Simon's Canard.

[nauti-tucu]

I'm sorry what happened.
You must rebuild it and improve it. I very carefully follow this work.
Perhaps this year, I´ll build my first canard ... thank you

[Simon.O.]

Right. The rebuild is underway......wife has camera and is out so pics will come tomorrow.
The rebuild aims :
Make it stronger
Allow it to go faster
Make it look even nicer

I have mapped out the strut position so that will remain the same but adjustable as always
The sides of the tub need a bit more skin as they are old and have a fair bit of battle damage, remember this was built for Ni cells and med turn car cans.

The key points for this rebuild are the sponsons and wings, all are going to be replaced

1. Sponsons.
The existing design is great and the hull is bang on stable at around 75kmh or 45mph +
I need two new sponsons and am considering taking the old ones off my mid size rigger (pics 1+2) as these are good for 50 mph and more. That rigger could go a new set of my saw style sponsons and maybe even a new tub and booms
The existing Canard sponsons have a bit of dihedral whereas the rigger ones are flat, this is very easily and rapidly fixed............if it can be shown to need it.

2. Wings
The existing (ok 1 is blown off and I cut the other off ) have a fair bit of lift as there is a ramp in from the LE on the underside.

I am tempted to build the new wings with a bit less ramp on the underside but build that area out of many layers so that I can sand in a ramp if I need it.

I know I am nuts playing with the Canard design but I can easily say that it THE most beautiful hull I have run, it just floats on a cushion of air with a fine roost and is a real handful to drive. I love it so much that is MUST be rebuilt.

Now I am off to think of some other fleet upgrades.
It is great to be back after a few months of quietness from me.

[Simon.O.]

Work is now well underway for the rebuild.
I have stolen the sponsons off the mid size rigger...and have shot a pic to give an idea of how they will look from the side.
The new wings are coming on well and it will take me most of the week to get them sealed and sanded between work and the humid weather.

The tub has been extended so that the strut is on the transom instead of on a long standoff and the rudder will now be aft of the prop to make turns a bit more positive instead of the skid/drift I had before.

It has now occured to me that there is room for a 500 size OR motor in there for if/when the 7S rolls up its blanket.

There is more to come from this hull.

[carlcisneros]

If the boat still does its' slide/drifting schtick in the turns, make another set of sponsons with
aprox. 7degrees dihedral in the right sponson bottom and arpox, 3-4 degrees dihedral in the left sponson. It is the sponsons that acts like a turn fin in the corners.

just something to think about. :-)

I have built nitro canards in the past back in the day. both scale and rigger types.

[Simon.O.]

If the boat still does its' slide/drifting schtick in the turns, make another set of sponsons with
aprox. 7degrees dihedral in the right sponson bottom and arpox, 3-4 degrees dihedral in the left sponson. It is the sponsons that acts like a turn fin in the corners.

just something to think about. :-)

I have built nitro canards in the past back in the day. both scale and rigger types.

About time someone else with rigger time had a say here !
I agree, the old sponsons had a little dihedral but the "new" sponsons are flat bottomed as they are (stolen/borrowed) off my oldest rigger and are proven to be farkin quick on that hull.

I will deffo run this as all my hulls as a straight line rocket but will have the ability to fit the turn fin if I want some fast hard turns. I really like the slidey style that the old hull had and will have to wait for a while to see how the new setup will perform.

Give me a week or two

[carlcisneros]

cool

[Simon.O.]

This is taking some time as i have a lot of other work on.
This is all I have so far this week......new wings and the whole lot is ready to varnish and assemble soon.

Yes the first pic has a lot of bits there all drying in the sun, some are for the new rigger sponsons.

[peells]

Keep it up, looks like you are in the middle of summer where you live!!

[Simon.O.]

Progress is slow as I have a lot of other stuff on the go.

It is nearly ready for assembly and here is what we have today. Just waiting for some sealer to harden and then I can get on with some epoxy bonding.

Enjoy !!

[peells]

Good work

[nauti-tucu]

Hi:
Look awesome... very nice work

[Simon.O.]

Just Jigging

A few pics of the jigging that I had to do to get these second hand sponsons onto the new wings.

[Simon.O.]

I had it out today with the new sponsons/wings and all looks ok.
The wind and chop was up so there was no chance to wind it up but I can see that it handles differently to before.
It now has a turn fin so it corners better.....no surprise there !!

I will have to wait until the water is flat and then wind it out to see how the new setup works.

This is fun !!

[Meniscus]

Simon, Here's a little information regarding setup of Canards. It may be that your left sponson needs to be adjustable for ride attitude and to get it out of the water.

An excerpt of another article from author: Oliver Siess

"A canard is a special form of a hydro racing boat, the two swimmers at the rear and one or two small floats on the bow has. It can be described as a cross between a 3-point hydro and tunnel boat (catamaran). Most of the dead weight of the boat is moved to the rear and is thus carried by the back floats, which is quite equivalent to the principle of tunnel boats. The right float and the propeller are the mainstays in smooth water, while the left float water has almost no more contact. The right float and the propeller are the mainstays in smooth water, while the left float water contact has almost no more. To catch the counter-torque, some Canard designs up to 15 mm float different heights, which is offset during the journey by the counteracting propeller torque. The boat is as it were "inclined-even". Since the Canards have a tunnel to air dam, a much higher speed as the boat with a tunnel can be achieved. Since the Canards have a tunnel to air dam, a much higher speed as the boat with a tunnel can be achieved. In addition, the Canard-hull shape to another feature, namely that of the nearly uniform curve behavior, without the need for a turn or similar fin stabilizers."


Thought I'd share. Since there's no turn fin to create additional drag and has a neutral aerofoil shape, it makes sense why they say that Canard is the fastest. Whatcha thinkin?

[Simon.O.]

Simon, Here's a little information regarding setup of Canards. It may be that your left sponson needs to be adjustable for ride attitude and to get it out of the water.

At the moment I have trouble keeping the rear down on this one.

Thought I'd share. Since there's no turn fin to create additional drag and has a neutral aerofoil shape, it makes sense why they say that Canard is the fastest. Whatcha thinkin?

I have a fin so that I can haul it round at the narrow end of my pond and still keep it on the plane. On the straight there is no noticeable difference with or without the fin.

Canards are the fastest??.....Very possible but IME riggers are easy to setup and thus are the route to development and speed.

I love my Canard !!