questionnaire for a-level D.T
Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=2432
Printed Date: 17 Aug 25 at 7:55pm
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com
Topic: questionnaire for a-level D.T
Posted By: elliot
Subject: questionnaire for a-level D.T
Date Posted: 15 Nov 06 at 3:45pm
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please could you fill this in as i need to take a survey of consumer opinion before i start designing my product. please post qu number and answer. ONLY FILL IN IF YOU OWN AND USE A RACING COMPASS!!! cheers
1 What type of dinghy do you own? One or two man?
2 How many years have you been sailing? 1-5 5-10 10+ 3 How often do you sail? More than once a week Weekly Monthly Less frequently 4 Where is your racing compass located on your boat? Mast foot Space frame Other (please state) 5 Are you able to read your compass at all times while sailing? Yes Most of the time No 6 If a compass mounting bracket became available that could be attached to the boom and would rotate to allow you to see it all the time whilst sailing and when on different tacks, would you be interested in buying it? Yes Maybe No 7 Does it need to be detachable? Yes No 8 How much would you be prepared to pay for this? Up to £10 Up to £30 £50 or more 9 Would a drinks holder be of use on your boat? Yes No |
Replies:
Posted By: elliot
Date Posted: 15 Nov 06 at 3:58pm
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bump ------------- ta, |
Posted By: Guest
Date Posted: 15 Nov 06 at 4:23pm
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I fear you have a fundimental problem - if the compass is rotating it won't give you the heading of the boat in an accurate fashion ... Rick ------------- |
Posted By: mike ellis
Date Posted: 15 Nov 06 at 4:34pm
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good luck with your work, again an example of someone who got a more interesting project than me (gooddam puppet show muttermutter ahh i see A level, that might explain it. ------------- 600 732, will call it Sticks and Stones when i get round to it. Also International 14, 1318 |
). i dont have a compass so i cant fill in your survey though.
Posted By: lozza
Date Posted: 15 Nov 06 at 5:05pm
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eliot, just pm'd you my response. ------------- Life's a reach, then you gybe |
Posted By: Adds
Date Posted: 15 Nov 06 at 5:07pm
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I agree with Rick if the boom is going in and out how is it going to get the correct bearing, unless you spend £399 on a tacktick mast rotation sensor. ------------- Cheers Dudes |
Posted By: JimC
Date Posted: 15 Nov 06 at 5:30pm
No doubt that's the design element of his project, but one obvious way of doing it is to have a mechanical linkage so that the compass housing turns on the boom exactly in synch with the boom turning on the gooseneck. That would only work for non-rotating masts though: with a rotating mast the linkage would have to be relative to the deck so it would be more complicated to rig but still possible. |
Posted By: Guest
Date Posted: 15 Nov 06 at 5:33pm
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It would have to be a pretty tight bit of engineering not to suffer from slop as the boom moves quite a bit. How about using an electronic compass and seperating the display from the sensor - I think Nigel Buckley did this on his 470 in th 80's ... ------------- |
Posted By: Kiteboy
Date Posted: 15 Nov 06 at 6:58pm
wow you guys have really boring tech projects! im only doing GCSE and im making a carbon fibre kiteboard  if i used a compass id fill one in but i dont. youll get to the stage where you just make up results! everyone does------------- Laser Radial 185598 (transitional squad...oh yeah) 3 and 7 and 14m kitesurfing kites |
Posted By: mike ellis
Date Posted: 15 Nov 06 at 7:04pm
i didnt ------------- 600 732, will call it Sticks and Stones when i get round to it. Also International 14, 1318 |
Posted By: craig-m
Date Posted: 15 Nov 06 at 8:01pm
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I'm doing GRAPHIC PRODUCTS at GCSE, and i had to do exactly that. I couldn't get to the sailing club to ask sailors, and nobody else knew what the product was! Still...teacher didn't know the dfference! ------------- RS300 406 http://www.dysailing.com - DERBYSHIRE YOUTH SAILING http://www.burtonsailingclub.co.uk - Burton Sailing CLub Sailing: The only sport that's called off for nice weather |
Posted By: Scooby_simon
Date Posted: 15 Nov 06 at 8:06pm
Yep,. that might work - The problem would be even worse on Cats as the mast also rotates. ------------- Wanna learn to Ski - PM me.. |
Posted By: olly_love
Date Posted: 16 Nov 06 at 11:28am
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i made all of mine up. the project turned out fine and the spadle will be out soon on the market so keep an eye out for it. oh and haveing the compas mounted to the boom with a gearing it wouldnt work well cause the boom is always moving cause of sheeting. prehaps if u made a compas that has more than one dial on it but that would have sheilding probs anyway keep going and just steel ideas ------------- TWO FRANK-Hunter Impala |
Posted By: BigFatStan
Date Posted: 17 Nov 06 at 10:40am
| Put the sensor somewhere fixed (anywhere in the boat basically) connect to the display by wire or wireless. Not difficult |
Posted By: BigFatStan
Date Posted: 17 Nov 06 at 10:42am
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But I still think it addresses a problem that doesn't exist - how many people have problems seeing their tacktick? |
Posted By: BigFatStan
Date Posted: 17 Nov 06 at 10:50am
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But I still think it addresses a problem that doesn't exist - how many people have problems seeing their tacktick? |
Posted By: English Dave
Date Posted: 17 Nov 06 at 11:21am
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It would still be easier to read on the boom! How about a GPS compass? That would measure your true heading rather than the direction the boat is pointing in and would ignore the angle of the boom. You'd have to be moving though. ------------- English Dave http://www.ballyholme.com - Ballyholme Yacht Club (You'd think I'd be better at it by now) Hurricane 5.9 SX RS700 |
Posted By: BigFatStan
Date Posted: 17 Nov 06 at 1:39pm
| I'm not convinced it would be better on the boom - I don't spend much time looking at that when I am going upwind (which is presumably when the compass is most used) but I do spend most of the time looking past the mast. |
Posted By: 49erGBR735HSC
Date Posted: 17 Nov 06 at 1:55pm
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For the cats with rotating masts, wouldn't the ideal be to make a bracket which comes back from the mast step, a bit like the one on the 49ers and have the compass mounted solidly to the bracket which is mounted independantly to the mast. Have a look at http://www.ruleone.co.uk/compass_shop.html - http://www.ruleone.co.uk/compass_shop.html for details on the 49er mount and it may be just a case of modifying the design for a cat application (if there is a case for any modification or else it may be back to the drawing board for other ideas). ------------- Dennis Watson 49er GBR735 http://www.helensburghsailingclub.co.uk/ - Helensburgh S.C http://www.noblemarine.co.uk/home.php3?affid=560 - Boat Insurance from Noble Marine |
Posted By: Adds
Date Posted: 17 Nov 06 at 2:01pm
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Stan makes a good point it is very easy to see the tacktick, if anything you want it further forwards not back. It is not quick to have your eyes in the boat, ie looking at the boom. ------------- Cheers Dudes |
Posted By: elliot
Date Posted: 17 Nov 06 at 2:44pm
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cheers guys.keep fillin in the questionnaire and keep those pm's coming!!! ------------- ta, |
Posted By: lozza
Date Posted: 17 Nov 06 at 3:44pm
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What we need is a head up display! Didn't BMW oracle use these at the Americas cup last time out? ------------- Life's a reach, then you gybe |
