Took the boat out in too much air and threw my crew thru the mainsail. I was running a Tiger ST main and a new Tiger main is $1800 without battens. My boat is a TheMightyHobie18 with SX stick and magnum wings(don't use them racing). All the standing rig is SX and one hull is now from an SX. I have been racing the boat open with a 66.8 number, the boat cannot sail to that number with the Tiger main. I have decided to get a squaretop SX main from Whirlwind. So, no wings on when racing, oversized main, smaller self-tacking jib and F18 spin and pole. Basically an SX with non-standard main,jib and spin.

How would you rate it and what number should be applied?

Is there an difference in the regular Hobie 18 hulls and the SX hulls

So this is where I would start:

Hobie 18 SX = 71.3

Square Top Adjustment @ X .995
Spinnaker Adjustment @ X .960

Would "math out" to a 68.10 rating

just curious. and i know its rude, but since you stated how much a new tiger sail is, how much is a new TheMightyHobie18 sail from Chip?

Andrew,
Chip is rushing the sail for me, in fact I ordered it Friday and it is already sewn. The invoice for the sail and custom tapered battens is $1625. This is a pentex main with custom blue batten pockets and trim to match my spin sail, Chip built that as well. Hobie is over $1800 without battens and no customization. Plus the Tiger sails don't like the TheMightyHobie18 mast, they need more pre-bend than the TheMightyHobie18 mast can apply.

This is my thinking as well. The TheMightyHobie18 and H18SX have the same hulls, tramp, rudders and crossbars. The difference is the mast height and main sail size. There is a hit for not running the wings as well that I would apply, wings slow the boat down.

Hit for the main, spin and wings above the SX number?

cool, thanks
when i was looking at a new jib, chip was FANTASTIC to work with. i ended up getting a slightly used one from Robbie, but i really thought Chip went above and beyond to work with me...

I see a hit for using the wings, nothing for taking them off. Am I missing something?

"Any other deviations from standard class configurations, including the addition of wings, can be assessed a penalty of at least 0.995. Multiple deviations may incur multiple penalties. Penalties may be greater than 0.995. Please identify any such modifications and penalties assigned and include with results reported to the handicap committee and Portsmouth Numbers Committee

the standard class configuration for the 18SX is with wings.

Agreed, as I don't think DP-N has an adjustment for taking the wings off.

Undecided is correct. There is a penalty for not using the wings. I haven't looked for it yet but will today.

the penalty is a pain in the butt!... literally!

Ahh Duh!!! Got it it

"Any other deviations from standard class configurations, including the addition of wings, can be assessed a penalty of at least 0.995........

So take the 68.10 X 0.995 for a rating of 67.76 at least this is what I am able to get off the Portsmouth Website.

Here is what I see from the portsmouth 2008 numbers. The SX w/spi is rated 71.3. No wings is a .995 hit, oversized non-standard main is .980 hit. There is no mention of a hit for a smaller than standard jib and no hit for the spi(mine is assymetric). The jib I can understand as there is no gain. The spin I run is quite an improvement over the SX spin so some penalty should apply but what?
I calculate it 71.3 x .980 x .995 = 69.52

Didn't know the boat came with a spinnaker, Not very familiar with all the different TheMightyHobie18 configurations. So used to adding the hit for the older boats. But looking at this; there is only a 0.01 difference in the base rating of the SX vs. the standard and the magnum at 71.4. And they would take a hit for the spinnaker. What are the difference in the regular/magnum H-18 and the SX, Mast, spinnaker, anything else.

Question, is the new main within 5% of Calculated Approximate Sail Area?

Let me get this straight...adding wings to an TheMightyHobie18==> no adjustment.

Subtracting wings from an TheMightyHobie18 SX (or whatever they are called)===> takes a hit

Weird, no?

regular TheMightyHobie18 and Magnum run a 28' stick, SX runs a 29.5'. The Magnum has the shorter wings on it and can be run without them with no penalty. The SX came with long wings and a spin kit was available from the factory, the boat is to be raced with the wings on. The SX spin is a bag launched full cut spin, mine is flat and snuffed on the pole. The SX rating doesn't seem correct but thats all there is to go with.

I'm not sure if the new sail is within 5% of the original or not. There is another boat on the left coast running the same main, "Wind Raider" is the boat. Its pic is on the Whirlwind site.

Yes there is it is .995


That too!!!



Looks like you got yourself a sleeper rating there and should clean up in open class.

Hang on a minute, see this post:


TheMightyHobie18 Wing Mod

where you and others claim there is no mod for an TheMightyHobie18 carrying wings!?!?!

Can anyone explain how you can have two of the same boats one with a larger mast and spin and still have the same number as the other boat with smaller mast and no spin. 18 vs 18 sx.