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24 Volt Starting - 12/18/2001 10:13:44 PM   
TopShelf



Posts: 648
Joined: 12/6/2001
From: West Linn, OR, USA
Status: offline 		This is kind of a tip and kind of a question.

I recently needed a little more power out of my puny Hobbico 90 starter. So, I thought, gee I could hook two gel cells up in series and run my starter at 24 volts. It accomplished what I needed but with some obvious drawbacks: 1) my starter won't last as long if I do this on a regular basis and 2) if my engine is hydrolocked, I have a greater chance ruining it.

My intent is to only use 24 volts when it's cold or with a new tight engine. I made up a special adaptor so that I can use it only when needed.

Anybody else have more experience useing 24 volts?

Kent

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He Who is a Slave to the Compass has the Freedom of the Sky.
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24 Volts - 12/19/2001 6:29:19 AM   
Miniair



Posts: 155
Joined: 11/29/2001
From: Medicine Hat, Alberta
Status: offline 		What you're going to do is burn out the windings in the motor, especially if you're putting a heavy load on it.

Rather than use 24V just get the engine wet - not soaking wet - flooded doesn't work and it should spin over. If you're using an aluminum nose cone you can get the starter spinning first then apply it to the nose. Also make sure your prop is backed up to the reverse side of the compression stroke. If your battery is any good it should turn the engine over unless you're trying to turn a large gas engine over then your best bet would be to get a 12/24V starter. Sullivan makes a good one at a reasonable price

< Message edited by Miniair -- Dec 19 2001 6:13AM >


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Jim Rea
jr@miniair.com

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24 Volt Starting - 12/19/2001 6:09:58 PM   
TopShelf



Posts: 648
Joined: 12/6/2001
From: West Linn, OR, USA
Status: offline 		Miniair,

I realize 24 V is not the best long term solution but I have tried everything else that you recommended and just couldn't get the engine to turn over. None of the hobby shops in my area had a sufficient starter in stock so 24V was a good quick solution. I have the Sullivan Dynatron on my Christmas list.

Kent

_____________________________

He Who is a Slave to the Compass has the Freedom of the Sky.
www.TopShelfRC.com

(in reply to TopShelf)
       Post #: 3

24 Volt Starting - 12/19/2001 7:44:08 PM   
Big_Bird



Posts: 3237
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline 		I have used the Dynatron starter on 24 volts and it is really powerful. However, I have also have had trouble with the contacts sticking on the built in switch. The switch seems to be the weak point.
Ken

(in reply to TopShelf)
       Post #: 4

24V Starters - 12/20/2001 6:46:23 AM   
Miniair



Posts: 155
Joined: 11/29/2001
From: Medicine Hat, Alberta
Status: offline 		Never had a problem with mine but I do spray the switch regularly with WD-40 to help keep it clean and WD-40 helps keep the contacts and the switch itself clean. My starter is over 4 years old and never a problem.


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Jim Rea
jr@miniair.com

(in reply to TopShelf)
       Post #: 5

24 Volt Starting - 12/20/2001 8:24:04 AM   
Big_Bird



Posts: 3237
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline 		Thanks Jim, I'll try the WD-40.
Ken

(in reply to TopShelf)
       Post #: 6

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