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I'll be very surprised if you're able to fit 510 cells in that frame. Its just so hard to efficiently layout a pack on these conversions as these frames were just not designed with that in mind. At least not without separating the pack up and having to run a smaller one in the airbox area, which...

Thank you sir!! It seems the QS120 motor is very close in dimensions to the Alta motor. It’s also an IPM vs SPM motor which may provide help in getting closer to those power levels. I still think I’ll need much higher voltages to get there.

To explain why I am interested, I have a QS120 70H motor that I am debating on making a water cooled jacket for. Just trying to compare the physical size of it to the Alta motor and how close it could potentially compare in regards to power density. It is roughly the same size at 8.8kgs, 120mm...

The 175mm length, is that the o-ring to o-ring length, overall length, etc..? Thanks for the info!

I understand, its hard to find enough time in the day to get everything done that needs to be done, let alone everything we want to get done. I assume thats 8kgs? Can you measure and share the diameter? Also, could you stretch a tape measure or something down the length of the motor and share a...

This is an interesting thread I just re-found if you were not aware of it FYI https://electricdirtriders.com/threads/mx-basket-case-bike-resuscitation.1736/page-3

Curious if anymore progress has been made on this project?

I've seen that, but I assume its just a rendering the seller found online, but it would be amazing if there was a CAD model of it!

510 cells is pretty ambitious to fit in a conversion in my opinion. Alta and Stark are barley fitting that much energy in a frame specifically designed for the application. Also, you're looking at 23kgs (51lbs) of cell weight and the Alta and KTM packs are around 1.4 for pack to cell weight...

Does anyone know the stator diameter, magnet length, rotor configuration (spm, ipm, etc), and weight of the motor for the Alta?

That's my point, these have the best latest and greatest specs, can't find them anywhere, at least as a consumer, and are relatively unproven and even using those specs their capacity and weight for the pack seems a bit over marketed to me. Voltage sag is apparently pretty bad in the 50s at even...

Samsung 50s is the best I currently am aware of. 120wH/lb at 6-7c peaks

I agree, 400 2170 cells seems to add up. 400cells*3.6V*4.0aH=5.76kWh~6kWh Also 400*.15lbs/cell=60lbs of cell weight. Advertised pack weight is 70.4lbs (32kg) including BMS and all typical included battery componentry. So 70.4lbs/60lbs=1.17 for pack weight to cell weight ratio. Alta and KTM are...

Don, thank you for the info! I will reach out and see if Richard can help me out.

I picked up a Sevcon Dragon8 controller off of Ebay for cheap after a nearly full refund. I have the older build of DVT, customer version 12.497, and IXXAT V1.5. However, I am stuck at 0 level login access and cannot figure out how to change it and if it's even possible. I assume there is a...

I've been curious about the FarDriver, interested to see how that turns out, keep us posted please.

I'm curious how you intend on having a pack that has 11% more energy and a bike with over 20% more power, but 6% lighter than an Alta? I've seen far too many attempts at this over the last few years to not be very skeptical of these claims. Maybe you have some tricks up your sleeve and I hope it...

Any updates on this?

Do you know what Alta’s put out electrically? 300v nominal & 350v max, but I’m not sure what amps it’s actually pushing? I’m guessing somewhere around 100 amps?

I’m curious, what’re you seeing efficiency wise from electrical power to rear wheel hp?