tomahawk44

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Hello, i finally got my car ready but the starter won't turn it over. I have a 9.5 with a hyper .21, the box i have has a 550 type motor that uses two 7.2 volt ni-cads, i charged them but it does not have much power, this is my first box and i'm confused. I see some boxes have a large motor which uses a 12 volt deal, will these boxes do the trick, any help would be great, Thanks.

giddyuperic

The motor is to tight to turn over.So use a hair drier or a heat gun to get the motor warm so it will loosing it up and then try to bumb start it you should have no problems at all.

tomahawk44

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Thanks for the reply, i had airplane engines with the same problem, i've used heat on them,If i take the car away from the house i won't have access to power , are there any boxes that would work without heat, ok thanks.

Nick2618

not a 100% sure but after a couple of tanks i dont think you will have to preheat engine in more.

Neil E

Try loosing the glow plug 1/8 of a turn. Don't forget to tightem it after the engine starts.

tomahawk44

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Neil, thanks for the info, that works good with my roto start, but no luck with my box, i think i'll buy a new one, 12 volt, and use a battery with alot of amps, can i use a car battery without damage to the engine, thanks again.

VIPER458

check the voltage in your battery packs to see if its where its supposed to be.

evil

If its running 2 *7.2v batt then its running 14.4v assuming they are wired parell i use a car battery for my bump box,s and never had any problems

tomahawk44

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Thanks i'll give it a try, Tomahawk.

rickburnout666

I use a homemade starter box with a airplane starter and 12 volt battery, it turns over the .39 engine i have fitted in the car i`m building, my friends starter runs with 2 7.2 volt nicads and a 540 motor and it just smokes and cant even move the engine.

tomahawk44

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Rick, thats what i'm talking about, i've been flying planes for a while and i've had some trouble starting those ABC type, my box does the same thing, just fries!!! I have some extra starters, maybe i'll try something like you have, how many amps does your battery have, My box has 14.4 volts-- Big Deal-- Give me the AMPS.... Thanks for your help..