Search found 1116 matches

by j bjork
Oct 16 2021 2:41pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Yamaha YZF250F
Replies: 204
Views: 14129

Re: Yamaha YZF250F

Thank you :) It is a bit problematic to put the controller where the radiator was, it is both thicker and wider: https://i.imgur.com/Z63eSVC.jpg It would mean a pretty big and heavy brick on one side, sticking out pretty much. I did consider double, smaller controllers to be able to do that. And the...
by j bjork
Oct 16 2021 3:38am
Forum: EScooter/EMotorcycle Build Threads
Topic: Yamaha YZF250F
Replies: 204
Views: 14129

Re: Yamaha YZF250F

Bottom bracket for the battery:

Image

Image

Image

It did shrink a little when I finished up the welding, so it got a bit to tight.
But with a little massage it is getting there.
by j bjork
Oct 06 2021 1:42pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Yamaha YZF250F
Replies: 204
Views: 14129

Re: Yamaha YZF250F

I have worked a lot on the bike, there just isn't that much result to show.. https://i.imgur.com/o7gPg89.jpg I fixed the finish on the upper part of the battery box. It isn't perfect, because I took too much with a 240 paper. I didn't have anything between 240 and 1000.. I can take more with 1000, b...
by j bjork
Oct 01 2021 3:42pm
Forum: Motor Technology
Topic: Nanjing far driver controllers
Replies: 32
Views: 2712

Re: Nanjing far driver controllers

I got a couple of ND72330 rated @ 150A and I would say they work quite well - Very easy to configure. They provide an auto-learn features to accelerate the initial process. So far so good. For the price (approx. 150 euro/each) it's a fair product. Interesting. Do you use the phone app or the comput...
by j bjork
Sep 30 2021 11:19am
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 250
Views: 45274

Re: KTM 200 exc goes electric

I will see the dentist soon, I will ask them to check then.
The doctors think it is because of nerve damage higher up that effects the jaw and then also the teeth.
by j bjork
Sep 29 2021 12:53pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 250
Views: 45274

Re: KTM 200 exc goes electric

Thanks guys :) The pain is not too bad now actually. It hurt a lot when I crashed, but it went mostly numb after a while. It was difficult to sleep at first, I could almost only lay on one side. The evening after they broke the nose back was rather painful, but that was actually the only time I took...
by j bjork
Sep 26 2021 12:19pm
Forum: EScooters/EMotorcycles
Topic: Gen4 size 6 and 1304 help please
Replies: 3
Views: 164

Re: Gen4 size 6 and 1304 help please

If the question was clearer it would be a lot easier for someone who knows sevcons to answer.
You want the vehicle to cut out at 30mph, but it dosent happen?
by j bjork
Sep 26 2021 7:42am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1568
Views: 194064

Re: Votol EM-100 & EM-150 controllers

I dont know about the settings for the newer kind of controllers, but I think you still are supposed to choose "surface-mount" in "motor type" on page 3 when that is the type you have.
by j bjork
Sep 25 2021 3:12pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 250
Views: 45274

Re: KTM 200 exc goes electric

The gearing sure made a difference. I didn't notice any lost power at higher speeds either, so there might still be gains to gear it down more. However I had a nasty crash :( The classic "whiskey throttle" I think you call it in English? Wrong grip on the throttle so I couldn't let go, and...
by j bjork
Sep 21 2021 8:05am
Forum: EBike Technical
Topic: Eaton APR48-3G 1.8kW Light Compact Charger PSU
Replies: 234
Views: 49985

Re: Eaton APR48-3G 1.8kW Light Compact Charger PSU

izeman wrote:
Sep 21 2021 4:16am
Has anyone done the current mod from Russian forum by now? I need current adjustable on the fly with a potentiometer and want to make sure that I install it correctly :)
Sounds very interesting, can you link to it?
by j bjork
Sep 20 2021 10:10am
Forum: General Discussion
Topic: madin88 has left us ... forever :(
Replies: 1
Views: 520

Re: madin88 has left us ... forever :(

Yes, it is sad. You always wonder when someone in that age without known illness passes away. I dont know if he was depressed or anything, or if it was some sort of accident or whatever. Alex posted about it a month ago in madins motor tread: https://endless-sphere.com/forums/viewtopic.php?f=30&...
by j bjork
Sep 18 2021 7:30am
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 250
Views: 45274

Re: KTM 200 exc goes electric

Finally I got my watercut 10tooth sprockets. They were supposed to be 8mm thick, but I got 10mm. https://i.imgur.com/bmwKde7.jpg After a little work in the lathe I was able to make something that fits, and a little extra grip on the splines too :thumb: So I went from 8,18-1 to 7,82-1 when I changed ...
by j bjork
Sep 18 2021 7:16am
Forum: EScooter/EMotorcycle Build Threads
Topic: Yamaha YZF250F
Replies: 204
Views: 14129

