A little bit about my 2008 YZ250F Electric Conversion


Dain_SSE

Member
Location
Cedar Falls, IA
Wanted to check in here! I'm almost finished with a design for a reduction gearbox that will bolt up to the ME1304 (and all other motors that are like this one...). With a 2:1 reduction ahead of the drive sprocket the motor can produce the same amount of torque with half the amperage, this is key to getting in/out of corners without generating tons of heat. The frames of the modern bikes just cannot accommodate a direct drive motor without sacrificing slider wear and having a massive single reduction. Here is a quick snapshot, I don't have the cover piece designed yet - will likely finish that up this evening! This reducer/motor mount could very well be SSE's first product I would be comfortable offering for sale! It is tight, but it all fits on the current YZ450F frame (not shown is connecting weldment/bushing to swingarm pivot). SSE450AReduction.jpg
 

VINSANITY

Well-known member
Location
Texas
That is very well done.

Sort of like the Alta gearing arrangement but much more compact.

it would be awesome to have a universal version where the final bolt points could be drilled for different frames.

what are you thinking it will sell for.
 

Dain_SSE

Member
Location
Cedar Falls, IA
That is very well done.

Sort of like the Alta gearing arrangement but much more compact.

it would be awesome to have a universal version where the final bolt points could be drilled for different frames.

what are you thinking it will sell for.
I haven't thought that far into it yet to put a price on it... I think a somewhat universal version would be pretty easy to do!
 

DonCox

Well-known member
I haven't thought that far into it yet to put a price on it... I think a somewhat universal version would be pretty easy to do!
Here are some pictures of the gear reduction on the QS138 70H V3. Just for information. I am thinking of using this motor for a Husqvarna 65 conversion. It looks very robust for 15KW power. The ME1304 has some major torque.( I rode my buddies ECRF last weekend with ME1304 and it felt good with ASI BAC8000, but not Alta mod3 power yet) I like the bearings on both side of both gears. The web site these pics came from show the technology of the rotor in the QS motor compared to Tesla rotor. (Converting Off-Road Motorcycles to Electric with a QS motor)

QS138 70H V3_a.jpg

QS138 70H V3_b.jpg

QS138 70H V3_c.jpg

QS138 70H V3_d.jpg
 

Dain_SSE

Member
Location
Cedar Falls, IA
Lucky there aren't any porn sites on my open tab bar... but you can see were I've been.
I do see "Kelly 8080I..." to me that's significantly more embarassing than any pron hehe. I think QS has taken a step in the right direction with the reduction but the continuous power still makes it useless for us who ride 450cc and want that power. The ME1304 is pretty tame on torque in my opinion hence the need for lots of reduction. Continuous power is good on it though!
 

DonCox

Well-known member
I do see "Kelly 8080I..." to me that's significantly more embarassing than any pron hehe. I think QS has taken a step in the right direction with the reduction but the continuous power still makes it useless for us who ride 450cc and want that power. The ME1304 is pretty tame on torque in my opinion hence the need for lots of reduction. Continuous power is good on it though!
Yea, I am thru with the Kelly. I am tired of it. It is history. My buddies ECRF felt so much better than my Kelly. About the same power, but smooth delivery and NO cutouts. I cannot live with that.
Did you look at that article, the inerts of the QS motor look real promising. Maybe we can convince them to build a larger one with the gear reduction. Tesla rotor/motor design looks like the way to go. I think the Hawk motors have that technology in them.
 

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