UK-Cherub Forum

Cherub Chat => Tech Chat => Topic started by: Banshee Ambulance on May 20, 2012, 10:11:01 PM

Title: HD Foam
Post by: Banshee Ambulance on May 20, 2012, 10:11:01 PM

Anyone know of a foam supplier who will be happy to sell partial sheets? I only need enough for a rudder blade. Preferably in the Bristol area.

Title: Re: HD Foam
Post by: john_hamilton on May 20, 2012, 11:07:31 PM

John Hamilton Ltd.

I have lots PM me

Title: Re: HD Foam
Post by: phil_kirk on May 21, 2012, 01:29:38 PM

With respect John the lareg sheet of brown foam that you bought for the build of your boat was not HD.  It appeared close to 80kg /m^3.

You may have bought more since.

I put a post a year ago on the forum to say that impag of dursley had been bought up by an other foam supplier. I can't recall the name at this point.

Title: Re: HD Foam
Post by: BenR on May 21, 2012, 01:54:43 PM

http://www.tridentfoams.co.uk/core-materials.html

Think these guys are the sole distributor of the 3M foams.

Title: Re: HD Foam
Post by: Neil C. on May 21, 2012, 02:01:59 PM

I bought some Airex from them last year. Good customer service, quick delivery. Seemed a reasonable price.

Title: Re: HD Foam
Post by: john_hamilton on May 21, 2012, 03:05:13 PM

ive bought some substantially higher density foam Mr Kirk!!!! after our experience i thought different stuff was needed for the centreboard (which is still in one piece, despite groundings, and two people bouncing it :)

Title: Re: HD Foam
Post by: phil_kirk on May 23, 2012, 10:33:20 PM

Sorry John.  I just wanted to make sure that as a class we only make a mistake once by sharing best practice with members.

I'm glad your current Centre board is working well. 

Title: Re: HD Foam
Post by: john_hamilton on May 23, 2012, 11:05:27 PM

Dont worry pal!!!! I know what you meant, hope all is well with you and sarah

Title: Re: HD Foam
Post by: roland_trim on May 24, 2012, 10:26:52 AM

The last few rudders made by us (and I think Will for Aunti) used the pink and green foam. This would be 120-80 and certainly not as dense as the 180-200HD foam we also have (a darker green).

All of our "high aspect" lifting horizontal bit of foils have been made from 8mm sheets of "standard boat making 80 Airex".

For CB's the pinch by the case is the significant factor. For this either special measures (extra laminate/stringers) or high density foam appears to be needed to avoid it pinching and then buckling in at the exit to the case.