Search results

A bit of a downer that tracks may or may not allow e-bikes. Rules are a little looser in US but my closest track no longer allows any e-bikes, they claim there insurance does not cover that risk. I know some people who are close to the situation and apparently they have had complaints that ICE...

Numbers based on my build using a 2005 RMZ250 Chassis: Build Cost: $6,000 QS138 motor - $700 FarDriver 96V controller - $750 Amorge 96V x 45 amp/hr battery - $2,500 Street legal wiring and display - $300 Misc parts, motor mounts etc. - $250 Donor Bike (this can vary a lot) - $1,500 NOTE: I had...

I have the same opinion as you Phillip. I really like the Stark but to me it feels heavy (or not nimble?) - I built a conversion using the Don Cox formula and I seriously think it is the best bike I have ever had. It just works. I had an Alta and really enjoyed it but it was heavy and it wore...

Really like your MX2 product design. It has a very traditional frame design, nice and sturdy tube design, not the forged aluminum like Sur Ron which has limits in terms of abuse it can take. I also like that you are using a version of the WS138 motor, based on my recently built conversion...

Bob, if guys like us (the Don Cox crew) can figure this stuff out it seems crazy that a manufacturer should be able to do something similar. Maybe the DIY stuff will drive innovation like the hot rodders did for cars.

All I’m saying is manufactures should make a bike that allows owners to select the battery configuration they need, some smart people should be able to figure out a way to do this. I hate waiting to charge so for me I don’t care about the weight, I want to swap within 5 minutes somehow. Lay the...

Semi related, I purchased two batteries from Amorge one with Molicel P45 (4.5Ah) and the other EVE 4.0Ah cells. The EVE battery was 1/2 cost. I have been using both, the EVE battery has less continuous / max amp rating. In the real world I am not seeing really any difference I power or range. I...

Since there are different riding scenarios a manufacture like Stark surely could come up with a frame and battery connection system where the user would have a selection of batteries you could “plug in” like a cordless drill. Imagine the current Stark with swappable battery, Stark could offer a...

Thanks for sharing, seems advancements in cell technology are happening quickly, seems cells can deliver same power but add 25% - 35% range increase that would be a game changer

Great perspective especially since you have owned Stark and Alta’s.

This is an interesting conversation, I think at the moment e-bikes (even the best like the Stark) can’t match the range of ICE and highest level pro’s can “out ride” the bike by over heating but I think this is missing the point. Motocross has gotten off the hook expensive, does everyone need...

All I know is my home built Don Cox recipe is stupid fast, handles great, at least 20 pounds lighter than the Varg, can swap the battery in 5-10 min (ie between motos or trail rides), 20-25 mile range agressive trail riding and can be built for same price as high powered Sur Ron type bikes. The...

I built my first ebike (bicycle) in 2013, it was cool for the time, a custom frame made but a guy in El Segundo (called a phasor). It had the most powerful hub motor you could buy at the time and a 90 volt battery. At that time you really couldn’t build or buy a full size e-dirt bike (maybe...

The more I look at the current market offerings I have come to my own conclusion no one is building what I want, so I built my own using the Don Cox formula. On a positive note it is awesome we have all these new options, Sur Ron started a whole category, reasonable cost, ever increasing power...

Totally awesome, also motocross action made this short video about Don’s bike. https://www.facebook.com/motocrossactionmag/videos/check-this-thing-out-dont-cox-builds-home-made-e-bikes-with-this-one-roughly-get/1797150647634248/

Crazy that this isn’t standard issue on all bikes. Mountain bikes have this. Geez

I gave up on gas dirt bikes because of maintenance, when they sit long periods carb problems, and oil change and air filter and too ends etc. Electric has real limitations, when I had an Alta I could only get 20 miles of moderately aggressive trail riding, I’m old but I could have gone twice...

I like this bike especially considering the price. Wouldn’t KTM have some kind of legal recourse as it’s a clone.

It is working really well, it’s made out of steel angle iron, I think 1-1/8” but I can’t remember. It bolts to the motor mounts at the front of the frame. At the back I had lithium king make an extension on QS138 mount where the battery frame connects. To keep it from flipping around I have a...

Ah yes, I started with a nice e bicycle and then wondered how to go faster. Many years later, much $$$ and now its full addiction. Have fun.