Recent content by DonCox

Votol is a great controller, but there are some limitations. A lot of the displays do report errors, speed, gears, and current, on the One Line format, but on the Display page in the software there is more information. But the Display page is only on a PC. I agree with Vince on the 72V, not...

I don't know the BAC8000 controller, but I just love the Votol EM260S controller. I have used them on most of my builds, I can program it, and it works. A Votol EM260S controller is $400 . I can send you a complete harness tune to put on your bike and it works. I don't have a spare EM260S...

I am kind of curious that this bike doesn't wheelie quite easily, With that low gearing. I am about 9 to 1 on mine . Yes between 8 to 9 to 1 is the right range. I have very little experience with the BAC 8000 controller, but the Votol has 3 modes and then Sport mode. In Sport mode and with...

Hey Struggle, Sorry you took that as dogging on someone's welds, but I knew that you bought it that way, and didn't do it. I am just as bad on my aluminum welds. I would recommend going to the 520 sprocket setup and when you get a good sized battery, you can run 13, or 14, / 50, and still...

Good question, yes they produce more heat. They are not good for more than 25A without creating heat, so I have been told by Amorge. But in this configuration 20S13P is about 325A (13 x 25A) , I set his Mode 3 and Sport at 350A, and you would have to hold the throttle wide open for quite a few...

So I found this rusted Razor SX500 sitting on the curb in the neighborhood. I picked it up and said what can I do with this??? much to my wife's chagrin. You can see the rusted spokes on this thing, everything exposed was rusted. So I replaced everything that rusted ( new spokes for the...

Great project. I look at the aluminum welds, and laugh, they look like mine. The only good looking aluminum welds on my builds are in spots you can't see. But they have all proven to be solid. Great choice on the X9000 V3 controller. I am going to try one of those soon. They have many...

Here is a QS138 70H V3 motor. On my bathroom scale. 26.6 lbs

It looks real nice. What cells are you using in your battery. Why did you compromise the frame. I got a 20S12P battery in the same frame with a lot of space left. We build our bike to run on the MX tracks, and I do not modify frames because of big jumps and the stress. Your work looks real...

Thanks guys for all the interesting points of view. There is a lot of diversity amongst all of us. My reason for building Electric Dirt bikes comes from riding dirt bikes for almost 60years, and having the great fortune to be able to still ride. I started building them 15 years ago because I...

People are racing YZ250F bikes and 450F with electric power trains. Practical experience says it works. Do you even ride a bike Erwin P? Here is a friend who races them in Florida with an A rider who wins on a YZ450F EBike. The wheels aren't falling off the bikes. They do 1 or 2 laps and...

If Yamaha wants to enter the Ebike market, they should follow some of what Stark is doing, but also listen to what the riders want. The weight is a killer. The Whoops at the first WSX killed the Starks, but they weren't the caliber rider as the lead riders. Yamaha has a perfectly good...

Build your own on your favorite bike/frame. I like the 2014-2022 KTM 250SXF, I have built new and older Honda CRF's, Yamaha YZ250F and 450F 2014 and newer. I am 80 years old and here is mine at The World Vet Nationals, with me on it. I can give you a list of the parts and power, if you want...

I mounted the controller on a 1/8" piece of aluminum. and the cooling plates on the shock side. You can cut the plastic to allow the cooling plates to fit. The controller in a closed box will heat up. Mine did. with the cooling it is amazing how cool it now is. I ran 3 full motos at Glen...

Just for information, These races at Glen Helen were 4 laps per race, 400A (Sport Mode) for the start and the rest of the race with plenty of power in 300A mode. About 15 minutes. The outside air was 80-85 degrees F, The controller was just warm, The motor was hot to the touch but not too...