I am very excited to find a message board full of people passionate about electric vehicles. I'm sure you have heard this before, but i just saw "who killed the electric car" the other day and was totally inspired. I am currently working on plans to build a full electric Sport Moped. What i mean by that is a moped (yes the 30 year old things with 50cc 2 stroke engines and pedals) retrofitted with a powerful electric engine that will allow a cruising speed of 45mph.
I have LOTS of experience building sport mopeds, big bore kits, expansion chamber exhausts, larger carbs, racing transmissions etc etc. And I'm the bad guy with a gigantic plume of blue smoke coming out the back of my super loud super fast little bike. I have long taken advantage of moped laws that make it so you don't need to pass emissions and have done my fair share of polluting as i used to drive a jeep.
I would like to start making up for that and hopefully push lots of my friends in the right direction as i do it. I belong to a large community called mopedarmy.com there are branches all over America full of your 30's and 20 something kids who take these old bikes and make them push as many HP as possible before they break. We spend wayyyy too much money buying rare engines from Europe, India, Africa, south America whatever we can get our hands on. I was in the middle of designing my next new project, 3 speed hand shift puch magnum totally custom when i saw this movie. Now i am convinced that i need to make an electric bike instead.
My biggest issue is power. If i want to impress my friends and convince them to do what im about to attempt i have to show them its worth it. That means the project has to cost less than 1000$ and be able to produce a bike that can do 40+ for a decent range per charge. Now i personally am ok with spending around 1500$ and getting a bike that will go a little faster or longer. This could be totally awesome. One of the reasons we like mopeds so much is how cheap gas is for us. This is even cheaper and parts wont constantly be breaking, we wont need to pay for racing oils, gaskets, bearings, etc etc.
You could be looking at some new blood in the EV fan club. So wish me luck and please offer any tips you have.
Here is a cheap quick mock up of what i want to build. I am assuming that i will have to use heavy SLA batteries so i currently am thinking i will have to mount the motor on the rear of the seat. If i put any of the battery weight up top this bike is going to be very unstable. It is a very light frame and a complete moped with motor still weighs less than 150lbs. I don't know anything about electrics except what i have learned with mopeds, you know points, condensers, coils, magnetos, grounds the easy stuff. So i will be starting fresh but I'm a quick learner.
I am thinking that i would be using the ETEK DC motor at 36v. That would mean 3 big 12v SLA batteries right? Could i use 6 smaller SLA batteries and be able to disperse the weight more evenly? or would that not be cost effective? Are there any semi affordable batteries like the NiHm that i saw in that movie? whats cutting edge that doesnt cost thousands of dollars?
My main question is where should i look for resources on the build? I have seen that guy with the El Ninja, El Diablo and El Cheeta. Are his books really worth buying? or are there good step by step guides on the internet for a newbie like me?
anyway here is a pic of the setup I'm thinking about, don't worry i would build a chain guard =)
and here are some of the builds i have done in the past. you can see my general theme and style is the new vintage cafe racer look.
1979 monza 4sl 50cc 4speed (the only one in america)
1977 monza 6sl 65cc 2 speed auto (the only one in america)
1977 Puch pinto/murray/magnum/freespirit mutt 65cc 1 speed
1982 Puch Tri Rad 2 speed auto 50cc custom trike