GNG, 1000W 48V BB-drive, $400

[LightningRods]

http://www.mistertao.com/taobao-products/taobao-item-18826436986.html

Watch the shipping charges. Compare overall expense to GNG direct. There is no reason for the shipping to be more.

I saved about $80 buying my GNG through Mister Tao.

 

[dan974]

if anyone got the 60V/650W kit cheeper on Taoboa plz share a link...

 

[Whiplash]

Thanks LightningRods, which shipper did you use? I'm thinking Singapore Post? The kit is what about 6000g plus?

 

[LightningRods]

Thanks LightningRods, which shipper did you use? I'm thinking Singapore Post? The kit is what about 6000g plus?

I used EMS. They got the kit to me in about a week. It was still beat to death because the kits were still very badly packed back then. Recent kits are packed well and arrive in good shape.

I have 8000g in my head for the weight of the entire kit. Anyone know exactly?

 

[dan974]

does anyone think that the "new" 650w60V, could be just the same motor than the 500W48V but running it @ 60V make it 500x60/48=625W ....and so offering it runnable @ 60v it need primary higher reduction and a chain....

 

[cai876]

I think that's exactly what it is.

 

[LightningRods]

I agree.

 

[dan974]

and so when I asked for the 500W KIT without controller they offer 20$ discount, so I think they upgraded the controller to more V, not sure, what is the Hoc of the controller sold with the 500w kit ? @ least the upgrade kit's primary reduction seems bigger (runningInt speeder)...

 

[kifukarider]

The thrilling rush of having my bike wheelie out in front of me, causing skinned knees was worth it. It's a wonder what a few more amps can do. Luckily I have a wife to tend to my wounds.

My mild mannered commuter bike apparently wants to be a speed machine.

I programmed the controller to 40 input amps and 100 phase amps. It made a world of difference.

The Goodyear belt eventually started skipping under heavy acceleration, but it has not lost any teeth. The first time the original Gates belt skipped, it was toasted and lost teeth with the stock amperage. The Goodyear belt seems only to be stretched a bit and need tightening.

I'm looking forward to putting more miles in with the new controller.

 

[kifukarider]

Followup, I tightened the belt and still got skipping. The Goodyear belt now looks like it has aged 100 miles in 5. As good as the Goodyear belt is compared to the Gates, it is not up to the the task at 40 amps. Of course, I'm only confirming what others have already found.

I'll post again when the belt fails, it seems to be stubbornly resisting my inadvertent attempts to kill it.

 

[speedmd]

Stop wasting your time on belts. Time to get serious and get some real torque transfer with a chain drive now that you have some juice flowing.

 

[dan974]

http://www.mistertao.com/taobao-products/taobao-item-18826436986.html

Watch the shipping charges. Compare overall expense to GNG direct. There is no reason for the shipping to be more.

I saved about $80 buying my GNG through Mister Tao.

which categorie do you search in mistertao to find it ?

 

[LightningRods]

Stop wasting your time on belts. Time to get serious and get some real torque transfer with a chain drive now that you have some juice flowing.

:lol:

 

[LightningRods]

http://www.mistertao.com/taobao-products/taobao-item-18826436986.html

which categorie do you search in mistertao to find it ?

Mister Tao isn't going to have the new 60v kit for a while. GNG is selling all they can make right now. They'll start selling to resellers when the demand drops off.

The search engine on Mister Tao is useless. The link above should take you right to the 48v mud guard kit. If the link doesn't work copy and paste the url into your browser address window.

I ordered two 'big blocks' off of Mister Tao last night. You can now pay direct with a credit card and not have to fund an account. There were two listings from the same vendor with the same photo. One motor was listed at 48v, the other at 60v. The 60v was $20 more. I'm betting that I get two identical motors. Since they don't even come with a controller it's a total hustle!

 

[skyungjae]

Stop wasting your time on belts. Time to get serious and get some real torque transfer with a chain drive now that you have some juice flowing.

I bet you could just order the primary chain drive motor assembly without all the other parts of kit from GNG Jon for not that much and just replace your belt motor. :wink:

 

[LightningRods]

I bet you could just order the primary chain drive motor assembly without all the other parts of kit from GNG Jon for not that much and just replace your belt motor. :wink:

You probably would have to order the entire motor assembly from Jon to be able to use his chain primary. He's almost certainly come up with a different motor spindle to run the sprocket on. You can't just bolt his chain drive sprocket onto your belt drive spindle.

