Search found 54 matches

by kreal
Jun 11 2021 2:07pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Honda CR125
Replies: 1
Views: 127

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: 2898

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: 3
Views: 213

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: 2898

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: 2898

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: 2898

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: 2898

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: 2898

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: 2898

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: 2898

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: 2898

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: 2898

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 270 times
Screenshot 2021-05-28 at 17.09.39.png
Screenshot 2021-05-28 at 17.09.39.png (2.3 MiB) Viewed 270 times
Screenshot 2021-05-28 at 17.09.48.png
Screenshot 2021-05-28 at 17.09.48.png (2.82 MiB) Viewed 270 times
by kreal
May 27 2021 5:14pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 2898

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 286 times
by kreal
May 26 2021 5:55am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 2898

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: 2898

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: 2898

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: 272

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 187 times
Screenshot 2021-05-21 at 06.52.39.png
Screenshot 2021-05-21 at 06.52.39.png (1.07 MiB) Viewed 187 times
by kreal
May 20 2021 6:54pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Suzuki skydrive 125 electric conversion
Replies: 15
Views: 1719

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 146 times
by kreal
May 18 2021 2:34pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 2898

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 598 times
by kreal
May 18 2021 9:54am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 2898

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

Interesting build but please bare this in mind for lead-acid: https://en.wikipedia.org/wiki/Peukert%27s_law Thanks, yeah I'm going with LiFePO4 instead, as they should be the safest type, in case I crash in the jungle. Also I found this motor kit very cheap, the QS motor is to expensive still for t...
by kreal
May 18 2021 3:17am
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 2898

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

Seat welded:
Screenshot 2021-05-18 at 15.12.24.png
Screenshot 2021-05-18 at 15.12.24.png (1.67 MiB) Viewed 645 times
Screenshot 2021-05-18 at 15.20.20.png
Screenshot 2021-05-18 at 15.20.20.png (1.7 MiB) Viewed 645 times
by kreal
May 16 2021 5:30pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 2898

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

Still work in process, I think this might be the final reversion, just don't know if the shock is to steep? IMG_20210515_005533.jpg Not sure about the angle of the rear shock. But I'd say its upper fixing point is designed too weak. And in my opinion, the steering angle (front fork to frame) is way...
by kreal
May 16 2021 3:02pm
Forum: EScooters/EMotorcycles
Topic: INDEX, motorcycle and scooter E-Conversions
Replies: 36
Views: 2176

Re: INDEX, motorcycle and scooter E-Conversions

viewtopic.php?f=10&t=105454

Project eTurd custom frame

DC48V 2000w random motor 45A
2000w controller
LiFePO432650 48v 12AH battery
1.jpg
1.jpg (5.85 MiB) Viewed 86 times
by kreal
May 16 2021 2:57pm
Forum: EScooters/EMotorcycles
Topic: INDEX, motorcycle and scooter E-Conversions
Replies: 36
Views: 2176

Re: INDEX, motorcycle and scooter E-Conversions

viewtopic.php?f=12&t=105234

Suzuki skydrive 125 electric conversion

QS 3000w 13870h
VOTOL EM150SP controller
72V to 12V DC to DC Step Down Converter
6 x 20AH lead acid 6-DZF-20.2
all LED lights
Front and rear camera
IMG_20200321_184836.jpg
IMG_20200321_184836.jpg (244.87 KiB) Viewed 89 times
by kreal
May 15 2021 3:45pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Project eTurd - 2000W - LiFePO4 48V 24Ah
Replies: 40
Views: 2898

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

Brake caliber added, and adjusted the shock for better angle. Found a second hand foot brake, even though it's not really needed on a electric bike :) 1.jpg I'm thinking a much larger battery could go here, as I see on many others, as I made plenty of ground clearance. 2.jpg Motor will go here or si...