Search found 165 matches

by sketchism
Oct 12 2019 4:09am
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

may even be ok with a 2mm silicon thermal tape under in place of the thermal paste, pads it out snugly and good heat transfer Conclusion: Diameter (287.4mm) is a few mm less than the 295mm of QS273, could be problematic for a good contact surface with hubsinks. :idea: Get a 15mm wide, 902mm long and...
by sketchism
Oct 10 2019 4:55am
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

Thanks mate thats definately handy, my main concern is the QS 205 ones dont match the drawing or specs from QS (295mm) in real life after paint etc and the tolerances are so tight that i actually spent quite a bit of time with trial and error to get the final hubsinks to truely fit correctly so i wo...
by sketchism
Oct 09 2019 7:28pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

I have a bit of time on the CNC this week does anyone with a 273 at hand have the exact measurements for the magnet ring diameter, i have been given 3 or 4 different ones now and want to make sure im accurate, it looks like 295mm is the average so far? what is the true clearance between flanges? can...
by sketchism
Oct 04 2019 11:48pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

The gap works as a spring to keep tension on the assembly throughout heat cycles you are correct Don't tighten them right up till they touch, just untill they are snug and equal around the hub Those of you with the hubsinks, are you tightening the nuts and bolts all the way down? Just installed mine...
by sketchism
Sep 24 2019 6:51pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

Has anybody have luck running the hub sinks ONLY, with NO FF or Statorade? people have and it does help, (if your magnet ring gets warm, the hubsinks will pull more heat out regardless) but they work so well together i wouldnt recommend doing one without the other, unless you have a specific reason...
by sketchism
Sep 24 2019 6:43pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

Ive had a few enquiries for one-off versions of the hubsinks for non standard motors and now i have my CNC back up and running ill do a small-run of billet Hubsinks the main enquiry i have is for the QS273, but i have been given 4 or 5 different curcumfrences of the magnet ring, i would be hesitant ...
by sketchism
Jun 29 2019 8:00pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

haha absolutely awesome, i did similar but not as thorough to mine, and it was crazy how thick that paint was, almost a fill mm or more i would say, they really lay it on there! if you are chasing ultimate thermal coupling this would certainly give you one less thing between the hub and the sink! ju...
by sketchism
Jun 07 2019 11:34pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

Hey mate yep that's my tooling company i have them up there as well as http://www.hubsink.com - ebay does take a bigger fee but it seems sometimes people find it there before the website the only way to do that would be to go around with a coping saw and trim them down, i have done it once before to...
by sketchism
May 26 2019 5:09pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

you shouldn't need to pad it at all they should pull tight around your hub

do you have a photo?
by sketchism
Feb 09 2019 7:55pm
Forum: E-Bike Technical
Topic: Electric CRF 250 motocross build Mobipus 72600
Replies: 2
Views: 385

Re: Electric CRF 250 motocross build Mobipus 72600

hey mate nice choice ive done the same bike and controller with an Mforce motor


Mobipus pass is Mobipus-88888888

by sketchism
Feb 09 2019 5:54pm
Forum: E-Bike Technical
Topic: Automatic Wheelie control / Launch control module Beta testing
Replies: 16
Views: 1112

Re: Automatic Wheelie control / Launch control module Beta testing

interesting you mention the death bike because without using launch control (low angle) mode when I was doing my 0-100 runs I was mousetrapping the throttle and backing off too much as the front came up, then letting it down too much and losing speed to get the nose to come back down etc with the bo...
by sketchism
Feb 09 2019 11:56am
Forum: E-Bike Technical
Topic: Automatic Wheelie control / Launch control module Beta testing
Replies: 16
Views: 1112

Re: Automatic Wheelie control / Launch control module Beta testing

Hi izeman!

it should definitely work with any drive type as long as you can tap your three throttle wires all good?
by sketchism
Feb 09 2019 6:36am
Forum: E-Bike Technical
Topic: Automatic Wheelie control / Launch control module Beta testing
Replies: 16
Views: 1112

