Greyborg build

General Discussion about electric bicycles.
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jerrydubois3   100 mW

100 mW
Posts: 39
Joined: May 20 2014 8:55pm
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Greyborg build

Post by jerrydubois3 » Jul 16 2014 8:12pm

Hey All...

I just wanted to put up some pics of my latest project. I bought a Greyborg Frame from Jeremy at Greyborg USA(very nice guy) along with the Cromotor, Schlumpf Drive. Had him lace the wheel into a 24 inch wheel. I ended up using the Cro in a Raptor I was working on and put a Crystalyte 3500 watt motor laced in a 26" rim. I am using a Lyen sensorless controller powered with a 72volt 12.5 amp hr battery from High Power Cycles. Thinking of bumping up to 108 volt though.

The bike is pretty fast when it needs to be but I have set the Cycle Analyst to keep power below 25 amps to go for distance and not speed. It climbs well and encourages pedaling. Thie pics show how I used plastic Push In Rivets to keep the cool panels in place. There is a tool you can buy to remove them for like $25.00. A bag of 25 rivets was only $3.00. The battery is held in place with Velcro. I mounted the keyswitch and charging jack on the left side panel. I think it is very clean.

Still need to figure out a kickstand. Would love to here from one of you about that. I went with a Rox Shock Air shock in the rear and i pretty much have to run 300 PSI to avoid hitting the pedals when cornering. Went with same brand up front. Brakes are Avid Hydraulic.

To compare it with my Raptor, i would say the Greyborg is more of a "Bike" and the Raptor more "Motorcycle" The Greyborg is a very nice designed frame that is easy to pedal and can actually be ridden as a bicycle.
Attachments
Borg1.jpg
Side view
Borg2.jpg
Top view of Riveted panels
Borg3.jpg
Chainline
Borg6.jpg
Charging port and keyswitch
Borg5.jpg
Motor and brakes
Phasor....108 Volt 100 AMP Cromotor
Raptor........108 Volt 100 Amp CroMotor
Greyborg....84 Volt 60 Amp HPC 3500 Watt

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millzy555   100 W

100 W
Posts: 175
Joined: Aug 14 2011 9:48pm
Location: Melbourne, Victoria, Australia

Re: Greyborg build

Post by millzy555 » Jul 16 2014 9:22pm

Nice bike, having just aquired myself i'll be keen on what you do next. With the rivets, are they permanent??, i'm forever taking the side cases off just using velcro atm

jerrydubois3   100 mW

100 mW
Posts: 39
Joined: May 20 2014 8:55pm
Contact:

Re: Greyborg build

Post by jerrydubois3 » Jul 16 2014 10:10pm

The rivets are permanant, but there is a $25 tool to remove. They are very cheap and fit the holes in the frame perfectly.
Phasor....108 Volt 100 AMP Cromotor
Raptor........108 Volt 100 Amp CroMotor
Greyborg....84 Volt 60 Amp HPC 3500 Watt

Animalector   10 kW

10 kW
Posts: 941
Joined: Mar 17 2012 4:50pm
Location: Mareeba - Queensland

Re: Greyborg build

Post by Animalector » Jul 16 2014 10:14pm

Look into rivnuts. Those screw in tabs I installed give the same result though. You have to at least own it a week before you can complain about removing the side covers all the time haha.

That Greyborg looks great. What weight does it come in at?

jerrydubois3   100 mW

100 mW
Posts: 39
Joined: May 20 2014 8:55pm
Contact:

Re: Greyborg build

Post by jerrydubois3 » Jul 16 2014 10:23pm

Maybe 70 lbs..I have not weighed it but it is way lighter than my Raptor which is 90lbs +
Phasor....108 Volt 100 AMP Cromotor
Raptor........108 Volt 100 Amp CroMotor
Greyborg....84 Volt 60 Amp HPC 3500 Watt

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millzy555   100 W

100 W
Posts: 175
Joined: Aug 14 2011 9:48pm
Location: Melbourne, Victoria, Australia

Re: Greyborg build

Post by millzy555 » Jul 17 2014 4:39am

Animalector wrote:Look into rivnuts. Those screw in tabs I installed give the same result though. You have to at least own it a week before you can complain about removing the side covers all the time haha.

That Greyborg looks great. What weight does it come in at?
Haha cheers Andy, more time looking and gathering parts than riding atm. Will get onto those rivets

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