Well,, second run of the Miss Budweiser was not successful.
When initially taking off to get up on plane,, & just rolling the throttle on slowly,, so the bow wouldn't submerge,, it snapped the wire drive shaft clean off the end of the motor collet.
That shouldn't of happened,, & also found a carbon trace on the end of the piano wire where it failed.
That carbon piano wire drive,, I had specially made,, & the Guy is making me a new one,, plus another as well,, that's .013 larger diameter,, & motor collet for that one as well.
He said that's never happened @ that spot before in the 20 years making them,, & ones that have failed,, generally snap down @ the prop end.
Obviously it was bad crappy wire.
Anyways,,
When the MB drive failed,, it was pretty much impossible to get it back with the ''little'' rescue retriever that had a cow catcher on it,, as the wind started blowing,, & making chop on the water.
After trying for about 20 min. to get it back,, it pretty much had drifted to the middle of the pond @ that point,, & I then said ''F'' it,, & will just wait for it to drift to the other shore side.
Finally got it back after 45 min. or so,, & decided then to pack up & go home.
I then started doing research on retriever boat kit's & designs out there,, & found a Hacker kit out of Europe, That had an ''air'' thrust vectoring set up on it,, kinda like an air boat,, but the vector steering on the pivot mounted motor & prop,, eliminates air or water assist rudder.
That basic foam block kit with just some bits of plastic & wood support stringers ect.,, but ''no'' included power system,, is like 100 bucks plus ship !!
Then thought to myself ''F'' that !! ,, I have a cool piece of : 27 by 18,, plastic type ''laminated'' foam that I got from work,, & will just design & make my own.
After thinking out my design for a couple of days,, I came up with the - '' AVR ''.
AVR stands for,,, -'' Air Vector Rescue''.
Had enough stuff for it laying around,, except for the motor, ESC,, & prop.
Got the motor & ESC from a Buddy,, & a bag of 4 props from a racing Drone place in Cal.
Have a total of 20 bucks in it,, plus 3 spare props.
AUW came out to 25ozs.,, which gives it a thrust to weight ratio of around 1.2 - 1
Motor is a 2200 kv,, & powered by a 1600- 3s- 55c lipo,, with top rpms around 30k.
The prop choice I came up with,, is a real wick'd - Emax - 5 inch racing Drone type,, with a butt load of pitch !!
The pivot motor mount,, I made from a boat strut & stinger assy.,, that I bought a couple so years ago,, to use the duel pick up rudder off it,, to incorporate on the Miss Budweiser,, & knew I would eventially find a use for the rest of it.
The motor mount post assy. ,, is 2 sleeved carbon tubes,, which works real slick & stout.
A servo in the little radio gear tub, connects to that mount assy.,, & vector steers the pivot motor assy.
I also made the motor sub mount, & servo arm bracket,, out of aluminum.
The reciever & Transmitter,, have adjustable Gyro functions,, & that helps a lot in keeping the boat going strait on land.
I layered the bottom with real good quality Hockey tape,, as that stuff is real slick & strong !!
Haven't tried it in water yet ,, but does well on the drive way,, & will do way better in the water & on snow .
The opening between the front sponsons,, will capture the back half of both my 12th scale Hydro's nicely.
I
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