Recent content by E-racer

Not feasible. The ratchet mechanism can only turn the drum one gear at a time so you'd still have to click it multiple times even to skip a gear. I guess you could make a custom shift drum. Not worth it though as the extra ratios are nice to have so it would not make sense to remove them.

Thank you so much spinningmagnets for this amazing article!

I think they try to reduce the cost across the board to help justify the cost of the batteries. I don't think all electric motorcycles need transmissions but I do think that any electric dual sport would greatly benefit from having atleast high and low range.

That would be awesome! I'll DM you my contact info.

This is a DR650 that I converted to electric using: -QS138 90H Motor -ASI BAC8000 from ERT -Kia Soul EV Batteries in 20s 75ah It retains it's factory 5 speed manual transmission and clutch. This is great for quickly selecting the proper gear for the terrain. 9a_2OgRDI4Y For FAQ's about...

NEXT BIKE! This is an early design concept teaser pic. The frame will be possible thanks to Cartesian CNC profiling and bending http://www.cartesiantube.com/ I have not decided on power train yet. I am aiming for 7 kW/hr or more of capacity. Details to come.

Wow! You have been busy. That is not quite what I had thought of. I did not realize at the the top of the suspension the knuckle was higher than the chain (granted chain was pulled tight/straight). Does it work how it is setup now? Ideally you need to constrain the chain to the width of the...

I like that thought as well. The issue is see with it is that you will have to keep two chains tensioned properly.

You dont want the tension side of the chain under the knuckle. The motor will try to pull the suspension up under load. Everytime you hit a large bump the suspension travel will shock back torque through the chain into the motor.

The idler carrier rotates on the same axis as your suspension knukle. The idlers contrain tthe chain to the same width as the motor drive sproket. This allows the swing arm to move up and down without tighteneing or loosening the chain. Essentially this design does the same thing as adding a...

If you build a two idler setup like I posted you wont have to deal with a sprung tensioner.

Good job! Glad you got it running!

why not ditch the rear hydraulic brake and run the chain on the inside? does your controller have regen? NVM just realized that is impossible. Looking great tho good luck getting it finished up! How much controller and what batts!?

Excellent! I will investigate the shock oil thanks! I am expecting a loss in efficiency. I am combating it in two ways. The motor is going to be a 9 turn to reduce it's speed w bit. Secondly I intend on strapping on a bunch more lipo :-D