Re: Yamaha YZF250F

I think it is about time for an update.. There isn't a lot to show, I am just struggling to fit everything in the battery box: https://i.imgur.com/Nm28TGi.jpg After a lot of trying and adjusting where I thought the problem was, I realized I could just put clay on the interesting places :roll: I wish...
by j bjork
Sep 17 2021 12:09pm
Forum: EScooter/EMotorcycle Build Threads
Topic: My Chinese E-Scooter
Replies: 60
Views: 14347

Re: My Chinese E-Scooter

I think the darker green would be nice :)
by j bjork
Sep 14 2021 12:15pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-200 Controller
Replies: 75
Views: 13446

Re: Votol EM-200 Controller

I don't think you can do much about the power in different modes, from what I remember it is just about the speed. I haven't bothered using them myself, so I might have missed something. But I am pretty sure that's how it is. What you can do is lower the battery amps for the normal modes, and set it...
by j bjork
Sep 09 2021 11:42am
Forum: EScooter/EMotorcycle Build Threads
Topic: My Chinese E-Scooter
Replies: 60
Views: 14347

Re: My Chinese E-Scooter

Nice to see you back, it has been a little quiet after your accident :wink:
by j bjork
Sep 09 2021 11:05am
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 250
Views: 45274

Re: KTM 200 exc goes electric

I have about 10:1 and top speed of 75 kmh with a lot of field weakning ofc. I think 9:1 would be perfect. Thanks for the info. I thought something like that too, but started to wonder when I saw another member running about 12:1. Do you feel that you are loosing power when you get up to higher spee...
by j bjork
Sep 09 2021 4:59am
Forum: Battery Technology
Topic: Help Paralleling Lipos
Replies: 6
Views: 246

Re: Help Paralleling Lipos

I used a server psu trough the nucular controller.
So I set the voltage I want in the nuc.
But just use any charger you want that does the job, or is it something else you want that I am missing?
Just charge like any other lithium pack.
by j bjork
Sep 08 2021 12:05pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 250
Views: 45274

Re: KTM 200 exc goes electric

A little film from two weeks ago. Katrineholm, I have never ridden that track before. https://youtu.be/4zSg559hKk0 The first one I pass is my (usually faster) friend :) It was just to hit is hard I could after that, and hope he wouldnt catch up.. He claimed he didnt feel well, and quit for the day a...
by j bjork
Sep 08 2021 7:42am
Forum: Battery Technology
Topic: Help Paralleling Lipos
Replies: 6
Views: 246

Re: Help Paralleling Lipos

I have done it before without problems. If your cells are ok you dont need thick parallel connections.
20s3p on the "bomber"
by j bjork
Sep 07 2021 11:37am
Forum: EScooters/EMotorcycles
Topic: 170mph EV Land Speed Motorcycle
Replies: 6
Views: 455

Re: 170mph EV Land Speed Motorcycle

Very cool :thumb: A build tread would be nice :wink: So the motor comes from a small, slow car? Never heard of it before I think, but google knew of it.. Didn't find anything on the motor itself though. The closest I get on the controller is the curtis 1238E-75XX https://cdn.curtisinstruments.com/pr...
by j bjork
Sep 07 2021 2:16am
Forum: EScooter/EMotorcycle Build Threads
Topic: 2017 Honda CR250R to Electric
Replies: 42
Views: 4918

Re: 2017 Honda CR250R to Electric

It is a custom 428 63 tooth. Great company BTW! The front is a 12 tooth from Amazon. So you have 5,25:1 gearing on the chain drive, and something like 2,3:1 in the primary gears? That would make about 12:1 :o I guess it has to be very peppy on the throttle :wink: But how is the power at higher speed?
by j bjork
Sep 07 2021 12:06am
Forum: EScooter/EMotorcycle Build Threads
Topic: Yamaha YZF250F
Replies: 204
Views: 14129

Re: Yamaha YZF250F

hugok wrote:
Sep 06 2021 2:31pm
What kind of charger are you using?
It is server psu:s, eaton apr48-3g.

I am setting them to 60v each, and series connect 2 of them.
But I need to get the program to work to be able to set the amp.
by j bjork
Sep 06 2021 1:25pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Yamaha YZF250F
Replies: 204
Views: 14129

Re: Yamaha YZF250F

It has been a long time since I updated, but the progress has been slow. Mostly small things on the battery, but I will start with the charger: https://i.imgur.com/Uq8Cu6s.jpg https://i.imgur.com/vqKOiKk.jpg Some soldering wires, I drill holes and push the wires trough so I can solder them on both s...
by j bjork
Sep 04 2021 5:38am
Forum: EScooter/EMotorcycle Build Threads
Topic: New build
Replies: 17
Views: 995

Re: New build

Looks like a hub meant for a car, odd choice.
I would also be interested in the story behind it :wink: