Hi Bill,Morning Mac, Any chance you could give me how long the straight tubes are on your "D" seat frame, I mised buying one on Ebay the other day, So will have to make one myself, I have a seat, So that will give me how wide it is, Many thanks, Bill.
All measurements to centre lines so you will need to allow for fittings at ufm and RFM pivot. The tube from the RFM pivot is all one piece from RFM to RFM . The horizontal tube from the ufm centre line of bolt to centre line of RFM tube is 21 1/2" where it is welded. The length of the straight from the RFM pivot to centre line of the horizontal tube is 25 ins. The horizontal tube is welded to the inside of the curve where the RFM tube bends to the vertical to form the seat hoop.
The distance at the rear between the seat support tube is 12" and 6 1/2" a the front .
Regards Mac