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jayt - haha, yeah that is kind of what i figured. the packs i am running are matched powerizer 2200mah 9.6v ni-mh 8 cell packs. they would appear to be more like AA size than sub-c. i was originally only running one at a time, but got a little adventurous. i'm curious if there is any way to...

Thanks for the replies thus far, I appreciate any information or opinions anyone has. One thing I forgot to mention that is probably a little bit pertinent: The boat is not direct drive. I have a 2.5:1 reduction gear system in place. This is probably why I have not blown up the 600 motor as...

I decided that the cost of 600 motor would be worth seeing the boat run on 19.2 volts so i hooked up both 8 cell 9.6v packs. it was awesome!! steering is quite touchy at high speeds, but the worst that happened was a couple of spin-outs. i also found out the hard way that i had not put any...

I am currently upgrading and tweaking an old RC boat I have had for about 17 years now. Its a Graupner Hydrospeed Cobra. I started with a graupner speed 500 race motor and upgraded it to a 600. I upgraded the stock 42mm prop with 1.4 pitch to a 42 mm with 1.6 pitch and then upgraded the...