Im running a 7.5 and gearing 78/25 if that helps at all it is normally on a high grip astro track with a long straight but have also used it with no issues on shorter tracks!
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Chris
TeamC TM2, TC02EVO & TM4 Abisima, Savox and Orion
Lazer ZX5-FS2, Rudebits DB1, Powered by Orion R10 and all Steered by Savox (and blind luck!).
KoPropo EX10
Kyosho MP9 , OS Speed
Paint by Magoo
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