Search found 466 matches

by minde28383
Jun 06 2019 1:46am
Forum: Items for Sale - New
Topic: QS 3kw 138 70H + rear pulley 300Eur
Replies: 6
Views: 1014

Re: QS 3kw 138 70H + rear pulley 300Eur

I don't have it anymore (sold) therefore nothing to measure.
by minde28383
May 08 2019 9:45am
Forum: Items for Sale - New
Topic: brake hub
Replies: 3
Views: 469

Re: Twin / double / two brake hub

Updated initial post.
double hubs gone.
hub available as in pic (see initial post).
by minde28383
Apr 30 2019 10:37am
Forum: E-Bike Build Threads / Photos & Video
Topic: E-S Stealth Electric Bike Owners
Replies: 16462
Views: 1553749

Re: E-S Stealth Electric Bike Owners

Alto, Best see few normal wheels to find how it should be. Bent spokes usually are on rear hub wheels where spokes are short. Front wheels are usually no issue. If you hear sounds from front wheel than probably you have loose spoke. Raise front and spin wheel and check every spoke by hand by moving ...
by minde28383
Apr 29 2019 6:29am
Forum: Items for Sale - New
Topic: qs205 50H v3 3.5T
Replies: 0
Views: 216

qs205 50H v3 3.5T

qs205 3kw 50H v3 3.5T New, untouched, wirea ends wrapped in protective plastic.
Bare hub, no rim.
I guess motor specs are not need here as it is standard hub.
345eu shipping free within EU.
PM regarding shipment.
by minde28383
Apr 29 2019 3:46am
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 148
Views: 19824

Re: New build, BHT mid-drive "direct", custom frame

Tektro makes 2.3mm These are coupled with brake supports designed for up to 45km/h as they advertise it. Usually brake rotors are ~1.8mm Ps. Chinese brakes comes with thin regular brake rotors and are advertised as brakes up to 45km/h. Never tried but I think before mentioned magura brakes are good ...
by minde28383
Apr 20 2019 10:56am
Forum: E-Scooter and Motorcycle General Discussion
Topic: QSMotor 4000W V3 17” Hub Motor Aprilia RS50 Conversion
Replies: 32
Views: 1343

Re: QSMotor 4000W V3 17” Hub Motor Aprilia RS50 Conversion

300A max for short bursts sounds very good. 34kg heavy but I'm sure this pack has its own advantages. Is that how these cells look? see pic. Of course it is good motor. Wheel size is just a matter of Kv and vs. As you know small wheel wins over bigger because of mechanical advantaged ie better thrus...
by minde28383
Apr 20 2019 8:25am
Forum: E-Scooter and Motorcycle General Discussion
Topic: QSMotor 4000W V3 17” Hub Motor Aprilia RS50 Conversion
Replies: 32
Views: 1343

Re: 72v 30AH pack to drive QSMotor 4KW 17” hub motor

... you can limit the battery amps to 55A and just make sure you got plenty of amps to trow at the motor to get as much power early ... Sounds not realistic. How you can achieve that? You take 11kv 4kw hub, tire OD 23" Set battery Current 55amps, phase 500amps. And expect good start, acceleration?
by minde28383
Apr 20 2019 8:09am
Forum: E-Scooter and Motorcycle General Discussion
Topic: QSMotor 4000W V3 17” Hub Motor Aprilia RS50 Conversion
Replies: 32
Views: 1343

Re: QSMotor 4000W V3 17” Hub Motor Aprilia RS50 Conversion

Ask QS what Kv and windings they will make for you. It will be interesting to foresee what dynamic to expect out of nominal 4kw hub. Regarding smaller wheel. You too acquire smaller rim 14inch, 16inch, 17inch and adjust you wheel OD (overall diameter) buy choosing different tire sizes 100/80-16 120/...
by minde28383
Apr 19 2019 1:29pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: QSMotor 4000W V3 17” Hub Motor Aprilia RS50 Conversion
Replies: 32
Views: 1343

Re: QSMotor 4000W V3 17” Hub Motor Aprilia RS50 Conversion

Regarding speed don't worry. You can do 120km/h with these frames. As long as you have good front brake. If you need only 80km/h you can make it with qs205 3kw. But it is 150mm axle so you would need to fabricate rear fork. If you plan to use the same rear fork than qs273 4kw will do; to be even mor...
by minde28383
Apr 19 2019 1:38am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2094
Views: 263008

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

Jamil.Siddiqi wrote:
Apr 02 2019 5:10pm
...considering the Heidenau K40 or M3 tires. Does anyone have experience with Heidenau? Specifically the weights and rolling resistance...
According my web source Heidenau K40 18" 2" width weighs 2kg.
by minde28383
Apr 18 2019 10:10pm
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1210
Views: 203276

Re: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China

what's that 12v ? Is that high brake? It used to be that you need to supply Ground for high brake? Now it is 12v?
by minde28383
Apr 18 2019 9:29am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2094
Views: 263008

