Search found 497 matches

by dozentrio
Oct 28 2019 10:41am
Forum: E-Bike General Discussion
Topic: Home-Built Ebike - Swiss Police Suspect Drugs!
Replies: 32
Views: 3108

Home-Built Ebike - Swiss Police Suspect Drugs!

https://m.20min.ch/schweiz/zuerich/stor ... s-14440938

google translate does a decent job on this if you prefer English. The article mentions he was going up to 45 kph :D
by dozentrio
May 18 2018 1:00pm
Forum: Battery Technology
Topic: Best battery for my flying bike?
Replies: 9
Views: 855

Re: Best battery for my flying bike?

Bike which flies, through the air!

Yes, they're high power requirements. That's why I can't use Multistar, unless I get way more of them than I actually want.

So where can I find a 3 kWh EV battery that can do 35 kw continuous?
by dozentrio
May 18 2018 10:56am
Forum: Battery Technology
Topic: Best battery for my flying bike?
Replies: 9
Views: 855

Best battery for my flying bike?

Hey guys, I've been trying to find a good solution for my flying car battery and honestly can't make up my mind. I don't like to ask for help when I know the information is out there, but hopefully you guys can weigh in. This is not something I can afford to get wrong :D Requirements: -3 to 5 kWh -9...
by dozentrio
Apr 13 2018 1:53pm
Forum: Items Wanted
Topic: Meanwell S-350-24 or 48 volt DC power supply
Replies: 6
Views: 862

Meanwell S-350-24 or 48 volt DC power supply

I need to replace my Meanwell bulk charger and can't find any good sources for the old easy to mod (R33 mod) DC power supplies. Anyone have any of these or know a source?
by dozentrio
Aug 17 2017 10:46am
Forum: E-Bike Technical
Topic: How much regen power is possible?
Replies: 6
Views: 812

How much regen power is possible?

Hi guys, I've tried doing some searching to get an answer to this without much luck. I want to know what the maximum power people are getting in regen from their motor controllers. I know there must be some limits-- overheating of controller fets, overheating of motor... Assuming you can get your mo...
by dozentrio
Apr 13 2017 6:13pm
Forum: Items for Sale - Used
Topic: For Sale: Nissan Leaf Battery modules in FLORIDA :Edit
Replies: 38
Views: 4169

Re: For Sale: Nissan Leaf Battery modules in FLORIDA :Edit

Sorry for my ignorance but, what is the discharge capability of these modules? I am considering 10 or 12 in series for a motorcycle conversion.
*how much current can they provide, peak/continuous...
by dozentrio
Jan 22 2017 12:31pm
Forum: E-Bike General Discussion
Topic: DIY Heated Jacket
Replies: 52
Views: 7346

Re: DIY Heated Jacket

Put them in pairs of 2. Two in series and at 15v (4s) they are still quite warm, but not uncomfortably so. You'll have to figure something out for your fifth one though :D
by dozentrio
Jan 20 2017 7:19pm
Forum: E-Bike Technical
Topic: Extra space for hub phases or cooling
Replies: 4
Views: 765

Extra space for hub phases or cooling

It seems that there's been significant effort put into getting more stuff through the axle of hub motors. Thicker phase wires, mostly, but also potentially liquid cooling. Most efforts focus on machining out the axle. Why not use a larger bearing and modify the side-cover so the bearing will fit? Th...
by dozentrio
Jan 09 2017 1:17pm
Forum: E-Bike Technical
Topic: Generator from brushless motor?
Replies: 2
Views: 502

Re: Generator from brushless motor?

My output RPM can be controlled. I'm saying I can pick a value between 6000 to 8000 RPM and stay relatively close to that. Probably it would be 8000 RPM to maximize power... And yes, I think the frequency will be a big issue. If I'm using an RC motor with something like 10+ poles, at 8000 RPM, I get...
by dozentrio
Jan 08 2017 5:22pm
Forum: E-Bike Technical
Topic: Generator from brushless motor?
Replies: 2
Views: 502

Generator from brushless motor?

