4-1200?

[Avidfox]

Hi, All
I am looking for info on the difference between a std mod IV and a mod IV-1200. The mod IV that I picked up last fall has a data plate that says that its empty wt is 606 and its gross wt is 1200lbs. it was finished and signed off by the FAA in 1994. S/N 1621 N8072Q. Is there a quick way that I can tell? I have been in contact with a couple of prospective buyers that told me that it is not a 1200.
Thanks

[Av8r3400]

Easiest way to tell (IMO) is what type of hinges it has on the rudder.

The 1050 has standard hinges and the 1200 used the "rod end bearing" style hinges.

[jdmcbean]

Serial number tells all.
1621 is indeed a model IV 1050 not a 1200.

[cap01]

that is correct , the rudder hinges are probably the easiest way to tell . my model IV 1050 sn 1563 was delivered as a kit in 1991 and has the short vertical, small rudder and 4 pin hinges . although in my builders log there is extensive description of mods that were made to increase the gross weight to 1200 . I have never found any info as to where these mods came from or who endorsed them . from a conversation with Debra it appears the cross fuselage structure where the bungees attach are not as strong on the III/IV 1050 as on the IV 1200. the debatable point is if the grove gear will provide the same strength as the structure of the IV 1200 . I have somewhere seen where these mods were ment for aircraft that were to be used on floats and mine was clearly intended to be put on floats as I have that skag thing that float planes use .