Search found 310 matches

by Kodin
Sep 03 2019 3:25am
Forum: E-Bike Build Threads / Photos & Video
Topic: Tank Bike - (Previously: Yet Another Genesis)
Replies: 28
Views: 5725

Re: Tank Bike - (Previously: Yet Another Genesis)

( ree's softly in the distance ) For what it's worth, I now have a working electric skateboard! This was a one-month build, as a limitation for myself, and I completed it beginning to end within that timeframe. A month after that, I've actually learned how to ride, and am now mostly successful at c...
by Kodin
Jul 16 2019 12:51am
Forum: Battery Technology
Topic: Solderless weldless 36V and 74V batteries could do over 200A
Replies: 54
Views: 2725

Re: Solderless weldless 36V and 74V batteries could do over 200A

I'll likely be buying them in batches of 100 cells over the course of a couple months. While cycle life will be different, I'm hoping it won't be different enough to cause too many problems once fully "stocked"
by Kodin
Jul 09 2019 5:13pm
Forum: Battery Technology
Topic: Solderless weldless 36V and 74V batteries could do over 200A
Replies: 54
Views: 2725

Re: Solderless weldless 36V and 74V batteries could do over 200A

Any issues with using say an 8P module with say, 4P worth of cells and upgrading to higher cell counts as more disposable money is available? Will tension stay the same for the most part?
by Kodin
Apr 09 2019 7:42pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Thin-lamination outrunners?
Replies: 0
Views: 227

Thin-lamination outrunners?

So I've been doing a lot of research into components to strap to my longboard and asked a lot of ebay/aliexpress sellers for lamination thickness specs. So far only one aliexpress seller was able to provide any info, and it looks like the "fatjay" brand outrunners (at least in 63xx sizes) use 0.35mm...
by Kodin
Apr 09 2019 7:08pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Tank Bike - (Previously: Yet Another Genesis)
Replies: 28
Views: 5725

Re: Tank Bike - (Previously: Yet Another Genesis)

neptronix wrote:
Apr 09 2019 10:31am
99% done.. are you tellin' me you still don't have a working ebike that rides? oh man!
It'll be done when I finish it. You can't rush OCD. :P
by Kodin
Apr 08 2019 5:22am
Forum: E-Bike Build Threads / Photos & Video
Topic: Tank Bike - (Previously: Yet Another Genesis)
Replies: 28
Views: 5725

Re: Tank Bike - (Previously: Yet Another Genesis)

So far?...well done, sir...well done! Thank you sir! It's an honor to hear that from you. In retrospect, I'd have been far happier by now building a ready-made but flawed (in my mind) kit and incrementally upgrading rather than obsessively over-engineering everything to have orders of magnitude too...
by Kodin
Apr 08 2019 5:08am
Forum: E-Bike Build Threads / Photos & Video
Topic: Tank Bike - (Previously: Yet Another Genesis)
Replies: 28
Views: 5725

Re: Tank Bike - (Previously: Yet Another Genesis)

Whoops! Forgot a picture of the bike sitting on two wheels.
by Kodin
Apr 06 2019 10:22pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Tank Bike - (Previously: Yet Another Genesis)
Replies: 28
Views: 5725

Re: Tank Bike - (Previously: Yet Another Genesis)

SOON! The bike is 99% built but I haven't gotten around to wiring up phase and hall wires, mounting the controller, programming, or buying a battery. The lack of battery is the main impediment, and like many stalled projects, revolves around lack of funds. In the meantime, I may throw together an el...
by Kodin
Apr 24 2018 1:07pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Tank Bike - (Previously: Yet Another Genesis)
Replies: 28
Views: 5725

Re: YAG - (Yet Another Genesis)

Well, it's been years, and I now have the problem that time is more valuable than money. So I've purchased a "Tank" ebike frame, (Similar price class to the EEB frame, though heavier by a noticeable amount,) and am currently modifying it for my tastes. (Replacing swing arm rubber bonded bushings wit...
by Kodin
Apr 24 2018 12:41pm
Forum: E-Bike Technical
Topic: IP67-spec throttles?
Replies: 3
Views: 363

IP67-spec throttles?

Question - Most of the electric throttle solutions I've seen are pretty cheaply made, and if left in heavy rain will likely saturate. Does anyone make a fully waterproof sealed throttle assembly?
by Kodin
Jan 13 2017 8:30pm
Forum: Items for Sale - New
Topic: Convert your mechanical disc to hydraulic discs!!
Replies: 62
Views: 4165

Re: Convert your mechanical disc to hydraulic discs!!

I won't argue with you there. :P I think it was named DOT5.1 for marketing purposes. Fun part about DOT3 is many manufacturers now make DOT3 with DOT4 specs anyway, as it doesn't make much sense to have two separate fluid production lines.
by Kodin
Jan 13 2017 5:13pm
Forum: Motor Technology
Topic: Why do hub motors use the older freewheel hub?
Replies: 18
Views: 1820

Re: Why do hub motors use the older freewheel hub?

Also you lose power efficiency below 13t sprockets. 11t is nice, but does make you have to pedal harder.
by Kodin
Jan 13 2017 2:02pm
Forum: Motor Technology
Topic: Why do hub motors use the older freewheel hub?
Replies: 18
Views: 1820

Re: Why do hub motors use the older freewheel hub?

