Search found 124 matches

by Jil
Oct 16 2019 1:50am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 154
Views: 21256

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

This morning, after 1h at 750W continuous (@ 40 kph, with external temp around 25 °C), 100m before arriving to destination my G310 encountered a brutal power drop, with a bit of noise. After a few minutes I realized that the motor was very hot, it had clearly overheated. Indeed, using it at 750W fo...
by Jil
Oct 07 2019 11:30am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?

Final choice ordered : rear GMAC 8T + Phaserunner.
Thanks everyone for your help :wink:
by Jil
Oct 05 2019 1:45pm
Forum: E-Bike General Discussion
Topic: Looking to build a bike
Replies: 18
Views: 372

Re: Looking to build a bike

Why do you want a 45 mph cruising speed to ride... 3 miles ?
30 mph will be enough, your bike will be lighter, your battery also, and your ride will be only 2 minutes longer ;)
by Jil
Oct 05 2019 11:43am
Forum: E-Bike Technical
Topic: Portable 5-8 amp charger
Replies: 27
Views: 593

Re: Portable 5-8 amp charger

I have this 4A charger for my 52V batteries, it works well. You can choose among plenty of different plugs, and even ask for custom voltage. When I need to charge fast my 14s6p battery, I use 2 chargers in //. Yzpower builts also 6-8A charger, heavier of course. https://m.fr.aliexpress.com/item/3278...
by Jil
Oct 05 2019 8:03am
Forum: E-Bike General Discussion
Topic: Comfortable long range frame? EEB?
Replies: 4
Views: 268

Re: Comfortable long range frame? EEB?

I have a Surly Krampus steel frame, with 2.5" tires, adequate tires pressure (ie. low pressure), good saddle (Brooks B17 or C17) and good handlebar it's confortable. I'm using it up to 30 mph. I've done up to 200kms in one day with it. One downside of the Krampus : it's limited to 38T front gear (wi...
by Jil
Oct 05 2019 2:12am
Forum: E-Bike Build Threads / Photos & Video
Topic: Your Creation's Before & After Pics
Replies: 1850
Views: 603738

Re: Your Creation's Before & After Pics

Einsgruber wrote:
Sep 02 2019 4:01am
My first creation... just for a bit of fun
Nice built !
You’ve made the tubular battery yourself ?
by Jil
Oct 04 2019 3:16pm
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?

Interesting feedback sleepy_tired :) My short-list is now Grin All Axle (front) vs GMAC (rear). My main use will be around 700-900 watts, at high speed, on pavement. Intense use : 50 kms per day, 3 to 4 days per week. I don't have any trouble with chain alignement on my Surly with the G310, it shoul...
by Jil
Oct 04 2019 2:03am
Forum: E-Bike General Discussion
Topic: GMAC/MAC : maintenance and noise ?
Replies: 2
Views: 154

GMAC/MAC : maintenance and noise ?

Hi, I'm ready to buy a GMAC, but I have not been able to find a clear view on one possibe downside of this motor : is it noisy ? I would like a motor that I don't hear above 15-20 kph. Second question : what is the duration of the planetary gears ? Do they need to be greased often ? My use will be 5...
by Jil
Sep 29 2019 11:04am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360, GMAC, or front Grin All Axle ?

Still hunting for my next motor. I'm fond of the simplicity and reliability of the DDs, as well as their ability to run without overheating on long hills with statorade, but... they're heavy ! In addition, I have realized that my dropouts are 12*142, I have adapters for the G310, the GMAC (round 10m...
by Jil
Sep 23 2019 12:56pm
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

Hi, Still not fixed on RH212 vs GMAC. 2.5 kg less and much smaller plays in favor of the GMAC, while the maintenance-free and statorade is on the RH212's side. The difference of budget is not that high, around 140 USD more for the GMAC if I pick up the Phaserunner option for both motors (given the f...
by Jil
Sep 22 2019 3:27am
Forum: E-Bike General Discussion
Topic: Tiny 250 W hub motors
Replies: 12
Views: 474

