Ran the boat yesterday at the pond. Water was not as rough as it was on Friday ( Still ran very well).
I raised the 1732 prop a bit and the boat seemed to like it. I was even carving up the conrners good and the boat accelerates very well! The boat self launches with an X427 or the 1732, I tend to hand launch the boat cause it's easier on the batteries
This design is a keeper!
The hub on the 1732 prop is clearly out of the water and the motor and esc don't seem to mind the extra amp draw. The batteries on the other hand get a good work out. Not to the point of no-return - The HECELL 1000 Pack is surviving a full run -last a little less than 3 minutes. Still haven't timed it with a stop watch yet. I think that I'm pulling at least 10A. Corner speed is good and the prop does not cavitate.
Also tried the slightly heavier 8-cell AA pack of Rayovak 2000 IC^3, The batteries also worked well, keep in mind these things will hold 10A for over 4 minutes at voltages above 7.9V . For an over the counter consumer battery this is just incredible! You can have an enduro Micro race with batteries like these.
The boat ran well with the X427 but the tail seemed a little low for my taste. I am sure that I can make the boat work with an X-Series (non lifting) prop but it would require a significant amount of down-thrust. I never designed rear-spoons for the boat, but it may be worth a try to keep the speeds up in the corners.
?Question?
Is there an Octura lifting prop that is smaller than the 1732? No need to re-invent the wheel if a prop is readily available.
R&D Notes:
Right Spoons needs a modified anti-trip feature built-in, did an emergency left turn and the right spoon went under... Boat self launches so this is really not a deal breaker. I wonder if changing the right spoon dihedral to 3.5 will do the trick?
Single rear spoon may be the money ticket for very rough water and a non-lift style prop. Got some novell ideas to get this done...
This was my first 100 % flat spoon design (Flat does not mean no dihedral) the results where a lot better than what I expected. The boat launches with incredible ease -Don't even need to launch it for that matter. You can just place it in the water and pull the trigger! I will be incorporating the lessons learned into my Nitro Trident A-Hydro Rigger...
A friend of mine has some DVD footage of the Micro Killer Volt from last Friday. I'll see him this Tuesday, I hope to be able to post something latter in the week.
My wife took a couple of pictures of the boat in action, but the contrast was just not there. Not much can be learned from the pics other than the boat is in full plane. I've attached one to this post.
