| rhylsadar |
11.03.2010 03:18 PM |
Quote:
Originally Posted by RC-Monster Mike
(Post 386385)
Zenoah makes gas motors - not electric. Many/most 1/5 conversions that make use of the clutch may use 10mm shafts to be compatible, but that is an adaptation rather than an established standard imo. Where do you get a 10mm bore pinion or a selection of them? I know I chose 8mm for my pinions based on a couple reasons - 1st, I prefer Neu motors and the 22 series is a nice choice for 1/5 scale - these motors happen to be available with an 8mm shaft(not 10mm). Secondly, a 10mm shaft would inherently limit the the tooth count on the low side, which forces a higher rollout - works on a gas powered Zenoah, but in sensorless brushless, to much rollout leads to cogging at startup along with excessive heat - 8mm allows plenty of shaft strength and magnet adherence, while also allowing reasonably small tooth counts to be used for greater reduction. These to reasons along make 8mm shafts make sense in my eyes. Again, it is also easier to make a sleave for smaller bore pinions than it is to bore out each pinions used, so it makes sense from this standpoint as well.
|
i see the point with the possibility for higher gear ratios. thats true. and yes of course in the US where the neu motors are that popular and the 22 series happens to have a 8mm shaft. of course that is reason for the US market.
however all the people with their mcd's, FG's, hurrax's etc have 10mm pinions ready in their boxes. anyway the 30 series lehner and bolido put 10mm shafts on their big scale motors to be compatible to those people. as there are conversion kits especially for the MCD and FG's this is sure an argument. anyway its not that important.
@patrick
i do not see the rpm-argument. in those big scalers you would go with a very high gear ratio that you need high rpm. between 20' - 30'000 rpm is more than enough for the usual big scalers. and thats not really so much right.
anyway we will see if what factory built 5th or 6th scale electric cars will come in the future from the producers. but to that point the main bulk of people will be those that convert their exisiting petrol models to electric.
bye
rhylsadar |
