Search found 60 matches

by kreal
Jul 07 2021 7:53am
Forum: EScooter/EMotorcycle Build Threads
Topic: Conversion of a Bultaco Sherpa
Replies: 100
Views: 4617

Re: Conversion of a Bultaco Sherpa

I think it's going to be an awesome ride.
by kreal
Jun 24 2021 8:09am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Electric ATV
Replies: 0
Views: 205

KHB - Electric ATV

So new project again. This time an homemade electric atv made out of lightweight aluminum frame. Specs: https://www.aliexpress.com/item/4000249975855.html Motor: MY1020D 72 volt / 45A Output /W:3000W Rated Speed:6500RPM Weight:4.8KGS Diameter:95mm Rated Torque/N.m:5.4N.m Controller: Power:3000w Volt...
by kreal
Jun 22 2021 3:57am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Honda CR125
Replies: 9
Views: 532

Re: KHB - Honda CR125

But yeah, I will put this project on hold, as I didn't know I could fix the motor as good as it's running now.
by kreal
Jun 22 2021 3:51am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Honda CR125
Replies: 9
Views: 532

Re: KHB - Honda CR125

I would sell it and buy a newer bike without / with blown motor. +1 to that, if it's running well then selling it on would be best imo. Older off road bikes are (a bit) collectable and that one looks quite clean. Also,if you're set on hub motors and want something off road, it would be a waste to d...
by kreal
Jun 22 2021 3:50am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Honda CR125
Replies: 9
Views: 532

Re: KHB - Honda CR125

Elektrosherpa wrote:
Jun 21 2021 12:05pm
kreal wrote:
Jun 21 2021 9:16am
Also could place the hub motor in the front wheel and make it 4WD,
A "2WD".... for a "4WD" you had to add two more wheels :twisted:
True :D
by kreal
Jun 21 2021 9:16am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Honda CR125
Replies: 9
Views: 532

Re: KHB - Honda CR125

I made the 125cc motor work, and it purrs like a kitten now. Also restored it to almost original with colors etc. Restore plastic to orginal color and state as best possible. Fixed hole and cracks in plastic with superglue and baking soda, and putty. Change handle bar to 30 inch ( better in jungle )...
by kreal
Jun 11 2021 2:07pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Honda CR125
Replies: 9
Views: 532

KHB - Honda CR125

Honda CR125 - 1989 Donor bike $965 Screenshot 2021-06-12 at 01.53.54.png $319 Motor: QS138 70H V3 at 72v Screenshot 2021-06-12 at 01.56.32.png $310 +- Controller: VOTOL EM150-2SP Screenshot 2021-06-12 at 01.58.47.png $740 Battery: 72V 40AH 4000W(5A) 60A BMS, might need more, any suggestions on alie...
by kreal
Jun 10 2021 8:19am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

So final result. Screenshot 2021-06-10 at 20.17.37.png Don't look at the welding on the motor. The sprocket kept falling off, and I got tired of it. Screenshot 2021-06-10 at 20.17.21.png It works pretty good with a gear ratio of 14T -> 42T 420 chain -> 14T -> 46T 520 chain. 9.86:1 Top Speed: 29.94
by kreal
Jun 10 2021 7:56am
Forum: EScooter/EMotorcycle Build Threads
Topic: 1984 Honda Elite CH125
Replies: 7
Views: 469

Re: 1984 Honda Elite CH125

My idea is to bolt this Suzuki swing arm in there just above the parking stand. Is anything wrong with having the swingarm pivot a little lower than the rear axle? It looks like that is what will be the result. If I understand correctly, then it shouldn't be a problem. You'll see this on most motoc...
by kreal
Jun 07 2021 5:32pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

Looks like the pigeons are getting out of hand in your shed! ;) Ingenious... terrifying but ingenious. Will your shock still clear when it compresses? And in that speed/ratio calc, doesn't have to be the total height of the tire? I'm guessing 17 is just the rim size but can't make out the tire mark...
by kreal
Jun 07 2021 12:05pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

So this is what I came up with. Should work ok. Drilled a hole in the swing arm, and added two barrings to support the jackshaft. Screenshot 2021-06-08 at 00.03.59.png Screenshot 2021-06-08 at 00.03.50.png Should give me 9:1 in which if I understand correctly is plenty of torque. Screenshot 2021-06-...
by kreal
Jun 05 2021 10:39am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

If you use a chain with a smaller pitch, you can get larger ratios. Have a look at the OSET bikes for example. I'm using #219 (gokart) chain, with a 10T front and 121T rear. Thanks! just can't seem to find sprockets this size around here. Was looking at aliexpress.com, but couldn't find. I do have ...
by kreal
Jun 04 2021 6:08pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

I do have another 14T and 45T sprocket, I could make jackshaft from. Motor - input jackshaft - output jackshaft - wheel 14T -> 46T -> 14T -> 45T Would give 20.66MPH with 17Inch tires, and a gear ratio of 10.56:1 as the motor has a rated RPM of 4300 However I have no idea if this would provide enoug...
by kreal
Jun 04 2021 2:19pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

