The other Supercat was a tall rig -- written right there on his registration form, so he started with the same base PN as the Roberts boat. But the other boat had four modification factors, as opposed to two for the Roberts boat.

Bill,

Is that pole footed jib original equipment for the SC20TR? A friend of mine ordered a set of sails from Aquarius for his SC20TR and got a jib that looked like a hankerchief and was not pole footed. However, I haven't seen his boat in a while and I understand there were some issues with his sails that have since been resolved. The jib might have been part of those issues.

... I thought the "pole-fitted" jib was/is the ARC22 configuration/design. And the SC20 jib was above the junction of the front forstays?? (yes, the SC20 jib is much smaller then the ARC22 jib)

He did get his sails straight through some kind of intervention from Haberman and Roberts, and now uses the "pelican" striker to foot his jib to the spin pole. Very neat system, hope it works better than his old(brand new) sails we used at the Mug last year. The jib sucked in a big way!

Dave Mosley
www.seacats.org

Marschassault,

And to your point, I thought the Tall Rig SC20 simply had the ARC22 mast and sails. My eyeballs are starting to swirl.

Hi Jake,
The self tacking jibs became standard on all SC products in 1992. The self tacking jibs are smaller in area than the old manual tacking jibs. The self tackers are longer in luff length but shorter in foot measurement relative to the old manual tacking jibs. On the SC20 self tacker the jib luff is 2ft longer than the old standard jib and the foot is about 2.5ft shorter. The jib sheeting point for the self tacker is on the front of the front beam and the manual tacker jib sheeting point was 3ft aft of the front beam on the tramp track. The self tacker jibs on all SC products, 15,17,19,20 are all smaller in area than the old standard tacker jibs on the same boat.
Bill

well done Bill

Bill,
So if I was ordering main and jib for a stock SC20 produced on or after 1992...(self tacking Jib), it would be the same cut as the stock ARC22?

Hi All,

I own the second supercat in question, sail 2032. I have a short rig, oversized jib, square top main, screecher (hooter) and three harnesses. We had three people on our boat. I talked to Rick and he said he would take off the TR but I guess he forgot. It became a non issue when we did not finish.

We set up at Gilberts but we were behind the warehouse. We were working on our boat the entire night before and morning trying to get it back together after we had some damage at the Hirams Haul. We have have been developing the boat to a new sail configuration and did not have enough time to reinforce the hulls before Hirams.

Hope these answers a few questions. you can also go to our website.

Craig

TeamCyberspeed.com

Thom,
According to the registration the other SC20 had an oversize jib and a third set of trap wires and I guess it sailed with three people on board. The oversize jib had the jib tack on the spinnaker pole and sheeted to the old jib trim point about 3ft aft of the main beam on the tramp track. This makes a Genoa type jib something like the old TheMightyHobie18.
This boat received the same corrections for square top mainsail and spinnaker/gennaker as our SC20TR plus he picked up .981 for the genoa jib and .995 for the additional trap wire set. This gets you to 59.2 from 60.6.
Bill

Jake,
The forestay on the SC20 is one foot closer to the mast than on the ARC22 rig plan. Therefore to make a 22 jib work on a 20TR the foot must be shortened one foot and the leech must receive a big undercut, about 8 inches, to clear the mast diamond spreader.
Jake, just to have the history right: The 20TR came out in 1981 and the ARC22 in 1992. The ARC22 uses the same mast and mainsail as the 20TR. The jib on the 20TR is skinnier by one foot because the forestay is one foot closer to the mast than on the 22.
Bill

You're not helping my eye swirling problem but I'm with you now. Thanks!

Thanks Bill/Eric-

I hope to heave my FMS20 back in my hands soon [if Caldwell ever gets through] and was very interested in rigging it. Also thanks dor the clarification Team Cyberspace.

thom

Not exactly Marschassault. The fore triangle of the 20TR is one foot shorter than the 22. Therefore the foot of the jib is one foot shorter than the foot of a 22 jib. This is one foot out of seven feet or about a 14% reduction in jib sail area relative to the 22 jib. The mainsails are the same.
Bill

SC20TR as sailed in Steeplechase

Main = 27 sq. mtr = 290 sq ft.
Jib = about 5 sq.mtr. = 54 sq. mtr.

Only some 90 sq.mtr more than the I-20's on a mast being what ? 6 ft taller ?

What size spinnaker was used on the SC20TR ?

Wouter

Bill,
I guess that’s where I was going…. You get the extra ~12inches on the luff edge. And by lowering your tack corner from the normal position on the SC20 to the 22’s tack corner mount on the spin pole, you increase your luff edge. Doesn’t this increase your foot potential…. even if you’re running a forward-of-the-beam self tacking jib car?

One thing I noticed about your setup is that you run your spin pole in a low position (similar to the ARC22). Is there an optimum spin pole angle of entry for the SC20, or does it depend on what head sail your planning to fly off it? Did this low angle of entry, and having the lower jib tack corner, create any problems for you or is it a non-factor? This winter I’m going to attempt to engineer and mount a spin pole on my SC20TR and I was going to attempt to engineer mine very similar to the ARC22. Any feedback on optimum or desired mounting angles for the spin pole on a SC20TR would be greatly appreciated…!

You know, people can knock the boat (SC20’s), and compare them to or try to refute comparison to….. the new “high $$” boats on the market today….. But on that day, in that boat…. Eric and You were the champions! GREAT JOB! People that have never sailed on a SC20 will never understand how magnificent that boat is and what a pleasure that boat is to sail, thank you!

Bobby

Hi Bobby,
Thank you very much for your praise and confidence in the SC20.
The ARC22 system design has many goals/uses. If you have an old worn out SC20, all hardware and rigging from the 20 is interchangeable to a set of bare 22 hulls. Everything on the 22 is the same as the 20 including centerboards and rudders and gudgens and tramp tracks and trampoline and beams, etc. The 22 hulls are simply 20 hulls with two feet added to the bows to increase the hull fineness ratio and increase the pitch stability. The self tacking jib is an upgrade that can be part of a spinnaker pole set up or without the spin pole simply use a foot tube from the main beam to the jib tack point.
The spin pole set up on my 20 is identical to the one on the 22. The lower pole position leads to a longer luff jib and taller spinnaker. Long luffs are faster. Along the luff of a sail is where the action is; that's where the forward pull is, front third of the sail.
You don't have to engineer anything to put a spin pole on your 20. Just copy the 22 or buy the parts from Aquarius Sails. E mail me if I can help.
Bill

Will Do - Thanks Bill !

I’ll keep you apprised of my progress – Happy Holidays to you and your family!

Bobby - Bill is right, just grab what you need off of Roger's boat! I won't tell if you won't!

Keith,

I have to do something to keep away from those #$%@ Hobbie 20's, they just keep running into me! Need to sail faster... Need to sail faster... Need to sail faster...



Happy Holidays Dude!