Bertram31.com General Bulletin Board

Re: how much is too much ?

Posted By: Walter Kaprielian
Date: Sunday, 5 March 2006, at 1:21 p.m.

In Response To: how much is too much ? (Doug Crowther)

Doug-I have 20 X 20's on my Cummins 210's and think I am a bit underpropped. I would bet you're going to go a lot faster with the 21" props. I think Uncle Vic has 21 X 23's (or 22's) on his 250's so I think you can go higher in pitch. I'd suspect 27 might be a bit much and my guess would be 25. Talk to a prop place and discuss the advantages of cupping rather than more pitch as it will allow you to run slower on the low end while the cupping takes effect on the high end of rpms. I've found Bossler and Sweezy in long island very helpful. Walter

Messages In This Thread

how much is too much ?
Doug Crowther -- Sunday, 5 March 2006, at 12:47 p.m.

Re: how much is too much ?
Walter Kaprielian -- Sunday, 5 March 2006, at 1:21 p.m.