Thanks Ron. One question - how did you scribe the edges of the new third cross-member to the contours of the sump shoulders?
Cheers, Randy ----- Original Message ----- From: "Ronald B. Frerker via CnC-List" <cnc-list@cnc-list.com> To: "cnc-list" <cnc-list@cnc-list.com> Cc: "Ronald B. Frerker" <rbfrer...@yahoo.com> Sent: Monday, November 14, 2016 10:15:51 AM Subject: Re: Stus-List Propeller I only had two members holding up the block. When I replaced the horizontal plate the 2nd time (don't ask) I put in a 3rd, right between the two original members. Just like the originals, I cut and formed the 3rd to rest on the shoulder of the bilge sump. I used 2in thick paela (sp?) which is a mexican wood that's dense like ironwood and very oily. Mexicans use it for fence posts and it lasts a hundred years without rotting. It's hell to cut; broke a band saw blade and ruined two jig saw blades. Didn't do the table saw blade much good either. Maybe I should have found a better method for cutting??? The two originals were doubled marine plywood about 3/4in thick (1.5in total) sandwiched between two smaller metal trapezoids (leaving a 1in border of plywood) bolted through. They were getting soft in spots on top, but still had some integrity, so I left them alone. No sign of distortion where they rested on the shoulder. Used paela for the horizontal plate that the mast rests on as well. Been two years now and it's showing no deflection with rig tuned up. Ron Wild Cheri C&C 30-1 STL From: RANDY via CnC-List <cnc-list@cnc-list.com> To: cnc-list <cnc-list@cnc-list.com> Cc: RANDY <randy.staff...@comcast.net> Sent: Sunday, November 13, 2016 2:51 PM Subject: Re: Stus-List Propeller Thanks Gary. My RSA gives +6 for a fixed two-blade prop, and other guys in my club think a folding prop is worth even more than that. There's at least one RSA (NCPHRF I think) that gives +12. Thanks also for the info on the mast step. I'll go with three cross-members if I can, while still getting a pump into that sump and not covering up a keel bolt. Otherwise two non-rotting, non-deflecting cross-members made out of fiberglass board, and properly designed and installed, ought to be better than the original setup, and certainly better than my current two cross-members. Cheers, Randy From: "Gary Nylander via CnC-List" <cnc-list@cnc-list.com> To: "cnc-list" <cnc-list@cnc-list.com> Cc: "Gary Nylander" <gnylan...@atlanticbb.net> Sent: Sunday, November 13, 2016 1:11:26 PM Subject: Re: Stus-List Propeller Our PHRF rules give you 3 seconds/mile for a fixed prop. I didn’t think that was enough, so went with a flex-o-fold. On the mast step, I have three cross members under the oak block (which looks just like yours) but do not have that big oak block assembly at all. I think some previous owner built that thing to make up for the lack of support and the fact that the fiberglass guys at the factory didn’t seal the bottom of the cross members, which do a great job of wicking up any stray water in the bilge. Gary #593 _______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
