New project (no not convertible)

Thanks, but its always easier with a big chunk of metal and the welder cranked right up. Much harder to produce nice welds on thin sheet and low power (to prevent blowing through) :)

Luckily most of the engineering on this project is quite heavy, I've only had the welder off max a couple of times !

Not like trying to stitch two halves of a lengthened front door back together ???
 
HeHeHe !!, just fitted some new brushes to the motor, and dropped it on the lowest gearing 4:1 and did another "run behind with the car battery", now it really moves !!, < 20 yards it just blew me off I couldn't keep up ( my excuse is I was carrying the battery ! ), he recorded a peak speed of 15.2mph it was still accelerating but he bottled it and I ran out of puff, I recon with enough road and slightly taller ratios it'll easily pull 30mph

Time to buy him those leathers and crash helmet... :D Oh and I supose I had better fit some brakes :(




Edited By webmaster on 1158864596
 
Hmmmm, I'm getting the feeling this things is going to be a bit dangerous for use in the street.

I've been working on a variable speed controller for it, which I will be able to adjust to limit the speed, might be a "in the carpark at work" only toy ! Luckily his friend round the corner has a mini-moto which he rides at his aunty's house because she's got a field to play in, maybe best to make him take it over there for a play !
 
Well I finished the speed controller today, and installed it on the trike, PWM controller with enough Mosfets for to handle 240 Amps continuous load. I wired the battery through one of those cut off switches like on a race car (took it from the old convertible), so I could disconnect the power quickly if it all went wrong.

For now I have a small pot to turn for the "throttle".

I set it all up and tested the controller with the trike off the ground, worked perfectly, nice smooth fully variable speed. So I took it outside to test.

I sat on it and gave it a go, nicely started to pull away, very smooth, so I gave it full throttle.
Thats when the flames started ! !, two of the Mosfets burst into flames, it was quite impressive !

Back to the drawing board on the speed controller, I suspect the current requirements for the starter are a lot higher than I thought.

Anyway, I couldn't resist giving it a proper go, so I removed the speed controller and wired it so the power-kill switch acted as a on-off throttle. I rolled it out onto the street, sat on it (it bent considerably under my 17 stone) and turned the key..... Off I went down the street, got up to 15mph before I had to brake (thats remove the power and put my feet down to slow it) and turn round for the return trip.

Its ace ! I was impressed with the torque it had, and it should be a lot more lively with my son on it, he only weighs 1/3 of my weight.

I'll get Joanne to video me riding up and down on it tomorrow, see if I can post it up. :D
 
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