I finally got a GPS in the boat. 32 mph on the 51mm on 4S. Not as fast as I thought. I guess boats always look faster than they are really going. Fast enough for me for now.
Junior Member
I finally got a GPS in the boat. 32 mph on the 51mm on 4S. Not as fast as I thought. I guess boats always look faster than they are really going. Fast enough for me for now.
Fast Electric Addict!
I'm surprised it didn't go faster. I just got an impulse 31 and I took the motor out of my son's shockwave and on 6s it does 45.7 with am m645 prop.
32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was
Junior Member
Just ran the speed calculator on the Graupner 51mm x 1.4 on 1500 kv and 4S. Maybe 32 mph isn't too far off. I derated by batteries a bit because they're a little bit old.
Speed Calc.jpg
Used the calculator your m645 on 1500 kv and a good 6S and seems like you should have got better than 45.7 mph out of it. It estimated 54 mph.
Speed Calc 2.jpg
Fast Electric Addict!
I got 39.5 out of mine with a castle 1512 2650kv motor on 3s I think. 4s was uncontrollable. So the limit for this hull for being controllable us about 40 mph. I did add some stick on wheel weight to the front to help it. I noticed the other day my son added weights to the right side of his to stop the prop walk. His goes straight too.
32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was
Junior Member
Not to interrupt the conversation but I am new to boats and bought a proboat 26 hull and some way overkill electronics with plans to upgrade I have hobbywing seaking 120amp v3 and a 2100kv motor and was wondering if someone could recommend me a 4s pack that fits well would like to run a single pack in stock location I ran it with 2 standard sized 2s 5200 packs on sides was super fast but flipped easily due to extra weight
Junior Member
anyone with any input on my question?????????????????????Originally Posted by coryalvord
Fast Electric Addict!
i answered it in the other thread you posted the same question in. measure your boat where the battery fits...then look on the revolectrix website for dimensions...
32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was
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