Quote:
Originally Posted by fastbaja5b
Just assigned my sidewinder SC speedy to Slash 2wd duty with a 13.5 Brushless. LED's are now dim as all s#it as the BEC is obviously weaker than that of the VXL speedy (or lower voltage), standard 5mm LED's just 4 of them in RPM light buckets up front. Only changed the Castle in there so I could adjust esc timing.
Ended up using a BEC from the Balance tap of my battery direct to the LED's but still bloody disappointing once again on the ESC front. Even $30 Hobbywings have a 6V bec now don't they?
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We went with a 5V BEC on the SCT -- for a very good reason.
There is a certain 2.4ghz receiver on the market that doesn't work right on 6V...
The Hobbywing ESCs use a standard dropout linear -- that means the pack voltage has to be 2V above the BEC voltage, otherwise the BEC voltage follows pack voltage minus 2V. Not really a good solution. But they use it cause its VERY CHEAP.
The SCT uses a low dropout reg, the dropout is about 1V at maximum BEC output power, less than half volt under normal usage.