Posts
1669
Joined
10/19/2015
Location
Edinboro, PA
US
Edited Date/Time
1/9/2020 2:47pm
https://www.urbanscooters.com/products/mototec-36v-pro-electric-dirt-bi…
And I have a kit to upgrade it to 48 volts already.
My son's birthday is tomorrow, and these were out of stock since before Christmas until today.
Now bring out the classy anti-electric gentlemen to badmouth a 5 year olds birthday present!
Already got the bug. Thanks to Alta I built a track last year for us. Basically after 5pm we don't ride loud bikes. Also got an old KX65 and a rekluse, and lowering links for it. Trying to avoid the fast 50s and he's big for his age so that helps a lot.
His sister turned 2 in December and throws a fit if she doesn't get to ride on my Alta and pitbike with me. So far I've helped 7 kids get the Moto bug which is much more enjoyable than dealing with most adults.
The suspension is the same as all the Chinese pit bikes are using. They claim it is for kids over 13 and between 100-130 pounds... Whatever it's perfectly fine for a kid that can handle a 24 inch seat height.
It pulled my 220 lb ass around just as good as a PW50 but better off the line.
It'll probably hold up better to jumping than a PW50 for sure. I gotta figure out if overvolting to 48 volts is safe since the motor mounts inside the swing arm. The battery is centered in the bottom of the traditional engine compartment,
so it has a very low center of gravity.
Mechanical discs are good enough for a peewee bike. Probably gonna take this to our local arenacross track sometime next week with the Honda xr50 for a backup.
The front tire is 12 inches instead of the traditional 10 so the bumps and rocks should be a little less gnarly for the little guys.
The power and speed are adjustable.
Everything is better than a slower gas 50 but the seat is 3 to 4 inches taller than a PW or Honda.
The Shop
Motor rated 36 volts 1000 watts. I think it should handle a 48 volt 10 amp hour battery. That would be 480 watts I think,
but correct me if I'm wrong.
One piece 36 volt 10 amp hour battery (stock).
The battery is exactly 1/3 the size of these 12 volt 10 amp hour batteries. I have ten of these. I think I can wire one 12 volt in a series with the 36 volt stock battery. Or I could just use 4 of the smaller batteries. Pretty sure both configurations will work, but I'm not an expert on this.12 more volts should bump the speed up from 19mph to about 25. There's room for 60 volts in the first battery picture, and the side covers go back on without interference....
I'll post controllers and throttles in a few...
https://www.ebay.com/itm/1000-W-48-V-motor-ZY1020-w-base-speed-controll…
Hope your kid enjoys.
Slid the forks up 1.5 inches. The shock is 9 inches eye to eye, and I ordered a 7.5 inch shock for $20 to lower the rear.
Only running it stock at 36 volts for now. If he's ready and wants 48 volts we'll put the big bore kit in it.
Pit Row
As far as 50 prices being crazy, that's why I am embracing electric and an old KX65 with a rekluse, cut down seat, throttle stop, and lowering links.
$4000 plus for a 50 or 65 is what I consider being ripped off. I want to enjoy life and Moto, but I won't throw money away like that unless the kid begs to try and win Loretta's some day. So far, it doesn't look like we are going to bother with the big time ever. So, cheap as we can it is.
The new shock is a pogo stick that doesn't move much with him on it. Good enough for an after 5 bike on our track at home. Only had the adjustments at 25 percent. Stock it will definitely blow a PW or Hondacrf50/Yamaha ttr50 away until it hits the 19mph top speed.
Again, a 48 volt scooter kit should bump it up to 25 mph and closer to the power of a fast 50 but with more torque on a holeshot. Gonna try to get it to the indoor track when the roads dry up and get some video up for those interested in the bike.
https://youtu.be/feW1CZPnrWg
Cool glad to see he is having fun with it. My kid has been on his since Christmas. He has put quite a few hours on it already. The brake pads have wore pretty quick and had to tighten the chain a few times but other than that it has been solid, and he is already going way harder on it than i ever thought he would (He will be 7 in a couple months).
Let us know how the 48v upgrade goes. So far i honestly think the 36v is fast enough but was considering going to a higher amp hour 13ah or 15ah for a little more tourqe up hills also wouldn't need to change the controller going that route. If he isn't able to carry his momentum into big hills it can get a little sluggish.
He's a little scared of the mud and rusty from a long winter. Again 0-19mph the electric bike wins hands down on acceleration, and it can be de-tuned in a second to be way slower and gutless.
The Honda was in 3rd gear the whole time.
https://youtu.be/cnbI__RojF8
https://youtu.be/IeGHmta_xcU
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