Now accepting Canard plans

[AndyKunz]

How do you find this stuff? LOL

Have you contacted Ken Joye yet? I mentioned him back at the beginning of this thread. You can find him on RRR or thru www.mmeu.com

Andy

[Meniscus]

785,

Good links. Keep them coming! I can't figure out where he's fitting 14 cells, LOL!


Andy,

I haven't had the chance to contact him yet. I wanted to get my act together a little and ask the pertinent questions I may have.

I do remember your post and I've got it marked for action. Thanks!

[785boats]

Ben.
An observation.
Since seeing all these pictures lately & Simons brilliant photos, there are two things I would change on the dimensions of my original drawings if I were to make another one.
1) shorten the wings by 20mm (3/4") each
2) make the rear sponsons 20mm (3/4") narrower.
This would reduce the overall width by 80mm (3-3/16")
This should reduce some of the lift, so the strut angle could be leveled out a bit.
It was originaly designed for a 700 brushed motor with 12/14 cells & I thought it would need a lot of lift for that weight.
Now that it has a brushless & 4s lipo the weight is a lot less.
This may or may not help in your design efforts.
My only option to reduce lift now is to take the top skin off the wings (which are split anyway) , sand some of the wing section away to make them thiner and reskin them. I'll do this when I repaint the old girl.

Cheers.
Paul.

[Meniscus]

Good ideas Paul.

I'm considering making the rear sponsons much like a rigger. Meaning, they will have booms. This way I can lay other material or create downforce/lift as needed. At least, that's what I'm currently contemplating.

[ED66677]

that's certainly a very good idea, the front boom could be fixed while the rear one could, by moving it up or down, let you adjust sponson's angle!
that said you might not even want to put any wing for the first test to avoid aerodynamic undesired effect, when the canard is tuned, just add a flat board under booms with the front pointing upward to test ground effect, remember that the thicker the airfoil is, the earlier (in speed) it will be efficient, playing with airfoils can be "dangerous" and "parasite", at different speed it will create different lift effect, a flat board will basically not creates aerodynamic lift, only ground effect!

[ED66677]

Meniscus, I found this one interresting for you http://www.fastelectricsrfun.co.uk/miss_stress_2.htm

[Meniscus]

Intriguing! I've seen a few of these concept incorporated in some full size boats, but I haven't seen one like that.

Thanks for the link!

[Meniscus]

Here's a new picture I've found:

[ED66677]

Hudge!

[nate]

Ugghhh There so damn Ugly!!!! lol I heard there fast tho.

[785boats]

Man!!! That's a serious piece of work.

[Meniscus]

I can't even imagine what speed that thing goes when it's tuned. Even not electric!

Sorry for the oversized pic screwing up the forum experience, LOL!

[questtek]

Hopefully I can all to your pool of information on canard RC boats.

From the attached pictures you will see two different types of canard boats, one yellow and two white, representing three experimental propulsion options.

The yellow canard is from Aeromarine, and was previously mentioned in the thread. This is a very well made fiberglass boat with hull number 8905. I originally considered the basic design of this boat to be a candidate for a unique mode of transportation (in Dubai, the only place in the world something like this could happen) that combines a car, boat and submersible. The Aeromarine hull represented a 1/7th scale model. I incorporated a unique prototype propulsion system I designed that had both propeller and wheel. This is shown in the picture, where two such units were mounted underneath the canard.

Currently I am planning to remove this dual land/sea propulsion system and mount a large brushless inrunner. The motor I am holding in the picture has a max power output of 6.6 KW, on 10-12 LiPo's pulling 120 amps max. The KV is 16 and the shaft size is 12 mm. This is a works in progress since I developed a very unique, unconventional cooling system for the motor and ESC.

The white canards shown have two different experimental propulsion systems. The first uses a Feigao FG540XL, 2984KV inrunner brushless motor driving a jet pump. I know the first reaction is that this will not work at high speed since the jet water intake will probably be out of the water. Indeed this is correct but the application for this boat is NOT high speed rather an oceanographic research platform with a small Pentium computer, u/w cameras and sensors designed to do inshore monitoring where weeds and kelp may be a problem. At slow speed the intake remains submerged and is quite effective for this very specific application.

The second white canard also has a rather unique propulsion system I designed and built. It is a brushless motor of about 3,000 watts in a special underwater housing. In this case the motor and housing are underwater. Again, this is experimental with the intent other than pure high speed. In this configuration I have maximum interior volume for oceanographic monitoring equipment. Motor cooling problems are obviously minimized in this configuration.

Hope you find the above useful………..or at least a bit interesting!
Professor Joe Valencic

[questtek]

I just remembered that I posted information on the canards at my blog on RC groups. You can scroll down to near the end and find the two canard blogs I referenced. Again, hope it gives you some creative ideas!

http://www.rcgroups.com/forums/member.php?u=117430

[Meniscus]

questtek,

Welcome to the forum. I looked at your page and have looked at some of your work. I'm glad to see others thinking about unconventional applications. I hope you frequent this forum and share your build and experience.

Thanks for taking the time to share your Canard and I look forward to seeing a video of it working.