It's an idea that was sparked when I remembered the ht/a-cat thread. But there is no close HT that I know of for sale. Just exploring options. Unfortunately I have a brand new set of sails that were just built for te 20 mast so it would probably mast more sense to stick with that.
that should answer all your questions <img src="<>/smile.gif" alt="smile" title="smile" height="15" width="15" />
The I20 mast is thick, especially above the hound and the I20 kite is huge compared to the HT kite. My concern would be what would happen if Bach is out having fun with 3 on board (which he does), flying the kite in sporty winds, stuffs a wave, and the mast is not in the best rotation??
Typically the I20 mast survives this. Not sure the HT mast would. Will he have to re-position the spin hound and mast hound on the HT mast, and what affect will that have?
Great discussion, but looks like he will need to find another carbon I20 stick, to complement his investment in new sails.
that should answer all your questions <img src="<>/smile.gif" alt="smile" title="smile" height="15" width="15" />
Wait...what was the question again?
:^)
what is the best rotation?
is it with the rotator (arm) facing straight back (so the spin pulls on the front of the mast...
or rotated 90% (so the pull is on the side of the mast and supported by the diamonds?)
with the kite up, you want the rotator off (running free)
spin pulls sideways...so mast rotated at 90 degrees gets the thickest part of the mast to support the spin loads (particularly since the diamond wires don't go that high).
thanks guys, that's what i thought and how i fly, just making sure.
The Bimare Jav2 circa 2002-2005 mast is tougher than a old school Nokia phone. I have punished my 18HT relentlessly over the past 5 or so years and can say confidently that the mast will survive an I20 application. By the way. That mast is totally class legal in the open 20 class.
I believe that version was made by RIBA composites. Do some homework and you'll be impressed with their product.
Of course the mast doesn't know what it's attached to; it's just a stupid mast. But the boat beneth the mast matters a lot whether or not it will break. Stepping it to a stationary object is not a good comparison. Also wind speed would be a constant in comparing the two boats. Wind doesn't increase when you put a mast up on a N20. Best case in point is downwind sailing, spin up. As you sail down wind the apparent wind decreases the load on the rig. The highest loads will be during acceleration, and when the boat suddenly slows stuffing into waves. Compound that with waves causing the top of the mast to whip. There are much higher stress loads than mounted on a stationary object. Up wind the apparent wind is increasing the wind velocity, add waves again and you'll have much higher stresses than stationary.
Mainly the this will cause over-stress on the mast: Downwind boatspeed is key, if you can maitain boatspeed close to the true wind speed the rig is not under stress even though the boat is moving fast. As waves slow the boat down, pressure on the rig increases. This will happen on a heavy boat to a greater extent than a light boat.
You guys have missed the point of the platform swap. The harm to the mast would be done by the increased weight of the platform creating more righting moment on the mast.Has nothing to do with the wires or any of that stuff. That being said I think the HT mast could handle the task fine with proper boat handling.
If you are concerned about Buckling?
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add SPREADERS if you are really concerned.
jeeze, just let the boy put it on there and have him take pictures or describe the results (snap or no snap).
I have one more option. I could get a blank tornado section from Forte for just under 3,000 clams shipped. Anyone have experience with Forte?
I see in your original post you have new sails for an I-20. I am not sure if i missed this: is the goal solely to have a lighter mast or did you snap your current stick?
The i20 mast is snapped. Getting my sails re-cut for a softer mast isn't a big deal according to my sail maker and will cost about $300 to have it done.
I know a guy that has a carbon I20 stick he wants to get rid of if you're intersted.
I would definitely go for an i20 mast if you can find one. I know someone with an extra I20 stick too. The HT is 3 ft taller and it uses a different mast ball size. I'm sure you can do it but it will be a serious pain to accommodate the change. Good luck and let us know how it goes. Cheers.
The mast ball and related problems are not a huge deal to me, but I would love to hear about the i20 mast.
Check your PM
So this project will go forward, a very nice HT mast followed me home today!
On a side by side comparison, the masts are very similar. I was surprised that the spin bail on the HT was much lower.
Did that ring any alarm bells?
Make sure you get cash pledges from all those who advised you to buy this mast before you go ahead and rig it.
If it breaks it breaks, I don't have a ton of money in the thing. It it doesn't break, it will be worthwhile. If it does break, o well I have a spare i20 stick anyways.
what was the cause of the original mast fail?
It blew over in a storm.
gotcha... sucks
Any suggestions on preventing this in the future? Its the second such incident I've heard of in the past month. Currently my boat is on the beach, rig up, with the dolphin striker tied to a screw-type stake (used for beach umbrellas). So far so good in winds up to 37 kts.
Sand or hard packed soil? For sand, bury 2 2x4s a few feet deep and run lines from the 2x4s to the shrouds or trapezes. If hard pack, get more of the screws to add multiple tie down points.
Go to the sides/ traps with 2 tie-downs ( stakes, boards trees, signs,etc.) and not your dolphin striker they can bend out. Don't ask me how I know. Plus you get less leverage to the middle, engineer boy. tshan is right about burying boards, I just use 2X 10s or 12s 2 or 3 feet long.
I will add that if using the screw-in type anchors with an eyelet, make sure the eyelet is at or below surface level. the boat may slide a little and the eyelet can damage/puncture your hull. You may also want to secure your wing mast from rotating freely.