Re: Tiny 250 W hub motors

Tiny motor 250W --> you should have a look on the G310 Bafang (123mm diameter), I have it, it's small, light (around 2.5 kg) and still powerfull : despite its 250W rating, you can use it on flat lands at 5-600W without overheating, and around 3-400W on hilly areas. If you don't need more than that p...
by Jil
Sep 20 2019 6:55am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

Thank you everybody for your advices. Just cancelled today my order of the G360 on Alibaba/Gomax, a vendor that doesn't reply more than once every 2 weeks doesn't make me feel confident... In addition, Justin told me he wasn't impressed about the G360 after having tested it. I have been playing with...
by Jil
Sep 16 2019 5:46am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

I used to have a 48V/BBS01 on my ebike, I really prefer the rear G310. Whether for the smoothness or the chain drive durability. Wouldn't recommend the G360. Its power density is less than a MAC, while more expensive than a mxus GDR-19. Have you tried it ? My point is just to have a motor that can r...
by Jil
Sep 14 2019 2:57am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

Thank you, but they don't propose the G360 on their AMazon store.
Any other option ?
by Jil
Sep 14 2019 2:30am
Forum: E-Bike General Discussion
Topic: Fast Ebike for a tough commute
Replies: 56
Views: 1975

Re: Fast Ebike for a tough commute

Hi ! If you want to buy a speed-bike "off-the-shelf", it will probably by a 45 kph/28 mph one, so not able to maintain 35-40 mph, especially on 40 miles. But you can still have a look on the (expensive) swiss Stromer, with 1 kWh battery and 850W motor (for Europe, for US it will be limited to 650W) ...
by Jil
Sep 12 2019 7:18am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

Hi,
Finally I choose the G360. I have contacted Gomax on Alibaba who sells it, but it doesn't seem in a hurry to make a deal for only one motor and announces 1.5 month of delay.
Do you know where I could order one ?
by Jil
Sep 07 2019 10:16am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

The g360 will fit my Surly Krampus at it is 138 mm OLD, like the G310 currently installed on my bike : http://www.bafang-e.com/oem-area/components/component/motor/rm-g360500dc/ I think finally the game for me will be between the G360 and the GMAC. The big difference is that I can buy the G360 for +/...
by Jil
Sep 07 2019 9:02am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

By « good performance at high speed », I mean « high efficiency », ie. a motor with a ratio Wmeca/Welec at its best at speed between 35 and 50 kph with 29 in. tires. My battery is 52V/20 Ah, so it can handle 1000W during almost one hour. Why not going for a direct drive ? But it’s heavy, and I prefe...
by Jil
Sep 07 2019 4:49am
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, G360 or GMAC ?

Thank you for your feedbacks on the 9C :)
Anyone with a feedback on the GMAC+Phaserunner ?
by Jil
Sep 05 2019 3:56pm
Forum: E-Bike General Discussion
Topic: 1 kW motor : rear G360, GMAC, 9C RH212, Crystalyte H3540 - or front Grin All Axle ?
Replies: 40
Views: 1843

Re: 1 kW motor : MXUS, 9C RH212, or GMAC ?

One question : is the GMAC noisy ? I've readen comments about the noise of the MAC motor, and this is clearly a no-go for me. I'm now used to my totally silent G310, so perhaps I should stick to his big bro G360 as a more powerfull, but still silent option ? By the way, does Grin intend to sell the ...
by Jil
Sep 02 2019 8:12am
Forum: E-Bike General Discussion
Topic: pedal assist or scooter?
Replies: 8
Views: 423

Re: pedal assist or scooter?

Hi, I'm using an ebike with a hub motor, following a mid-drive motor on the same frame. I'm using this motor with a basic PAS, not torque sensor, it's the way I like it but I don't have much experience with torque sensor. And even with the basic PAS (the motor is on at the power I choose as soon as ...
by Jil
Sep 01 2019 11:32am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 154
Views: 21256

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

Thanks, let’s go for silicone oil :thumb: