Model Boat Mayhem
Mess Deck: General Section => Model Boating => Topic started by: richardabeattie on September 25, 2021, 06:58:23 pm
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One of these has turned up in my collection. I know it's an antique but I'd like to use it. It has an adjustment screw but no obvious on/off switch. [/size]I have connected a 7.2v NIMH battery, a Graupner 600 motor and a Futaba R202GF receiver using the middle socket, and I've checked the fuse. Nothing happens. So what am I doing wrong?
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It doesn’t have a BECC, did you put a battery on to the receiver?
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That explains it! Many thanks. Quite tricky adjusting it to stop engines but I got there.
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I have a few in some of my boats…
Great wee ESC I know some people tell me about them being
Inefficienct but they always have worked no problem :-))
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I have three - two still work fine but the 3rd developed a glitch after a few years - intermittent hesitation at full throttle - think the motor drew close on 10 amps - that was a 400 - blew a few 10amp fuses - a 600 possibly a little too much motor for them .
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Nothing wrong with these ESC's -they are a bit chunky and give off plenty of heat though I never remember having one crap out. I regret moving house and recycling them ever since! The spec sheet for them, for what it's worth is very easy available on google.
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Yes, by todays standards they are bulky and of modest performance, but had very good control, and just gave a nice deep hum instead of a high pitched whistle.
Their lack of a built in BEC was not a severe disadvantage. If kept within their limits, particularly voltage, they were solidly reliable. Because of the output transistors that had to be used needing a heavy current to drive them, the drive resistors were right on the edge of their power dissipating ability. Giving them just a bit more voltage caused them to cook both themselves and their surroundings.
But progress happened and the market preferred the resulting smaller, cheaper items with more abilities.