Electric Starter on 24volts?
11-25-2003, 05:49 PM
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Electric Starter on 24volts?
I have a Sullivan Dynatron starter. Can you run this on 24 volts? I need to crank a brand new 1.5 engine and the Dynatron will turn it over, but not spin it fast enough to start. I think I read somewhere that you could run this starter on 24 volts without burning it up. Just want to make sure.
Thanks,
James
Thanks,
James
12-02-2003, 10:40 PM
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RE: Electric Starter on 24volts?
Hummm,....... That surprises me that you burned it up. The Sullivan Dynatron is rated for 12 or 24 volts. I used mine at 24 volts to start a Moki 2.10 and I use it at 12 volts to start a G-38 and have never had a bit of problems. Also, It will strain the system if both of your batteries are not fully charged too.
FUZZ
FUZZ
12-03-2003, 12:51 PM
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RE: Electric Starter on 24volts?
Guy's, the dynatron is a 24V starter. I have two, the first was fed into the prop of a G-62 in the starting process and it bent the shaft. We streightened it on a drill press but it has never been the same. That one is religated to small engines and 12v now. The second one is on a miller belt driven starter cup and sees 24 volts all the time.
Now the thing that "burns out" starters is stalling them or over loading them. This over heats the brushes and melts them onto the comontator (I think that is what it is called, anyway the thing the brushes mate to on the armature). If you simply sand this stuff off and clear any between the plates og the comontator your starter will start to turn with some authority again.
Good luck
Joe
Now the thing that "burns out" starters is stalling them or over loading them. This over heats the brushes and melts them onto the comontator (I think that is what it is called, anyway the thing the brushes mate to on the armature). If you simply sand this stuff off and clear any between the plates og the comontator your starter will start to turn with some authority again.
Good luck
Joe
12-03-2003, 01:31 PM
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RE: Electric Starter on 24volts?
For what it's worth 
K&S sells a rubber battery mount that holds two (2) 6 or 7 cell car batteries. Lighter and more compact than a gell cell portable.
The heli guys in this area use them.
They are designed to fit a Hobbico or equivalent (TH) starter, but I found a way to mount them to the Dynatron.
Works very well. Turns over my Saito 1.80 easily. (with cheap TH HD Starter ... $37.00 on sale? - second unit for me)
Use it with the Miller drive and dynatron i ... t turns over my DA-50R easily as well.
Even with extended use (hard start DA-50) no burn-out problems. I'm using two 6 cell car batteries of 1500ma capacity.
Have Fun ! [8D]
K&S sells a rubber battery mount that holds two (2) 6 or 7 cell car batteries. Lighter and more compact than a gell cell portable.
The heli guys in this area use them.
They are designed to fit a Hobbico or equivalent (TH) starter, but I found a way to mount them to the Dynatron.
Works very well. Turns over my Saito 1.80 easily. (with cheap TH HD Starter ... $37.00 on sale? - second unit for me)
Use it with the Miller drive and dynatron i ... t turns over my DA-50R easily as well.
Even with extended use (hard start DA-50) no burn-out problems. I'm using two 6 cell car batteries of 1500ma capacity.
Have Fun ! [8D]
12-03-2003, 02:40 PM
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RE: Electric Starter on 24volts?
I was trying to be careful and only using short bursts. Something sparked and it went up in smoke. I took it apart and two wires from the stator were outside of the housing and appears that they shorted out against the case.
12-03-2003, 03:53 PM
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RE: Electric Starter on 24volts?
Its two wires from the stator winding. They came out of the gaps of the stator and hit the magnets in the housing. It will have to have a new stator.
12-05-2003, 11:18 AM
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RE: Electric Starter on 24volts?
I have both a Sullivan Dynatron and a Sullivan Super-Hi Torque. They are both rated for 24volts. I made a booboo with the Dynatron, replaced the wires with a slight smaller grade inorder to mount bananna plugs on them --- BIG MISTAKE.
The modified Dynatron consistently welds the plate switch (switch is two flat metal plates with an insulator between them -- you push on one plate to touch to the other to activate) together every time I use it -- will eventually added higher grade wiring and hopefully solve that problem. Meanwhile, I picked up the Super-Hi Torgue starter on eBay. It is physically smaller than the Dynatron but easily handles my cold Moki 180.
NOTE: Without exception, these heavy torque starters are designed for intermittent use -- do not sustain them on a hard starting engine, you wil burn them up.
***WARNING***
Be extremely careful with these heavy torque starters on small engines. They can easily overcome hydrolock and ruin your engine.
I put together 2 motorcycle batteries in series and built a starter box around them. I have a motorcycle battery tender that I used to individually charge each battery. It is a little heavy but somewhat portable. Check It Out.
The modified Dynatron consistently welds the plate switch (switch is two flat metal plates with an insulator between them -- you push on one plate to touch to the other to activate) together every time I use it -- will eventually added higher grade wiring and hopefully solve that problem. Meanwhile, I picked up the Super-Hi Torgue starter on eBay. It is physically smaller than the Dynatron but easily handles my cold Moki 180.
NOTE: Without exception, these heavy torque starters are designed for intermittent use -- do not sustain them on a hard starting engine, you wil burn them up.
***WARNING***
Be extremely careful with these heavy torque starters on small engines. They can easily overcome hydrolock and ruin your engine.
I put together 2 motorcycle batteries in series and built a starter box around them. I have a motorcycle battery tender that I used to individually charge each battery. It is a little heavy but somewhat portable. Check It Out.
12-05-2003, 03:24 PM
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RE: Electric Starter on 24volts?
BDCherry
Yes ... 1.2 X 12 = 14.4 Volts
You did well and can pass to the next grade
I didn't say it was 24 Volts .... it was a "for what it's worth statement" that 24 volts wasn't needed for my application, but the K&S portable battery holders were worth looking at. Beats carrying 2 heavy batteries if you DON'T need to.
After my success, other club members are doing the same to start their G-62 engines. A nice neat ,small, portable package.
P.S. Keep the leads short and heavy gage.
I have been told that just shortening the leads on 12 volts helps quit a bit.
Happy Engine Starting !!!
Yes ... 1.2 X 12 = 14.4 Volts
You did well and can pass to the next grade I didn't say it was 24 Volts .... it was a "for what it's worth statement" that 24 volts wasn't needed for my application, but the K&S portable battery holders were worth looking at. Beats carrying 2 heavy batteries if you DON'T need to.
After my success, other club members are doing the same to start their G-62 engines. A nice neat ,small, portable package.
P.S. Keep the leads short and heavy gage.
I have been told that just shortening the leads on 12 volts helps quit a bit.
Happy Engine Starting !!!
