[sparkydog]

I didn't think that 3D software would have much of a role in my project, but over the weekend I stalled out on a lot of the body mods (broken angle grinder) so I turned my attention back to the wiper linkages and quickly realized I could spend a lot of time screwing up real metal. So I decided to measure up everything and then create a 3D model.

Boy did that pay off! I could have spent the next 3 years playing with the linkages and never would have realized what were the key elements to getting it to work right. Now I feel I have a clear understanding of what I have to do to get this to work.

I have to mimic/adapt the IH style motor cam with the twin arms spaced 150* apart and at the same size as the IH cam was. But I will be using the GM linkage knuckles and will have to have two post heights on the cam so the linkages can sweep past one another. On the wiper post ends, I have to have the same arm length as the IH - or maybe just a little longer if I want to change the amount of sweep over the windshield (the stock IH wipers tend to go a little too far out over the curved ends of the windshield). So I think I will build some adjustment ability into the wiper post arm length and also some ability to adjust the linkages lengths. An eighth of an inch makes a huge difference on these things.