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

Regrding rolling resistance: I think too that rolling resistance might play biggest role between these two small, almost identical outer diameter wheels, but one wheel being slightly wider. As you said it: ''would be hardly measurable''. Regarding Rim: It does make noticeable difference if you weig...
by minde28383
Apr 16 2019 11:25am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2094
Views: 263008

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

Regarding tire on front wheel. It also depends on wheel diameter. Smaller bicycle tires (24'' - 20'' wheels) can be run up to 60km/h no problem what so ever. Some bicycle tires weighs ~1kg. I think Kenda flame bicycle balloon tire is heavy tire. It is flimsy tire but on 24'' rim and 20'' is good, ac...
by minde28383
Apr 11 2019 3:01pm
Forum: E-Bike General Discussion
Topic: hub motors, have you broken your rim/spokes yet
Replies: 13
Views: 654

Re: hub motors, have you broken your rim/spokes yet

Maybe someone who already broke some spokes and know what's better for 12kg 205 hub in 16'' moped rim? Would it be thin ones - 2.6mm or thicker - 3.2mm or 3.5mm? In one cross pattern. Somewhere read that 2.6mm are more springy and strong enough for heavy hub, but my hub has 4.2mm spoke holes, rim ha...
by minde28383
Apr 11 2019 12:02pm
Forum: Items for Sale - New
Topic: Moped Rims and Wheels, 36 hole, 16" 17" 18" 19"
Replies: 173
Views: 36308

Re: Moped Rims and Wheels, 36 hole, 16" 17" 18" 19"

Old thread but will give a try.

What is spoke length (1 cross pattern) for QS 16'' 1.6'' rim? Possibly know ERD of their 16'' rim?
Used with qs2053kwv3 hub.
by minde28383
Apr 08 2019 7:43am
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1210
Views: 203276

Re: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China

Yes, try amps, to 5T 90A batt/250A phase; 3.5T 130A batt /350A phase. It should heat less in low speeds.
Which motor you prefer now, why?
by minde28383
Apr 07 2019 2:53pm
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1210
Views: 203276

Re: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China

cerberpeter, we know your rim size, but would be interesing to find out what you mean by " for climbing on a relatively steep mountain". How steep and how long you climb, on what surface and at what speed? Of course all approximately, roughly; and weight of ev including you. As mentioned, sometimes ...
by minde28383
Apr 03 2019 12:00pm
Forum: Large EV General Discussion
Topic: Lightweight Mountain Cart
Replies: 5
Views: 919

Re: Lightweight Mountain Cart

Beautifully constructed. Looks comfortable to drive. Some parts connected with rivets, looks nice, CNCed parts... Like constructor. That is a beautiful piece of machinery.
by minde28383
Apr 03 2019 5:32am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2094
Views: 263008

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

mc 19'' is almost like bicycle 24 wheel. 18'' mc wheel little bit smaller. These Heidenau weight don't know but I think in 2.75'' weight won't be much different from Mitas, Sava tires HC7 H03. Sometimes 3.0 width tire is quite wider and heavier if it is dedicated for motorcycle rear wheel compared w...
by minde28383
Mar 26 2019 6:39pm
Forum: Items for Sale - New
Topic: Hubmonster 94% efficient 7kw NO LONGER FOR SALE
Replies: 454
Views: 65789

Re: Hubmonster 94% efficient 7kw rated $587

Don't know. Can't answer that.
by minde28383
Mar 26 2019 4:04pm
Forum: Items for Sale - New
Topic: Hubmonster 94% efficient 7kw NO LONGER FOR SALE
Replies: 454
Views: 65789

Re: Hubmonster 94% efficient 7kw rated $587

If you after efficiency than use low Kv hub and run it high voltage battery, over 100v. But you won't reach 94%. According simulator low Kv hub is slightly more efficient compared with high Kv hub. Wrong. Please don't post nonsense like that in this thread. Not sure what you didn't like so much but...
by minde28383
Mar 20 2019 2:54pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Custom 5kW Vector (QS 205v3/Kelly/DNM)
Replies: 56
Views: 4008

Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

My bad, mistype, I assumed it is SAYOON relay, not Sanyo.
I keep an eye on these liitoKala 2660. I'm interested how these LittoKala 26650 behave in longer term.
by minde28383
Mar 20 2019 7:51am
Forum: E-Bike Build Threads / Photos & Video
Topic: Custom 5kW Vector (QS 205v3/Kelly/DNM)
Replies: 56
Views: 4008

Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Is tha Sanyo 60V 150A? Looks like the one but might be any. You are using circuit breaker and relay. Double protection. Have you installed diode on relay? There is magnet/electrical voltage spike when relay coil disengages therefore diode is required to protect controller. Not all controllers requir...
by minde28383
Mar 19 2019 8:31am
Forum: E-Bike Reviews & Testing
Topic: Sabvoton SVMC072150 controller review, variable regen *PICS*
Replies: 292
Views: 47942

Re: Sabvoton SVMC072150 controller review, variable regen *PICS*

Just fyi controller has usb interface (cable) to which usb dongle can be plugged. It shows error codes on mobile phone screen in Sabvoton OEM mobile app, also it allow to change parameters like amps, cut off etc. It is very useful peace of equipment but it works only with the Sabvoton controller and...