Search found 666 matches

by Overclocker
May 29 2020 12:20am
Forum: E-Bike Non-hub Motor Drives
Topic: KCR monsterebike
Replies: 7
Views: 243

Re: KCR monsterebike

very nice build! excellent workmanship. but please put it up on some kind of gallery. i'd love to view all your pics but it's too slow to click one by one

btw i'm also working on a very similar build.

IMG_20200529_105004.jpg
IMG_20200529_105004.jpg (494.54 KiB) Viewed 19 times
by Overclocker
May 28 2020 10:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: Light dirt bike, QS 120 70h motor, custom steel frame

IMG_20200529_105004.jpg
IMG_20200529_105004.jpg (494.54 KiB) Viewed 15 times


- battery packs got moved up slightly
- slightly longer swingarm

still need to redo my saddle struts and paint the frame bright yellow/green like the decal on the fork. swingarm and struts would be silver or gray
by Overclocker
May 28 2020 1:40am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 932
Views: 87212

Re: Votol EM-100 & EM-150 controllers

the parameters set right makes sense, because I did forget to mention the motor gets hot under normal riding (just cruising around) I thought that was a red flag. but I never touch flux weakening or anything, but I did adjust my throttle min and max because I had a dead band at beginning. I measure...
by Overclocker
May 27 2020 5:58am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 932
Views: 87212

Re: Votol EM-100 & EM-150 controllers

larsb, the flux weakening values are very unpredictable. for example i can see in the "display" tab that mid is selected but when i change the fw values for the sport mode the motor RPM changes another example, if i put zeros on all the fw fields the motor will turn very slowly like 200 or 300 rpm. ...
by Overclocker
May 27 2020 12:35am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 932
Views: 87212

Re: Votol EM-100 & EM-150 controllers

hi I saw you posted posted you got the low brake to work? what is the difference between that and the high brake? I have the purple wire(high brake) going to my brake switch along with a 12v wire. this is how I was told the regen works. the only issue I have is when I let off the throttle my engine...
by Overclocker
May 23 2020 2:12am
Forum: E-Bike Technical
Topic: Lightest DOT compliant 16" moped wheels?
Replies: 7
Views: 291

Re: Lightest DOT compliant 16" moped wheels?

Image

this is a 1.2 x 17 rim. 680 grams only

tire is 2.5 x 17 knobby. 2000 grams

sorry no links. local shop
by Overclocker
May 22 2020 1:10am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 932
Views: 87212

Re: Votol EM-100 & EM-150 controllers

low brake.jpg
low brake.jpg (106.14 KiB) Viewed 122 times
finally figured out how to get regen brake using the low-brake wire (gray/black) momentary switch to ground (black wire)

this controller is such a pain. documentation sucks
by Overclocker
May 14 2020 10:53pm
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: Light dirt bike, QS 120 70h motor, custom steel frame

Kuberg7.png
Kuberg7.png (474.72 KiB) Viewed 167 times

i think i'll copy this. seems to be both a chain guide and a tensioner
by Overclocker
May 14 2020 10:40pm
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: Light dirt bike, QS 120 70h motor, custom steel frame

IMG_20200515_101550.jpg IMG_20200515_101811.jpg HTB1b0.pkaagSKJjy0Fcq6AZeVXaL.jpg so here's the complete frame w/ the motor mount. 8.48kg weight. not that much heavier than the surron's but not exactly a fair comparison. the surron saddle subframe seems to be included in that weight figure. but sti...
by Overclocker
May 14 2020 5:07am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: Light dirt bike, QS 120 70h motor, custom steel frame

Looking good man! Are you going to run a tensioner now? Is that the Pirelli vintage dirt bike moped tires 17"? i think i just bought two of those That QS motor doesn't look so huge now that its in the frame, a few other threads are using these motors in actual dirt bikes that are likely 100lbs heav...
by Overclocker
May 12 2020 9:57am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: Light dirt bike, QS 120 70h motor, custom steel frame



alignment seems ok

i just counted the chain. by serendipity it's exactly 130 links! so this means two things: 1) no need to cut, i simply buy a 130L chain. 2) i don't have to buy 140L chains which are rarer
by Overclocker
May 06 2020 10:48pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport
Replies: 94
Views: 9961

Re: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport

skeetab5780 wrote:
May 06 2020 8:21am

WHY oh WHY am i so good at overheating motors!


