KX100 Electric Pit Bike

[DonCox]

That breaker might work, I haven't used one. With this high current, I would use the most simply and reliable method. A visible Fuse and a Manual Switch. I recommended the other DC to DC converter (https://www.amazon.com/gp/product/B07GNTC1D7/?tag=sce0f-20) , but you could use the Relay in your kit to power the DC to DC converter, and have the same result. The manual switch also serves as removeable switch ( look at the pictures.)The la.st picture shows the Fuse

 

[LeeRoy]

That is a perfect donor. 2001-2013 is the newer plastics. Do you have the title on the frame. I made the street legal light kit for mine. Yea check with me to see if I am home and come on out here to try the bikes, they are so fun. I don't know how old you are to recognize these 2 guys riding the electrics. They have been around the motorcycle world for a long time. Both world Champions

The second bike is a 2017 KTM I did with the QS motor.
You know of any more KX's like yours? I have an older one, but I need 2 more with papered frames. Actually any one from 1991 to 2013 are the perfect ones to modify. I convert the 1991 to 2000 to newer plastics, using KLX110 tank plastics, since those early ones only had radiator shrouds on the right side.

Can you tell me more about the KLX 110 tank plastics? Do you need the tank and the outer shell with the shrouds or just the outer shell?

 

[DonCox]

Can you tell me more about the KLX 110 tank plastics? Do you need the tank and the outer shell with the shrouds or just the outer shell?

Just the outer shell and do these few mods to it. A little plastic welding...

 

[DonCox]

I have 2 frames KX85 2003, partial roller and a roller. Both frames have been modified to accept the QS138 70H V3 motor and the EM150 controller.
1.)The one has frame, rear suspension and shock and rear wheel. $400 + shipping no title IMG4277,4278,4279
2.)The other has small wheel front and rear wheel, early front forks, brakes rear suspension and shock and Brakes. $600 + shipping, no title. IMG4272,4274,4275
3.)I also have a 1995 KX80 with a California title, new style front forks, new tank (2001-2008 style), frame has been adapted to accept 2001 - 2008 Plastics, small wheel Front and rear wheel , rear shock and suspension, brakes. $800 + shipping (I could put the mounts for the QS motor and EM150 controller for $200 more) IMG4282,4283,4284,4285
4.) I also have a 1992 KX80 frame bare. No title. But I can put the mounts in for the motor and controller. $300 + shipping IMG4286,4287,,4289
5 I have a 2003 YZ250 2 stroke frame, $100 + shipping, or I can put the qs motor mounts in it, and EM260 controller. $300 + shipping for all that. IMG1349,1351
The motor and controller kits come with all the wiring, so it is a bolt together kit. You just have to have a battery made. We can do that too, just contact me

 

[DonCox]

I built this for a friend in about 6-7 weeks. It started life as a 1991 KX80, was converted to big wheels some where along the line. My friend put new tires on it and had the suspension gone thru. Gave it to me. Now after he get it back, he is going to ride it a bit and the tear it down and powder coat the frame after all the work.
@Mark911 challenged me to a PIT BIKE race, but I think the owner is going to take it too soon, he is excited.
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After some research I found Electro and Company (ElectroBraap) for the hardware and controller programming. They have bolt on kits for other pit bikes, but not for this model bike, so I had to build my own mounts and battery. They have a beautiful kits for 2002-2018 YZ85, and another kit for 2002 - 2016 KTM 65 SX. But they sell motor-controller-wiring - programming kits that work great.
We purchased a QS 138 70H V3 motor Controller kit, with there (Electro) programming, a wiring harness, with throttle and switches. I comes with a Chinese display that is cute, but not real useful. This kit made the conversion sweet and much simpler.
I'll put a few pics in here, but I took a lot and videoed a lot. If you want all of them, EM me and I can find a repository for all of them or a CD or USB stick. I also have the templates for the motor mounts and battery box. I am going to get some of these water-jetted or Plasma cut, and the battery box case we can talk about it f you are interested. I chose Molicel 21700 cells in a 20S8P config. The motor /controller only draws 210-250A, but for longer ride time I went to the 8S config. I used an ANT 300A Smart BMS. Man that is sweet also. I got most everything from ElectroandCompany.com, except the cells and battery cell holding brackets.
The Bike weighs 175lbs. the motor gear reduction weighs 28.5lbs, complete battery 30lbs. It is so fun to hop on and go, but in Warp mode (15KW, 20HP) the front wheel isn't on the ground very much. It has 3 speeds. ElectroandCompany.com added their programming and it is so plug and play. Th ANT BMS is so smooth and you can look at all the Battery vitals.
Cost is in the range of $3000 to 4000 depending on buying a battery or building a battery. (Not including the donor bike) Motor / controller $1300, Battery parts $1500 ( that's including a 15A charger. Electroand Company gets somewhere near $2300-2500 for there same size SLR3.2 with charger, and that is a good price, knowing how much work goes into one. Theirs wouldn't fit in my frame.) And a motor mounting kit and battery box maybe $300 to 400.
The bike didn't look symmetrical with only one radiator shroud, so I found a 2020 KLX110 bike had a mock radiator shroud. So I got one and it fit with a little work. Definitely looks more contemporary.

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To anyone reading about this build, it is now about 3 1/2 years later, and the owner of the first KX80 here that I built this for never got the frame powder coated, but was out riding it last weekend. It is still running great with all the original components, except the controller. He went to the Noisy Cricket controller because he liked the user features of it, and the other 4 bike he converted all went to the same controller. He let another rider ride this bike for a while and the new rider loved it. These KX 80, 85, and 100’s make great electric conversions. I have made and or helped make 10 or more of these models.
There is one that I built more recently that is for sale on Facebook

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