UK-Cherub Forum
Cherub Chat => Calendar Events => Topic started by: Tim Noyce on October 09, 2008, 09:22:13 PM
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We have a sticky Weekend scheduled for the weekend of November 22nd and 23rd at Paul Crootes brilliant Cherub Bimbling paradise. The aim of the weekend is to let people do some boat building in a semi controlled atmosphere with the help of class 'experts'. Last year projects included a new boom, a spinnaker pole, daggerboard repairs, boom extensions to name but just a few.
This year, we have been given the opportunity to do some foils with the aid of Paul who has the skills to manufacture wooden cores for laminating. I, personally, am very keen to build a new solid core daggerboard for the 'Badgers Nadgers' as it has a bit of a history of eating expanded foam boards! If you would like to build a foil then please show your interest in this thread as it is essential that we get the dimensions for the foils in good time so that Paul can produce the blanks so we can then shape them and laminate them over the weekend.
If we could start a list of people that wish to build any foils, be it daggerboards, rudders, or t-foils please state what it is you wish to build and then we can go into more details of sizes and sections. If you plan to do any other projects then please also give us a show of hands just so we can put some sort of structure into the weekend to make best use of time, tools and most importantly, peoples expertise!
Cheers,
Tim
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We'll bring preshaped blanks and hope to lay up and bag two t foils and two rudders. One is for us and the other is for the SK4.
Its the one I have been talking about for months and some might even have seen at the nationals - the one that looks like a manta ray.
W
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Ooo! Sounds interesting. We would be really interested in doing some foil work. I was intending to use a foam core for our new foils but if all goes to plan I will have those complete by the sticky weekend. We might have a t foil and rudder blade to join together. Things never go to plan so this will be a good lesson before we do our own.
I think the weekend will be a good oportunity for us to build a pole or boom because there is a bit more space at paul's work shop. However if like last time we have preprepared the mandrel it shouldn't take to long to lay up the cloths. We might even get both layed up in one day.
I now own lots of carbon, and some bagging materials. I didn't buy a life-times supply however because wiz gave me a good price on the quantities that I needed.
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What other projects are people bringing? Who's comming? Just so I can start planning.
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I'm there! Paul, I have a CAD file of the board which I wish to build. It has a chord of 30cm and will be 180cm long. What other dimensions do you need to make the blank?
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180cm long.
Man that makes the one I put in Sgt Murphy look tiny at 165cm (and that is getting unmanageable). I have some pdf's of routign pattens for that board and the H105 if anyone wants them
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I plan to add the extra length in the un tapered top section so I can chop it down as required. Being a snip at 13 and a bit stone now, I might not need the extra length for power generation!!
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Hi Tim
Do you know what section your board will need to be and do you want me to sort out a Cedar blank (£30).
Paul
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Yes please Paul, That would be marvelous.
If Mr Slippy is reading this then he knows the section as he designed it. I am going to be making a board which looks like that jpeg file. I believe it has a chord length of 30cm and is a NACA 0010 section. Someone please correct me if I am wrong! ???
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PDFs of routing pattens files attached. Foil is on A4 sheets, CB on A3. Numbers indicate the thickness of the blank not depth into an unknown block!
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Is it possible to have the centreboard on one page (max page size of my plotter is 50 metres x .91metres). if not can you scale it onto A3 and I will scale it up, cheers
Paul
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Paul,
could you prepare a h105 blank for me? If born slippery could send me the routing profiles - how long is it? I'm thinking somewhere in the region of 2 meters would suit.....I haven't done any detailed calculations but have in mind something along the lines of the rs600 FF. I'd also like to build a boom off your mould but it sounds like that is engaged for the weekend. would there be a possibility of bringing it back to southampton for a spell? further to that I'd like to make some arrangements to build a mast sometime next year. I'm given to understand that the class has the necessary mouldings so making contact with that is another plan.
cheers
Matt
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RE: Mast Building
I believe Patrick has the mandrel at the moment and might have a mast stuck on it. Mango Jam (now in France ) and Strangely brown both have masts made off it. Roland has some interesting ideas about mandrels and construction methods.
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I think Dean and myself will be at the sticky weekend to reshape our t/foil.
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I'll be around in time for curry, will try and get down earlier but that depends on Debi's hockey comitments.