:lol:
by Overclocker
May 06 2020 3:08am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: Light dirt bike, QS 120 70h motor, custom steel frame

Looking good, Can I ask why you are not running the motor concentric to the pivot anymore? Was there an issue with it or something else? Thanks well the old motor (BHT) was small enough to fit between the pivots. it was an attempt at compartmentalization so i could treat the drivetrain+swingarm as ...
by Overclocker
May 05 2020 1:09am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

IMG_20200505_134458.jpg
IMG_20200505_134458.jpg (333.64 KiB) Viewed 472 times
IMG_20200505_134546.jpg
IMG_20200505_134546.jpg (301.42 KiB) Viewed 472 times

swingarm alignment seems good as per eyeball :lol:

by sheer coincidence the motor sits almost exactly flush w/ the side of the frame!
by Overclocker
May 04 2020 10:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

IMG_20200505_104145.jpg
IMG_20200505_104145.jpg (407 KiB) Viewed 480 times
by Overclocker
May 03 2020 8:34am
Forum: E-Bike Non-hub Motor Drives
Topic: Project Shoestring
Replies: 23
Views: 879

Re: Project Shoestring

nice work! will be watching this thread...

btw you'll be using this GNG motor?

Image
by Overclocker
May 03 2020 1:21am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

Great progress! I'm curious about which method you use to bend tubes. And the tube notching is perfect how you did it? IMG_20200502_124210.jpg IMG_20200502_124149.jpg thanks to the lockdown the shop that does my bending is closed. so here's another covid mini project. extremely simple bender. just ...
by Overclocker
May 02 2020 1:23am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

sa.jpg
sa.jpg (27.92 KiB) Viewed 610 times
18422790_674240282763055_8736334749505884954_o-1024x768.jpg
18422790_674240282763055_8736334749505884954_o-1024x768.jpg (133.67 KiB) Viewed 610 times
IMG_20200502_125236.jpg
IMG_20200502_125236.jpg (220.33 KiB) Viewed 610 times

so i decided to copy LMX's instead of the kuberg...

my city is on lockdown so the CNC plasma shop is closed. so all parts cut by hand :evil:
by Overclocker
Apr 28 2020 10:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

Sub'd again these new QS motors are looking pretty hefty, curious how it does on this bike since mine weighs similar got high hopes for this motor. it'll probably be the "final" motor for this frame :lol: just got the frame extended at the bottom. needed butt welds (which i'm not a fan of) on both ...
by Overclocker
Apr 26 2020 9:50pm
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

sqbatt.jpg thanks but tbh i did make a lot of compromises for the sake of simplicity e.g. my 17s6p rectangular battery is arranged 17x6 which puts the weight high and forward (this can be felt while riding). a squarer pack would fix this relatively minor issue at the expense of a lot less elegant s...
by Overclocker
Apr 26 2020 9:59am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

useful excel tool: https://www.datamc.org/data-acquisition ... -geometry/


exel.jpg
exel.jpg (193.66 KiB) Viewed 755 times

setup2.jpg
setup2.jpg (78.37 KiB) Viewed 755 times


so by moving the motor downwards by 31mm an anti-squat of close to 100% can be achieved at 33% sag
by Overclocker
Apr 26 2020 3:05am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 186
Views: 35676

Re: New build, BHT mid-drive "direct", custom frame

IMG_20200426_150920.jpg
IMG_20200426_150920.jpg (381.99 KiB) Viewed 778 times
IMG_20200424_144154.jpg
IMG_20200424_144154.jpg (218.39 KiB) Viewed 778 times
antis.jpg
antis.jpg (54.29 KiB) Viewed 778 times

so there's the new motor side-by-side w/ the BHT...

here's the problem. if i don't mod the frame the chain pull angle doesn't look too good for anti-squat so i went ahead and cut the frame to mount the motor lower
by Overclocker
Apr 18 2020 10:07pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 932
Views: 87212

Re: Votol EM-100 & EM-150 controllers

Out of interest. What was your Flux weakening setting ?? will check later @overclocker: where did you buy from? qs-motor or SIA/Ecosys qsmotor (www.cnqsmotor.com)? whichever it was, seems their delivery is worse than i've experienced aren't those 2 the same company? here in philippines importations...
by Overclocker
Apr 18 2020 4:44am
Forum: General Discussion
Topic: Welding bike frames, how to get started?
Replies: 51
Views: 7787

Re: Welding bike frames, how to get started?

http://i.imgur.com/n20LyC6.jpg this is what i used to fluxcore that frame. not exactly the cheapest model as it's MIG-capable (has gas inlet and outputs DC). i probably wouldn't recommend the harbor freight model that does AC-only and only has 2 heat settings (high and low) to weld up the critical ...
by Overclocker
Apr 17 2020 10:59am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 932
Views: 87212

Re: Votol EM-100 & EM-150 controllers

Yes, I’ve had my controller at 50V undervoltage setting when i tried to find root cause to cutouts i had at the time. thanks! finally got my controller. seems to accept 50v but i hope there's no weird LVC issues at those low voltages it's annoying that it's in park mode out of the box :roll: so i h...