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Figured it out! It was a simple issue, just confusing initially. I got a new Mastermind TCU on warranty before doing the swap, and it was programmed to the slower 10 mph cutoff. Also the display was set to kmh vs mph. The combination of the larger 29" wheel + Speedi resulted in almost a...

I have a puzzling question for everyone. I have done the motor swap between SL 1.1 to 1.2 on my 2020 Gen 1 Levo SL. Have swapped motor, battery, and TCU between bikes. Everything works fine but I'm seeing some strange behavior from the 1.2 Mastermind TCU. Specifically the speed cutoff is...

For the couple questions above: Yes, when using the kids motor (15 mph restricted) with a 29" wheel the actual speed cutoff will be about 17.5 mph. It's personal preference but I was hitting the limiter constantly on my local trail so I added the speedi. Motor guards: no, these do not just...

I had planned to get my son the kids SL anyways so swapping motors was just an added perk. I personally would not do it unless I was keeping the kids bike. The kids Levo SL has a lower speed cutoff than the adult TCU. The kids TCU can be setup by a Specialized dealer for either 10 or 15 MPH...

I completed this swap last month. I had the same questions as you and didn't find any clear answers so hopefully this helps. I did the swap on my 2021 Gen 1 Alloy Levo SL. Keep the hardware with the bike, not the motors, at least for the alloy frame there was unique hardware that stays with...

Thank you for checking, that is exactly the details I needed. The 3mm difference between MTB and road crank scallop is not enough for what I want. Guess I will bite the bullet and machine the ends off, mill a pocket, and weld in a puck at 135mm. Was hoping for an easier solution but don't...

G-sport. Yes if have the chance to measure your road cranks I would really appreciate it. The MTB cranks are 142mm from spline center to end of the scallop. Really hoping the road cranks have a shorter scallop.

I would be comfortable putting 1/3 of the hole into the scallop. The crank arm on the SL kids are that way, specialized made them as short as possible without changing the forging. If I can get 5mm shorter with road vs MTB cranks that's worth it to me. Looks like i can shorten my current...

G-sport, Would you be willing to measure the length between the crank center and the end of the scallop on the backside of the arms? Wonder if the road vs the mountain arms are different. Based on the pictures it looks like the road arms theoretically could be made shorter, but that might...

Its interesting that Sram is not even using the Dub interface on the new powertrain motors. Looks like the SL1.2 is going to be truly unique to Specialized.

Thanks for the options. Most of these are outside the budget I'm willing to spend on my son's bike. I would love 5dev cranks but can't justify $400 cranks on my 7 year olds bike. And I would be sick putting said cranks into the mill to modify them down to 140mm. It's a little frustrating that...

Great work G-sport! I'm going to do the same thing for a set of cranks for my son's SL. What PN did you use, they are from specialized I'm guessing? Direct from praxis only has 170mm option. And how short do you think is possible? Ideally I would get 130mm cranks for my son but nothing exists...

Reviving a previous thread to ask some basic questions about SL 1.1 to SL 1.2 motor swap. I have looked through all the threads I could find and have not seen these details. In a very round about way I end up with a Levo SL Kids for my 7 year old. I have a gen 1 alloy SL and thinking about...