Simon's 30"mono build

[domwilson]

Do you think that the flat area behind the second step will serve as a planing service?

[Simon.O.]

Interesting design and concept. How do you think the low speed and cornering characteristics will be?

My gut feel is that there is now less hull at the rear and it may turn better. Before it used to corner like a kangaroo on speed.

Do you think that the flat area behind the second step will serve as a planing service?

That flat became necessary to get the running points in a flat line. It used to have a flat there anyway so I do not see too much of an issue.
The concept here is to get it to run on all 3 points of the hull much like my stepped cat.
If it chooses to rise nose up and run on the tail only it will look very cool but I suspect will be a real handful to drive.

I have so many theories and some counteract others so I will wait until I get this one wet.
That is how I did the Step Project on the small cat.
Cut-glue- observe, learn.

[domwilson]

Not the flat on the keel. I was thinking that if the bow is high, would the triangular shaped area act like the front of a hydro sponson with an angle of attack all its own?
It's really thought provoking..

[G Doggett]

I like it.
IMO I would put the full length spray rails (strakes) back on so that they can help prevent water clinging to the hull.
Keep those wild and wacky ideas coming.
Graham.

[crabstick]

my thoughts are it may not be in contact with the water a lot, the steps look like they may act as a ramp and 'pop' the boat out of the water, if you can set it up to run on the back step it might go real quick! it is VERY interesting and im just itching to find out how it goes.

[domwilson]

my thoughts are it may not be in contact with the water a lot, the steps look like they may act as a ramp and 'pop' the boat out of the water, if you can set it up to run on the back step it might go real quick! it is VERY interesting and im just itching to find out how it goes.

That's kind of what I what I was trying to say.

[Simon.O.]

This hull is now on the display shelf in the downstairs lounge. It is rooted, Danny can amend that if required.
The steps were a double edged sword, very very faster but cornering sucked even more. This thing was like a kangaroo on bad drugs.
In a straight line it was insane. Easy 80kmh but I'll never know as the gps is now at the bottom of the pond.

It was going very well, very fast and very straight. then there was a big ball of water and I got to see it right side up with no hatch.
A quick pull in by tennis ball and fishing reel revealed the true damage.

Hatch smashed open, gps gone ( not stuck in properly) side split and deck spit.
Both of these areas have very little internal framing.

My observations.
Stepped monos are fast.
My flood chamber never worked, my problem.
This hull was plagued with problems from day 1.

I have learnt a lot about monos and now know enough to know that I will not have a big one again. I still have my small mono and that is a hoot to drive and flip.

I did have a new prop on there today as I lost my m440 to the pond monster yesterday. The new prop is a stock 3 blader that I am lead to believe is off a SV.
On a 7XL and 4S this is an amazing power combination.

I will now take the guts from this hull and build a strong, heavier cat about 32-36"

I have learnt a lot about hull design and my construction methods during this build and run.
I want to thank all of you who helped me with this project and I'll now draw it to a close.

I'll be back soon with progress on a new XL powered (single) cat.

Thanks all.

[domwilson]

Sorry to hear about your gps. I'm sure it was an interesting and educational experience. I await your next build. I'd like to see your cat. Do you have any design ideas?

[crabstick]

bugger Man.. had a boo boo myself, kicked water into my futaba fasst radio this arvo when running my petrol cat at the beach, its not in bits after being washed with fresh hot water and put on the hot water cyl

again i say though, time for more ply in your boats now they are going fairly quick You will survive such things.

[CornelP]

Sorry to hear that... I lost my first Wildthing because of the 100% balsa body. A small hit and it looks like an origami... with all the fiberglass and epoxy... Doing the hull in ply helped a lot on the second one, as the same hit (concrete bank, kids not careful...) only cracked the very tip. It is now redone and armed with a rubber nose!

[Simon.O.]

time for more ply in your boats now they are going fairly quick You will survive such things.

I hope your radio gets better after a sit in the hot water cupboard.
I'll use a fair bit of ply on the next build and I'll do a lot more hardwood framing too.
Can you PM that supplier of ply again please.

I am still smiling even after todays losses.

[CornelP]

Hey, we all know a loss like this is an invite for a new and better one...

[egneg]

That's a shame about the boat not to mention the loss of a GPS and prop. I have lost a GPS when my boat flipped and sank as well as a few props here and there. I did get the boat back with a fishing pole that had a treble hook and big lead weight. Everything was fine once it dried out.

[G Doggett]

Sorry to hear your mono is no more Simon.
Maybe it didn't appreciate all the strange things you did to its bottom.
You can borrow my GPS anytime you need.
Bit concerned you are talking about a 'SINGLE" engined cat !!!!!
Anybody can build one of those, a man with your flare for the unconventional should settle for nothing less the 2 motors !
Graham.

[Simon.O.]

Maybe it didn't appreciate all the strange things you did to its bottom.
I had a girlfriend that once.........never mind
You can borrow my GPS anytime you need.
Big offer, I hope I can afford it if I lose it.
Bit concerned you are talking about a 'SINGLE" engined cat !!!!!
Anybody can build one of those, a man with your flare for the unconventional should settle for nothing less the 2 motors !
Graham.

You think it will be a single for ever ?? maybe if it really screams on 1 can.
I am still keen to twin the little cat with a pair of 450 heli outrunners.

A new 30"+ Cat hull will cost me less than a esc. I'll do this new one as a single and make it so that I can/may retrofit a set of "L-size" cans in there later.

The 7XL is very keen to grab that SV prop again......it was wicked !!
I had a new wire drive in there too and that is a real success.