Search found 9 matches

by Kevprojex
Apr 22 2015 1:29pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

Ok I've got it bigger is better :D , I am guessing I need to fit a volt meter to keep an eye on the batteries so not do drain them down too far being lipo cells.
by Kevprojex
Apr 22 2015 10:39am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

When choosing a RC Lipo batterys to make my pack is it better to choose ones with a higher C rating or a higher mah.
by Kevprojex
Apr 18 2015 5:35pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

Thanks guys this is all a learning curve for me as electrics are not my strongest subject, when I built the bike I used a basic motor and minimal wiring to get the bike working as it was simple enough for me to understand, The 4QD controller was simple to set up as it didn't need a computer to progr...
by Kevprojex
Apr 17 2015 2:03pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

I couldn't tell you the answer to that one xtruder sorry, this is my first electric build, and coming from building motorcycles I just went with a design that looked ok to me, the customers that comes into my unit think it is a little strange looking though.
by Kevprojex
Apr 17 2015 1:56pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

Thanks for the info knoxie, I did look at that lipo oset battery pack after I had made the battery boxes so just decided to run with the spa batteries to see what it was like. After my test last night I found the top speed to be useless as it was way too fast for the trails by my house and I was onl...
by Kevprojex
Apr 16 2015 4:04pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

Hi riba, to try and avoid unwanted attention I was trying to make it look as close to a mountain bike as possible.
by Kevprojex
Apr 16 2015 3:43pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

Some more pictures. http://i1380.photobucket.com/albums/ah192/kevprojex/derbi%20senda%2050cc%20electric%20convrsion/electric%20bike%20project%2069_zpsqg6ohmsl.jpg http://i1380.photobucket.com/albums/ah192/kevprojex/derbi%20senda%2050cc%20electric%20convrsion/electric%20bike%20project%2059_zpsfoybqhl...
by Kevprojex
Apr 16 2015 3:22pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Re: Derbi senda 50cc electric conversion

Thanks for the reply's guys. The 4QD controller works really well with the domino twist grip throttle, I was very surprised by the control at slow speeds and the responsiveness. been out tonight for a proper test off-road, it has enough power to start with then batteries voltage drops like a brick a...
by Kevprojex
Apr 16 2015 7:42am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Derbi senda 50cc electric conversion
Replies: 32
Views: 16157

Derbi senda 50cc electric conversion

Just thought I would share my first E bike build. alloy frame derbi senda 50cc main frame,forks wheels and swingarm, wheels were re spoked onto 19" x 1.6 rims motenergy me0909 motor running 48v 4kw constant with 15kw peak 4QD 300a 48v dc motor controller 4x 12v 17ah sla batteries 12T front sprocket ...