3000w Mongoose girder

[Voltron]

Niiice.
It's amazing how these days you can whack together some parts and have something so much more fun, quiet, better handling and more neighborhood friendly than any pitbike or Grom type moto.

 

[Barncat]

:thumb: . It's the silence that makes e-stuff acceptable, though a hub motor would be quieter than the chain drive. 25% of the bikes going by are ebikes these days though they're still generally pedaling. I've decided to stay off the busier bike paths rather than offend people, though I slow way down to courteously pass. Then whack the throttle to 40

I'm all for a good workout btw. Decades of cycling now prevent me from sitting on a conventional bike seat, so Rollerblades and my custom 9lb aluminum plywood carbon kick scooter fit the bill.

 

[99t4]

Interesting scooter. Do you miss not having a "fender brake?" Where are the tires/wheels from?

 

[Barncat]

I did veer off topic by posting the scooter pics... I have a design on the drawing board for an offroad e-version with suspension forks, but that's on the back burner for now. The prospect of a battery fire (however remote) in a forest environment scares me.

The 12" alloy wheels are pretty good quality and available on ebay for kids balance bikes. As I recall the tires are Bontrager brand, or Schwalbe makes high pressure 12" also. They must be over inflated to minimize rolling resistance. You could use larger wheels but then it's a kickbike.

A caliper brake could be added but I find the Flintstone shoe brake method satisfying on the flat to rolling terrain here. Not suitable for steep hills. And keep your heel away from the back tire...

 

[Barncat]

I've been experimenting with the bike over the last month. Have around 2000 miles on it in total. Thought I'd see if using a small Flipsky 75100 controller was an upgrade. Not so much as it turns out, a lateral move at best with pros and cons... that story is on page 13 of the 75100 thread in the motors section. Bike is lighter and way less cluttered with the small controller at least but I may go back to original setup.

I made another Hornet bmx freewheel adapted to an 80T sprocket. That's described in the bike mechanical and structural section. Faster engagement and better quality including more consistent chain tension.