Originally Posted by daksin
Those things spin pretty fast- you'd have to be doing a ton of cranking for a very long time to get any significant flow. Why would you want a manual one?
Seems to me if it were a manual pump it would be gear driven to compensate for the high rpm needed so a person didn't wear out their arm spinning it up, this is assuming it is designed to be used as a manual pump.
Even if it was still high geared it wouldn't be all that difficult to gear it down through various means to get a comfortable spin pace to keep rpms up for desired transfer rate.
Why? No real reason just curious if anyone builds one or has experience with one and with a 5-10 gallon system it would be a simple option IMO.