Hi guys, I need some help and advice from people with a better grasp on electronics than I have. I'm trying to use a 3-phase brushless motor (RC motor) as a generator for a series-hybrid vehicle and don't know what kind of electronics are best suited for my purpose. I want to use the RC motor to kee...
by dozentrio
Nov 15 2016 10:50am
Forum: E-Bike General Discussion
Topic: DIY Heated Jacket
Replies: 52
Views: 7346

Re: DIY Heated Jacket

I carried my main bike battery in my backpack for a while. At first it was SLA too. I quickly learned that was a bad idea. Even a LiPo pack quickly gets painful. The convenience isn't worth it, definitely at least sling your battery over the front handle-bars in some kind of baggage carrier until yo...
by dozentrio
Nov 07 2016 10:47pm
Forum: E-Bike General Discussion
Topic: Critique this performance velomobile idea
Replies: 184
Views: 29187

Re: Critique this performance velomobile idea

The guy who runs this channel http://www.youtube.com/user/ChrisyLuxembourg aka LOWRACER built a DIY carbon fully faired forced-air cooled hub motor trike. With suspension? I can't remember. But he took down the videos of it. Very sad. I suspect the legality of it was in question. Anyway, maybe you c...
by dozentrio
Nov 07 2016 10:17pm
Forum: E-Bike General Discussion
Topic: What's a good e bike headlight?
Replies: 250
Views: 29877

Re: What's a good e bike headlight?

I have ordered this http://www.ebay.com/itm/Black-Motorcycle-Head-Light-Dual-Sport-for-Ducati-Street-Fighter-Dirtbike-Custom-/360670816180 http://i.ebayimg.com/images/g/~PgAAMXQkcZRkrAV/s-l500.jpg I'll be replacing the two centre bulbs with 12v 3000 lumen (35 watt) LED bulbs. I'll report back on the...
by dozentrio
Nov 07 2016 10:10pm
Forum: E-Bike General Discussion
Topic: Have you owned and off roaded both hub and mid drive?
Replies: 83
Views: 7943

Re: Have you owned and off roaded both hub and mid drive?

My first build was a mid-drive based on a Turnigy 80-100 (130 kv). I had a two stage gear reduction, ran on 50v and 120A (max). I built it on an old but high-quality cross-country mountain bike frame. 5 inches travel in the rear, 3 ish in the front. All builds after that were hub motor bikes because...
by dozentrio
Nov 07 2016 3:31pm
Forum: E-Bike General Discussion
Topic: DIY Heated Jacket
Replies: 52
Views: 7346

Re: DIY Heated Jacket

cycleops612 wrote: (op has a motorbike, 12v), it seems preferable to yet another goddam battery to; buy, charge and fret about.
Actually, here is a photo of my bike. I guess my original post is misleading. It's a 100v Crystalyte 5403 :) I cruise at about 90 kph though so it gets fairly cold.
by dozentrio
Nov 05 2016 5:26pm
Forum: E-Bike General Discussion
Topic: DIY Heated Jacket
Replies: 52
Views: 7346

Re: DIY Heated Jacket

Yeah, I heard about the carbon fiber ribbon right after I ordered these heating pads and the nichrome wire. My friend is going to try something similar using the carbon fiber ribbon. We'll see how it turns out. It does seem simpler and easier that way.
by dozentrio
Nov 03 2016 7:29pm
Forum: E-Bike General Discussion
Topic: DIY Heated Jacket
Replies: 52
Views: 7346

DIY Heated Jacket

It's getting colder here and I plan to try to ride my bike through the winter. I do a short 10-15 minute commute to my uni and I will need something to keep me a bit warmer. My motorcycle jacket isn't insulated very well, but I like the safety aspect of it. Rather than buying a whole new heated jack...
by dozentrio
Nov 01 2016 12:13pm
Forum: E-Bike Technical
Topic: XPD: open-source keywin e-bike lab replacement
Replies: 601
Views: 150771

