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Old 04-08-2010, 01:36 PM   #11
Dave
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The 1398 is likely just a serial number and the "SC" number is a Signal Corps serial number. I'm not sure what the "4 wheeled gear" looks like but it's probably a Signal Corps stamp. Does it have "U.S.A." stamped within the boundaries?

Again, you need to measure the diameter of the bolt hole circle, the circle on which the center of all of the bolt holes sit. If it's 6 inches it's likely for a Hall Scott engine and more likely for a Standard J1. If it's 5 1/4 inches it's more likely an OX5, which was used on a large number of different aircraft, but certainly the JN4D was one of the common ones.
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Old 04-08-2010, 01:41 PM   #12
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Quote:
Originally Posted by tlooman View Post
Hi. I saw your posting and the Flottorp propeller listed on e-bay. I'm interested because Ole Flottorp was my grandfather (my mother's father). My mother is 90 years old and still living. Our family has quite a bit of historical information about Ole and his propellers. I'd be happy to try to provide answers to any questions you may have.
I had been in contact with another of Ole Flottorp's descendants years ago. I believe Steve Maghielse in Rockford, IL, was his name. He said that a number of Flottorp documents were lost in a fire, but he was interested in retrieving any that were left.

Does any of the information you have contain lists of drawing numbers and aircraft that used them? It would be very helpful to add that to our database.
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