Search found 23 matches

by BDamari
Jun 05 2020 12:39pm
Forum: E-Bike Technical
Topic: Motor noise issue
Replies: 10
Views: 218

Re: Motor noise issue

How old is this motor?
The bearings could be shot, although I can't think of a direct connection between that and the noise.
Does this also happen when you spin the wheel without electricity?
by BDamari
Jun 04 2020 8:37am
Forum: E-Vehicles General Discussion
Topic: 10kg+ hub motors, too much unsprung weight?
Replies: 16
Views: 531

Re: 10kg+ hub motors, too much unsprung weight?

I want to build a 100kmh/60mph machine. Even Tony (Vortecks on Youtube) has top-notch mtb suspension on his most recent build, and he said it himself: no Can you achieve a ride almost as comfortable as a motorcycle with mtb suspension? I got the little 205V1, right under 10Kg. I just bought a V3 to...
by BDamari
Jun 04 2020 5:22am
Forum: E-Vehicles General Discussion
Topic: 10kg+ hub motors, too much unsprung weight?
Replies: 16
Views: 531

10kg+ hub motors, too much unsprung weight?

I want to build a 100kmh/60mph machine. I have seen the MXUS 3k/QS205 motors, even lifted one just to see how heavy they are. Thing is, at speeds above 60kmh/40mph, I'm not sure that a mtb suspension can handle road imperfections and the occasional manhole cover, with the insane momentum from the mo...
by BDamari
Mar 12 2020 1:24pm
Forum: Battery Technology
Topic: Bashed in cells
Replies: 5
Views: 472

Re: Bashed in cells

For sure I wouldn't worry about the positive end unless it's caved in all the way. The negative end is a little more critical but may still be OK if the dents are not more than 0.5mm or so. If the negative end gets dented too much, it could possibly crush the separator and short something. Phew, th...
by BDamari
Mar 12 2020 11:44am
Forum: Battery Technology
Topic: Bashed in cells
Replies: 5
Views: 472

Bashed in cells

I got a package of a 100+ recycled and tested 18650s from batteryhookup (blue LG's), and about a third of the cells have a dented positive terminal. Some of them also have a small dent in the negative terminal. Luckily the dents dont seem too deep, I'm pretty sure I can still spot weld them without ...
by BDamari
Mar 11 2020 5:17am
Forum: Battery Technology
Topic: Do you need to "break-in" your batteries?
Replies: 5
Views: 422

Do you need to "break-in" your batteries?

In Richard Lloyd's video about the SPIM08HP lipo cells, he tests them on his car to see if they can start it. Link to the video: https://youtu.be/Gw9f68gN_s4 During the first few tests on a CCA meter, it showed a maximum of 350-400 amps (at minute 13:00). But after starting his car with the same bat...
by BDamari
Feb 20 2020 9:40am
Forum: E-Bike Technical
Topic: Hub motor help
Replies: 4
Views: 277

Re: Hub motor help

Please help. I have 2 hub motors both doing same isue. When i apply the trottle you hear the motor do something but takes a second to go. Once it starts to go the power comes in faintly then second later comes in full power If you have geared motors and you're already rolling when applying the thro...
by BDamari
Oct 03 2018 4:44am
Forum: E-Bike Technical
Topic: Delta/wye
Replies: 5
Views: 489

Re: Delta/wye

Punx0r wrote:
Oct 03 2018 2:43am
40mph requires approx. 2000W so if that 350W motor did, it probably wouldn't be for long...
I do think it is possible with peaks of 18-20A on a fully charged 48v battery in delta.. or atleast 35mph.
For instance my 20inch 350w ebike gets to 24mph on level ground in wye. (15A peak controller 48v)
by BDamari
Oct 02 2018 2:45pm
Forum: E-Bike Technical
Topic: Delta/wye
Replies: 5
Views: 489

Re: Delta/wye

It's my understanding that wye draws fewer amps, and that was the basis for several experiments many years ago. (*delta provides more RPMs for the same watts) Since high-amp cells have become readily available these last three years or so, interest in delta/wye switching has faded. Yes, but what I ...
by BDamari
Oct 01 2018 4:28pm
Forum: E-Bike Technical
Topic: Delta/wye
Replies: 5
Views: 489

Delta/wye

For the last two months or so I have been researching on how to convert a hub motor to delta from wye, possibly with a relay setup; I was hoping to get some answers from you guys. I know the steps, but I was warned that if I do something wrong it can cause the engine to stutter? I know the rewiring ...
by BDamari
Sep 10 2018 4:59pm
Forum: E-Bike Technical
Topic: Unknown compact controller made in russia (not adaptto
Replies: 3
Views: 403

