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Seat foam

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Underdog1:
I need to source some foam for a metal seat pan, been recommended I use closed cell foam to avoid t going mouldy but beyond that I’ve no ideas

I’ve heard of people using yoga mats but that seams a bit too cheapskate and can’t inagine it would be much good. Does anyone know where I can get some proper stuff from?

haynes66:
P&K classic bikes 01543 274176.  not cheap but one of the best. dont know if they will sell you just the foam though..

Laverda Dave:
Google coach trimming suppliers near to you, they should have what you need. You'll need at least medium density foam or if making a custom seat a thin layer of hard density foam with an top layer of medium foam. You could always use medium foam with a gel pad on top (and under the seat cover) if you are getting a seat custom made.
All foam is light sensitive and eventually turns to dust (or goes rock hard if made from Dunlopillo). Trick is to avoid getting direct sunlight onto the foam. Closed cell is normally molded foam to a specific shape and has an outer skin such as OE seat foam. You can get other types of closed cell foam, the coach trimming suppliers can guide you.
If none of the above suit, buy a 400/4 seat and discover what real pain feels like after 100 miles  :-\!

Trigger:
Laverda explained this very well, you need the combination of firm and comfortable. You will also need to drill breather holes in the seat pan. P&K get there seat form from Bob, not very comfortable foam  ;)   

Underdog1:

--- Quote from: Trigger on December 31, 2017, 07:19:11 AM ---Laverda explained this very well, you need the combination of firm and comfortable. You will also need to drill breather holes in the seat pan. P&K get there seat form from Bob, not very comfortable foam  ;)

--- End quote ---

Are the breather holes to let air out when he foam is compressed? How many we talking and what diameter?

I plan on riveting the covering straight to the pan, presumably these will be far too airtight to suffice?

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