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help locating a sx mast
http://www.hobie.com/au/en/forums/viewtopic.php?f=13&t=8691		 Page 1 of 2
Author:  gofastshawn [ Fri Feb 01, 2008 11:44 pm ]
Post subject:  help locating a sx mast
Can anyone tell me where to look for a sx mast.Also are all the sx masts
outfitted with a comptip?I want to switch out my standard mast with a sx
so I can run sqaretop tiger or pentex sails.Thanks
shawn
82 h18 #8211
div3
Author:  JACK FLASH [ Sat Feb 02, 2008 6:58 am ]
Post subject: 
Yes all SX's were made after the comptip came into play so they all have a comptip. I have added a Tiger mast to my SX and have the original SX mast but I am in Houston Texas so I don't know how you would get it. If you are ever coming this way give us a shout. My email address is [email protected]
Author:  gofastshawn [ Sat Feb 02, 2008 12:00 pm ]
Post subject:  reply
How hard was the conversion to tiger mast?
Author:  Tobbera [ Sun Feb 03, 2008 8:50 am ]
Post subject: 
I have a H18SX without combtip.
Author:  H18sailaway [ Sun Feb 03, 2008 9:38 am ]
Post subject: 
hey shawn, check out Whirlwind Sails .com. you don't have to have a sx mast to run square tops or have pentex sails. matter of fact they make a pentex square top for your boat. just F.y.i. dude.
Author:  gofastshawn [ Sun Feb 03, 2008 11:51 am ]
Post subject:  reply to wes
Hey wes thanks, I'm just trying to get alittle more sail area,I believe the sx is one or two sail panels taller.I'm a speed freak,i'm used to flyin down the delta on a 33 ft fountain with two 850 hp blower motors that I built but gas is too expensive to play anymore.I'm up in redding this weekend for superbowl.Catch ya on the lake soon.
shawn
82 h18 #8211
div 3
Author:  JACK FLASH [ Tue Feb 05, 2008 10:56 am ]
Post subject: 
Tobbera wrote:
I have a H18SX without combtip.


Not a factory mast you don't. ALL SX mast from Hobie have a comptip as part of their lawsuit settlement that begun before the SX went into production. A regular 18 mast can however be found still without a comptip. Following are the steps/issues to converting to a Tiger mast.

Issue--Cost--a new Tiger mast is pretty pricey, and used ones are very rare. Most totaled Tigers I found had a totaled mast or no mast at all.

Issue--The Tiger is 6 inches wider than an 18. The hounds are a foot plus higher on the mast than an SX and even more than an 18. Net result, Tiger shrouds and forstay are too long, 18 and 18SX shrouds and forstay are too short. Net result, take boat and mast to rigger to have it measured for new custom rigging. Not really a cost issue but another step none the less.

As for the base there are two options here.

Easy way--Remove the mast base from the Tiger and install the mast base from the 18. Some people say the profiles are different and that it will not work, they are wrong. I have seen it work. The upside to this is simplicity. The down side is you lose the three sheaves at the base of the Tiger mast for the downhaul. Not that you have to have them, your 18 didn't, but they come in handy when you are trying to get that 16:1 downhaul ratio that you will need to depower this beast.

The harder way--Change the step on the front crossbar. This is the way I went. The change over isn't hard but requires a little bit of money. Forget about getting Tiger dolphin striker post and what not because in the US they don't exist as parts. Instead use factory Hobie 20 parts here. You will need the dolphin striker post, the two nuts and washers, the step ball, and the compression sleave. All of these parts are available here and the part numbers can be found in the back of the hobie catalog. To make the swap, loosen your dolphin striker on both side as far as you can go with removing the lock nuts. Drill out the two - four rivets on the mast base (depending on your year model). The base and the dolphin post will not both lift off of the cross bar. The compression sleave requires a 7/8 hole in the front crossbar, drill the top hole only. Using lock tight on the nut install the lower nut and washer and slide the bar up from the underneath the cross bar. The post should be firmly in the receptical still on the striker rod and the lower nut should be firm against the bottom of the cross bar. Drop the compression sleave in from the top, and yes, it is too long but don't mark and cut yet. Tighten both sides of the dolphin striker. I have mine so there is about a half inch of thread showing past the nut on each side. You will not notice the compression sleave is now sticking even higher up out of the crossbar. This is because the crossbar is bowing up slightly (don't go overboard here). Mark the sheave so you can cut it to length. You crossbar is curved for and aft so it will not be a straight cut. Undo everything you have just done and remove the sleave from the crossbar. The easiest way to shape this is to cut with a hacksaw at the highest point and the file it down to your line. The sleave is aluminum so it files rather quickly. If you have a power post sander I am sure it would make even quicker work of this but did it by hand. reinstall and tighten the striker untill the sleave is flush. Using thread locker install the top washer and nut. Now screw on the mast step ball and you are done. Remember, the Tiger post and H20 post are the same with the exception of the threads. You cannot use a Tiger ball on the 20 step or vise versa. After the rigging is made you are done. Enjoy your lighter/stronger mast and forget about ever racing one design with Hobies again. I guess that could be a reason to use the first method, you can change mast and sails to race one design or at nationals.
Author:  ncmbm [ Tue Feb 05, 2008 12:43 pm ]
Post subject: 
Jack,

Toberra is in Sweden where a solid SX mast is a possibility. All US sold SX have comptips.
Author:  JACK FLASH [ Tue Feb 05, 2008 3:35 pm ]
Post subject: 
ncmbm wrote:
Jack,

Toberra is in Sweden where a solid SX mast is a possibility. All US sold SX have comptips.


I didn't catch that, thanks for the correction.
Author:  Jbernier [ Tue Feb 05, 2008 3:47 pm ]
Post subject: 
We have some left over ST mainsails available (through your dealers of course)
Guys have been using these to turbo charge their H18SX's. They aren't class legal...but could be a fun project. For more info call your dealer - colors available are White or Smoke. Cost is 40% off retail. Hurry, while supplies last
Author:  gree2056 [ Tue Feb 05, 2008 7:27 pm ]
Post subject: 
So just how tall is the tiger mast, or I guess the better question would be how tall is the sail...Luff lenght?
Author:  NCSUtrey [ Wed Feb 06, 2008 8:33 am ]
Post subject: 
I've got a spare carbon Nacra 20 mast laying around. It's 32 feet, so you'd have to cut it down to the F18 mast height of 29' 6"


T
Author:  JACK FLASH [ Wed Feb 06, 2008 8:37 am ]
Post subject: 
When laid side by side the SX mast is actually an inch and half longer than the Tiger mast. How ever the Tiger halyard hooking system makes complete use of the mast while the SX has the hook a couple of inches below the top.
Author:  ncmbm [ Fri Feb 08, 2008 5:10 pm ]
Post subject: 
Trey, I'm afraid to ask...........how much?
Author:  gofastshawn [ Sat Feb 09, 2008 12:08 pm ]
Post subject:  thanks
Hey guys and or gals thanx for the info.I sure have alot of ideas during the winter,probably way more than i can afford.The carbon 20 mast sounds awsome but i bet its worth more than my whole boat,ha ha .
As usual I ask and ther are quality answers,time to figure out if I should just keep my all alum mast and try one of the new square top sails.I am a little leary of that just because of the quality issue.Factory sails sure do hold up well.I would like to see in person the new pentexR or aftermarket mylar
for the18 to check out the stitching and general quality.Thanx again
shawn
82 H18 #8211
DIV3
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