Re: XPD: open-source keywin e-bike lab replacement

it only works with linux otherwise you need to use the other software. You can get it from powervelocity website I believe. You can also use the android app but you'll need to install a bluetooth programming module in your controller. Powervelocity sells them. I think you could probably make one too...
by dozentrio
Oct 13 2016 9:54am
Forum: General Discussion
Topic: Amberwolf gratitude thread
Replies: 51
Views: 4766

Re: Amberwolf gratitude thread

I haven't really been active in ages, but I know the name Amberwolf and anyone who volunteers their time like this has my respect and gratitude. Sorry to see you go!
by dozentrio
Oct 12 2016 7:02pm
Forum: E-Bike Technical
Topic: XPD: open-source keywin e-bike lab replacement
Replies: 601
Views: 150771

Re: XPD: open-source keywin e-bike lab replacement

according to the commit comments version 4.0 isn't working yet? definitely, not for windows.
by dozentrio
Sep 28 2016 8:42am
Forum: E-Bike General Discussion
Topic: 150 volt 12 FET 4115 Crystalyte 5403 Kona Stinky
Replies: 4
Views: 666

Re: 150 volt 12 FET 4115 Crystalyte 5403 Kona Stinky

The fastest I got was 90 kph down a mild hill. Not very impressive. I agree, I think this will work better with 4110 fets. I'm fixing a 24 fet I have, and ordered a 18 fet sinewave controller. Down the road, I will experiment with TO-247 size fets. Probably a 12 fet version infineon board. I will pe...
by dozentrio
Sep 27 2016 5:32pm
Forum: E-Bike General Discussion
Topic: 150 volt 12 FET 4115 Crystalyte 5403 Kona Stinky
Replies: 4
Views: 666

Re: 150 volt 12 FET 4115 Crystalyte 5403 Kona Stinky

Thanks for the input MadRhino, Actually I am using a 26'' wheel. My goal isn't really for torque and acceleration, but to have a reliable commuter. Although now that it's built I'm feeling the need for more power :D Another reason I got a 5403 is because it's what was available. I may build my 24 fe...
by dozentrio
Sep 27 2016 3:37pm
Forum: E-Bike General Discussion
Topic: 150 volt 12 FET 4115 Crystalyte 5403 Kona Stinky
Replies: 4
Views: 666

150 volt 12 FET 4115 Crystalyte 5403 Kona Stinky

Hey guys, Just finished reassembling my bike with components as described in the title. I'd been riding it on the default (I presume... whatever came with the unpopulated controller board I got) parameters for a eb212 controller, but just now got a hold of a programmer cable. I set battery current t...
by dozentrio
Sep 27 2016 10:59am
Forum: E-Bike Technical
Topic: Programming cable for EB312 work on EB212?
Replies: 7
Views: 1253

Re: Programming cable for EB312 work on EB212?

I had this issue also. I had a lyen programming cable for programming eb3xx series boards. It was a single cable with a yellow jumper connecting pins 1 and 5 on the end. In other words, there was no adapter cable section on the end which converted a eb2xx programmer cable to work with eb3xx. This ca...
by dozentrio
Sep 26 2016 2:31pm
Forum: E-Bike Technical
Topic: 36V 250W Sine Wave Controller ZL36V-6GWS-14A
Replies: 6
Views: 2159

Re: 36V 250W Sine Wave Controller ZL36V-6GWS-14A

2 controllers, 1 to use and one to mod for MAXIMUM POWAH!

I don't know actually, but this is kind of an exciting thread. Can these perhaps be modified like we do with the 'standard' infineon controllers? Bigger caps, badder FETs, and we all enjoy the benefits of full sine-wave control?