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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.

One other recommendation, on your Master On/OFF switch and Contactor. The QS10 plug that came with the battery has an anti spark feature, that only works if the Master switch and contactor are on. (continuity) , which you can't do without power hooked up ( because of the contactor). In all of...

Hell with the bike , is that your beautiful riding partner. Good job mate. That sure is black dirt. Anyway, here is a good tune, with the pictures. The pictures might be slightly different than the tune, we have made some slight changes. Most videos have to be in Youtube format. Don

Great work getting it all ready and tested so far. You should be able to attach photos to posts, I don't know what is up with that. Boy it is the middle of the summer heat here 110-120 degree F

They are small feet, That's all they gave me. I have to be careful in strong winds, I get blown over...

I have built a lot of batteries, and they always end up a little larger than the plan, and it is always hard to get them in. We use a somewhat unique method to build. From the very beginning, I wanted fusible links on every cell, and I tried spot welding, but that didn't work well, so I went...

Your CRF is a newer one I think, but I was told on the 2010 and older perimeter frames, that the 450 frame is wider inside than a 250 is. I am building a 2005 450crf now, and I am helping a guy in Italy who is building a 2005 250crf. He was coming up with different measurements for battery...

I have been using a MaxSpeedingrod 3500W generator for over a year. I have a home built electric KTM that I charger with 2 chargers at 13 amps each on 2 plugs of this generator. It has been a good unit and pretty quiet. I have looked at the 6250IE as a good choice for the Stark.

I just came across this Summer sale info on Anker Solix 3800 and all the accessories. https://www.anker.com/?ranMID=43469&ranEAID=0JlRymcP1YU&utm_source=rakuten&utm_medium=affiliate&utm_content=1_8003_CNET&ranSiteID=0JlRymcP1YU-4hUSRBr2d7sOppS50AURYQ And here is the link to their their...

Dave, In answer to your questions as I know, about 25Miles of single track riding on a 20S12P battery Molicel P42A's. I believe you have the Lishen cells, they have about 5% less endurace. But we have seen good mileage on the street bikes we have built. A 2006 YZ450F into a street legal...

Absolutely, glad to help. Lithium-king.com had them made for me. What year CR is your bike. If you go to his site, he has some models already drawn up for the water jetting. With some simple measurements, he can have them made for you. The precision is not exact, and some holes had to be...

I don't have a full understanding of everything Votol, but I believe that the wire on J1-16 is the white wire, and is called LIN, and is controlled by selecting 11 in the port PB4 "one line on", and IO being checked. Then you must go into the software and select One-Lin selection in the...