4 and still im not sure of the ratio and feel of the car. What final drive ratio would you recommend? With a 22 pinion and 84 spur you get a final drive ratio of 8.78. Is this classed as ok?

Any help with this would be great as i seem to struggle to get my motors up to full speed.Cheers. Chris.

[Swiss]

Chris

Overall gearbox ratio of a xx4 is 2.3, I always geared mine on 18/19 pinion with a 78 spur which ranges from 9.4 -9.7, (approx) that was on a Spashett 9*2... Never changed the motor, all threw last years nationals and the only trouble I had with thermal cut out was at the Euro's....