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#1
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1/12th scale recap
I am thinking about doing the 1/12th scale national up at Jarrow in november but then i realised, i have just about completely forgotten everything about setting it up to what tyres i need. So all help would be appreciated. but what i really need to know is how would i work out the ratio for pinion size as i have completely forgotten, will probably have a brand new set of fronts and rears.
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B4 5.5 L4 19T RC18t Mamba 9200Kv
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#2
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i've found this on another site
For 12th scale: Rear Tire size x 3.14159 / Spur Gear x Pinion
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#3
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Quote:
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o0ple Trader Feedback NE Venue's New & Old my space on YouTube CFR RCTV Channel Glenn Atterton BRCA 2005 1/10th Off-Road Veterans Champion LMP12 National Champion 2003/2004 / F3 class |
#4
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So what would be a good rollout for a 19turn motor as mine at the moment is around 48 but i dont know whether that is too high or not. My spur is 98, pinion is 32 and tyre size is 47mm. But if i put a new set of tyres on then the diameter would be 51mm.
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B4 5.5 L4 19T RC18t Mamba 9200Kv
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#5
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I'm far from an expert, but based on what I've read a roll-out of 48 mm is in the right area for 19-turn.
To work out what pinion size you need, use the following formula: Pinion size = [required roll-out / (Pi x tyre diameter)] x spur size So assuming 48 mm of roll-out, a tyre diameter of 51 mm, and an 98-tooth spur gear, you will require a 29-tooth pinion (approximately). Hope that helps.
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#6
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Which 19T, they all need differing ratios
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o0ple Trader Feedback NE Venue's New & Old my space on YouTube CFR RCTV Channel Glenn Atterton BRCA 2005 1/10th Off-Road Veterans Champion LMP12 National Champion 2003/2004 / F3 class |
#7
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I have got a team orion Elite V2 19T. I believe they have a little more torque than the averge motor so they may be able to handle a slightly bigger pinion.
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B4 5.5 L4 19T RC18t Mamba 9200Kv
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#8
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adjust pinion/spur accordingly for 48dp Quote:
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o0ple Trader Feedback NE Venue's New & Old my space on YouTube CFR RCTV Channel Glenn Atterton BRCA 2005 1/10th Off-Road Veterans Champion LMP12 National Champion 2003/2004 / F3 class |
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