QS 3000w midmotor

[Ianhill]

Looks like the 90h comes with water cooling very little in size difference makes its perfect choice for a karter.

H3d029d0045db4353a4bb23b1286c700bF.jpg (347.96 KiB) Viewed 559 times

[john61ct]

Looks like a great choice for my 500+lb cargo bike in long steep mountain road country.

Compared to the Lightning Rods XXL??

The radiator cooling factor really opens up torque possibilities when top speed is not a goal.

[john61ct]

I do wish QS used unique model numbers, so hard to track what's what when Watt capacity is so nebulous a factor

[SlowCo]

Looks like a great choice for my 500+lb cargo bike in long steep mountain road country.

Wow, that's a heavy rig. Any photos you can post of that bike build?

[Ianhill]

Cargo bike, damn that motor could push a desert bike about upto 60 mph or so and have a pop at a small trailer on the back.

Problem with such a bike is the sprockets gearing a bike wheel down to slow speed high torque for a efficent ride aint no easy task, where as a gokart wheel is easy as its so small.

Someone needs to make a stand up scooter with one these beasts even the 70h be evil on a 6.5inch rim

[john61ct]

Any photos you can post of that bike build?

Nope all so far just ideas in my head.

[john61ct]

Cargo bike, damn that motor could push a desert bike about upto 60 mph or so and have a pop at a small trailer on the back.

Problem with such a bike is the sprockets gearing a bike wheel down to slow speed high torque for a efficent ride aint no easy task, where as a gokart wheel is easy as its so small.

As mentioned I want low speed high torque only, maybe 22-26mph max.

Even slower bumping along the desert or forest trails with 500lbs

which is why little wheels are NG hitting logs and ditches.

I figure equivalent OD to a 24-26" bike wheel, would love a bouncy fattie, but needs to be very puncture resistant

[SlowCo]

Nope all so far just ideas in my head.

I figured as much...
Probably will never happen.

[john61ct]

Maybe, but knowledge is necessary even if not sufficient.

Personal and family obligations are the limiting factors currently, but won't be there forever.

[Jrbe]

Is anyone using these motors with belts? I haven't found what belt spec they're using.

Are rear sprockets available for reasonable prices?

[PITMIX]

8M20 SUPERTORQUE

[Jrbe]

8M20 SUPERTORQUE

Thanks pitmix!

[tomjasz]

I figured as much...
Probably will never happen.

[Quinc]

I do wish QS used unique model numbers, so hard to track what's what when Watt capacity is so nebulous a factor

Wish they used a normal sized motor sprockets instead of these one off sprockets that only fit qs motors..

[Ianhill]

Im trying to confirm the bore of the water cooled sprocket now i think its 3/4 bore with a 3/16th key but unsure, i thought the 138 70h was a 17mm but it turned out to be 20mm.

[tostino]

Where is the best place to source these from? Been a while since I was in the market, and the shipping is just insane. Is there any US domestic stock of them?

[Quinc]

Where is the best place to source these from? Been a while since I was in the market, and the shipping is just insane. Is there any US domestic stock of them?

Only place stateside I know of. https://www.electroandcompany.com/motors-kit