ME1115 or Qs138 70h/ 90h

khazimodo

1 µW
Joined
Sep 14, 2019
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Hello everybody

So I have been planning an e motorcycle build for quite a while.
My dilemma: I am split between an ME1115 or a QS138 70h/90h

I have heard great things about the MotEnergy ME1115 but have found its shape to be slightly awkward (possible to work with but not ideal for a motorcycle frame). Along with this I have heard ME1115 only works with Sevcon controllers, is this true?

The QS138 70h/90h mid motor although longer seems to be much better alternative for packaging. I have also heard it is possible to get up to 25/30 kw from these motors at peak, is this true?
Can you run a QS138 using a Kelly or Sevcon controller?

At the moment i'm still set on the ME1115 despites it's awkward geo but the QS138 70h/90h is an intrguing wildcard!

Looking forward to hearing everyones thoughts!
 
I’ve used the 138 70h a lot, it’s a great motor. Works well with both the votol em150 and the apt96600 so i guess you could use it with other controllers as well. If i’d do a build today i would choose the 138 90h with a nanjing far driver controller at 24s 1000A phase current.

The 90H should be able to take about 30kW input - i’ve used my 70H at 300A (battery) @72V. I don’t know what the efficiency is at max input level but with 80% you’d still have 24kW available at the wheel.
 
That is a tough queston.

ME is a famed motor.. That is the one I would want of all the ME motors. ....


...but so is the 90H. The 90H is quite a heavy solid construction, and can peak much higher I hear ( just study, no experience).
 
I had to check, motors are not so different going by the specs, Me1115 84Nm torque in below dyno run vs 72Nm as speced for the 90H. I wonder if the QS motor torque also could be even higher with more feed, QS are known for their conservative specs.

Dyno run of the Me1115 here:
[youtube]wdhi1MH0oTg[/youtube]
Me1115 15.4kg vs 90H 13.3kg
Price is the obvious difference, and the inconvenient shape of the Me1115 motor.

For the same money it seems you could do a double 138 90h build if you've got the battery and controller to feed it. That build would be fun to see here! :wink:
 
Im building a Honda 2010 crf450 based bike atm that will run the 138 70h on 20s and planing on 450dc bursts as a trail play bike.I think for the money you cant beat the 70h and the ease with its reduction.Honestly think building electric converted bikes these days have never been so easy.
 
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