View Full Version : Pylon Diameter for 2005 PS 197 ????

01-07-2012, 06:24 PM
Hi there,

I should know this but I don't. What is the pylon diameter for a 2005 Prostar 197? Is it 3" or 2 3/8". I am pretty sure it is the 3" but I need to be sure.

I am betting one of my fellow TT Members knows this one.


01-07-2012, 06:32 PM
Are you referring to the upper or lower measurement as it is a tapered pylon? I measured mine a year or two back, but don't recall the exact number right now. And, I don't have the boat nearby or I would go measure for you. If you are thinking about the top, 2 3/8" sounds closer to right than 3" does, for what it is worth.

01-07-2012, 06:37 PM
I am talking about the diamater below the point it begins to narrow. I am looking at a new boom clamp and I would be attaching it below the "narrow" part.

I too do not have easy access to the my boat too.

01-07-2012, 08:14 PM
I think they are still 2.5 inches. in diameter.

01-07-2012, 10:50 PM
My camera mount is attached, but it looks like the top 9.5" or so of the pylon is tapered. The circumference goes from ~6.5" to ~7 7/8" which is about 2.5" diameter at the biggest point (if my math is correct...d=c/Pi). If you need additional info, my 2005 TT is about 20' from me:D mac

01-08-2012, 09:53 AM
Thanks macattack! That would make sense then that choices I have for the mounting bracket are 3" or 2 3/8". It is very likely the latter of these two.

I was searching the web and saw a reference to the 3" diameter pylon being used in older boats.