Well found something interesting today when I pulled off the old MC - it has a 1' bore, but this new one that I can't recall where it came from - may have come with the vehicle, I have a tonne of spares for it - has a 7/8" bore - apart from that they are identical. Pick is a bit misleading - they are both the same length - to the mm.
https://farm8.staticflickr.com/7810/...16d8f79b_h.jpgIMG_0532 by
Gavin Gregory, on Flickr
Will go with the 7/8' one I think - because it's new and I think it will work with the discs - should also give me a bit more assistance and I've never been short on pedal travel. Pedal ratio is 4.9 to 1, but had a close look and I could indeed change this without too many dramas to give myself a little bit more, but will leave this unless I think the end result isn't quite what I'm after. With the dual diaphragm booster I've never had any issues with how it stops - I could lock up the 36" tyres if needed, so thinking I'm not going to have any issues, just the benefits of having brakes that will always pull up straight and not require as much maintenance. To be honest, the drums have been great since I rebuilt them a couple of years back but I'm still happy to be leaving them behind. Have all the dimensions from everything now, so will sit down and run some calculations - which the Engineer wants to see anyway.
