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I really like your upgraded plastics kit. My next build is a 2005 CRF. I will see if he wants to go with that kit .

I buy my sprockets from lithium-king.com. Buy the $50 one, it is the best. 13 or 14. Will fit and work fine.

Here is the finished rear mount. Not the prettiest welds, but it has worked flawlessly for over a year on the moto track. The supports going up are to support the bottom of the battery tray. You don't want the battery touching the motor, HEAT. Here is mine at a race last weekend. The Moto...

A couple comments, 1mm high for the sprocket is fine, but make sure it is solid and use all 4 bottom bolts and the rear boss mounted to the Swing arm bolt. No rubber mounts. There is no vibration, but these motors put out a ton of torque. Here are some pics of the controller mount. What...

Thanks guys. It is fun to help and see all the success and progress we are all making. It is rewarding to see and help people that chose the electric motorcycle route for personal physical limitations. It has allowed them to continue in this sport. And they are just fun to ride!!!

Unfortunately, They were not allowed to race at the Paris race. Here is the story, or interview with Josh Varize. https://www.vitalmx.com/features/josh-varize-talks-stark-vital-mx-transcript

Yes it is in Florida.

If you really want an electric bike for this kind of racing, check out the bike XEMX1.com is building. The motor controller combo can get 50+hp, but the Quick Change battery is legit. 10-15 seconds to change. The kits are built for the newer Yamaha YZ250-450F bikes.

It is 12S7P here is a picture of a the battery taken apart.

Here are a bunch for sale. https://www.smartrvguide.com/2004-thor_motor_coach-fun_mover-rvs-for-sale

That RV is living in SanDiego, and is being rented out . Contact them and see if they want to sell.

Awesome. we will make a point of coming down an check out the track. Phillip, the Admin of this forum lives here in Lake Havasu too with his Alta's.

Happy Track, where do you ride at down there in Yuma. I'm up here in Lake havasu, with my electric YZ250F and my friend has 3 Alta's. We have a moto track here in town (SaraPark) 928MX . It hasn't opened this year yet. I go to Glen Helen every 2 or 3 weeks. Long drive but worth it. How do...

I have ordered the parts for a good small waterproof speaker and an small MP3 player. I have 12V on our DIY bikes, it is easier to wire in. Low base sounds carry farther than like High tones, But we'll get some sound out there. I will report back when I get it working

I don't know if you noticed the Boost button on my YZ250F at Glen Helen, the most recent one, but it is the Sport mode or Mode 3 put onto an easy to hit on and off on the left side. I was able to hit when needed. Bob and I were neck and neck all around the REM track, I came out a turn with...

Yes it is pretty loud. It always get a head turn.

My answer is a regular Bicycle bell. on the left bar. They are not made real solidly anymore, they kind of fall apart after some riding. I'm thinking of a motorcycle panic rev sound machine, my next invention.

Motoenergy has been using that method for some time. Mark is making many improvements to it in his builds internally in the motor. Just search Axial Flux on YouTube and see all who are developing that tech. Mercedes is working with Yasa a British company for a new version of this technology.

Mark at XEMX1.com has been developing the product he has today, for quite a while. It is a motor/gear reduction and Controller, with a quick change battery, all designed for the Newer YZ 250-450F chassis. This is there new web site. The battery might be able to fit in the newer 2022-2023...

My 2014 YZ250F is the one I am now riding. I love it. It weighs about 230lbs. I just put a slightly larger battery in it, and it is a blast. Here is a YouTube of it at Glen Helen. You can see some of my other builds on my YouTube channel. Here is the Motocross Action on my the build I...