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Old May 09, 2003, 04:00 AM
Normen Strobel
Guest
n/a Posts
24volt Sullivan Dynatron starter

I needed to upgrade my Sullivan Dynatron starter to the 24volts to start my
large engine. I am using two of the sullivan power packs to do this. It's
a total of 24 cells so thats actaully 28.8volts. It starts the engine no
problems, however it welds the switch together each time. I have to play
around with the switch to pop the weld in order for it to shut off. If I
run it at the 14.4volts it doesn't weld the switch.

Has anybody been successfully using two Sullivan power packs on a starter?
The reason why I did this is because I saw this set-up at a booth in Toledo.
But I'm thinking they never tried it.




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Old May 09, 2003, 04:00 AM
john alt
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

In article <3eba72c6$1_6@corp.newsgroups.com>,
nstrobel@nospam.zoominternet.net says...
> I needed to upgrade my Sullivan Dynatron starter to the 24volts to start my
> large engine. I am using two of the sullivan power packs to do this. It's
> a total of 24 cells so thats actaully 28.8volts. It starts the engine no
> problems, however it welds the switch together each time. I have to play
> around with the switch to pop the weld in order for it to shut off. If I
> run it at the 14.4volts it doesn't weld the switch.
>
> Has anybody been successfully using two Sullivan power packs on a starter?
> The reason why I did this is because I saw this set-up at a booth in Toledo.
> But I'm thinking they never tried it.
>


2 routes you can chose from. You might look at getting heavier contacts.
You can get them at HVAC places, electrical supply houses, or a starter
rebuild place. It will require doing some fabrication to keep the
original style switch, which I assume you want to do for convenience.

Personally, I would look at using a solenoid. Anything automotive, even
a small lawn mower unit should do the job. Don't bother getting one for
28 volts, since any of those will be diesel units and WAY overkill. For
the current you will be drawing, a solenoid is much cheaper than a
relay. Most auto parts stores have a generic ford look-alike on the
shelf that's real cheap. Build a box for it if you want pretty, or "less
ugly".
Old May 09, 2003, 04:01 AM
Flightdeck
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

Hi,

Yeah. Had the save problem with the 24 cell. I originally considered using
an arc supression circut. But, came up with a quick, if not as neat,
solution instead.

I bought a heavy duty relay with a 12VDC coil. I got mine as an automotive
relay used for the banks of high intensity lights on off-road vehicles
(Pep-Boys).

I disconnected the starter motor wire and the battery wire from the switch
and case. This left the switch without any connections. I connected the
starter motor wire directly to the battery wire. I interruped the "Plus"
(+) lead from the starter at the combined battery packs and used the
Normally Open (when no voltage on relay coil) contacts in series with the
lead. I ran a wire from the "Plus" side of ONE pack to one side of the
relay coil. I ran a wire from the other side of the relay coil up to the
starter switch. I ran another wire from the other end of the starter switch
back to the "Negative" (-) side of the same 12 cell battery pack. I used
small tie-wraps to cable the two new wires along the length of the starter
wire.

This way, the starter switch activates only the relay coil. The contacts of
the relay carry the current from the 24 cell pack.

I later modified the rig so that I could use the starter on my smaller 4-C
engines without as much danger of bending a rod if there was too much fuel
in the cylindar. I just put a heavy switch in the (+) line between the two
12 cell packs. With the switch (open) the starter (through the relay
contacts) sees only the voltage from 1 pack.

Guys were borrowing the rig for new and balky engines and using up the
charge on my 24 cell packs. This season, I tossed the special cell packs
when I found a source of small "wet-cell" 12 & 6 volt batteries from a lawn
equipment dealer. I replaced the standard starter cable with a shorter
length of larger diameter wire. I now have it wired with switches so that I
have my choice between open circuit voltages of 12V, 18V, 24V, or 28V.

The wet cells provide more current and battery life. Hoever, because of the
difference between "Open" and "Closed" circuit voltages between the fancy 24
cell packs and the in-series wet-cells, I don't get as much voltage to the
starter motor with the wet cells if I select the "12V" or "24V". However,
the reduced voltage drop under current draw in the larger cable seems to
make up for that. The 28V position really cranks the larger engines.
Because of the weight, I mounted the batteries, relay, and voltage selector
switchs in a little plastic tool tote to which I added a short "tow" handle
and 5" wheels. I now have an "APU" battery system that is good for two full
weekends before charging. I did buy a dual voltage automotive battery
charger for 6V & 12V because I couldn't find just a 6V anymore.

