Search found 965 matches

by Wheazel
Mar 27 2019 6:58pm
Forum: E-Bike Non-hub Motor Drives
Topic: Cargobike project. Very long john from chromo tubing
Replies: 140
Views: 26119

Re: Cargobike project. Very long john from chromo tubing

Front wheel is nowadays 24" in a 26" fork. After changing the steer head and adjusting the fork angle. Rear wheel is still 21" moped size. Have mostly been using the bike, up to something like 11000km now. It just works. But as with all projects that you do the first time, there are naturally points...
by Wheazel
Dec 04 2017 3:21am
Forum: Motor Technology
Topic: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+
Replies: 139
Views: 21535

Re: middrive motor, small and powerful -> Neu 8057/75 or??

Hi Madin88 If you go the beltdrive route, you can manufacture the large pulley from a metallic hub and spokes with a 3dprinted belttrack in segments depending on printersize. As there are so many teeth gripping on the large pulley, a properly made 3dprinted one out of abs/petg/ or even pla should wo...
by Wheazel
Sep 25 2017 4:18pm
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 577
Views: 91413

Re: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp

Hi Arlo Have been following your project from a distance. Congrats on the very good results! Got some questions about general ev-projects and the leafmotor, as you have been doing heavy diy and probably weighted most options. The power you have gotten from yours is well enough, but can that be achie...
by Wheazel
Sep 07 2017 9:35am
Forum: E-Bike Build Threads / Photos & Video
Topic: 120km/h long range full suspension 2wd foldable cargo bike
Replies: 6
Views: 2176

Re: 120km/h long range full suspension 2wd foldable cargo bi

Looks like you have improved the concept quite abit to suit your needs, have you thought about purposebuilding a bike for the equipment you use instad of strapping it on a bicycle frame? Should improve your concept even further and look more refined. How is the legal bit in France? What are you allo...
by Wheazel
Sep 06 2017 4:11am
Forum: E-Bike General Discussion
Topic: Is a fat bike good for Buffalo ny winters or a normal bike
Replies: 22
Views: 1872

Re: Is a fat bike good for Buffalo ny winters or a normal bi

Studded tyres (and I mean the best studded tyres that are available) is pretty much mandatory in my opinion if you want to reduce the risk of getting killed or injured in traffic during the winters here. Ice surfaces are more rule than exception, and large parts of the winter the temperature is vary...
by Wheazel
Sep 05 2017 1:54am
Forum: E-Bike General Discussion
Topic: Slowest Motor 1500watt max?
Replies: 49
Views: 4476

Re: Slowest Motor 1500watt max?

When I built my cargobike there was a lot of naysaying about switching from a revolt 120pro to a dd hub. I was unhappy with the efficiency I got with the revolt, so I ordered a Leaf 1500 motor(5T I think). This was in a 26" wheel and the bike has a 18s large capacity battery. I usually run with a 35...
by Wheazel
Sep 05 2017 1:09am
Forum: E-Bike General Discussion
Topic: 26 inch tire recommendations?
Replies: 13
Views: 1457

Re: 26 inch tire recommendations?

I think schwalbe big ben's are nice as well. I am running one of those in the front of my cargobike (the 2.15" version). I wanna recall they come on 2.15 and 2.35" widths. I wanted something more "baloony" than the marathon plus. Did run one 2.35" in the rear as well until I changed to moped rim. Wo...
by Wheazel
Aug 29 2017 10:18am
Forum: E-Bike Non-hub Motor Drives
Topic: Electrify my commuter
Replies: 8
Views: 1064

Re: Electrify my commuter

Agree with wineboyrider, especially a DD hub will need the least maintenance. If your needs are road commuting, I would go with a ddhub any day of the week. I have done a few rc builds etc, but never had a bafang or similar. Regardless, it is always more mainenance and trouble with reduction stages ...
by Wheazel
Aug 29 2017 5:52am
Forum: E-Bike Non-hub Motor Drives
Topic: Cargobike project. Very long john from chromo tubing
Replies: 140
Views: 26119

