Recent content by ecstatic_subjectivity

Yeah I have a feeling it's functionally just adjustment to spindown / spin up time, and I doubt it will perform well in either of the situations you describe. No clutch, it's a single speed, so a splat style clutch dumb is totally out. But we'll see when it shows up! Hahaha yes, the issue is...

I'll have a Stark around soon (going to a friend) and I'm curious to see how their "virtual flywheel" concept works out in application. I have noticed that this is one of the hard things about the EM - the flywheel spins up FAST and it is hard to modulate. It also spins down very fast, we'll...

I think there's something interesting here about both flywheel and clutch design that I haven't seen made explicit, that is pretty unique to what trials demands. You have two controls (throttle and clutch) that are used to interact with the RPM state and the rate of change of the RPM of the...

Alright, well, wasn't super happy with how the old project was going, so did some work and got the EM ePure Race motor in the 300, at least enough to pop around the yard a bit: Things remaining to do are: Weld on lower rear motor mounts Get the lower mounts done in aluminum Design some armor...

If you'd like to see the E-moto in (very light) action: Conan Dooley on Instagram: "First ride on the E-moto, need to finish up armoring, battery mount, and get all the plastics and such on it. Chain might have stretched enough to fit the qs 138, will just have to see. So much mechanical noise!"...

Drive chain showed up today, and I did a quick spin on it. The electric motor configuration is too soft off the bottom when you have a clutch, it doesn't feel very responsive. Also probably want to turn down the regen. It needs the bigger motor for sure, although aggressive clutch use works okay...

I've got a fully enclosed chainrun with delrin sliders now - swapped the QS120 on, remade motor mounts. Might need to go to a 520 instead of the 428 that it came with. That'd also open up some other options for gearing. I can adapt the delrin setup to have a spring loaded tensioner on it...

If I were to swap the QS120 in with an EM-100 controller, how high could I reasonably turn up the controller Busbar current without worrying about frying the controller / motor? My use case is different from most, cause I have a clutch, so I'll tend to slip the clutch at lower RPM to bring motor...

I got the cases sealed up, and the upper motor mount fabbed up: Following that, I discovered something pretty disappointing - the placement of the electric motor + crank sprocket is such that I'm perfectly between the link sizes on the chain. Need a half link in 428, because I welded on the...

Things slowed down a bit, but still making forward progress. I did temporarily get the motor running just to make sure everything works, so a short clip of that is available on my Instagram if you'd like to see it. This build is a bit more slapped together / rough, but I'm not entirely sure the...

Managed to make some good progress after work today! Split the cases: This Motion Pro crankcase splitter is very expensive but also a wonderful forever tool. No conrods allowed: If you don't want to retrue the crank, just angle grinder the conrod off. Welded the crank up, as a 2 stroke...

Thanks, it's really nice to hear the support for a different approach! I'm not broadly concerned about gearing. The QS138 does about 4k RPM without flux weakening, and up to 6.5k or so (iirc) with flux weakening, and the rev range the 2 stroke uses is about 2-5k under normal usage, so it should...

Thank you! No time to work on it tonight, but tomorrow I'll hopefully have some time to split the cases and do the welding needed.

Thought this forum might appreciate my build. I've got KTM dirtbike that I'm converting to electric, retaining the clutch, transmission, and original crank. I've been through a few iterations in different frames, but the right call here ended up being my 2011 KTM 300 XC. Today I finally had the...

DanGT86, a modern multiplate clutch in a supersport will easily take ~200+hp for tens of thousands of miles, including aggressive launches and the like - wet bath multiplate clutches on modern motorcycles are pretty absurd in terms of the abuse they'll take. MotoGP bikes only have a single...