---------------------------------------------------------- RV7-List Digest Archive --- Total Messages Posted Sun 03/12/06: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:06 PM - Re: Question - Countersinking Wing Spar (Scott R. Shook) ________________________________ Message 1 _____________________________________ Time: 04:06:33 PM PST US From: "Scott R. Shook" Subject: RE: RV7-List: Question - Countersinking Wing Spar Thanks for the follow-up Dan. Worked perfect!! I rechecked my test dimple and the skin was slightly off. I was able to complete both spars' countersinks yesterday. _____ From: owner-rv7-list-server@matronics.com [mailto:owner-rv7-list-server@matronics.com] On Behalf Of Dan Checkoway Sent: Saturday, March 11, 2006 8:49 AM Subject: Re: RV7-List: Question - Countersinking Wing Spar Follow the instructions. Rivet the nutplates first they will serve to center the pilot. When I built mine I didn't trust that. I could have. I wasted all sorts of time using a backup strip with a pilot centering hole. Worked fine but took too long. Could have done it in less than half the time -- by (a) following the plans, and (b) using a ball bearing microstop cage rather than the cheap bushing version that came with my Avery kit (I upgraded to a ball bearing cage from Avery eventually). )_( Dan RV-7 N714D (833 hours) http://www.rvproject.com ----- Original Message ----- From: Scott R. Shook Sent: Saturday, March 11, 2006 7:14 AM Subject: RV7-List: Question - Countersinking Wing Spar I have come to the point where its time to CS the main spar and the #30 Countersink that is recommended by the plans seems to run out of blade before it makes the CS hole deep enough for the #8 screw. My test piece that I am using is dimpled correctly. I have the 3-blade CS set from Cleaveland. PS) I already have made myself a pilot out of a scrap 1/8 aluminum stock. That part works great Any help would be appreciated. Scott N696JS - Wings