DAND214 wrote:The Stig,
I'm running the 128 rear hub at 48v and a modded 6 fet controller at 30 peak amps. And at this time it is hard to tell how long it will last due to the cold we have at this time of year. The hub and controller are running cold to just warm at 32f deg. As drag from he bmc and the Cute one is also hard to compare as the BMC is laced to a 700 wheel and the Cute is on a 26". since I am more of a DD user I see now drag what so ever during coast or non power pedaling. Till it warms up here and there is some heat there is no way to tell if the Cute one will last under the laod I put to it at this time. All I can tell at this time is they seem to work great sensored not sensorless (I did try it on a test stand) it is very smooth and kinda quiet. My concern is the nylon gears inside just like the Bafang, what will it take to melt them down and where will I / we find replacements. The gears are not like the Bafang, just a sprur gear it's a straight cut gear on top of a angle cut gear off the sun gear.
So all I can tell you at this time wait and see or jump in and learn the good and the bad with the rest of us.
No riding this weekend due to snow and I'm off downtown for a wedding and some super bowl fun.
the 128 is quite different internally to the 108 motor. Any comments i made about drag were related to the 108 which uses a higher gear ratio than typical hub motors. I'm sure the 128 will have a typical gear ratio of approximately 5:1.
I will have to get a 128 motor laced into a rim and give it a try to see how it compares to the Bafang. I've been using the new front Bafang lately. It's a nice little motors. About the same size/weight as the 128.
cell_man wrote:The freewheel is still in the Sun Gear but like any geared hub motor there is drag just from the fact that the rotating wheel still has to turn the gears and this will add some drag which increases with speed. The Bafang front motor has pretty low drag as does my Puma motor but I did find the 108 had more drag than these. I can only assume this is due to the higher gear ratio. It's not a dea breaker as they are a nice little motor but I do think it's worth a mention. I think the only geared hub motor that has no drag is the heinzman as it actually disengages the single planetary gear when freewheeling AFAIK. The Tongxin which uses a kind of roller gear is also supposedly very low drag.
full-throttle wrote:Looks great! Could you post more pics please.
Are you going to keep it as a singlespeed? Bet it weights close to 20kg.
drewdiller wrote:Got my laced wheel back from the wheel builder. Should have just gotten a truing stand and done it myself.
Users browsing this forum: No registered users and 6 guests