Need some help pickingthe right parts..

[Insane01VWPassat]

I am starting a project for myself and to be used as a demo project for the company I work for... I do understand that I could buy a 4 wheeled electric scooter but that would be to easy and no fun to build...


I am building a 4 wheeled electric scooter/icechest/rolling audio system for my personal entertainment and for a demo project for the company I work for, Arc Audio...

We will be building the frame, suspension, body, cosmetics, audio system etc... with a local shop that builds race cars and race car chassis for a few of the Nascar teams. The problem I am havng is picking the correct components that will work for the criteria of the project. What I need to purchase is the follwing...

Elecric Motor
speed controller
throttle
brakes

I already have all of the batteries lined up etc....

I would like it to be able to easily haul up 550 lbs (Cart, system and rider) at speeds up to 20mph or more... the biggest concern is a higher torque specification to be complaient to the weight issue we will be fighting here and still hope to retain a decent run time on the batteries....

as far as budget... I would say no more than $1000 for the motor, controller, and throttle assembly.....


any suggestions will be greatly appretiated...

 

[Insane01VWPassat]

Anybody????

 

[KieranM]

As far as electronics for medium size projects go this place is great http://www.robotmarketplace.com/store.html

Would you plan to have two motors working on a skid steer idea

Oh yea best user name ever haha

 

[Insane01VWPassat]

I looked on the site.. but will any of those motors be able to handle a heavy weight applicaiton like this..l. Im figuring, system, rider and cart to be about 600lbs and I am hoping to be able to handle the weights and have a good overal speed anad acceleration to the cars as well as long battery life...

For batteries... I have access to some really nice 12 volt batteries we have used in car audo for some time...

Will it be better for me to do a 12 volt system or would I have better options using a 48 volt system for the drive train? ... this i all greek to me and this is tur ning into a major project with the ammount of work going into it... Unfortunatly... the motor, speed controller, and electrical for the ddrive system is where i have no idea where to start..

wasnt planning on a skid steer.... since we ae building a jag style rear end for this cart and doing 4 link air bag system on this cart... so I was hoping to have only one motor for the drive line and then traditional steering in the front..... still picking wheels as well..

and im in a tight spot as we are alrady starting the aluminum tube frame and F&R 4 link bagged suspension... so I have to get the motor and drive trian figured out quickly....

 

[zabac70]

For that amount of weight , you should be looking at some serious motors (5-10 KW or more) from e- biking world or automotive world, that is if you want some performance. The controller should take at least 100 Amps (the more is better - in correlation with motor, you don't want to melt it). In this kind of setup , you should probably use differential of some kind to transfer the power (you must consider ratio between the motor (rpm) and differential). Try EVparts (google). Good luck.
P.S. Volts = speed . Amps = power . 12 V setup isn't an option for you (enormous amount of Amps , with not much speed - electric wheelchairs have 24 V setup usually ). 48 V is the way to go. If you get your hands on 36 V motor - you can overvolt it to 48 V with no worries , just look that current (Amps) isn't too much for your motor (regulated by controller).