 

[skyungjae]

I bet you could just order the primary chain drive motor assembly without all the other parts of kit from GNG Jon for not that much and just replace your belt motor. :wink:

You probably would have to order the entire motor assembly from Jon to be able to use his chain primary. He's almost certainly come up with a different motor spindle to run the sprocket on. You can't just bolt his chain drive sprocket onto your belt drive spindle.

Yeah, that's what I meant. I didn't mean just the parts for the primary chain drive. I have a feeling that many people are going to be emailing Jon to see if they can order just the new motor to replace their belt motors.

Personally, I'm sticking with belts.

 

[LightningRods]

There are more photos on the GNG site now. It looks like there are approximately 54 teeth in a sprocket diameter of approx 5 1/2" or 14 cm. That means the closest tooth pitch is .3" which is #219. If they actually are 219 sprockets users would have the option of using good quality kart chain.

 

[skyungjae]

There are more photos on the GNG site now. It looks like there are approximately 54 teeth in a sprocket diameter of approx 5 1/2" or 14 cm. That means the closest tooth pitch is .3" which is #219. If they actually are 219 sprockets users would have the option of using good quality kart chain.

I'm curious about that small sprocket and how it'll react to wheelies and high power.

 

[LightningRods]

I'm curious about that small sprocket and how it'll react to wheelies and high power.

If GNG runs true to form the drive sprocket will be too small (sub 12 teeth). The consequences would be more noise and rapid chain wear. With 54 teeth on the driven sprocket they would need to run a 9 tooth driver to get the same 5.7:1 reduction as the 14T/80T pulleys and belt. They already run a 9 tooth on the Gen 2 secondary so it won't surprise me if they went that way again. Since 219 is so compact 12/70 would have made more sense.

The main question in my mind is whether the controller/throttle combination works any better than the 36v and 48v versions. If you still have to junk the controller and throttle the idea of a '60 volt' kit is kind of pointless.

 

[dan974]

Hi Dan,
The brushless motor can work at 60v650w,The higher the volts the more power output from the brushless motor.The max volts is 60V,Not exceed 65V.Thanks!
Best regards
Jon


Hi Jon,

would you plz tell me if the motor in the new 60V650W is the same motor than the 48V500W just with more V, and if the controler is the same, in case, what is the HighVoltageCut of the controler

plz, Dan

regards

I love chiness answers...I think it's the same motor for sure...

 

[skyungjae]

I wonder if increased chain wear would be more of an issue than wear on the small sprocket. The GNG Gen 2 sprocket doesn't like added power as there are pictures of them cracking under increased A.

http://endless-sphere.com/forums/viewtopic.php?f=28&t=45740&start=150#p730967

 

[speedmd]

Stop wasting your time on belts. Time to get serious and get some real torque transfer with a chain drive now that you have some juice flowing.

:lol:

:lol: :lol: :lol: The last one got some juice flowing for certain. Agree, no problem running blowers with big pulleys and not much reduction or a cruising bike that can barely get out of it's own way with one that is way oversized.

 

[LightningRods]

:lol: :lol: :lol: The last one got some juice flowing for certain. Agree, no problem running blowers with big pulleys and not much reduction or a cruising bike that can barely get out of it's own way with one that is way oversized.

Denise hit the nail on the head when she said that I enjoy wrestling with the engineering problem of the pulleys and belt. The #25 chain conversion is a simple and obvious fix. There really isn't a whole lot to do there. If I can make the belt work, which I believe that I can, I think it's going to be a great alternative to the chain.

I'm still casting test pulleys. The first urethane that Smooth-On sent me was super tough but didn't have high enough heat resistance. I've just received a high temp (250 degrees F) urethane with a Shore hardness of 85. A construction hard hat is 80.

I want to make both a 95 tooth and a 120 tooth driven available. The 120 has better reduction obviously, but the 95 will engage more teeth on the 18 tooth driver and actually allow the drive to transmit more power.

I couldn't resist the obvious ad-style pandering of the bike with scantily clad girls sticking their butts out. Too many years in advertising.....

 

[ferret]

Maybe someone can help me?

On the front end plate of the motor there is a bulge that houses the front bearing. Can anyone please measure the height and diameter of the bulge?

Thanks,
Avner.