For what ever reason could be, in my opinion, this is what I fear could happen at 30° tilt with the boom touching the flat water !!
Claudio
but when you are on a run and the sail is out…the boat generally doesn’t heel over… again I did the same setup with my footy and had no issues…with the club dragging…
As I wrote “what ever reason could be” is better to anticipate any events, just a simple precaution !
ClaudioD
valid point… but a straight club is super simple to make. and right now I’m going simple… 
I guess I coudl alwasy go with a two peice like you did with a brace…if I need to…
The two pieces revealed to be the wrong choice as depicted above,
I made a new single balsa/carbon fiber boom as in the picture : light and strong !
ClaudioD
Making the boom out of fibreglass rather than carbon fibre will ensure that sail tension induces a slight curve anyway.
Martin
it may work !
Try and let us know
ClaudioD
looks nice claudio
I don’t have any carbon matting or plates. I do have some carbon/nomex sandwich. but if I do with a 2 peice with brace like you used that failed. could i not use aluminum bar as the joiner material since it looks like your aluminum tube is what failed…
just thinking out loud… of course I could always cut the carbon/nomex sandwitch to the shape I need and then sand off the the nomex and affix balsa…
I’m not familiar with carbon/nomex sandwich !
ClaudioD
carbon plate on each side with corogated nomex between… 1/8" and 1/4" thickness. very light. I use it for midship thwarts for servo mounting…
http://www.acp-composites.com/home.php?cat=4707
860 grams
with hatch cover, 910mah 2 cell lipo, and spektrum reciever
keel with bulb weighs 480g
keel fin is a carbon/basla heli rotor
all I have left to do is trim the rudder tube flush and seal around the hole. and seal up around the keel/hull joint with some silicone caulk…which knowing me will take 2 weeks…
That looks quite close to my original set-up, which had unmanageable weather helm. Had to fit a 4" crane to the mast to move the CE forward. It didn’t occur to me to do same basic geometry first.
If this may help !
are two different RG65 with different Delta Rig setting.
It is very important to adjust the CE according to CLR.
Depends on the shape of the boats , the advance may change from 6% to 12% .
In one of the two I used a crane to allow fine adjustments, but it may induce mast twisting unless wires are used from spreaders tips to astern.
The important set-up is that first the sail is positioned on the drawing at the correct place according to CE and Advance and from there, it is decided how to make the mast rig. Starting from an already mast position, it become difficult to place the sail.
Cheers
Claudio
claudio. I have done the measurements on the sail for CE, and I’m swagging on the CLR and I’ve go the CE right on the leading edge of the keel… but I can move the mast forward and backwards, as well as the jib attachment point so I shoudl be able to fine tune it plus my mast crane is not a permanent fixtue so if I need to alter it I can…
well I made a new jib and moved it further forward lostteh weather helm … Good strong boat in light air.
Well the round ranger has been scrapped, and I’m working on a pakinto “Two Face” which is being built as a sloop, and as a delta rig on the same deck…
I really feel the benefits of the delta rig in light air are not to be ignored. but I also realize that once the wind picks up, switching to a conventional rig that is easier to detune may be a good option.
the sticky wicket is getting the jib club to clear the foredeck of the pakinto…so wee shall see…
pic of Two Face with a delta rig
Hello Claudio,
I’m the Brian Eiland of RunningTideYachts,…with that crazy aft-mast, mast-aft, what ever we call it rig design. I like to refer to mine as a 'single-masted ketch. I’ve promoted that rig for many years,…on again, off again as I had time for it in between running a few businesses. I’m now retired, and just recently dug an old model of that vessel out of storage for display in my new ‘florida room’ It got me excited once again to prove to a lot of the naysayers that this rig will work,…and very well!
Not having the money to build a full size version, or even a half size version I will have to limit myself to a model testing. Here is a new subject thread I started just recently on another forum where I had posting a long running subject thread on the aftmast rig
Model Tests: [b][u]http://www.boatdesign.net/forums/sailboats/scale-model-testing-sailing-rigs-outdoors-52977.html[/u][/b]
Aft Mast Rig: [b][u]http://www.boatdesign.net/forums/sailboats/aftmast-rigs-623.html#post23390[/u][/b]
Origination & Justification: [b][u]http://www.boatdesign.net/forums/sailboats/aftmast-rigs-623-7.html#post198605[/u][/b]
Would you be interested in helping me bring this rig to life,…in any manner you might care to help?
PS: Haven’t had time to read thru this subject thread yet, and may not for several days as I have some pending outdoor work to do on new residence here in Florida, but if anyone else is interested I’m open to all suggestions, hints, etc
Hi Brian,
Why not !
You remember, some years ago you wrote to me about the Staysail project.
At that time I did the CD-Cat and later an RG65 based on the same design.
Marc Smith and me we were invited by Model Yachting to write an article on the subject.
Since due to lack of interest demonstrated in various forums, nothing more was done from my side.
I remember that one French guy wrote : "…if this configuration is not visible in the harbors is because doesn’t work …
If a next construction will be done, I would try to use a “dual Jib”, but this event is not yet in my agenda.
Cheers
Claudio