I do have another 14T and 45T sprocket, I could make jackshaft from. Motor - input jackshaft - output jackshaft - wheel 14T -> 46T -> 14T -> 45T Would give 20.66MPH with 17Inch tires, and a gear ratio of 10.56:1 as the motor has a rated RPM of 4300 However I have no idea if this would provide enough...
by kreal
Jun 04 2021 2:05pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

However this motor has no torque whatsoever, even with a very big 47T sprocket on the back, and 14T in front using 520 chain. I kinda knew that. Although it has plenty of rpm. But how do I fix more torque, some sort of gearbox ? Yep, you will need a jackshaft Your desired 14T>50T/14T>47T will have ...
by kreal
Jun 04 2021 1:43pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

Motor and controller mounted. Screenshot 2021-06-05 at 01.35.18.png Screenshot 2021-06-05 at 01.31.21.png Screenshot 2021-06-05 at 01.33.55.png However this motor has no torque whatsoever, even with a very big 46T sprocket on the back, and 14T in front using 520 chain. I kinda knew that. Although it...
by kreal
May 29 2021 6:13am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

Added a little plastic leftover from my Yamaha nouvo elegance 135 lc conversion. Recycle to the max. Also added some stickers, because why not. Screenshot 2021-05-29 at 18.11.27.png Use an old mudflap I had from a scooter. Screenshot 2021-05-29 at 18.11.32.png Screenshot 2021-05-29 at 18.11.38.png
by kreal
May 28 2021 5:10am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

Really happy with the result so far, just waiting for 3000w motor.
Screenshot 2021-05-28 at 17.09.32.png
Screenshot 2021-05-28 at 17.09.32.png (2.84 MiB) Viewed 334 times
Screenshot 2021-05-28 at 17.09.39.png
Screenshot 2021-05-28 at 17.09.39.png (2.3 MiB) Viewed 334 times
Screenshot 2021-05-28 at 17.09.48.png
Screenshot 2021-05-28 at 17.09.48.png (2.82 MiB) Viewed 334 times
by kreal
May 27 2021 5:14pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: KHB - Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

New knobby tires, and shorten the frame a bit.
Screenshot 2021-05-28 at 05.14.01.png
Screenshot 2021-05-28 at 05.14.01.png (1.68 MiB) Viewed 350 times
by kreal
May 26 2021 5:55am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: Project eTurd Motocross - 3000W - LiFePO4 48V 24Ah

much progress today. Ready for paint Screenshot 2021-05-26 at 17.50.56.png Screenshot 2021-05-26 at 17.51.03.png Screenshot 2021-05-26 at 17.51.08.png I found the best color I could for an eTurd. Also added a bracket for front brake caliber today. Screenshot 2021-05-26 at 17.49.09.png Screenshot 202...
by kreal
May 24 2021 10:05am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: Project eTurd Motocross - 2000W - LiFePO4 48V 24Ah

Battery box fabricated, half inside frame, half outside. Screenshot 2021-05-24 at 22.04.05.png Also added massive disc brake for front wheel. Screenshot 2021-05-24 at 22.04.41.png Seat also made. Not to sure right not about position, maybe I'll cut the frame shooter. Screenshot 2021-05-24 at 22.04.5...
by kreal
May 22 2021 3:32am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: Project eTurd - 2000W - LiFePO4 48V 24Ah

Battery ready. Battery LiFePO432650 3.2V 6Ah(6000mAh) Maximum continuous discharge: (3C 15A) 16S-4P This should give me 60A continuous and 100A instantaneous discharge, if my math is correct ? So plenty of juice for motor at 42A / 48v = 2016watt Could probably get a better controller and run it at 5...
by kreal
May 20 2021 6:55pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Yamaha nouvo elegance 135 lc - Converted to electric Lowrider
Replies: 2
Views: 338

Re: Yamaha nouvo elegance 135 lc - Converted to electric Lowrider

Added volt and amp meter.
Screenshot 2021-05-21 at 06.52.32.png
Screenshot 2021-05-21 at 06.52.32.png (947.12 KiB) Viewed 253 times
Screenshot 2021-05-21 at 06.52.39.png
Screenshot 2021-05-21 at 06.52.39.png (1.07 MiB) Viewed 253 times
by kreal
May 20 2021 6:54pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Suzuki skydrive 125 electric conversion
Replies: 15
Views: 1805

Re: Suzuki skydrive 125 electric conversion

Added sidecar, with alot of batteries in box to carry heavy stuff using the 3000w QS motor.
Screenshot 2021-05-21 at 06.53.28.png
Screenshot 2021-05-21 at 06.53.28.png (1.52 MiB) Viewed 232 times
by kreal
May 18 2021 2:34pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 3112

Re: Project eTurd QSMotor 3000w 13870h - 6x 12v 5ah Lead Acid

A little progress:

Moved the hydraulic foot brake to new foot pegs.
Screenshot 2021-05-19 at 02.32.45.png
Screenshot 2021-05-19 at 02.32.45.png (1.43 MiB) Viewed 746 times