Golden Motors??

[Trumpettom001]

Now, has anyone used these products before?? I've been looking to convert my MTB into an electric bike, and would like to know what the general opinion Golden Motor bikes are...

Also, does anyone know how many speed rear cassete can be fitted onto the rear motor wheel, as I currently have a 8 speed, and would not like to loose it if at all possible..

their insrtuction manual says most five, six and seven speeds will fit, which I found a little dissapointing....

Cheers,
Tom

 

[mrgarci1]

Search "golden motors" or "GM" on this forum and you'll find all the reviews & info you'll need about this company.

 

[dogman dan]

GM has had a less consistent reputation than some others. But all brands suffer from chinese quality controll, which makes the most important choice the vendor, not the motor brand. See the vendors we trust thread.

One way to keep the rear wheel intact is to do a front hub, but lots of issues with that, especially if the bike has quick release hubs.Definitely don't front hub an allow suspension fork. For cheap beach cruisers and wall mart mountain bikes, the front hub works great. If your bike is worth more than $200, don't ruin it with a motor. At least not on your first ebike.

 

[dnmun]

i just rebuilt a front goldenmotor, seems to be ok to me, haven't ridden it yet or even spun it since i pushed in the new phase wires and replaced the hall sensors. a first for me. about to replace some hall sensors and phase wires on jim's rayben motor. it is not machined or assembled as well as the goldnemotor, i know others who think the goldenmotors are ok too.

most people like the extra performance of the 9Continents, without the cost of a C'lyte.

make sure you go register to win one of the free monthly drawings from jason at e-bikekit.com because he has already given away about 7or 8 free kits. i have 2 of the front 9C and 2 of the rear 9C. i also modified my controller to use 48V nicad pack by adjusting the LVC to 37V and soldered up the shunt a little for more power. i also upgraded the controller to 72V with 100V1000uF caps and they ran ok on 72V lifepo4: doubled up 36V EBK lifpo4 packs.

jason finally blew one up, not sure how it failed yet, but the bike he had that 9Continents on was able to go 35mph.

 

[DAND214]

I have 4 of them plus a 9c, 2 bmc's, 2 bafang's and a we frt hub. I like the golden 24v 500w on 36v it pulls harder than my 9c on 48v. Top spedd is about 27 pedlin like crazy my 9C hits 32mph. My 36v 500w Golden runs great also. I like my 9C as well. The size of the free wheel will be up to you and the bike frame. I had 7 and had too much offset in the frame. I did need to redish both motors the 9C and goldens. I have bought my first Gloden grom GM and the others are from EBAY seller "sannykung" gave me good deal and has great communication. The rest is up to you, you don't need 8 speeds but it's nice for the gears to work properly. Good luck and happy Ebikin.
Dand214

 

[Hyena]

I like the golden 24v 500w on 36v it pulls harder than my 9c on 48v

I didnt know they made a differently wound 24v motor. Have you tried it on 48v ?

 

[bart_dood]

I am presently building a golden motor setup, I got a 750W 36v rear motor and a cruise type controller about two weeks ago. It took 5/6 business days to arrive after ordering.
I found this site after ordering my stuff from GM, I started reading about some of the quality control issues, but my stuff arrived fine. I built my own rear wheel from the hub motor, I found a couple of niggling things, one is the boss on the cast aluminum (freewheel side) is a slightly larger than it should be diameter, I had to take a dremel and cut away the edge a little to get clearance so my freewheel would spin. The other is the offset, I had to downgrade my bike from 8 speeds to 6, it didn't bother me as its a cruiser not a mountain bike.

I have tested the motor and controller using a benchtop power supply and they work ok, I decided to run them at a higher voltage than 36v so I'll be building a 48v battery pack eventually.
Do a search for my posts in the photos and videos section, I have some pics.

8)

 

[chet]

GM claims any GM controller will handle up to 60 volts.

 

[bart_dood]

GM claims any GM controller will handle up to 60 volts.

Sweet, looks like I'll be ok then!

