I am a boating noob, so here's a question. It seems to take a little while to get onto a plane. Is this becasue its under powered only being run on 4s, or should I adjust the trim tabs, or the COG?
Nice boat LD, looks like it needs more power to me. Did you got the programming card? Ramp up the boost a bit for some extra RPM if your temps allow, then go up to 6S.
Yeah run time will suck, but you will know if you are going in the right direction with it then. I did some googeling to see what card that uses and TBH there is Sweet FA in the way of information. You might need to try suport to see if they know, most likely it is the HKSS card.
be careful running 6s mate it will put you into the 48000rpm range. We owuld only run that high for straight line speed runs. This is a pic of mynew 2200kv on 6s setup for saw racing. I expect to pull between 350 and 400 amps.
So please try a larger prop on 4s before going to 6s. Big boats need a big prop to get them up and moving.
be careful running 6s mate it will put you into the 48000rpm range. We owuld only run that high for straight line speed runs. This is a pic of mynew 2200kv on 6s setup for saw racing. I expect to pull between 350 and 400 amps.
View attachment 15388
So please try a larger prop on 4s before going to 6s. Big boats need a big prop to get them up and moving.
I went to Coles today and bought a plastic water proof container for my rx battery, rx and BEC. It works a treat and makes the setup looks nice and tidy.
measure total length of boat and find what 25 and 30% of that figure is. In your case it is 260mm to 315mm from the transom put 2 pencil marks. Find a piece of tube to lay the boat on 1 side. roll the boat back and forth until you find the balance point. Then see if it lines up with your marks. If it doesnt move some weight (batteries ) around to suit. We always build a boat from scratch with this in mind and mock the setup till we find the right positioning for everything. You can afford to be under 30% in the Osprey
Cheers mate and keep asking questions and I will do my best to answer for you. Last thing you want to do is lunch something when you dont have to. I certainly have.
I just marked two lines on the bottom of the hull, one at 260mm and one at 315mm. So my COG should be in the middle of these lines???
I then put the boat on its side on a broom handle and moved the lipo around until the hull balances in between these lines?? if so then my COG is now correct and was WAY OUT!
Great work mate that is the correct way to do it. That would be why you struggled to get on the plane. So the 30% mark is for rough water and about 27% for smooth water.
When I took the Osprey out today (with incorrect COG) I added positive angle to the strut which to me, helped with the plane.
But now I have CORRECT COG, should I put the strut back to neutral and make adjustments if required?
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