The whole point of more gears is added efficiency when accelerating. Just like a car with 3 gears vs. one with 6+; the one with 6 gears will get better gas milage in-town where there are lots of stops and starts. A car with a 3-speed vs. a 6 speed will do the same gas milage in top gear, but during ...
by Kodin
Jan 13 2017 1:39pm
Forum: Items for Sale - New
Topic: Convert your mechanical disc to hydraulic discs!!
Replies: 62
Views: 4165

Re: Convert your mechanical disc to hydraulic discs!!

OK guys... so first off - EVERYONE HAS THEIR OWN PREFERENCE Regarding modulation - Chalo has a point, however that point is being interpreted differently by every person in this thread, including Chalo himself. What I gather he was trying to refer to regarding modulation and force magnification: pul...
by Kodin
Oct 13 2016 8:15am
Forum: General Discussion
Topic: Amberwolf gratitude thread
Replies: 51
Views: 4167

Re: Amberwolf gratitude thread

Thank you for your efforts. This forum has been a great resource and one of the best aspects was that I didn't see any spam and very few off topic postings. I hope you have something satisfying planned for all that extra time you'll have now. Take care.
by Kodin
Sep 24 2016 4:04pm
Forum: Items for Sale - New
Topic: upgrade Axle set for MXUS 3000 V2
Replies: 87
Views: 11515

Re: upgrade Axle set for MXUS 3000 V2

If you were going to do gas discharge, helium has 2-3 times the heat conduction of CO2... It's also 3-4 times more expensive though.
by Kodin
Sep 24 2016 3:55pm
Forum: Motor Technology
Topic: Why do hub motors use the older freewheel hub?
Replies: 18
Views: 1820

Re: Why do hub motors use the older freewheel hub?

Honestly the main reason is shaft diameter. Cassettes require bearings inside to support the clutch assembly and that eats into the maximum thickness the shaft can be coming out of the motor on the gear side. We're talking 14mm max, 15 if you want to modify the cassette to almost be dangerously thin...
by Kodin
Sep 24 2016 3:41pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1495
Views: 188784

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

ABritInNY For what it's worth, I'm confident in my tooling now to be able to cut a new axle. If you manage to snap another one, let me know. I have a "stock" shaft for reference, though it's designed for the larger (undriven) side cover with round brake rotor mount. Upside is it's thicker and uses a...
by Kodin
Aug 07 2016 2:51pm
Forum: Items for Sale - New
Topic: upgrade Axle set for MXUS 3000 V2
Replies: 87
Views: 11515

Re: upgrade Axle set for MXUS 3000 V2

Depends on if the bearings are 2RS or not; either way, you can order seals for any diameter; measure the innner diameter of the case and the shaft diameter where the seal sits then look online for seals that match those inner/outer diameters. Typically they are called oil seals. Also, one of the guy...
by Kodin
Jul 15 2016 3:07pm
Forum: Motor Technology
Topic: Ferrite as a stator material?
Replies: 20
Views: 2440

Ferrite as a stator material?

Just curious, (and it's probably been asked before,) why is ferrite not used more often as a stator core material? For that matter, why not cast a composite out of epoxy or something that has the right ratio of iron and other materials required rather than cut super-thin laminate stacks and glue the...
by Kodin
May 24 2016 2:26pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1495
Views: 188784

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

THANK YOU for the clarification; I've been saying this for a while, but no one ever listens to me, and there's always more newbies to add comments. The other fun variable is some manufacturers use different size wire for different windings, so some windings can take more current-per-wire before over...
by Kodin
May 24 2016 2:01pm
Forum: Items for Sale - New
Topic: upgrade Axle set for MXUS 3000 V2
Replies: 87
Views: 11515

Re: upgrade Axle set for MXUS 3000 V2

I like the idea, but they are much more expensive. A pair of the narrower bearings are wider in depth, but still cheaper. Just one . its twice better . Understood, though availability of this specific bearing is scarce in my part of the world. I WOULD like to use that model of bearing had I started...
by Kodin
May 23 2016 4:52pm
Forum: Items for Sale - New
Topic: upgrade Axle set for MXUS 3000 V2
Replies: 87
Views: 11515

Re: upgrade Axle set for MXUS 3000 V2

I like the idea, but they are much more expensive. A pair of the narrower bearings are wider in depth, but still cheaper.
by Kodin
May 23 2016 2:23pm
Forum: Items for Sale - New
Topic: upgrade Axle set for MXUS 3000 V2
Replies: 87
Views: 11515

Re: upgrade Axle set for MXUS 3000 V2

I'd say if you want a sealed motor use some ferrofluid. Almost as good of cooling performance as venting. I have a full 10ml tube of it if you'd like to use some. It's the synthetic version rather than the ester version. Got it from Justin during the first sales batch. I know you're local to Portlan...
by Kodin
May 23 2016 12:43am
Forum: Items for Sale - New
Topic: upgrade Axle set for MXUS 3000 V2
Replies: 87
Views: 11515

Re: upgrade Axle set for MXUS 3000 V2

Going to try it without keys first to see if the taper-locks can hold as-is. That'd be the easiest. They are rated for pretty decently high torques un-keyed... Also, I want to simplify machining. Not having to make flats or threads speeds up build time by far. Yes the taper-lock bushings are MAJOR o...