Re: Unknown compact controller made in russia (not adaptto

*Sigh* sorry for the hassle, I just found out it's made in Germany instead of Russia.
And that LCD is just some chinese one from aliexpress, good looking tho.
Any help is greatly appreciated.
by BDamari
Sep 04 2018 11:16am
Forum: E-Bike Technical
Topic: Unknown compact controller made in russia (not adaptto
Replies: 3
Views: 403

Re: Unknown compact controller made in russia (not adaptto

It has a big wide lcd that kind of looks like the lcd of the zero electric motorcycle (which is kelly compatible, pretty sure)
I don't think it's this one
by BDamari
Sep 04 2018 9:31am
Forum: E-Bike Technical
Topic: Unknown compact controller made in russia (not adaptto
Replies: 3
Views: 403

Unknown compact controller made in russia (not adaptto

There's this real high quality high powered controller that looks like a standard Chinese controller but it's made in Russia and it's really small and black and it has this big wide lcd (not a ca)
that's all I really know... any help finding it?
by BDamari
Aug 24 2018 7:25am
Forum: E-Bike Technical
Topic: Best controller?
Replies: 9
Views: 1086

Re: Best controller?

I've been searching around the internet for a tiny very compact black controller that I saw the other day on the street, I'm pretty sure it's not Adaptto but I know it was Russian made, any ideas? Could it be "phaserunner" you're talking about? No, I found out it was custom painted in black, which ...
by BDamari
Aug 24 2018 3:53am
Forum: E-Bike General Discussion
Topic: 18650 shipment
Replies: 1
Views: 328

18650 shipment

I've been looking at these liitokala cells on aliexpress, some say they're great but some say they're fake. I'm looking for a place with worldwide shipping (I'm located in Israel) that sells genuine 18650s for a fair price. Also, I've seen two ebikes (one of them was a fatbike) with 20 inch rockshox...
by BDamari
Aug 24 2018 3:40am
Forum: E-Bike Technical
Topic: Best controller?
Replies: 9
Views: 1086

Re: Best controller?

I've been searching around the internet for a tiny very compact black controller that I saw the other day on the street, I'm pretty sure it's not Adaptto but I know it was Russian made, any ideas?
by BDamari
Aug 23 2018 3:27am
Forum: E-Bike Technical
Topic: Best controller?
Replies: 9
Views: 1086

Re: Best controller?

Kelly Controllers haven't let me down yet. I would go with the 80A Version: http://kellycontroller.com/kls7218s24v-72v200asinusoidal-brushless-motor-controller-p-1401.html This one is rated for 50A continuous:http://kellycontroller.com/kls7212s24v-72v120asinusoidal-brushless-motor-controller-p-1348...
by BDamari
Aug 23 2018 2:23am
Forum: E-Bike Technical
Topic: Best controller?
Replies: 9
Views: 1086

Best controller?

I've been looking all over the internet for a nice high quality sine wave brushless controller, I saw the Sabvoton, Infineon and the Adaptto but I always find mixed reviews. Some always say that they're great and some say it broke after a few miles, and they should've bought the other one. I'm looki...
by BDamari
Aug 11 2018 9:56am
Forum: E-Bike Technical
Topic: Hub motor assembly problem
Replies: 6
Views: 545

Re: Hub motor assembly problem

Sorry for not being so active, I did find out the covers are on the wrong side, but now I can't get them out! I have tried following someones advice to remove the bolts on the cover and bang the axle on the floor until it pops loose, it showed little to no progress (and I pissed off the whole buildi...
by BDamari
Aug 10 2018 1:58am
Forum: E-Bike Technical
Topic: Hub motor assembly problem
Replies: 6
Views: 545

Re: Hub motor assembly problem

If the covers are on the wrong sides, and the motor isn't a symmetrical design, then this could cause what you see. If there are bolts in the disc brake holes, and they stick out inside the cover (which they can with no disc mounted), they might push on the axle core when tight. If the rotor and co...
by BDamari
Aug 09 2018 6:40am
Forum: E-Bike Technical
Topic: Hub motor assembly problem
Replies: 6
Views: 545

Hub motor assembly problem

I recently ordered a DD hub motor from aliexpress from some reputable seller. His method to pass customs clearance in my country (Israel) was to send the coil and the magnets and casing in separate shipments so it's not really possible to see it's meant for an ebike. Moving on, I received the parts ...