 

[GCinDC]

the kit i bought in october came with a 5 speed freewheel (not cassette!), which upon my first ride, threaded itself tighter until it locked against the hub. a little spacer did the trick though once i found a bike shop with the right puller.

after this winter, my freewheel got so gunky, i tried to replace it, first with a single speed, then a 5 speed freewheel i got at a bikeshop, but it was not threaded deep enough, and when it was on, was crammed against the dropout. a nice guy cleaned my original and it's as good as new. point of the story: i don't think you'll be able to get more than 5 on!

ps. some of the kit components are cheap. i replaced the accelerator with a sturdy one, and did away w/ rear shifter entirely. 2 speeds are plenty for me now -- one only for STEEP hills and the other the rest of the time. but since i'm regularly up at 30mph, i'm looking to swap out my 48t crankset with a 53+....

pps. oh the motor is pretty wide. the one reason i'd look elsewhere is to get one that'll fit disc brakes.

 

[biohazardman]

I put a over 2K on my GM 500W 36V rear motor, about a third of that on 48V. The single wall rim was tossed immediately the spokes went next as several broke. The freewheel, throttle, and controller all failed within the 2K so have been upgraded as well. The motor itself has plenty of torque at 48V and is still in good order.

Five speed freewheel is it, I use only three gears, and my GM is not disk compatible. I have seen inconsistencies in the quality of many motors.


http://goldenmotor.com/SMF/index.php?topic=279.0

http://endless-sphere.com/forums/viewtopic.php?f=4&t=9501

 

[icecube57]

Ive been pushing my GM 48v 1000w. Its a fast solid motor for the price. I paid 350 for the kit excluding batteries. Ive ran mine at 36v 48v 72v and 84v *nominal under load*. It pulls like a horse on steroid. At 48v Lifepo4 it will run a solid 30MPH. *Rider Weight Dependant. One of the motors downfall is that it doesnt have a solid stator. It had two really thin but strong plates for structure. So it cant absorb alot of heat and abuse because it doesnt have the mass. The X5 has a solid steel and heavier as hell. The lack of this extra mass doesnt make it a good motor to run care free at higher voltages high amps. I think it could probably take 60v 30A at 75% DUTY CYCLE. I just recently put a temp probe in my motor because I plan on running *84v nominal. It heats up a bit but never to the hand burning point which is a good sign that you are under the toasty threshold. If you have responsible mixed riding style it should be fine. Match with the 3 speed Infineon controller it give you the power on demand when you need it at the flick of a switch For the money its a great kit. Some say the 9C is the little newer big brother of the GM. I think its slightly heavier. They are almost built exactly the same. If you consider GM there is a US vender called Arizona E bikes. Be careful about the Ebay venders. Some have the slower wound high torque motors that will disappoint you as far a speed.

 

[bart_dood]

the kit i bought in october came with a 5 speed freewheel (not cassette!), which upon my first ride, threaded itself tighter until it locked against the hub. a little spacer did the trick though once i found a bike shop with the right puller.

after this winter, my freewheel got so gunky, i tried to replace it, first with a single speed, then a 5 speed freewheel i got at a bikeshop, but it was not threaded deep enough, and when it was on, was crammed against the dropout. a nice guy cleaned my original and it's as good as new. point of the story: i don't think you'll be able to get more than 5 on!

ps. some of the kit components are cheap. i replaced the accelerator with a sturdy one, and did away w/ rear shifter entirely. 2 speeds are plenty for me now -- one only for STEEP hills and the other the rest of the time. but since i'm regularly up at 30mph, i'm looking to swap out my 48t crankset with a 53+....

pps. oh the motor is pretty wide. the one reason i'd look elsewhere is to get one that'll fit disc brakes.

I got a 6 speed freewheel on mine, I just cleaned the edge of the aluminum where it bottoms out on the threads, no interference problems and I didn't need a spacer.