J

"Normen Strobel" <nstrobel@nospam.zoominternet.net> wrote in message
news:3eba72c6$1_6@corp.newsgroups.com...
> I needed to upgrade my Sullivan Dynatron starter to the 24volts to start

my
> large engine. I am using two of the sullivan power packs to do this.

It's
> a total of 24 cells so thats actaully 28.8volts. It starts the engine no
> problems, however it welds the switch together each time. I have to play
> around with the switch to pop the weld in order for it to shut off. If I
> run it at the 14.4volts it doesn't weld the switch.
>
> Has anybody been successfully using two Sullivan power packs on a starter?
> The reason why I did this is because I saw this set-up at a booth in

Toledo.
> But I'm thinking they never tried it.
>
>
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 80,000 Newsgroups - 16 Different Servers! =-----



Old May 09, 2003, 04:01 AM
Ted Brindle
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

I have used the Dynatron with 24 volt (2 gell cells) without a problem for
several years with a Miller Reduction unit. Never had a problem. Ted B.

Normen Strobel wrote:

> I needed to upgrade my Sullivan Dynatron starter to the 24volts to start my
> large engine. I am using two of the sullivan power packs to do this. It's
> a total of 24 cells so thats actaully 28.8volts. It starts the engine no
> problems, however it welds the switch together each time. I have to play
> around with the switch to pop the weld in order for it to shut off. If I
> run it at the 14.4volts it doesn't weld the switch.
>
> Has anybody been successfully using two Sullivan power packs on a starter?
> The reason why I did this is because I saw this set-up at a booth in Toledo.
> But I'm thinking they never tried it.
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 80,000 Newsgroups - 16 Different Servers! =-----


Old May 10, 2003, 04:00 AM
Margaret Campanelli
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

Instead of a 24 volt system, why not use a gear/belt reduction ? That
will provide all the power you need to turn over big engines and
eliminate the problem of the switch welding itself.

Just my $0.02 worth

Micheal H. Gordon wrote:

>I've had the same problem using my Dynatron with 2 sealed lead acid
>batteries. It's happened twice now. My last fix, which is yet to be
>field tested, is the insertion of a fairly heavy compression spring
>between the contacts that's electrically isolated by heat shrink. After
>I use it for a while I'll report back here about any success I may or
>may not have.
>
>john alt wrote:
>
>
>>In article <3eba72c6$1_6@corp.newsgroups.com>,
>>nstrobel@nospam.zoominternet.net says...
>>
>>
>>>I needed to upgrade my Sullivan Dynatron starter to the 24volts to start my
>>>large engine. I am using two of the sullivan power packs to do this. It's
>>>a total of 24 cells so thats actaully 28.8volts. It starts the engine no
>>>problems, however it welds the switch together each time. I have to play
>>>around with the switch to pop the weld in order for it to shut off. If I
>>>run it at the 14.4volts it doesn't weld the switch.
>>>
>>>Has anybody been successfully using two Sullivan power packs on a starter?
>>>The reason why I did this is because I saw this set-up at a booth in Toledo.
>>>But I'm thinking they never tried it.
>>>
>>>
>>>

>>2 routes you can chose from. You might look at getting heavier contacts.
>>You can get them at HVAC places, electrical supply houses, or a starter
>>rebuild place. It will require doing some fabrication to keep the
>>original style switch, which I assume you want to do for convenience.
>>
>>Personally, I would look at using a solenoid. Anything automotive, even
>>a small lawn mower unit should do the job. Don't bother getting one for
>>28 volts, since any of those will be diesel units and WAY overkill. For
>>the current you will be drawing, a solenoid is much cheaper than a
>>relay. Most auto parts stores have a generic ford look-alike on the
>>shelf that's real cheap. Build a box for it if you want pretty, or "less
>>ugly".
>>
>>

>
>
>


Old May 10, 2003, 04:00 AM
Dr1Driver
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

>Instead of a 24 volt system, why not use a gear/belt reduction ?

And where is he going to buy it? They don't grow on trees. They can be very
expensive, large and cumbersome, and a PITA to use and maintain. I second the
suggestion of using an automotive relay.


Dr.1 Driver
"There's a Hun in the sun!"
Old May 13, 2003, 04:00 AM
jeboba
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

The dynatron is made to run on 24 volts. It's rediculous what's happening to
the switch. I would call sullivan and complain.

"Normen Strobel" <nstrobel@nospam.zoominternet.net> wrote in message
news:3eba72c6$1_6@corp.newsgroups.com...
> I needed to upgrade my Sullivan Dynatron starter to the 24volts to start

my
> large engine. I am using two of the sullivan power packs to do this.

