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Sullivan Dynatron starter problems

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16 Dec 2018 20:00 #18449 by Kevin Ross
Sullivan Dynatron starter problems was created by Kevin Ross
The power of my Sullivan Dynatron starter has deteriorated and using double batteries caused the trigger to weld together. (despite it being rated unto 24V. A search on the internet revealed this is common problem which is very disappointing when they currently retail ITRO £115.

My solution is to switch the current with a 70A automotive relay. Ive added extra standoffs to the rear cover.
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16 Dec 2018 20:44 #18450 by Kevin Ross
Replied by Kevin Ross on topic Sullivan Dynatron starter problems
continued

Ive added an extra high tech moulded cap (from an aerosol spray can). Then tin bashed some spare stainless to make a Li-po battery tray - more high tech (well a couple of bending machine (two bars and big mallet)
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16 Dec 2018 20:48 - 16 Dec 2018 20:51 #18451 by Kevin Ross
Replied by Kevin Ross on topic Sullivan Dynatron starter problems
continued

Finally, in order to use any range of Lipo from 3s to 6s, I needed to maintain a 12v supply for the relay. I modified a JST balance lead to tap the third cell and provide a nominal 12v supply with respect to battery negative.
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Last edit: 16 Dec 2018 20:51 by Kevin Ross.

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17 Dec 2018 07:28 - 17 Dec 2018 07:29 #18452 by John Ireland
Replied by John Ireland on topic Sullivan Dynatron starter problems
Nice fix Kevin.
Ps you are welcome to my old Dynatron in exchange for those LED lights I nabbed of of you. it was working fine last time I tried it :)
Last edit: 17 Dec 2018 07:29 by John Ireland.

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