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fastbaja5b · 05.19.2009, 10:18 PM

Just as an example Nubz tyres are 146mm and Dirtbonez are 150mm in Diameter, now I found these two to be undergeared in the Flux (high motor temp, low esc and battery temp) on stock gearing, and the Dirtbonez on stock gearing calculates at 35.45mph

Stock GT-2 tyres are 160mm (6.3 inches) to calculate at 37.856mph
HPI Terrapinz are 170mm (6.69 inches) to calculate at 40.199mph

All 3 fall within the safe 35-40mph range on 4s for the Flux on stock gearing, however my experience has shown that the Dirtbonez are a bit on the undergeared side and should go up to say a 22t pinion for 38.99mph

The set up you have shown that "blew up" may be fine on 4s Lipo (38.46mph) but on 6s Lipo it's out at 57.68mph stock gearing and a crazy 72.1mph on a 25t pinion if you take the manual as gospel (which it aint)

And that's not considering the extra weight your alloy bling rims throw in the mix.

Add in a sock over the esc which resticts air flow as the fan doesn't draw air in, merely circulates what is available, I'm not at all surprised it blew up!

	(#11)
fastbaja5b RC-Monster Aluminum Offline Posts: 704 Join Date: May 2008	05.19.2009, 10:18 PM Just as an example Nubz tyres are 146mm and Dirtbonez are 150mm in Diameter, now I found these two to be undergeared in the Flux (high motor temp, low esc and battery temp) on stock gearing, and the Dirtbonez on stock gearing calculates at 35.45mph Stock GT-2 tyres are 160mm (6.3 inches) to calculate at 37.856mph HPI Terrapinz are 170mm (6.69 inches) to calculate at 40.199mph All 3 fall within the safe 35-40mph range on 4s for the Flux on stock gearing, however my experience has shown that the Dirtbonez are a bit on the undergeared side and should go up to say a 22t pinion for 38.99mph The set up you have shown that "blew up" may be fine on 4s Lipo (38.46mph) but on 6s Lipo it's out at 57.68mph stock gearing and a crazy 72.1mph on a 25t pinion if you take the manual as gospel (which it aint) And that's not considering the extra weight your alloy bling rims throw in the mix. Add in a sock over the esc which resticts air flow as the fan doesn't draw air in, merely circulates what is available, I'm not at all surprised it blew up! Say Less, Do More.