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Come down with me Stu, I'll be there good and early so you'll have enough time to build your new rudder ;D
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I will be there for centreboard fabrication purposes.
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Depending on the car and boat situation (hoping to pass in a couple of weeks!) I may decide I want to build a T-foil.
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Hi Ross, I know you will be reading this soon . If you want /need a lift to the sticky weekend Dean and I will gladly help out, also it seems there may be just a few cherubists up for a sail on the 16th, why not join the party ? I'm sure we can get you a ride/swim . Let us know on both counts, and lets hope the weather improves a bit.
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Likewise, if anyone in the vacinity of Derby would care for a lift down, then let me know. Think we all need to try and reduce our carbon footprints, to make up for the excessive carbon which will be used at the sticky weekend!! ;)
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I won't be there as I have much partying to do that weekend and I'm working on the Saturday.
If the wind forecast is good for next weekend then I'll come down to Whitstable (somehow) for a sail. I must fix my bike...
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Where is this sticky weekend exactly? I will hopefully be getting Flat Stanley this weekend so I think it will be a good chance to meet some of the class. Is anyone going to be going from the Southampton area?
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to the south of Weston Supermare.
Google Yeo Yalley Joinery and you should find some directions or paul's number.
I look forward to seing you. If you are willing to get sticky there will be plenty to do.
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Does anyone have any resin which i could trade / have / borrow / buy ?? I have plenty of carbon if anyone wants to do swapsies?! I only need enough to laminate my daggerboard our supplies are just low at work and I have no time to get any more before the weekend.
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Hi Tim
I ve got about 1.5 kg spare
Paul
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Hi everyone, location map attached. I will be there from 8.30 am
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Excellent, thanks Paul. I shall see you about 10 ish depending on how the drive is up from Devon! See you Saturday.
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Thanks Paul for another excellent sticky weekend! On this occasion blanks were cut and shaped for multiple daggerboards, rudders and t-foils from a variety of foams and woods. Stu also vac bagged his centreboard layup to leave him with the longest centreboard in cherub history at 1.9m! This will no doubt be cut down as it is rather ridiculous as it stands.... pics to follow. Phil and Sarah managed to laminate their Boom and Pole for their new build which both came out exceptionally light and stiff. The Locoists did some chopping and changing of their t-foil to try and increase their downwind speed as with their current arrangement they were hitting a 15 knot wall which needs to be broken!
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Yes: Snaps to Paul for hosting another corker:
1) Two blanks were shaped from cedar using Paul's excellent Template Technology (tm).
2) One of them was laminated and vac bagged into the Board of Doom. If you are a slipway, watch out!
3) Loco's T foil was cut and shut, and the join between the t foil and rudder was sharpend a la Cheese. They will now have better bow control to help with the Whistable chop.
4) A new T foil design was cadded and templates made for contruction.
5) A t foil blank was routed.
6) Two rudder blanks were routed using a tablesaw (finger count = exactly 10 per person afterwards)
7) Oh yes I almost forgot: A pole and a boom were made.
I think that is eveything, apart from the excellent curry.
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I intend to do an article for Y &Y.
Thanks Paul for letting us have a free reign in your workshop. The paint booth was ideal for laminating our pole and boom.
I would like to acknowledge the technique and knowledge transfer that occurs at these events.
Ideas used and proven this weekend include:
Vac bagging with DIY store plastic dust sheet and no tacky tape. brilliant Trim idea.
Double wrapping heat shrink onto carbon tubes and giving it a bit of heat between layers. Tim Unerman idea
using a sheet of polythene to transfer wetted out cloths to the mandrel. Great for handling long cloths with two people. Tim Unerman idea.
Creating templates for routing foils. Allows several foils to be routed quickly to the same shape. Paul Crootes idea.
Using bottle jacks to remove mandrels from booms and poles in control. Roland Trim idea.
Spreading resin with plastic spreaders (made from ice cream container lids instead of rolers and brushes. free and wastes less resin. Phil Kirk idea
Sarah and I need to get the final layer on our pole and boom and then post cure. by then it will be really really stiff.
I'm really glad that the locoists help didn't cock up the pole this year :-)
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Good shout sending a report to Y&Y. It's generated some posative interest in the forum!
Looks like a productive weekend. It's a shame I couldn't come along but I was working so it's not all bad.
Was it the traditional curry on the Saturday night?