Re: Cargobike project. Very long john from chromo tubing

Planning to do an update on the bike very soon. I have just been riding. It has been working wonders. Not as many km's this summer as previous due to shorter commute distance. Think I am in the 8700km region now. Unfortunately shitbucket (photobucket) decided that linking pictures was no longer ok u...
by Wheazel
Aug 26 2017 1:48pm
Forum: Motor Technology
Topic: Idiots guide to water cooled mid motor making
Replies: 110
Views: 13293

Re: Revolt RV120 rotor remake

Yeah, no problem!
by Wheazel
Aug 26 2017 3:10am
Forum: Motor Technology
Topic: Idiots guide to water cooled mid motor making
Replies: 110
Views: 13293

Re: Revolt RV120 rotor remake

I was in a hurry and printed those on another printer with not the most level platform, they were reasonably ok, but you might need to grind som imperfections off as the settings were not perfect. Been on vacation for two weeks now and will be home tomorrow. I hope the parts can be used. Otherwise t...
by Wheazel
Jul 16 2017 4:04pm
Forum: Motor Technology
Topic: Idiots guide to water cooled mid motor making
Replies: 110
Views: 13293

Re: Revolt RV120 rotor remake

Yeah I wouldn't base my design on any of the things Mr Laimer did to his motor. I've seen a video where the motor explode at full rpm. That was an earlier designed and intentionally exploded to see how fast it would spin before it broke. From what I have seen of Laimers work, he seem knowledgeable....
by Wheazel
Jul 16 2017 12:39pm
Forum: Motor Technology
Topic: Idiots guide to water cooled mid motor making
Replies: 110
Views: 13293

Re: Revolt RV120 rotor remake

Just wanted to add Christoph Laimers interesting work to this discussion. It features a halbach array.
https://www.youtube.com/watch?v=NFvMC3l ... e=youtu.be
by Wheazel
Jul 14 2017 10:00am
Forum: Motor Technology
Topic: Idiots guide to water cooled mid motor making
Replies: 110
Views: 13293

Re: Revolt RV120 rotor remake

I intend to make the prints this weekend. Will be fun to see how this comes together.
by Wheazel
Jul 12 2017 3:48pm
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

Cool ill have look on em.
by Wheazel
Jul 11 2017 12:37pm
Forum: E-Bike General Discussion
Topic: Bike plans 4 summer
Replies: 44
Views: 5044

Re: Bike plans 4 summer

Why so thick spokes? Thick spokes in a weak rim will result in insufficient spoke tension and you will break spokes from fatigue in the "spoke-elbow" after some time. Reason is that a spoke that isn't tensioned enough will lose the positive tension momentarily during different riding conditions. For...
by Wheazel
Jul 10 2017 5:47am
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

It is a bit rusty, but ive polished it once so it is not that bad now. Not in use atm, it sat on my retired winter tilt-trike.
Printing a plug with the right measurement wouldn't be a problem, at least if I can have more than 1 try :D.
by Wheazel
Jul 09 2017 9:38am
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

The rotor on my old rv100 is not stainless, my rv120pro might be.
by Wheazel
Jul 07 2017 9:32am
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

@Miles, what would be your educated guess for improvement by segmenting the magnets?
What magnitude of change can be expected under the current circumstances with larsb's revolt?
by Wheazel
Jul 07 2017 4:03am
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

Nylon print with fiberglass reinforcement? The mark 2 can do 320 mm x 132 mm x 154 mm, which should allow for a theoretical tube for the revolt to be built.
by Wheazel
Jul 07 2017 1:16am
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

What a shame that the rotor gives such high losses. But surely explains the high loses at no load. I think the magnets + jacket is a small job compared to what you already have done. As usual there is more to it than first expected, I recognize this from many projects... Anyhow it has been a pleasur...
by Wheazel
Jul 04 2017 6:54am
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

Too thick laminations the culprit?
by Wheazel
Jun 20 2017 1:18pm
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

Oh boy! Super cool project hype! Can not wait for results.
Closely watching this one and amazingdiyproject's manned multirotor. (check yt if interested)
He happen to be swedish too.
by Wheazel
Jun 15 2017 3:48pm
Forum: Motor Technology
Topic: Idiots guide to rewinding Revolt 120 pro
Replies: 295
Views: 33225

Re: Idiots guide to rewinding Revolt 120 pro

Good work!
Going faster is no problem, you can't kill science :D
On a serious note, I am curious about potential efficiency gains from varied use.