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Dave, this was a 2023 Honda CRF, and it came with a Titanium tank, and I just couldn't bare to cut it up. So I found this Carbon Fiber tank cover. You can see the battery comes all the way up The power switch on this one is for Dual battery system, but you can get both single and Dual battery...

Dave, I tried some battery combinations in the Honda bike I have here. Just some test fittings. If you go back above, and look at IMG6656, the side view of the Honda. you can see the space below the battery in front of the motor, I can fit a 6 cell by 8 cell pack in there. Then I made another...

Dave, A couple of ideas. The shape of the battery you proposed will be difficult to fit. Bob Casper in his CRF 250 build built 2 separate batteries. 20S6P x 2 for multiple reasons. One to fit in the CRF frame, two for the battery heat, and three for faster charging. Now there could be space...

Dave, Bayodome has some valid comments, and some good ideas. I agree with not weakening the frames whenever possible. I think these cuts are minimal. But they do compromise the frames strength. But since you have a clean slate, lets look at his choices. On his YZ250F ebike, he is using the...

I have a 6.25x8.25x13" Amorge in a 2005 450CRF frame with only slight mods. I heard that the 250 frame is narrower

Yes you can ask for it and they will do both. I just received a battery from them, with Open discharge, but i did not spec 40A Discharge, so it only has 20A charge. Here are a couple of pictures of the KTM battery I just got. This is a 20S12P Molicel P42A cells, Open Discharge, and Charge...

I don't want to bad mouth Eon Lithium , but we have bought a few batteries from them, and have not been real happy. Bob knows Raymond there at EON Lithium real well, and has one of his batteries, and I put one in one of my customers bikes, and were not real keen on them. The battery you are...

No I’m not. I wanted to go but cannot. Austin at Electro and company are going to be there. It should be very interesting

I have just finished a 2005 CRF450 and I used 1/4" (6mm) 6061 aluminum. Lithium-King .com drew them up and had them waterjetted for me. But There is a offset needed for certain frames. Here is a picture (PDF) of the mounts superimposed on a Honda frame. Use all the mounts on the motor...

I believe the throttle used on the Stark is the same one used on the ALTA, it is the Hirschman Throttle. You could use it, but is has a large diameter and it makes it hard to actuate the front brake on the smaller bikes, and a lot of front brake master cylinders. There are ways around it and...

As far as thermal limits, the QS138 70H V3 is quite good. We ( probably 20+ DIY Bikes with pretty much the same QS138 70H V3, EM260S, 72V 50AH with an ANT smart BMS ) have not overheated the motor, We have overheated the controller without water cooling, and we have overheated the battery. The...

I have built a lot of these type bikes, and have just finished a 2005 450CRF. I used Lithium-king for mounts and sprockets, QS138 70H V3 motor and the Votol EM260S ( the EBMX X9000 is a very good controller ) and a Amorge battery. ( 20S12P Molicell P42A cells, ANT smart BMS in a metal box that...

There are different cells that could be used for specific uses. The Samsung 50S cell gives 5000mah capacity, but create more heat at high current. But for trail riding or range, it gives you 20% more range than the Molicel and the same weight. But Stark has to start offering these options...

Yes they are made of steel, and work well. Two things I see are the third bolt for the motor and spacers in the front and rear mounts. You said you are waiting for the long bolts for the front motor mount with spacers, ( I use the stock bottom motor mount bolt from the gas motor ), and the...

Yes I agree with Bayodome, you should never cut the frame. A lot of engineering goes into making these safe to jump.

You give me a donor bike, and the qs138 70H V3 motor and controller is about $1000. About $1000 in metal, switches, mounts, wiring, usually new bushing in the swing arm and linkage, and shocks or fork rebuild. The battery is between $900 for good cells, Lishen, $1250 for Molicel P42A cells (...

Go with a KX85 /100 Small wheel. I have built about 5 of these for friends and myself. Those 5 I have built have spawned off another 5 or so more. It is such a nice trackable adjustable platform. Wired Off Road make a close to bolt on kit for the KX85/100 2001 to almost current models...

It is a little heavier, 110lbs compared to 139lbs, but they are both on wheels. 240V on the GSX7100 is a real plus to charge a Stark or Alta. The Predator only has 120V.

Have fun in Bali.