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Anyone With Some Input

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    Posted: 15 Dec 05 at 12:36pm
Anyone else noticed the one with the pink luff is stuck on the mark (cone) ...
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Post Options Post Options   Quote Mark Jardine Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 05 at 12:55pm

Originally posted by Guest#260

Anyone else noticed the one with the pink luff is stuck on the mark (cone) ...

I was hoping someone would notice that! It was actually Ben Vines (GBR-999) who misjudged his run-up to the start line (between the two cones). One of the hardest thing when racing is judging perspective when going at speed since you are looking at the racing from off the course. The best thing (for consistency) is to allow lots of room for roundings and when avoiding another landyacht. 

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Post Options Post Options   Quote Matt Jackson Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 05 at 1:00pm
Looks like the nearest yellow one is gonna get yelled at for barging as well (I'm assuming the yellow cone is the pin end).
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Post Options Post Options   Quote m_liddell Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 05 at 5:30pm

I've been thinking about making one too even after seeing a pic of one in the photo thread on here. I have some spare radio gear with tiny servos so I guess it would be pretty cheap.

I'd love to see any plans that are around before I go and re-invent the wheel designing/making one...

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Post Options Post Options   Quote Chris Noble Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 05 at 10:21pm

mine cost a lot less than that, and the following refinments are being made as we speak, new mainsail made from mylar (with graphics!!! ) the wheels are actually inline skate wheels ias i felt given the proposed speeds that plastic on metal bearings would melt, so bearings were needed, however on a wet surface these do not grip enough so new wheels that are also bigger are being sourced. The steering is impecable, i was always concerned that it would need tweaking but it surprisingly doesnt! The aft axel is two concentric aluminium extrusions bonded and is super light but with less flex than a carbon axel which is why i chose it not only as its cheaper but also has some weight which is a big must in that area. With regards to the wishbone idea, i ruled that out as the rig is stayed and actually has a goosneck. The goosneck arrangement is also the kicker, its the same system used on the top end rc yachts if i change the mast then i may go for a gnav, but at present the kicker is bonded to the mast, the mast is also an alloy tube which has the bend characteristics believe it or not. The rig can have differnet tensions put on it for different winds (yes a bit of thought was put in after all) but heres the good bit, the rig tension is adjusted by just ONE screw K.I.S.S. (keep it simple stupid!) im going to take it to the strathclyde loch xmas regatta this weekend for sum post race fun and input.im happy with the mast position as it is and the hull length is fine. Im considering carbon spars but the sail refinements are what is limiting the speeds at the moment i beleive, another thought was to add a jib aswell, very high aspect, just to take a few more degrees upwind. So far it has been good fun just designing the rig and what not and playing around with it.

 

Here is myt big question, would anyone be interested in creating an unoficial development class for this, just for like post race day laughs, aswell as some actual rc events, but just to see who could come up with what, similar rules to the dinghy dev. classes, any interest?

 

more input greatly appreciated

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Post Options Post Options   Quote Isis Quote  Post ReplyReply Direct Link To This Post Posted: 16 Dec 05 at 12:57pm
As I said in my post on the other page Id be very interested in the 1DL... The only thing which puts me off slightly is the fact that the one design aspect puts the cost up and all my spare cash is heading towards the cherub at the moment.

A Dev class on the other hand... now thats more my kinda thing
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Post Options Post Options   Quote Chris Noble Quote  Post ReplyReply Direct Link To This Post Posted: 18 Dec 05 at 6:48am
new main sail built, ill try and get some photos up as soon as i can, im still looking for bigger wheels. Going to hopefully get some testing done on the sail after the regatta today but if not then its the last week of term so i shant be missed too much.
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Post Options Post Options   Quote Jack Sparrow Quote  Post ReplyReply Direct Link To This Post Posted: 18 Dec 05 at 7:11pm
Do you guys race under 'Land Yachting' rules or 'Sailing'? The
landyachting I have done has a few different rules like no overtaking in
the conened turning zones e.t.c
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Post Options Post Options   Quote Chris Noble Quote  Post ReplyReply Direct Link To This Post Posted: 21 Dec 05 at 9:46am

For those of you interested, ive worked out to have cost around £100 so far to build the yacht including RC kit (and that does include a high torque servo!) The special servo is by ratio the most expensive part (£15) but you can get a pack that comes with the remote, the receiver and 2 normal servos (use 1 for the steering and the other is a spare) for £40 its 27Hz i think, it works perfectly well, although for racing them it may be worth installing the slightly more expensive 40Hz kit as you have more channels available sosignals dont get crossed!  (could be amusing tho) The original sail was made from two skins of (believe it or not) transparent duck tape, stuck adhesive on adhesive side. Which seemed to work well as the battens could be put in the laminate, but ive now sourced a far superior material which i will test as soon as there is some damn wind! The sail shape is acheived with a home made sail block which allows you to get the draft of the sail aswell as the leech curve correct when made using panels, you wont get the same power from a one peice cut! its worth the extra effort. Im going to change the kicker to a gnav today and lower the centre of effort. I am still trying to source better wheels however, can anyone help??? Still playing with the idea of a high aspect jib, but better to get the main right first!!!

More photos coming soon (better quality this time!)

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I14 2 Masts 2 poles 3 Booms, Foils Kites/Mains/Jibs too many to list.
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Post Options Post Options   Quote mike ellis Quote  Post ReplyReply Direct Link To This Post Posted: 30 Dec 05 at 4:00pm
i have a thought regarding your lack of wheels. have you considered using wheels from a construction kit such as k nex. it is just a thought and i dont know if they'd fit your specification but they would certainly be cheap however if you realy can get it to 30km/h then k nex, being plastic, would probably melt. another thing you could try if it gets realy desperate, dismantle a block and use the bit you put the rope round as a wheel. or perhaps you could shave back a ball bearing  block so a to leave a bit of the bit the rope goes round sticking out. the ball bearings would certainly reduce friction. when you do finish the yacht i would love a set of plans and would certainly be interested in making it into a development class.
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