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Old 08-03-2016
toooldskool toooldskool is offline
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Default BMax4 111 - pinion size

what size pinion would be suitable for a 8.5T Speed Passion motor, e.g at Kiddy on Astro?
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Last edited by toooldskool; 08-03-2016 at 03:22 PM.
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Old 08-03-2016
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Try a 22 and go from there.
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Old 08-03-2016
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Is that a B-Max2 ver.3 or a B-Max4 III? In case it is the 2WD car I'd say use a 25t together with the 80t spur gear that comes in the kit. IIRC Yokomo included a 25t pinion with the original B-Max2 and recommended it for a 7.5 turn motor. It worked pretty well on any kind of track in mine back in the day paired with a Thunder Power 8.5.
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Old 08-03-2016
toooldskool toooldskool is offline
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sorry, i should have said , BMax 4
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Old 08-03-2016
PJC PJC is offline
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What size spur are you using? 84?
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Old 08-03-2016
toooldskool toooldskool is offline
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Yes 84
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Old 09-03-2016
ayske1 ayske1 is offline
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Those using the 84 spur, is it the white one. Do ppl find them less durable than the 87 for mod?
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Old 09-03-2016
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dikke hond dikke hond is offline
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Quote:
Originally Posted by ayske1 View Post
Those using the 84 spur, is it the white one. Do ppl find them less durable than the 87 for mod?
Yes, the white spurs are softer then the black spurs. Tried a white one once, destroyed it in 1 pack...
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Old 09-03-2016
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You are just too fast DH
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Old 09-03-2016
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Quote:
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You are just too fast DH
Yup, that 4.5T BB motor is just not fast enough
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Old 09-03-2016
ayske1 ayske1 is offline
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Quote:
Originally Posted by dikke hond View Post
Yes, the white spurs are softer then the black spurs. Tried a white one once, destroyed it in 1 pack...
thought so, was happening to another buddy as well and sworn that my mesh was fine etc
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Old 09-03-2016
PJC PJC is offline
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Quote:
Originally Posted by toooldskool View Post
Yes 84
Go for 21 or 22 depending on the timing you may have added.
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Old 02-05-2016
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Hi All,

Sorry to hijack but starting a new thread seemed a waste, I am going to be running a BMAX4 iii in an indoor endurance race. Thinking of using a 10.5t with maybe a little turbo at the top end to get down the straight a bit quicker but of more consideration is keeping temps low as the race is 2hrs24mins. Does anyone have any recommendations for pinion and am I thinking along the right lines going for a higher turn motor?

Thanks
Daz
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