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Mast on trailer - which way round?

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allanorton View Drop Down
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    Posted: 04 Dec 06 at 6:52pm
Originally posted by ColH

Ah, but the screws/bolts would at least be having a force applied perpendicular to the thread, so that ought to be better for them than the force applied by dragging a rudder blade thru the water

bolts should be used in tension, not shear.

rivets should be used in shear, not tension

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Post Options Post Options   Quote ColH Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 6:45pm

Originally posted by Calum_Reid

see i think the point is not so much the weight on the transom but the fact the weight is onto rudder pintales that are not designed to take loads in that direction!

Ah, but the screws/bolts would at least be having a force applied perpendicular to the thread, so that ought to be better for them than the force applied by dragging a rudder blade thru the water at [*] knots.....??

* = Insert your speed freaks figure here

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Post Options Post Options   Quote m_liddell Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 12:43pm
Slightly off topic but still amusing. When I picked up my 14 I realised the mast extends almost the entire length of the boat and my car (punto). They guy told me to be careful on angled drives at sailing clubs since the mast can squash the car! I wonder if he ever did this...
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Post Options Post Options   Quote Iain C Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 11:49am

Off topic but I have the white RS800 spinnaker that was supposed to be in that feature (it's the one in my avatar)

The plan was that originally the Herald was due to have a longer mast capable of flying a masthead kite, the thinking being that Jezza and Hamster were to chug up the lake, and at the last moment Captain Slow was to pop the kite on the Herald and whizz past them.  Apparently the BBC had spoken to the RYA who had put them in touch with the RS association and then on to Steve Irish (whose kite it was before I bought it off him).

However when they looked at it they realised that it probably would not make it go any quicker and there was too much to go wrong, also there would be more laughs from having a short Mirror rig that could actually drive around without hitting anything rather than putting the mast up by the lake so they dropped the spinnaker idea.

Anyway, that's the story...so the kite had a lucky escape from TV embarrasement in front of millions of viewers and went on to win a Nationals instead!

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Post Options Post Options   Quote jpbuzz591 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 11:40am
sort of james may style in the top gear amphibious vehicle challenge
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Post Options Post Options   Quote MRJP BUZZ 585 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 10:44am

Originally posted by Iain C

I just leave mine up and put "avoid low bridges" into the satnav...

That sorted that

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Post Options Post Options   Quote Iain C Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 9:55am
I just leave mine up and put "avoid low bridges" into the satnav...
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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 9:37am

Originally posted by JimC

Originally posted by Guest#260

Because the back of the boat is unsupported and flexing as the trailer goes over  bumps so better not to put more weight on the transom.

I have to admit I find it very hard to believe that the loads coming from the extra 3 or 5 kg of mast weight on the transom with the boat that weigh round can be within even an order of magnitude of 70kg of helmsman's backside bouncing off waves...

I don't sit in my boat on the trailer; the only time the helms weight is in the boat the hull is supported by water ...

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Post Options Post Options   Quote timnoyce Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 06 at 8:44am
I think we are going round in circles now... I think the question that needs to be asked is "Have you ever damaged your boat or mast when towing that could have been avoided had the mast been round the other way?" ... I have a feeling the answer will be NO!
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Post Options Post Options   Quote Calum_Reid Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 06 at 11:39pm
see i think the point is not so much the weight on the transom but the fact the weight is onto rudder pintales that are not designed to take loads in that direction!
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