Can't find prop for 69 Glasstron

[reeac]

I purchased a 1969 Glastron and need a new prop. I ordered a 15.3 X 21 solas prop but it is hits the trim tab. The center part is longer than the original. I am replacing the size with the one that the book calls out for. All the prop searches start with Alpha 1 drives, mine is I believe an R before Alpha drives.

 

[Bondo]

Re: Can't find prop for 69 Glasstron

but it is hits the trim tab.

Ayuh,... You either need a different tab, or trim that 1...

 

[steelespike]

Re: Can't find prop for 69 Glasstron

There are tabs that are just a disk. Sometimes you can cut a notch in the tab you have.Perhaps you should give us your present max rpm and speed,motor,size of the boat? What are you changing from and why.While diameter isn't usually a consideration;why did you pick a prop with a big diameter.thats almost an inch bigger than the typical 21".When the difference approaches an inch it will affect your rpm.In my opinion if you allready have a 15"+ diameter your allrerady too big, unless you have a particular unusual application.

 

[reeac]

Re: Can't find prop for 69 Glasstron

I have a 17' 120 I/O. The prop is being replaced because it hit a rock and is done for. I was going with the replacement size listed in the book. I finally was able to make out the numbers on the old one and have ordered the exact same prop. Thanks for all the help.