Success Telescopic Mast now being tested now!
- Thread starter StargazerP303
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Very interesting design and hard work on your part Stargazer, but what about the cost? As far as solving the problem of waiting for the bridge to open, I would think keeping the boat on the other side of the bridges would be my preference but realize some people don't have that option.
A picture of my ex-wife will help with getting it back down.
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@StargazerP303
How is it superior to a Gunter rig with a sliding jaw?
That photo shows a less than 20 foot boat. Not a boat with a 40+ foot mast.!?!
I think you’re pulling our leg!
How is it superior to a Gunter rig with a sliding jaw?
That photo shows a less than 20 foot boat. Not a boat with a 40+ foot mast.!?!
I think you’re pulling our leg!
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There is a world of difference between a patentable idea and a workable prototype. I'll reserve judgement until the final engineering is completed a practical affordable prototype had been produced.
Good for you for innovating!!
Google now lets you easily do patent searches which turned up some older but interesting ideas
https://patents.google.com/patent/US6526901B2/en
https://patents.google.com/patent/US20050252432
Google now lets you easily do patent searches which turned up some older but interesting ideas
https://patents.google.com/patent/US6526901B2/en
https://patents.google.com/patent/US20050252432
This “invention” is somewhat analogous to when NASA spent a million dollars developing the space pen to write in zero gravity. The Russians used a pencil.
Many sailboats designed in Europe have built in mast lowering/raising systems that are quick, simple and bulletproof. A good example is the Polish built Tes, ( but there are many others as well)
One pull of a pin and the integrated A frame lowers the mast and jib into a crutch at the stern. Even my 2007 Hunter 25 has a mast raising system that only takes a few minutes to rig up.
I’m a fan of the KISS principle and haven’t used my space pen since the gas filled ink cartridge ran out.
Many sailboats designed in Europe have built in mast lowering/raising systems that are quick, simple and bulletproof. A good example is the Polish built Tes, ( but there are many others as well)
One pull of a pin and the integrated A frame lowers the mast and jib into a crutch at the stern. Even my 2007 Hunter 25 has a mast raising system that only takes a few minutes to rig up.
I’m a fan of the KISS principle and haven’t used my space pen since the gas filled ink cartridge ran out.
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I was thinking if the mast was part way down, and jammed. How about if you are coming in ahead of a storm, and the mast will not retract. The bridge that you need to go under does not raise, and there is no place to dock. You would not have chosen that location for safety if you weren't counting on being able to lower the mast.
How much did the old rig (spars and standing rigging) weigh compared to the new one you’re testing? And how tall is the fully extended mast? Do you have more pics of it sailing and trailering?
What’s the minimum height of the mast. I can think of a bridge in NH that kept me from getting into Great Bay.
I was thinking just two sections but with several you could drop the air draft to less than 15 feet. But each section has to be reduced in diameter to collapse so the upper section would be tight with halyards and communication lines.
I've got a couple of professional (rigging engineering) questions about your prototype test rig, Capt Rob, that won't require you to reveal any patent-able or proprietary information.
Have you calculated the transverse and longitudinal moments of inertia for the mast section(s) you are testing? Did you calculate the the RM 30 (or RM20 or stability curve) as well for the boat you are testing?
What material are you using for the extrusion: Aluminum or carbon? How long is the extrusion and how many spreaders are needed for the tested rig. What does it weigh?
Can you share any of that? It won't endanger your intellectual property to share that info.
Judy
Have you calculated the transverse and longitudinal moments of inertia for the mast section(s) you are testing? Did you calculate the the RM 30 (or RM20 or stability curve) as well for the boat you are testing?
What material are you using for the extrusion: Aluminum or carbon? How long is the extrusion and how many spreaders are needed for the tested rig. What does it weigh?
Can you share any of that? It won't endanger your intellectual property to share that info.
Judy
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So, what's the point of sharing any of this? When the patent is granted and you are ready start a business to produce these expensive masts for an extremely limited market, come talk to us or look for funding from Indiegogo, Seedinvest, or the other crowd funding sources. Until you are ready to make this public put your ideas to a real test, you are just blowing smoke and selling snake oil.
There are many more inconsistencies than that. Besides, the photo is a fake.
That would be the polite term for it.
Well that was my thought. A low resolution photo of a distant boat with loose "shrouds" that had sharp corners. Looks photoshopped to me.
Looking forward, we are all going to need lessons on how to detect altered photos and documents.
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