Hi all,
It's a long time since I visited so I should re-introduce myself. My name is Rog and I built my first pedelec in 2006 after I was left in a tree with a broken spine by a hit and run driver. I'm 6' 8" and 15 stone and 250W doesn't get me up hills where I live in Yorkshire.
So I built my own using an american kit with a 450W motor. Which was ok but still struggled on inclines. So I'm thinking of going the Single Vehicle Approval route and building something with a bit more oomph.
Being insured and wearing a helmet is a good plan anyway, with so many numpty drivers about, so having accepted that, I'm realising that there is quite a lot of scope for MORE POWER.
I've been considering the best way to do this. More power means a lot more battery weight, and limited range, so I'm considering a novel solution.
One of the things I really like about pedelecs is that they are QUIET. But one of the things I really hate about pedelecs is BATTERY FAILURE. So here's my plan. I'm here to find out what the flaws are.
1) Get a sturdy bike with biggish tyre sections.
2) Attach my 750W motor to my ebay found worm drive gearbox (from an automatic car wash system)
3) Attach this assembly firmly to the bike frame
3) Run a chain from the gearbox output shaft to the inner chain wheel of the 10 speed bike.
4) Attach a throttle and wire in a hefty controller
5) Mount a 1KW 50cc silent generator on the back rack and run DC to the motor via the controller and throttle.
6) Pour in a pint of petrol and go for a nice long ride
So, feasible, or not? Over to you.
It's a long time since I visited so I should re-introduce myself. My name is Rog and I built my first pedelec in 2006 after I was left in a tree with a broken spine by a hit and run driver. I'm 6' 8" and 15 stone and 250W doesn't get me up hills where I live in Yorkshire.
So I built my own using an american kit with a 450W motor. Which was ok but still struggled on inclines. So I'm thinking of going the Single Vehicle Approval route and building something with a bit more oomph.
Being insured and wearing a helmet is a good plan anyway, with so many numpty drivers about, so having accepted that, I'm realising that there is quite a lot of scope for MORE POWER.
I've been considering the best way to do this. More power means a lot more battery weight, and limited range, so I'm considering a novel solution.
One of the things I really like about pedelecs is that they are QUIET. But one of the things I really hate about pedelecs is BATTERY FAILURE. So here's my plan. I'm here to find out what the flaws are.
1) Get a sturdy bike with biggish tyre sections.
2) Attach my 750W motor to my ebay found worm drive gearbox (from an automatic car wash system)
3) Attach this assembly firmly to the bike frame
3) Run a chain from the gearbox output shaft to the inner chain wheel of the 10 speed bike.
4) Attach a throttle and wire in a hefty controller
5) Mount a 1KW 50cc silent generator on the back rack and run DC to the motor via the controller and throttle.
6) Pour in a pint of petrol and go for a nice long ride
So, feasible, or not? Over to you.