Does XRAY plan on making smaller spurs?

CarbonJoe · **Posted:** Mon Feb 11, 2008 06:55:28

Does XRAY plan on making smaller 64 pitch spurs to cope with the crazy rollouts required by brushless motors? There is no way to get there with the range of spurs currently offered by XRAY. For example, a Novak 17.5 (the ROAR approved "stock equivalent") puts the rollout close to 51mm. Try getting that with a 112 tooth spur. Even with a 13.5, I'm running a 96 tooth spur and a 42 tooth pinion.

CT9A · **Posted:** Wed Feb 13, 2008 11:50:46

CarbonJoe · **Posted:** Wed Feb 13, 2008 17:02:21

Nope, Novak recommends a 3.5 FDR for the 17.5 motor, and 4.5 FDR for the 13.5 motor. If you run the 13mm tuning rotor, the recommended FDR is 3.0 for the 17.5, and 4.0 for the 13.5. One of the local XRAY drivers was using an 80t spur (64 pitch), and a pinion in the 40t range.

See http://www.teamnovak.com/tech_info/brus ... aring.html for their recommended FDRs.

CT9A · **Posted:** Wed Feb 13, 2008 18:33:08

brano · **Posted:** Fri Feb 15, 2008 11:38:30

CarbonJoe · **Posted:** Fri Feb 15, 2008 16:28:33

JSR · **Posted:** Sun Feb 17, 2008 13:19:53

adamg · **Posted:** Sun Feb 17, 2008 19:03:43

WEST · **Posted:** Tue Feb 19, 2008 12:44:55

JSR · **Posted:** Tue Feb 19, 2008 12:57:24

CarbonJoe · **Posted:** Tue Feb 19, 2008 17:15:50

WEST · **Posted:** Tue Feb 19, 2008 23:34:01

what FDR's are people running on big technical carpet tracks using rubber tires and a 19t brushed motor? what would be a good starting point?

hopper · **Posted:** Tue May 06, 2008 03:14:20

XRAY - Model racing cars

Does XRAY plan on making smaller spurs?

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