Re: Automatic Wheelie control / Launch control module Beta testing

apart from the fun side of it i haven't really made it clear that i would also it was initially designed for saftey, to stop flipping accidentally which has injured a few people on powerful ebikes, it wont entirely stop whisky throttle but it can be set to stop the front coming up past X angle
by sketchism
Feb 09 2019 5:04am
Forum: E-Bike Technical
Topic: Automatic Wheelie control / Launch control module Beta testing
Replies: 16
Views: 1112

Automatic Wheelie control / Launch control module Beta testing

I've been quiet but I've been busy since HubSinks! they are related though because as i kept adding power, i needed more control The 4th version of the Wheelie Box / Launch Control Module is done after almost 2 years, its fully potted and shock/waterproof now and i'm ready to start organising public...
by sketchism
Feb 09 2019 4:55am
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

How did you go once you got the FF in there ive been away so apologies for the late reply but yep, the FF is very important and doubles the effectiveness of the Hubsink alone! Haha. I don’t know what feral fluid is either. All jokes aside, thank you very much for your replies. I just got the hub sin...
by sketchism
Aug 22 2018 7:12pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

i've been doing some more seat of the pants testing with the Hubsinks and statorade and i've found when first installing the statorade putting the whole 10ML in seems to be the sweet spot (at least for the QS205 and MXUS motors) Some makes its way into the nooks and crannys, and seems to leave the m...
by sketchism
Aug 22 2018 6:50pm
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2099
Views: 370124

Re: Definitive Tests on the Heating and Cooling of Hub Motors

Electric God, the weight of the hubsink is not an issue in my eyes. I mean for a heavy hub motor the weight of the hub sink is negotiable at best. If you worry put the hub on the lathe and shave down the back iron a millimeter or so before attaching. Now your hub is lighter even with the hubsink an...
by sketchism
Aug 22 2018 6:46pm
Forum: Battery Technology
Topic: Why not to try revive abused cells!
Replies: 7
Views: 617

Re: Why not to try revive abused cells!

haha yeah lucky i heard it making expanding noises, like a creaky chair
by sketchism
Aug 16 2018 8:26pm
Forum: Battery Technology
Topic: Why not to try revive abused cells!
Replies: 7
Views: 617

Why not to try revive abused cells!

My neighbour borrowed one of my 'in progress' bikes while i was away, before it was finished, rideable but not finished, no LVC set and nothing calibrated. I got a msg saying the bike is dead and wont ride anymore, i asked what voltage the CA says and he said 40v... it was a 96v pack The cells that ...
by sketchism
Feb 03 2018 12:23am
Forum: E-Bike Technical
Topic: What can be done about motor overheating?
Replies: 59
Views: 8669

Re: What can be done about motor overheating?

someone just linked me to this thread and it made me rememeber how far we've come in such a short time with HubSinks and Statorade!
by sketchism
Jan 17 2018 5:59pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Hub Motor cooling solution - HUBSINK OFFICIAL THREAD

I put these on about 9 months ago. They were fun to install and very well crafted - and with Statorade / Ferrofluid the overheat issues on my commute have disappeared. Hope that this pictorial story-line of the installation is helpful/entertaining. haha thanks man, as soon as i saw the image with t...
by sketchism
Dec 30 2017 6:34am
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Hub Motor cooling solution - HUBSINK OFFICIAL THREAD

Hey mate I've never unwrapped the actual syringe but yep thats correct, each piece should have around .3ml on it and spread as thin as possible
by sketchism
Dec 18 2017 6:28am
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13562

Re: Hub Motor cooling solution - HUBSINK OFFICIAL THREAD

hey Andrew your order went out in todays (monday morning) post so say 7 days to be safe
by sketchism
Dec 18 2017 4:44am
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2099
Views: 370124

Re: off topic

John Bozi wrote:
Dec 17 2017 8:48am
My next goal is to work out how not to fry my brakes. My last ride scared me.


we have a solution man, should have a beta test ready for you soon!

goes with the hubsinks now you can ride longer brake fade is a real problem, same as me and matt
by sketchism
Dec 16 2017 6:12pm
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2099
Views: 370124

Re: Definite happiness with Cooling of Hub Motors

John Bozi wrote:
Oct 14 2017 2:49pm
Now all I do is ride with an occasional beer stop.

JB

cheers!
haha isn't that the ultimate goal!
you're right thought i have barely thought about cooling since ff and hubsinks, i wear out way before the bike does now lol