Nope. They're ISIS fittings. You need tapered square ones.
The ones they sent me were KTM branded Miranda units.I think you chose the right length. Which ones are they? I have 140's on at the moment but they're too short. I hope my Miranda Kappa O 155's arrive soon.
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Depends on which Yamaha motor you have. I think the PW series are square and the PWX are ISIS. I have a PWX and changed to 150mm ISIS. from here
I might be wrong master Steve but i think many Ebikes have a BB a bit lower and i compared mine to a bike a bit wider arm to arm. These 2 factors might generate more pedal strikes. The lower BB is to keep the added weight less obvious. Also some systems have a delay in the assist so the rachet technique might be less effective. Maybe with the added speed we tend to look more at a distance and i can say my 175 stock were a pain.On another Forum someone was asking why BB height varied so much from bike to bike. He got the usual answers about the difference between DH bikes and XC bikes, the amount of suspension travel etc. But then someone said that if you assume that the bike is sagged by 30% the BB will drop by 30% of the travel on a FS and by about one third of that on an HT (positioning of the BB horizontally between axles). Surprisingly, the heights of all the BB centrelines looked at (big travel, small travel, FS and HT) came out at 290mm give or take a bit. By all means check your bike, but don't crucify me if you come back with 285.
Is there a design parameter here that the bike designers use, ie aim for 290mm and if its less, shorten the crank by that amount (again give or take).
I suppose that the real parameter is the height of the lower pedal axis. Therefore on a nominally standard 170mm crank length, the pedal axle height would be 120mm. On my Focus Jam 2 29er, my 30% sagged BB height is 285 and my crank length is 165, ie axle height is 120mm!
Designers have to target something, even if its just a rule of thumb, or something the industry knows "just works!"
Anyone else? Or are you all bored to tears by now?
If this is true, and all designers are targeting 120mm, then all the chatter about needing shorter and shorter cranks because it's an emtb, is just that; chatter!
I think you chose the right length. Which ones are they? I have 140's on at the moment but they're too short. I hope my Miranda Kappa O 155's arrive soon.
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Yeh, still loving them they are 140mm now as the 137’s I did have on had a wider Q factor. I thought I would try something narrower and these have been brilliant. Probably done around 1000kms on them so far and still happy with then.
What is the right Q factor? Q4/Q8 ?
Please remember all, I have these on due to the very steep terrain I have where I ride. Very tight, steep, rutty, lumpy, natural, single track where you have to continuously pedal otherwise you stall and fall. I still fall or dab, but not due to pedal strike anymore
That all depends on you as a rider and how it feels to you. I was happy with either.
So you mean, if you're ex-cowboy you need bigger q factor
Not sure of what is q4 q8 etc....So you mean, if you're ex-cowboy you need bigger q factor
