Endless Sphere

My answer : yes it worths it. I have GMAC, with 14S6P battery (52V), I have set up my regen to 15A (ie. 800 watts), it is now my main brake in current use. I use the hydraulic brakes only in case of emergency, or to "finish" the stop. I think it worths it becasue it is smooth and you are going to us...

No, thanks
Indeed I think that I will finally replace my old hydraulic rear brake by a mechanical one, and use a brake cut-off lever that I have in stock to activate the regen (and still keep the mechanical rear brake for emergency).
And remove the throttle.

Thanks !
If somebody else can propose me a solution, I take it

Could someone help me ?
I would just like to know how to set up my Cycle Analyst (or my Phaserunner), I have found no information on Grin's documentation.
Thanks

Thanks
What is the procedure ?

Hi,
Is it possible to set up a simple throttle (the one provided by Grin with the GMAC kit) only for regen braking ?
I don't need a throttle for the motor, as I prefer using a PAS.

After 10 months, my Surly Krampus with GMAC is working well. I have made aroud 2500-3000 kms with it, without any trouble. I have juste encountered some spoke breakages on the rear wheel, but it was due to a bad mounting (by me...) This summer I have made a quick trip from south of France to Bardena...

mexican_amigo wrote: ↑

Dec 04 2019 12:50am

How fast do you spin out with that chain ring?

I have a 40T front, I pedal at 90 rpm at 45 kph (on the small rear gear of 11T).

Regarding teh GMAC, keep in mind that it doestn' have a freewheel in it, so without power it may be very difficult to pedal, possibly much harder than a DD hubmotor due to the planetary gearing No, it's not. I have a Krampus Surly with a GMAC and use it sometimes without battery, it's easy to pedal...

Thank you for the advices :) The QS3000 looks good. for my use. 3000W nominal is perhaps a bit low. Has it a big brother ? The PMS80 is really nice, but I don't want to put 1800€ in the motor itself. What do you think of this motor ? With a fan on the shaft to keep it cool. Realistic, or inappropria...

Hi,
I'm thinking about building an electric kit for my motorbike.
I'm looking for a small motor, able to work at 5-6 kW continuous (max 10 kW), and with a rotating speed 1000-5000 rpm under 72V.
Do you have advices ?
Thanks !

500WhatsThat wrote: ↑

Dec 02 2019 9:53am

My CA3 doesn't seem to repeat the motor temperature from the Phaserunner. The Temp reads -39C, LoL.
Does yours?

No but I don’t have the temperature cable.
Anyways given my use (high speed and flat terrain), the motor is not the limitation. I’ve never found it to be even a bit warm after use.

Quick feedback after 1 month 1/2 and 5-600 kms with my GMAC 8T (on 29" wheel) + Phaserunner + 14S6P battery + PAS : this setup is wonderful ! I'm able to drive at 50 kph on flat, with a power around 1200–1300W. The Phaserunner is amazing, so much power in such a small device ! But it's not made for ...

Despite my 52V battery and 29 inches wheels, I’ve chosen the 8T following simulations with the Grin tool. My main use is flat terrrain at 45 kph, 28/30 mph. For this 10T would have worked at 50V and higher, but not below. And the climbing capacity doesn’t change. The difference is the motor current ...

Hi, The G310 is very (very very) quiet. More than the BBS. But you won’t be able to maintain durably 40kph with this motor, except if you have a tuck position, the road is flat and there is no upwind. More than the speed, keep in mind that the G310 is perfect up to 600W (battery power) continously, ...

for 40km'h for comfort pedalling with PAS you need at least 12x53t transmission ratio. and 11x58T for 50km.h All depends on your wheels. My Surly Krampus has 29x2.5" tires, with 38x11 transmission I pedal comfortably (95 rpm) @ 45 kph. I can see why regen braking can be unpopular. I am currently wa...

Yes you're right, my ebrakes are 0/1. Perhaps, with the TripWire and the Phaserunner, I will be able to set variable e-breaking.
But for now, this setting is good to me. I will confirm next week, with 50 km of daily commuting to work, if this new GMAC is up to the job. I think it will

Installation done :) First impressions : - Powerful ! Compared to the G310 is was a foregone conclusion. I have set it up at 1500W max, I don't need more. PAS only, no throttle. - The moteur is smooth with my Cycle Analyst settings (I have a slow ramp-up), the only downside is the light noise. The G...

GMAC and Phaserunner received, installation this WE

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...

Sure, I will.

Final choice ordered : rear GMAC 8T + Phaserunner.
Thanks everyone for your help

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

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...

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...