sportracer

A friend loaned me his dyno but said i need to get a car battery to use it I used my bulldog 30a power supply and it worked fine for stock motors that'a all that i run anyway .I was then told that because of not using the battery that the numbers wouldn't be accurate is this ture

Thank in advance.

1fastdude

iTrader: (16)

Yes, this is ture. (true) What happens is the motor, on start up, draws more amps then your power supply can handle and gives different numbers than if you had used a battery that can spike at 60 plus amps! I hope this helps. You can use a power supply, but it is not as accurate.

Tres

iTrader: (14)

1fastdude is correct..

You can also use a small lawn & garden type of battery.

RCGaryK

iTrader: (3)

I got the battery I use from Wal-Mart for like $18, and it works great. I also grabbed a small charger for it at the same time for like $25.

Jeff Brown

To get accurate numbers you need at least a 45 amp power supply for just stock motors. Ideally they say to use a 75 amp power supply.

Car battery works, just make sure it is always charged.

Jeff

nashrcracer

iTrader: (1)

yes I like my rivergate 75 amp bull dog. it works for 19t also.

sportracer

thanks eveyone i'll look at wal mart for the battery and a charger.

fastasu2

iTrader: (22)

Hey sport, tractor battery will work fine for the stock motors.

sportracer

Thats what I'm goimg to pick up and a charger yuppie said he has battery but the charger isn't all that good manta had it so who knows what shape it is in . pm me so I can get your home number I need to ask you some questions if you don't mind.