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 Advice on a set up

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TonyW
Gunner
Gunner
TonyW

Posts : 181
Join date : 2011-06-12
Age : 66
Location : Newbury, Berkshire

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PostSubject: Advice on a set up   Advice on a set up EmptySun Jun 24, 2012 6:44 am

Hi Guys. I have a set up here that i would like some advice on?. Would a 12volt 7Ah battery work with a Mtroniks Viper Marine 25 ESC, and a 17 stock turn motor that came out of a radio controlled car?. I have other motors if this will not work, 2 540's
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Windy
Gunner
Gunner


Posts : 132
Join date : 2011-12-11
Age : 53
Location : Always at work...

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PostSubject: Re: Advice on a set up   Advice on a set up EmptySun Jun 24, 2012 8:49 am

Hi Tony, most modified car 540s don't like running on 12 volts as they are only designed to run on 7.2v to 9.6v, they are also quite amp hungry, a 17 turn motor will draw on average 12 - 20 amps under normal running (depending on the prop size), with a stall current of well over 40 amps. They don't like being overloaded either and have a no load speed over 28,000 rpm on 7.2 v and over 47,000 on 12v!!!
I used to race fast electrics and with this type of motor running Sanyo 2000 SCRs (showing my age now!!!! Very Happy Very Happy ) I was just about getting 4 minutes running time, just long enough for the race duration.....

What boat is it for??

If you want any more help PM me your phone number.....

Windy....
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TonyW
Gunner
Gunner
TonyW

Posts : 181
Join date : 2011-06-12
Age : 66
Location : Newbury, Berkshire

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PostSubject: Re: Advice on a set up   Advice on a set up EmptySun Jun 24, 2012 5:14 pm

Thank you Windy, that's what i thought i just wanted to hear from somebody else. A 540 it is then. It's under "Any other model boats" under MTB. It's 46" long, and made of wood.
Advice on a set up 100_0151
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Windy
Gunner
Gunner


Posts : 132
Join date : 2011-12-11
Age : 53
Location : Always at work...

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PostSubject: Re: Advice on a set up   Advice on a set up EmptySun Jun 24, 2012 5:40 pm

Hi Tony, I reckon the boat is a bit big for a single 540 motor.... A 700 size would be far more suitable.



W.
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TonyW
Gunner
Gunner
TonyW

Posts : 181
Join date : 2011-06-12
Age : 66
Location : Newbury, Berkshire

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PostSubject: Re: Advice on a set up   Advice on a set up EmptySun Jun 24, 2012 5:50 pm

Thanks Windy i think I've got one of those as well, it came from a rechargeable Hoover. I will try it when i get the rest of the stuff I've ordered from Hobbies.
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