NEM0 - <$1k Electric Dual Sport

[captainslug]

I tore the electricals apart today and will be making one last attempt at getting this bike working. I've ordered a replacement DC converter which should be more robust than the other much cheaper ones I seem to be killing.

[Jay64]

Good luck at getting it working. If you still decide you want to sell, hit me up on email again.

[dangerzone]

I tore the electricals apart today and will be making one last attempt at getting this bike working. I've ordered a replacement DC converter which should be more robust than the other much cheaper ones I seem to be killing.

There is an electric motor that might be best for your frame, it is a 12kW outrunner with hall sensors and optional water cooling which does not cost much, the Colossus.

viewtopic.php?f=30&t=16728&start=345

This motor is only 5kg heavy so you could put it on top of the rear fork instead of inside the bike frame. That would also mean less chain and no need for chain tensioners.
Yet those batteries would be a bit underpowered but it is worth a try, the performance would definitely be comparable to a 125cc dirt bike.

[captainslug]

I haven't had much free time to devote to this project lately. The replacement DC Converter DID arrive though.
I'm getting married in 2 weeks and my Tuesday and Thursday nights are taken up by the TIG welding class I'm taking all summer.

[captainslug]

I've made some progress on installing the replacement DC Converter. And while doing so I've updated the wiring diagram.

[grandmasterE]

Is this project dead? Too bad if it is.

E

[HumboldtRc]

I'm getting married in 2 weeks

That says it all.....

Edit: Weird coincidence both being at 59 posts...

[teddillard]

I just want to say... this has been the most inspiring thread I've read on a build in years. Great job, and I'm sure you'll get back to it in good time.

Thanks!

[captainslug]

Is this project dead? Too bad if it is.

E

Basically Yes.
I have no free time or money to put towards this seeing as I am currently working towards saving up money to buy a home.
I would both love and hate to work on this because I just can't afford to run into any further issues that would require that I invest more money to finish it. It's also looking like I will probably be moving to an area where I would no longer be able to really use this bike to get around town or to/from work.

I'm also just very tempted to replace the electric drive train with a small diesel engine.

[Gordo]

Is this project dead? Too bad if it is.

E

Basically Yes.
I have no free time or money to put towards this seeing as I am currently working towards saving up money to buy a home.
I would both love and hate to work on this because I just can't afford to run into any further issues that would require that I invest more money to finish it. It's also looking like I will probably be moving to an area where I would no longer be able to really use this bike to get around town or to/from work.

I'm also just very tempted to replace the electric drive train with a small diesel engine.

Beautiful build and I'm sure the education you gained is worth every penny you spent. There is nothing cheap about building an e-bike. When you try a motorcycle type build, you need $1200-$1500 for batteries and then another $2000 for the rest.
When you are young you have to set your priorities to meet your families needs. Work hard and smart and hope you get to a happy place soon where you can go back to building toys.
Thanks for taking the time to document your build. It was a most enjoyable read.

[vanilla ice]

replace the electric drive train with a small diesel engine.

DO IT!

[captainslug]

The post-mortem on this project is that the controller is dead. I've completely torn down the bike and basically am giving up on the electric drive system. If anyone local to Northern Virginia has a use for 5 good condition 12v 20ah batteries for cheap, let me know.

[kikiam]

Your project very cool. Just want to tell you. Sory for my weak english.