It's
> a total of 24 cells so thats actaully 28.8volts. It starts the engine no
> problems, however it welds the switch together each time. I have to play
> around with the switch to pop the weld in order for it to shut off. If I
> run it at the 14.4volts it doesn't weld the switch.
>
> Has anybody been successfully using two Sullivan power packs on a starter?
> The reason why I did this is because I saw this set-up at a booth in

Toledo.
> But I'm thinking they never tried it.
>
>
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 80,000 Newsgroups - 16 Different Servers! =-----



Old May 13, 2003, 04:00 AM
jeboba
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

Have you priced that gear drive? Jeeeeez! About $250 with a starter, $170
without.

"Margaret Campanelli" <m.campanelli@snet.net> wrote in message
news:3EBBDF96.5010006@snet.net...
> Instead of a 24 volt system, why not use a gear/belt reduction ? That
> will provide all the power you need to turn over big engines and
> eliminate the problem of the switch welding itself.
>
> Just my $0.02 worth
>
> Micheal H. Gordon wrote:
>
> >I've had the same problem using my Dynatron with 2 sealed lead acid
> >batteries. It's happened twice now. My last fix, which is yet to be
> >field tested, is the insertion of a fairly heavy compression spring
> >between the contacts that's electrically isolated by heat shrink. After
> >I use it for a while I'll report back here about any success I may or
> >may not have.
> >
> >john alt wrote:
> >
> >
> >>In article <3eba72c6$1_6@corp.newsgroups.com>,
> >>nstrobel@nospam.zoominternet.net says...
> >>
> >>
> >>>I needed to upgrade my Sullivan Dynatron starter to the 24volts to

start my
> >>>large engine. I am using two of the sullivan power packs to do this.

It's
> >>>a total of 24 cells so thats actaully 28.8volts. It starts the engine

no
> >>>problems, however it welds the switch together each time. I have to

play
> >>>around with the switch to pop the weld in order for it to shut off. If

I
> >>>run it at the 14.4volts it doesn't weld the switch.
> >>>
> >>>Has anybody been successfully using two Sullivan power packs on a

starter?
> >>>The reason why I did this is because I saw this set-up at a booth in

Toledo.
> >>>But I'm thinking they never tried it.
> >>>
> >>>
> >>>
> >>2 routes you can chose from. You might look at getting heavier contacts.
> >>You can get them at HVAC places, electrical supply houses, or a starter
> >>rebuild place. It will require doing some fabrication to keep the
> >>original style switch, which I assume you want to do for convenience.
> >>
> >>Personally, I would look at using a solenoid. Anything automotive, even
> >>a small lawn mower unit should do the job. Don't bother getting one for
> >>28 volts, since any of those will be diesel units and WAY overkill. For
> >>the current you will be drawing, a solenoid is much cheaper than a
> >>relay. Most auto parts stores have a generic ford look-alike on the
> >>shelf that's real cheap. Build a box for it if you want pretty, or "less
> >>ugly".
> >>
> >>

> >
> >
> >

>



Old May 13, 2003, 04:00 AM
jeboba
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

You buy it from Miller R/C products. No, they don't have a web site. Look in
RCM for their small ad.

"Dr1Driver" <dr1driver@aol.com> wrote in message
news:20030509231022.09436.00000100@mb-m02.aol.com...
> >Instead of a 24 volt system, why not use a gear/belt reduction ?

>
> And where is he going to buy it? They don't grow on trees. They can be

very
> expensive, large and cumbersome, and a PITA to use and maintain. I second

the
> suggestion of using an automotive relay.
>
>
> Dr.1 Driver
> "There's a Hun in the sun!"



Old May 16, 2003, 04:00 AM
Will Hicks
Guest
n/a Posts
Re: 24volt Sullivan Dynatron starter

Sullivan has designed a new double contact switch for the Megatron
Starter. Perhaps they'll fix your Dynatron up.

--
Will

http://www.willstech.com
http://snurl.com/2mn - Our eBay Stuff

"Normen Strobel" <nstrobel@nospam.zoominternet.net> wrote in message
news:3eba72c6$1_6@corp.newsgroups.com...
> I needed to upgrade my Sullivan Dynatron starter to the 24volts to

start my
> large engine. I am using two of the sullivan power packs to do

this. It's
> a total of 24 cells so thats actaully 28.8volts. It starts the

engine no
> problems, however it welds the switch together each time. I have to

play
> around with the switch to pop the weld in order for it to shut off.

If I
> run it at the 14.4volts it doesn't weld the switch.
>
> Has anybody been successfully using two Sullivan power packs on a

starter?
> The reason why I did this is because I saw this set-up at a booth in

Toledo.
> But I'm thinking they never tried it.
>
>
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 80,000 Newsgroups - 16 Different Servers! =-----



 


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