bzhwindtalker's roadster

[torker]

hehe I can see it doing tight donuts with smoke rolling off the back already

[TPA]

It looks like some slight modifications will be necessary if you wish to cover the frame. Your knees and feet extend beyond the boundaries of the frame when you pedal. Looks like a lot of fun though. Makes me wish I had time to build.

[bzhwindtalker]

Yup, but in the vids, the cranks are 180mm road bike cranks, and I plan 165 or so, so it should be OK.
Today I tested another alternator, works better than the first one, but produce a lot of heat at 1000w. Either alternators are no good for ebike apps, or they don't spin fast enough in my trike with 11 to 56 gearing and 1.7m perimeter wheel.
so next step is to get a powerful hubbie I can get a big hub like John in CR's for 320$ delivered, with controller, throttle, DC/DC... My budget allow it but with little money spare!

Adam

[bzhwindtalker]

Tested it some more, with another alternator (delta-driven) I got 35kph max and 15wh/km with heavy pedaling on flat, so it does not meet my expectations. I reworked a but the steering and lowered the frame, now i have really good visibility! I think I will also reduce by a good margin the wheels camber, as it adds too much rolling resistance. I just hope it will handle 30kph sharp U-turns like before!
I also ordered a motor. Sorry all, but it's a hub! It's a BPM speed rated 500w, 4kg, 180$ delivered on bmsbattery!

[AussieJester]

Sorry all, but it's a hub! It's a BPM speed rated 500w, 4kg, 180$ delivered on bmsbattery!

*unsunscribed* Just kidding matey... Did you not get any ride video for us?

KiM

[bzhwindtalker]

Maybe I'll ride it a bit today with the altermotor, i'll try to take a vid!
I need to fit front brakes! I want to drift!
Not much infos on this motor on the forum, but it seems that it has 2x wider gears than the MAC motors, produce really good torque, but is slower. So I will just pump up the voltage I'm thinking 72v 8ah that would be 240$ in cells (delivered) in 3c li-mn .
Would need to upgrade my controller also, 63v caps inside...

[bzhwindtalker]

hello all, it's been a long time since last update, and unfortunately I did not make much progression!
A good thing is that now I have some cash to spend on builds, I follow a partnership learning curse in mechanical engineering, and one month out of two I'm employee of Thales underwater systems, we work on winches for the usa navy choppers. This earns me 550€ per month and 50% of that will be dedicated to the build.
The bad is that I don't have holidays, and the new house doesn't have a garage yet...I only have free time during weekends, and the workshop is open when I'm at work


Now for the build : I just received a cohnchimotor (or whatever) 750w hubie kit, that I planed to use on a full susp bmx, but I forgot the idea when I grabbed the thing, witch is really really heavy. So I think this motor is going to be used on the trike
I still need to make the body panels, thinking of using good quality coroplast, fast, cheap, will look OK. Next would be fitting disc calipers for the front wheels.

I need a workshop !


Adam

[bzhwindtalker]

that's the plan :

the plan.jpg (45.3 KiB) Viewed 624 times

[gtadmin]

... and a good plan it is. Driven on the left side I take it?

Cheers,
GT