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Old 05-09-2008, 06:36 AM   #1
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Arrow Power Supply???

I have a Trinity monster horspower machine hooked to a car battery in my garage, how many amps do I need as for a power supply?

I want to take my dyno to the track for testing and don't want to carry my car battery!!!!!

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Old 05-09-2008, 08:41 AM   #2
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A 18A-24A size PS should be plenty. You need a PS that can deliver the same amount of amps your motors pull on the dyno.
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Old 05-09-2008, 04:16 PM   #3
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Most motors will pull in excess of 50 amps on a dyno. The Turbodyno 45 is an exception, but most folks with them tend to use a 45 amp power supply.

An 18 to 24 amp power supply won't cut it for dyno use.

Starteur, what kind of dyno will you be taking to the track?
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Old 05-09-2008, 04:27 PM   #4
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I don't think he will be pulling 50 amps on a trinity motor checker, One of those huge fantom dynos yes but not a regular checker.
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Old 05-09-2008, 04:38 PM   #5
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My mistake... if the Trinity machine is what will be going to the track, then yes, the 18 to 24 amp power supply should be plenty to get the job done.
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Old 05-09-2008, 09:25 PM   #6
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Just a what-if..

Why have a power supply that is stronger than the batteries in your car? If you batteries can not put out then that motor will never see those numbers on the track.

Anyways. I have been thinking about putting a 1/2F or 1F audio capacitor with my power supply box. I really don't need it now that I am going to LiPO.
I have noticed that when using a motor checker or starting a charge with NiMH the line voltage on my 32amp P/S drops just a little. Then I have noticed that when NiMH peak, the line voltage jumps. It has been bugging me to thing all those false peaks I have had could have been prevented by keeping the line voltage more stable.
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