A little more on the filter.
Spent quite a bit of time yesterday and today stripping intake plumbing and trial fitting the ITG. I can now remove the bearclaw and tank blindfold its been off and on so many times.
The prototype fouls the bc in a couple of places which has necessitated a small redesign. When I first looked at it I judged there was enough space under the edge of the BC to clear the filter - not so. Anyway no great shakes, have checked with ITG and they are good to go with the new shape. Filter is still the same length, width and height but has a couple of scallops to clear the bc. Luckily I had two baseplate's lasered and can modify the second one to the new shape. It nicely clears the coolant overflow tank and everything else it needs to. Removing and refitting is an absolute breeze, its off/on in about five minutes with no need to remove the tank.
I have spent a lot of time with ITG on this, great to work with and the guy who makes the bespoke stuff is an artist. All of the technical choices were make with their advise.
Foam is nominal 18mm thick and fire retardant. The prototype had a fire trap gauze as used in F1 filters, this does increase the cost by £48 - my preference is to have it but they will do them without. They've given a rough cost at about £145 including vat but not shipping. (flame trapped £193). Its possible a bulk order would get this down a little.
How its going to go from here is that this week end I am going to make a dummy filter from polystyrene and check the clearances under the bc. If all is ok, ITG will make up the second prototype. Once its back and on the bike I will take some more snaps and post them.