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wheel 20"......20 x 2.25 (57-406) 52 x 11 to 80 rpm =37,1 km/h " " " " " " " "90 rpm = 41,7 km/h Wheel 26 ...26 x 2.35 (60-559) 80 rpm 48,4 km/h 90 rpm 54,4 km/h you wheel is 20" this is 26 ,10km more speed to 80 rpm https://www.rattanebike.com/products/challenger-2020-pre-order-1...

https://www.haibike.com/es/es/bicicletas-electricas/mtb-electricas/enduro/xduro-nduro-20-es1019?id=4541090042

if that hill is your home you have no choice but a mid-drive and with an 11-40 cassette or more depending on the gradient.

https://m1-spitzing-evolution.de/das-spitzing-evolution/das-spitzing-evolution-r-pedelec/ 920w 120nm 1050 watts battery 75km/h top speed it has no throttle, just your legs

the king 7-year-old ... 18.5 km, the engine is his heart .....¡¡¡you are big!!

Mountain bike climbing specialists lower tire pressure to 1 bar.

Dova Delta tricicle ...

Congratulations you have a speed pedelec that exceeds 45km / h theoretically reaches 70km / h, ¿can you confirm range ranges, how do you use it and if you reach 70km / h? ¿Did you do mountain climbing?

7 años,22kms 7 years old, 22kms

The automatic yamaha mode has 3 levels tour, sport and race, but the expw only by the user. In flyon, most users use Mid mode = turbo / expw = 45km range. Weak points of the Flyon no option to unlocked the speed, 2 to 4 kilos more weight, without option to an automatic mode of selection like...

The automatic mode use eco to hight,expw only user

https://www.ebiketuning.com/shop/yamaha/redped-for-yamaha-pw-x-pw-se-with-displays-a-or-c.html unlocked to Pwx-2 Yamaha pwx vs bosch a 45 km / h you class physic lessons ,no par,newtom,no speed.

change the 3 wheels The size of the rear wheel determines the maximum size of the front wheels.

to have top speed you need revolutions and newtom, the newtom is the ability to move so much weight per meter, comparing to the FIRST MID-DRIVE PW and the new PWX-2 are too many differences, the first one DIES AT 100 RPM WITH 10 NEWTOMS COURSES AND THE PWX-2 AT 100 RPM GIVES ABOUT 70/80 NEWTOM =...

I say this because I see it from the point of unlocking, for yamaha so far it has never failed to have something illegal to unlock speed and I think this would not be the case in the future.

It weighs like a pedelec and I don't change the plate from 46 to 50 or 52 teeth. I would change the rear wheel by a24 / 26 or 28 inches if mechanically it was possible and at first it is more critical the driving because you are higher off the ground. if you increase the diameter to24 / 26 or...

The machine weight?pounds,kilograms