Belt driven off road bike (Giant Reign)

[1000w]

I have basically finished the battery box now, other than covering it with the carbon fibre vinyl which should be in the post.
The box appears fairly large however it all feels fine between my legs, not too wide.

[AussieJester]

When the CF is on she will look the business...really looking forward to seeing her rip, turn the juice up on that 24Fet and the EV grin well be HUUUUUGE.... LOL

KiM

[1000w]

I have now got this bike running, well thrown together, so I can test the belt drive and idler pulleys.
The original set up with an idler on both sides of the belt proved to be no good. I couldn't get the belt to track correctly and stay on the drive pulley so the tension side(top) pulley had to go.
So I had this.

And now I have this.


This involved some more modification to the top chain stay so I could get a straight belt line.
Some material removal.


And some material addition, this is some 6mm plate shaped to fit inside the chain stay.


Plate inside the chain stay.


This is welded in and partly ground smooth, still a little rough here.


I decide to add some material to the outside as well, this is 4mm plate bent 90 deg and shaped.



Then welded up.


Now I have a straight belt line.


This is how it all looks in testing mode.


Now how does a Cyclone 3000watt motor go on 66volts and 100amps?
Unbelievable! This thing is a monster at 6500watts. The front wheel was lifting just with throttle ie with no help from me pulling back.
Loads of torque, it doesn't seem to slow down on hills and the speed is right where I calculated, 50kmh or just over, I'll put a speedo on soon.
I have only ridden it for about 10min tonight so I still have some small things to sort out, but it gave me a sizeable EV grin.
Cheers,

[grindz145]

Sick! Nice job!

Where do you source your belt-drive components? (minus the custom giant sprocket

[1000w]

Sick! Nice job!

Where do you source your belt-drive components? (minus the custom giant sprocket

From here: https://sdp-si.com/eStore/
Cheers,

[grindz145]

Sweet thanks!

[boostjuice]

Now how does a Cyclone 3000watt motor go on 66volts and 100amps?
Unbelievable! This thing is a monster at 6500watts. The front wheel was lifting just with throttle ie with no help from me pulling back.
Loads of torque, it doesn't seem to slow down on hills and the speed is right where I calculated, 50kmh or just over, I'll put a speedo on soon.
I have only ridden it for about 10min tonight so I still have some small things to sort out, but it gave me a sizeable EV grin.
Cheers,

This is all very exciting! Im curious to know the saturation point for these motors (and whether or not you've surpassed it), as well as what sort of power bursts you find the motor can handle repetitively though a full battery's worth of technical trail riding (safe thermal equilibrium point)


BTW, Nicely resolved dropout clearance issue... alu welding certainly opens up possibilities. should be more efficient too. Beaut job!

[bzhwindtalker]

I like this bike!
This motor sure looks interesting, plenty of power to boot and rugged build. Testing it to destruction for us?

I see you did a motorcycle type brake levers setup, should be standard on all wheelie prone bikes

[Tommy L]

Sweeeeeeeeet!

Tommy L sends......

[waynebergman]

Can you tell me please where you got the wheels and tires? ......they look real nice!
Are they intended for trials?
How much for the rims and tires do you remember?

Thanks Wayne

[1000w]

Hey Wayne,
Here you go.
This is the rims.
http://www.chainreactioncycles.com/Mode ... elID=46923
These are the tyres, I have the 2.25 width.
http://www.chainreactioncycles.com/Mode ... delID=9411
Cheers,
Matt.

[jonescg]

Any updates Matt? I see there was a good 9 months or so between posts

[1000w]

This one is on the back burner as I used the battery from this one for the cargo bike.