23-11-2024, 12:56 PM
Jon Edgar and I did some work on this a while ago.
On reading my notes, I cannot immediately see what conclusions we came to.
This never got finished, because I didn't/don't have a low frame crankcase to play with.
I think the conclusions were: the high frame rubber mounted feet were higher up the side of the 'case, (compared to the solid mounted 'case) to allow for the insertion of the rubber mounts.
They were also further back, to move the engine forward to accommodate the 4 speed box. (Were there solid mounted 4 speed versions, or did the change happen together?)
I must have had a later 'case at some point, because I think I decided that the rear mounts of the later (low frame) engines were raised by a bit (5/16? 3/8?)
to drop the rear of the engine.
I turned up a couple of ally spacers, replicating the recess under the foot, in case I ever had to use a later case in an earlier chassis.
If I can find them, I will measure their thickness.
On reading my notes, I cannot immediately see what conclusions we came to.
This never got finished, because I didn't/don't have a low frame crankcase to play with.
I think the conclusions were: the high frame rubber mounted feet were higher up the side of the 'case, (compared to the solid mounted 'case) to allow for the insertion of the rubber mounts.
They were also further back, to move the engine forward to accommodate the 4 speed box. (Were there solid mounted 4 speed versions, or did the change happen together?)
I must have had a later 'case at some point, because I think I decided that the rear mounts of the later (low frame) engines were raised by a bit (5/16? 3/8?)
to drop the rear of the engine.
I turned up a couple of ally spacers, replicating the recess under the foot, in case I ever had to use a later case in an earlier chassis.
If I can find them, I will measure their thickness.