 

[bart_dood]

Ive been pushing my GM 48v 1000w. Its a fast solid motor for the price. I paid 350 for the kit excluding batteries. Ive ran mine at 36v 48v 72v and 84v *nominal under load*. It pulls like a horse on steroid. At 48v Lifepo4 it will run a solid 30MPH. *Rider Weight Dependant. One of the motors downfall is that it doesnt have a solid stator. It had two really thin but strong plates for structure. So it cant absorb alot of heat and abuse because it doesnt have the mass. The X5 has a solid steel and heavier as hell. The lack of this extra mass doesnt make it a good motor to run care free at higher voltages high amps. I think it could probably take 60v 30A at 75% DUTY CYCLE. I just recently put a temp probe in my motor because I plan on running *84v nominal. It heats up a bit but never to the hand burning point which is a good sign that you are under the toasty threshold. If you have responsible mixed riding style it should be fine. Match with the 3 speed Infineon controller it give you the power on demand when you need it at the flick of a switch For the money its a great kit. Some say the 9C is the little newer big brother of the GM. I think its slightly heavier. They are almost built exactly the same. If you consider GM there is a US vender called Arizona E bikes. Be careful about the Ebay venders. Some have the slower wound high torque motors that will disappoint you as far a speed.

Interesting you should mention about the slower wound motors, I did a test on my 750W 36 volt unit, under no load at 36 volts I got 44km/h (27mph) at 48 volts I got 57km/h (35.4mph). Does this mean I have the slower or faster built motor?

 

[GCinDC]

Ive been pushing my GM 48v 1000w....Match with the 3 speed Infineon controller it give you the power on demand when you need it at the flick of a switch.

Gotta look that one up. What's the rated Amps?

I've wondered before what the diff between the GM48V 500W & 1000W kits is. Just the controller? Any idea of the specs of that one, or how far could you push it before you got the infineon?

For others wanting 30mph w/ the 48V kit, get the 20Ah Ping -- My 12Ah Ping tops out at 25mph, even w/ 30Amp controller kit...

PS. I bought mine on eBay....

 

[icecube57]

Interesting you should mention about the slower wound motors, I did a test on my 750W 36 volt unit, under no load at 36 volts I got 44km/h (27mph) at 48 volts I got 57km/h (35.4mph). Does this mean I have the slower or faster built motor

I think you have a regular (high speed wound). My GM 48v 1000w did 41-42mph free spinning on a 48v Lifepo4 Ductape pack at 53v nominal. So it almost in line with expectation. But there has been a member on here complaining that his motor was super slow. Another one complained to GM and they swapped his motor with their higher speed 430rpm motor.

The slower motors do exist in the wild but its hard to tell which is which. I have a front GM hub motor and mines is all silver but normally GMs's motor finish is black an silver. But mines is laser etched with gm 48v 1000w so it must be from the factory.

 

[icecube57]

Ive been pushing my GM 48v 1000w....Match with the 3 speed Infineon controller it give you the power on demand when you need it at the flick of a switch.

Gotta look that one up. What's the rated Amps?

I've wondered before what the diff between the GM48V 500W & 1000W kits is. Just the controller? Any idea of the specs of that one, or how far could you push it before you got the infineon?

For others wanting 30mph w/ the 48V kit, get the 20Ah Ping -- My 12Ah Ping tops out at 25mph, even w/ 30Amp controller kit...

PS. I bought mine on eBay....

I think as people mentioned earlier maybe the 24v version of the motor is wound differently but i think the 36v GM and up should be the same motor different controller. The stock 48v 1000w Sucteam Controller that came with my GM was a 30A controller.

The 12AH ping probably cant sustain a high enough voltage with a 30A load. My Volgood ductape pack used to hold a solid 50-53v for 75% of the discharge. If you are running SLA you could be in the low 40s which will effect your speed.

I noticed on the GM for every 12v you go over 48v you gained about 15mph free spinning but only gain 7-8 mph real speed.

The controller that im using now is a Ecrazyman 12Fet New Infenion Controller. Keywin can program it to whatever settings you want. I have mines set at 10A Legal speed 15-19mph depending on voltage 20A Unrestricted and 30-35A With Timing advance.(Timing advance makes a huge difference with a loss of torque on top end) I could use it at any voltage. Regen 60v programmed with the any voltage trick I got regen all the way to 96v.

I havent adjusted a spoke or trued my rim since i got it earlier this year. You hear spokes shift a tad during regen but all my spokes are tiiiiiggght.