R84

News: The R84 is officially NOT for sale any more and is being prepared for a re-configuration of the entire system. It is however a fine example of my shops capability's to build custom electric vehicles for all my clients needs. I will NOT however answer any advanced questions unless you have approved and made payment on a bid for a custom conversion from my shop. The battery range and speed capability's are NOT fully tested. What I can tell you is that the bike has decent zero to 60 acceleration and an approximate range of 40 miles on balancing controller coupled to the zivan charger. Here are some basic facts about the bike in the pictures:
R84:As pictured:
28cell lithium (LiFePo) 50ah 3.3v(nominal), AC induction drive, Curtis AC drive controller, Zivan charger and of course all aluminum battery frames. All this packed into a 2000 Yamaha R1. Custom built by me at my shop Graywrx Fabrication in West Oakland for Todd Kollin of Electric motor sport (also in West Oakland). For sales and custom vehicles email Justin Gray at: graywrx@gmail.com You can check out Todds web site at: www.electricmotorsport.com

R144 the DC super bike

R144:
144vdc,48cell Lithium, with a Curtis 144vdc 550amp controller, running a 60kw series motor. This bike was custom built by myself for Todd Kollin of Electric Motorsport in Oakland, Ca. Unfortunately, this bike is not for sale. It is however, an example of the custom work that I produce out of my shop, Graywrx Fabrications. For more information please contact me at graywrx@gmail.com.

rob has a great job at CASS

Boyd Coddington 1944-2008

In Memoriam: Boyd Coddington 1944-2008

Much Respect.

video of libby the robot.

Finally some burning pictures of robot libby

I had some time with my robot when i got home from Holland decided to get some shots, I was operating the robot while taking the pictures so you can expect me to post some better ones later.

"Robot Libby"

My dog libby died last year from a un-known brain disorder. I was inspired by the sadness of here death to find the resolve and courage to build my next sculpture:"Robot Libby"
With some financial help from the Crucible and a hard dead line of July 12th 2007 i set out to build the ultimate fire sculpture robot, and in exactly 35 days she was completed and delivered to the 2007 Fire Arts Festival.
My largest solo sculpture, Libby represents a leap into electro-hydraulic animation control systems with multi fuel forced air fire sculpture driven around on top. She is currently using a Futaba T12za transmitter with a custom Nathan Mariels control board driving the switches and blower control. The batterys are 4 12volt 100ah batterys salvaged from UPS which have issues, and are to be replaced by the latest battery technology.
Future work is to include finishing the stainless and bronze skin and adding a high powered ignition system for her "eye ball". So stay tune,ill post new progress and better images soon.

Ralphs car

Ralph's car, built by Orion Fredericks and Justin Gray (me) Orion did the fabrication and fuel system, and I did the manual and wireless control systems. Its 1991 Taylor Dunn Electric service car with two 10 gallon propane tanks running two remote controlled flame cannons.

ACR1 update (lithium)

So we finished the prototype lithium polymer R1, it is now the "lighting Lithium E1"
we had our first real show at the "Legend of the Motorcycle: Concours d'Elegance":
www.legendofthemotorcycle.com with an amazing response!

ACR1

ACR1: Justin Gray, Todd Kollin
Owner : Richard Hatfield of Alliance Renewable energy inc

Electric Motorsport of Oakland Ca debut of the AC inductance Yamaha R1. This revolutionary electric motorcycle is powered by a 550amp 84v AC inductance electric drive system providing 54HP and 81 ftlbs of toque allowing the vehicle to attain speeds of over 100mph. Builders Justin Gray, Todd Kollin, and sponsor Richard Hatfield of Alliance Renewable Energy created the Electric motorcycle to provide a Zero Emissions alternative to sport bike riders and commuters. The final build will have a 8.1 kW lithium iron phosphate battery pack that will power the vehicle for a 100 mile range.

46' chevy

its going to be a fabulous art car/truck. ill be putting it on 7.3 liter diesel

Ghetto dogs

Cupric oxide and Darwin. its just a neat picture.

Power wheels

converted to four wheel drive and radio control off road power wheels truck.
what can i say, its fn' fun.

A tribute to Darwin:

A tribute to Darwin:
Rarely do I go off one of my pets (robots) but Darwin really kicks some ass. Never mind the fact that his 4x4 drive systems have met and beat the toughest challenges (driving straight through a 1900 degree bon fire) but he also has 6 monumental scale tesla coil direct strikes and flame ignition (tesla coil ignites his fire) under his belt! He just gets soooo fired up when some one thinks they can kill him with a tesla coil. HAH! (knock on wood Darwin).
This past summer, he had his proud SRL debut, he ran , jumped, played, crashed and screamed , with the super big boys. A 40 minute show of blood , fire and sheer robotic terror was faced gallantly by my little Darwin. Thanks Christian Ristow for inviting me/us to be a part of his psycho off the hook robot shows In LA too. Its this experience that has allowed me and my robot to gain the confidence and agility smash through with SRL.

Newest robot

This is yet unnamed, although some nasty agro names do pop into mind when i look at it.
its completely hacked up mauldin asphalt paving machine that i bought on ebay for $300 bucks. Once the hacking was finished i installed a Mitsubishi L3E diesel engine, with a vickers hydraulic pump for hydraulic power and a big ol’ hydraulic reservoir the rest is still on the drawing board. the plan is to get it driving under its own power by July. (head to the grind stone).

also , keep in mind, it will look nothing like this when I am done, accept for the tracks. but even the tracks will look slightly different. i like to think that i am a sculptor and a robot builder, i want to gracefully merge the two, but in some case accentuate the prevalent seem between the two worlds.
Fabricated materials: stainless steel, bronze, and copper.
I always say “ if you cant hide it accentuate it”
Names:
The cruncher
The screech (based off a sound generated by Darwin)
Cant think of any more. Its hard to name these things. but what is in a name.

metra kit finished

I just finished building this little guy for Electric motorsports . its got a perm 132 running at 72v with an al-trax 72/450a controler, you twist the throttle 1/8th turn and the back tire starts to burn.
hot little bike.