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Author Topic: I think that I can fly.  (Read 20327 times)

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Offline HighwaytoHelm

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Re: I think that I can fly.
« Reply #45 on: June 08, 2015, 11:33:27 AM »
It looks awesome Clive. You say you're slow in the corners, but how slow were moths when they first went foiling? I imagine it's just a question of maturing the design and developing the right techniques.
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Offline Clive Everest

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Re: I think that I can fly.
« Reply #46 on: June 29, 2015, 01:19:18 PM »
A bit more flying at the weekend with a new top speed of 18.4kts.
Alex has posted a bit more with a few failed gybe attempts.
https://www.youtube.com/watch?v=o0yrJBhxOfU

Clive
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Offline BenR

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Re: I think that I can fly.
« Reply #47 on: June 30, 2015, 01:20:06 PM »
Very nice! great to see some good development testing going on.
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Offline Clive Everest

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Re: I think that I can fly.
« Reply #48 on: July 21, 2015, 09:08:10 AM »
We tried putting the camera on the bowsprit at the weekend for a different view.
https://www.youtube.com/watch?v=_l7PtVJQRJg
Had hoped to break 20kts but maxed out at 18.6
Clive

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Offline Phil Alderson

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Re: I think that I can fly.
« Reply #49 on: July 23, 2015, 09:47:12 PM »
Looking really good Clive. It looked like you were still up on foils for most of the drop, how are you finding manuvers?
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Offline Clive Everest

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Re: I think that I can fly.
« Reply #50 on: July 27, 2015, 11:09:59 AM »
Hi Phil,
It is too early to really know if manoeuvres are going to be expensive.
We have only just got to the stage where straight lines are working.
A week ago we did our first club race, we seemed to be a lot faster than the 700s and B14 but did not finish far in front of them.
Tacking is slow, mostly because I am very cautious going into the tacks. It is wobbly as it comes off the foils. As I move back to give Alex room (he seems to need more every month) the rudder foil can stall first leaving the bow high in the air. Once round it comes back onto the foils smoothly.
We managed a foiling gybe for the first time which will help a lot.
We had a couple of laps where we lost loads at the leeward mark by misjudging lay lines and coming in, off the foils, very slowly.
Will we see you at Mumbles?

Clive
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Offline Phil Alderson

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Re: I think that I can fly.
« Reply #51 on: August 04, 2015, 12:58:39 PM »
Hi Clive,
It certainly sounds like some interesting development you are doing there, I would really like to see it but unfortunatly won't be coming to Mumbles. Getting us, a boat a 2 yearold and grandparent babysitters to the other end of the country is just a bit too much.

Phil
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Offline Clive Everest

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Re: I think that I can fly.
« Reply #52 on: September 02, 2016, 05:28:00 PM »
For those that did not see too much of us at the nationals:
https://www.youtube.com/watch?v=toRQnW1KZ4g
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Offline Neil C.

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Re: I think that I can fly.
« Reply #53 on: September 02, 2016, 06:30:21 PM »
Crikey. That looks like a bit of a game changer.
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Offline Phil Alderson

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Re: I think that I can fly.
« Reply #54 on: September 04, 2016, 09:04:13 PM »
Wow, that is really impresive you and Alex are making the boat look really stable and sorted. Have you moved the mast fwd?
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Offline Clive Everest

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Re: I think that I can fly.
« Reply #55 on: September 04, 2016, 09:49:43 PM »
Mast step has gone forward 450mm.
Gave a lot more room in the cockpit until Alex grew.
Nick has the old sails and the centerboard.
New main is 1m bigger and jib smaller.
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Offline Neil C.

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Re: I think that I can fly.
« Reply #56 on: September 05, 2016, 11:01:31 PM »
The fact you have engineered the whole boat from scratch is highly impressive. Did you design and make the actual foils yourself Clive? Do you think this level of foil construction would be feasible for a reasonably skilled Cherub home builder?
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Offline Clive Everest

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Re: I think that I can fly.
« Reply #57 on: September 06, 2016, 02:23:35 PM »
The rudder is the original Demon T foil with the shaft extended thanks to a bit of a broken rudder from Roland.
I made the centreboards. Rog Angell made the main lifter.
None of them were hard to make.
One of the many advantages of this system is there are no structural T joins and no moving flaps.
It is much easier to build than the moth system.
The main foil assembly is effectively 3 planks.
You could shape bits of wood and over laminate.
The laminates are quite thick at about 2mm so you do get better accuracy using a female mould. The moulds I used were CNC cut in MDF. The layup was all wet. Using MDF with prepreg is risky as the mdf has a habit of changing shape as it dries out.
I plan to try taking plaster moulds off 3d printed blanks.
The blanks could be hot wire cut foam. This is accurate enough for competition RC gliders and very cheap.

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Offline andy_peters

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Re: I think that I can fly.
« Reply #58 on: September 07, 2016, 04:26:54 PM »
Clive (all),

Is the development now at the stage where we could publicise it - and see if foiling will do for the Cherub what it did for the moth?  We could summarise the above into a short article to accompany the video and send to Sailing Anarchy/ Y&Y (perhaps they would do a fuller article in print?)  with a link to this thread if people want to get involved.  We also need to think how to make it easier for people to get into foiling Cherubs (and Cherubs in general) building on your 'flat pack' approach.   We started in Cherubs due to the publicity around the 05 rules and the female Olympic trials, perhaps foiling could be the next catalyst

If we are going to go foiling I believe we need to have a momentum and critical mass to the foiling fleet.  Having just one or two boats foiling and cleaning up at events will fairly quickly end up with a fleet of one or two boats at the events which I'm sure nobody wants.

Thoughts?
« Last Edit: September 07, 2016, 04:28:42 PM by andy_peters »
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