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Hi the 20" wheel would only give you around 30% more torque but less speed form the exact same motor compered to a 26" wheel. You're best bet would be to return it if you can stating its not fit for propose. Sound like they have limited the bike to 7amp max due to being a junior model but i dont...

The motor winding's are likely different with the more perceived power torque on the low rpm wheel is there any way you can swap them over? or it could be down to the controller being limited and the battery only being half the size . What is the other bike you have?

Sorry just noticed you have a female plug end so need a bit of diy anyway http://www.topbikekit.com/1ebike-9pins-motor-waterproof-extend-cable-connector-60cm-length-p-902.htmlhttps://yosepower.com/collections/electric-bike-accessories/products/36v-brushless-motor-controller or...

https://www.ebay.co.uk/itm/Electric-bike-LED-display-and-twist-throttle/174235555434?hash=item28913f966a:g:gBMAAOSwJHZda6-L AND https://www.ebay.co.uk/itm/Brand-new-Electric-Bike-Controller-for-Brushless-Motor/174285848198?hash=item28943efe86:g:gPcAAOSwZJdewStX I would check with...

Hi the yose rear hubs are now 210rpm with a 18a controller

Thanks Nealh for the heads up :cool: found another display with female connection only...

it is just the motor at top speed looks like a yose kit if so they are now < 210rpm hubs @ 28" = 30+kph only way to get round the speed limit is to over volt it @ 48v = + 30%

You can only up the voltage with a new controller. it would be cheaper just buying a new geared hub than trying to power a power hungry hub! https://wooshbikes.co.uk/?hubkits#rearbpmkit

Sure they would a bit like the good old days of biopace from shimano (1983-1993)i imagine https://en.wikipedia.org/wiki/Biopace

disconnect the battery and read the voltage off the terminals

I have reset my display down from 26" to 24" on a 2.1 Tyre and speed is now correct compared to a speed camera check! A thing to watch out on the new yose kit reading a little higher speed than thee actual speed.

For sure would be a good way to exercise at home while using your bike battery as well

Hi you're chain speed is 7.68m/s = around 27.648 kph so you would need to work out a large gear reduction method so unloaded wheel rotation of around 180-200 rpm. unless you attach a dive thats 90% of the circumference of you're wheel! then the only problem you are left with is the capacity of...

Thats a great result well done!

Hi Depressed, Have you had a chance to get the voltage tested on the battery pack yet? As if its obvious that it is at fault it would require a lot less trouble and effort in exchanging than whole bike! i understand it not so easy if you dont own a multi-meter yourself. You would be better off...

Nice set up you have! just remember your caps are 50v i would expect, so i would advise setting full charge at 4.15v per cell so battery only ever gets to 24.9v X2 =49.8v

I am still waiting for a reply from tpk as to its wiring bafang or kt does anyone know? just found out it is kt wired :p

You are bang on! Nealh the older yose hub must be 317 rpm and the new ones must be slower wound at 227 rpm @ 36v without touching the display which is set at 40kph default They do state that it is 30-32kph max...

Good You might get rid of the back pedal start by a different start up setting speed (0-3) or the pas sensitivity (2-63) also you could change the max current that is on the display to increase the 10kph you are getting with the throttle alone PS: The rubber band affect could be the freewheel...

If it goes 30km with no load there can be no throttle limit set, just not enough power to push you past 15km with throttle alone! you would need to change the current to 15-18a max. do you still have the manual for the c500 display? also what flashes up when you turn the display on ie: 26 or...