Electric skateboards

:emb:

how over sensitive am I?

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I found the "retail" skateboards "good enough" but I wanted more! So I picked up a 1,500 Watt motor, machined some motor mounts installed dual 24 volt battery packs,installed the Modified "Skatebrake" as front brakes.

Added a HELLA fog light/24volt Halogeen light bulb/ for night riding, Posi-traction comes in handing in the odd patch of gravel, FYI the Bladz go kart has some nice wheels which can be altered in a machine shop that makes "small run" or "prototype" parts.

My designs range is 25 miles, uphill- not much "flat" around here I don't know how far it would go on level ground, recharge is around (2)hours.

Set-up and run time is 16.5 hours,to machine the parts and install the systems, figure the local machine shop hourly rate and that tallys the price.

I know expensive, reliable was more important 9 years ago the above design was created, and I did my first chain/drive gear replacement-cost 67 pounds, enjoy cruising bye.

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Regarding Ugrades;Motor/speed controlers.

I have always used "Wired" gear, 6 years ago I designed a skateboard which is 400 mm wide, Machined the base plates and Hangers so I could use the "shifter Kart" wheel which are DURO 11x6.00-5 on Alum racing rims,filled them with (A)& (B)Silicon.

which is used in manlifts,(flat tires are bad)when you are up in the air.

I recently ugraded the motors, (yes (2) motors) to Enigma v.s. the Lynch, because the enigmas have better mid-range torque and are 50% more efficiant, "power management" is the key to extended ranges.

plus the brushes in the lynch "eat" the copper contact surface, ran a single chain thru both motors, at 48 volts DC I suspect with the "original" Kart driven gear 95kmh would be possible, Installed a 1209 Curtis controller,(which is a real monster) luv EBAY picked it up at a good price. Hydrolic brake is a Volvo/Caliper. Extreme Skateboard,Posting Video to UTUBE after editing. if you have problems with your electric Skateboard let me know. Bye.

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Regarding Vibration;

Lead plates in Batteries are not that strong and they are in acid, so I wrapped my batteries in Dense White Foam sheeting, 4 mm thick suggest wrapping them like a present, the usual battery tray vibrates to dampen this, small diameter rubber tubing can be added to the edges (a little glue might be required).

The above anti-vibration tactics will extend the "life" of the batteries. BYE

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Regearding Batteries,Spec. Resister controlers V.S. Capisitor Controlers.

Resister controlers are prone to failure, when this occurs, they are no longer part of the power management system in essence connect the batteries directly to the motor and this is called "Runaway".(BAD)

Resister controlers allow the batteries to be drained flat,this is BAD, some batteries can be drained flat like Ni-MH/electric power tools.

Now Mosfet Capisitor controllers like Curtis, supply acceleration energy from the capisitors which is around 1019.6 at 12,24,36,48,72 volts the Batteries are then not subjected to "FLEX" so I have been using the same batteries (6) years.

For example;curtis 1204 has an undervoltage cutoff at 16volts from 24volts, this prevents extreme battery damage,the deeper a battery is drained the shorter the "life span".

So you decide which speed controller to use with your electric skateboard.

Bye.

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Am I the only one wondering whats wrong with a normal skate or longboard and some leg power?!

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