Well, I did the first seat yesterday and it went pretty well.
I referred to some of the pictures in Roger Williams book and took quite a few myself as the seat came apart. Took my time and got it done in about 5-6 hrs.
The frame was in remarkably good condition and didn't need any work apart from a wipe clean. The couple of the back rubber webbing straps
had sagged a bit especially the horizontal one so I shortened it about half and inch and its much better.
The new foams didn't seem to be quite the same shape as the old ones but then they haven't had over 30 years to "set". A bit of glue and persistence got them to fit nicely. I also used a piece of an old side bit to go in as extra lumbar support, old age has its problems you know.
The replacement rubber diaphrams are not TR7 as they are no longer available but I think they are from a TR6? Anyway, they do a pretty good job and are good support when tensioned. The mountings are different on the long sides so I had to drill some new holes in those little "flanges" on the frame. They came with a few slightly longer hooks which makes it all work nicely. Big contrast to the saggy old one.
Getting the cover back on was less of a drama that I expected, not sure why but it went OK. Thing is to do the base cover first as some of its fixing are hidden by the back cover - ask me how I know that !!
Final result is a nice firm supportive seat. Just need to get time to do the second one.
Thanks again for all the tips.
Russ
1980 TR7 Sprint DHC
Dursley
UK
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