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always when i go cycling with my girlfriend, she gets the e-bike and i take some motor-less bike.. so its more fair ;) the ebike runs up to 40km/h which makes it hard to me, to keep up.. however: driving in the slipstream of my girlfriend which goes in front makes it possible to get some...

is there a controller you can say its a high-end thing... i mean, not that 30Euro controllers, i would be willing to pay 100-150Euros, if it has some features: 1.) adjustable under-voltage-protection 2.) adjustable max-current 3.) usable from ~20Volt up to ~50Volt what i mean is, that...

when I first came here to the forum, I thought i need a bike, were the motor can use the gears.. Point 1: everywhere you heard, that Hubmotors do not run efficient at hills, and are not at all suitable for going up hills well.. part of that is right, but as flecc wrote in his article: we are...

well.. iam so pleased with my Bafang, running on 43Volt iam meanwhile considering building a second bike with electric motor criterias like * free wheel * light weight is fullfilled with bout, the bafang and the nano the nano is even lighter and maybe more quiet the question...

how efficienct are they ? for example: going with 15km/h does need less energy for same distance than going with 25km/h because of the airdrag.. so: let say at 25km/h controller runs "full throttle" at 15km/h is has to reduce throttle (and for that you hear it "iiiiiiihhhhh") will...

what kind of cheap Fepo4-cells are there ? i use A123 Fepo4 2300mah-cells and love them very much... are there (i heard so) bigger Fepo4-cells.. cheaper (and for that with less power-rating) but also long-lasting (high cycle-counts, high calender-life) thx..

its looking like a normal bicycle, but the rack on the rear sie is a lot longer, the bike is longer so on the rack 1-2 childs can sit there.. the bike is very robust for heavy loads and there is a electric version.. i thought the name was "stokemonkey" but i don´t find anything about...

first problem: motor is ~11,5cm wide, the steel fork only 10cm that does not seem much, but man: try to bend it apard and insert the wheel with only 2 hands.. impossible tried it with the help of my girlfriend -> impossible as well (with the wheel inside, iam not strong enough to bend the fork...

hi.. again (after the sparc :rolleyes: ... which still does not run in a bike sofar because one part is missing :mad: ) i have bought an conversion set from ebay.. this time i paid a little bit more (~200 Euro inkl. shipping) for a complete set (except the batteries, will use LiFepo i have...

how does it ? here a video not showing it excactly but nevertheless of some kind: YouTube - Eje electrico . 2 Hub motor working as geneartor and motor.

what a cool thing !! GRUBER ASSIST don´t miss the videos with explanation on the webpage ! here how it works: YouTube - Gruber Assist 2 English YouTube - Gruber Assist 1 English YouTube - Gruber Assist 3 English some would maybe say: "pah.. only 200Watt? not worth at all" i...

here the link i found in another velo-forum: BikeTec - Europa Tour Project bike will be a Flyer from flyer.ch interesting values: the flyer will need about the same amout of energy for 100km like showering for 3min... for the whole distance of over 10.000km there will be electricity of around...

when going through my files i found this messurment i made last year with my datalogger (loggs 10 samples/second) just want to share without any purpose i just had 1 nimh and 1 lipo with me, so i used both, looged so i can compare.. i used: LIPO a 2 year old Lithium Polymere batterie...

well.. this as an onroad-version (should come this year) would be a great inner-city-bike i think.. 4sec to go from 0-30mph topspeed at 40mph for the update: the 16.8Ah 48Volt battery is now replaced by an LiIon 50Ah and 60Volt battery has anybody driven a Blade sofar in...

i have the opportunity to maybe get a used sram sparc for few money.. question: how does it work ? it is said to have 2 motors with belt-drive inside the internal gear hub.. what motors ? brushed or brushless ? how are they rated.. i have read, that it is not a strong drive-train, more on the...

hmm... i like it from concept. looks very rugged also mounting on a road-bike is possible assistance up to 55km/h possible hmm... considering a light moutainbike with 9-10kg the motor/gear-unit including mouting material: 2,5kg the controller-unit + handels: 1kg the batteries (Lipo...

i found once a link to a electro-bike (very expensive) it was powered by NiMh, batts included into the frame it was red ;) power: i think 3 versions, 250Watt, 400Watt and 600Watt it had no hub-motor and for an untrained person not noticable, that it was an e-bike.. i can´t finde...