View Full Version : Peach State (Chapter 56) Meeting June 4, 2011
05-16-2011, 07:16 AM
The Peach State (Georgia, Alabama, Tennesee) Chapter of the PRA will meet at Rome, Richard B. Russell Airport (RMG) in the terminal at 8:30 AM Saturday, June 4, 2011.
There should be some machines around flying, assuming the folks in Alabama have collected their gyro trailers from up in the trees post the recent tornado activity, and meeting day weather permitting. June has traditionally been one of our best "flying" meetings.
We will break for lunch and head to the Rome "Berry Square Mall" Food Court sometime around noon and hold the formal meeting. Afterward, back to the airport and disburse.
05-16-2011, 04:34 PM
Me and the Girls will be there, Looking forward to the drive down and to get away from work.
05-16-2011, 07:29 PM
I came out blessed on the tornado deal, I got the trailer down but the blade rack is trash and still have a lot of work to get things back to where they need to be.
05-17-2011, 07:25 AM
I'm glad nobody got clobbered. Let me know if you need a hand putting anything back together...or breaking it. I can break things with the best of 'em! :)
05-17-2011, 08:13 AM
I plan to come. I have only been to one of the meetings before (actually I think it was a year ago). Can someone pm me either the gate code or arainge to meet me to let me in?
05-17-2011, 02:19 PM
Coolbaldguy: We'll be in the terminal. No code needed.
05-18-2011, 05:26 AM
Thanks Jon. You gonna have the Bulldozer there. The test flight video looks good
05-18-2011, 09:33 AM
No, the Bulldozer will not be there. It is in apart again. I broke a crankshaft during a test flight. There is a thread about it somewhere around here. The test flights were very positive...right up to the point it got really noisy for a moment then very quiet.
05-18-2011, 03:59 PM
That is the part I hate.....when it suddenly gets quiet.....
05-18-2011, 04:00 PM
I would have preferred the quiet to the noise just prior to the quiet.
05-20-2011, 01:27 PM
I might attend - if it's not raining this time !!!1!!!11!:)
I am hoping someone will have a two-seater i could get a ride around with.
(I am 6'3 /230 lbs. btw)
F.Y.I. - I am scheduled for surgery June 6, 2011. I have multi-layer spinal stenosis in the C-5, C-6, C-7 area.
05-20-2011, 01:36 PM
We'd love to have you, but unfortunately, there are mostly single-seats in our club at the moment. There is a Parsons 2 in progress and "The Bulldozer III" will return later in the year. Until then, we are ride-challenged. Great bunch of folks, though and some interesting single-seat machines.
05-20-2011, 01:50 PM
We will try to keep it interesting
05-23-2011, 01:16 PM
I have been out of the loop,,,,and didn't know George suffered some damages,,,,,and as well,,,,,Jon,,,,so,,,,you lost the crank,,,on the Subaru? Wow some serious stuff!
05-27-2011, 06:20 PM
Bump! June 4! Looks like good weather!
05-31-2011, 05:48 AM
We have had to move this quarter's meeting to Cedartown airport (4A4) due to a conflict with an IAC event at RMG. Please see the message:
URGENT! Meeting Venue Change June 4, 2011
For complete details and directions.
06-03-2011, 08:29 PM
Jon I just seen this post, WE, Melissa and I will see you at the Airport on Sat. morning. thanks.
06-11-2011, 10:09 AM
I was glad to fly at Cedar town this past Saturday , even though it was too hot and my lower back was killing me and my " mighty mac" was hard to start, but Lewis got me out of the pickle I was in, all went well,,,,and I made it home fine,,,,Am looking forward to our next gathering and the Club "T" shirts are great,,,,thanks Jon,,,for the work that went into getting the shirts printed up and the price was sooooo affordable at $10.00 I will probably buy a second one next meeting.
06-11-2011, 10:10 PM
Well i should have stayed longer i missed the deal on the shirts any chance of still getting some? Ron could you email me the part # for the piston rings we talked about? firstname.lastname@example.org it looked like a good
meet i didnt really care to fly for the parachute jumping going on there
06-12-2011, 08:49 AM
The 72 Mac Piston Re-Work
The most common 72 hp MacCullough Drone Engine has two (2) cast iron rings located approximately ¼ of the way down from the top of the piston. Bob Rogers and Butch Kuhns both have told me how to perform this re-work. Bill Parsons has also shown me this neat little trick OK here goes the scoop.
Get a machinist or if you can do this work your self, cut an additional ring grove 1/8th to 3/16th of an inch down from the top of the 72 Mac piston to receive a 90 Mac piston ring, the ring is 1/16 in thick. This 90 Mac piston ring is made of Chrome Molly, and can be obtained from Perfect Circle or from a ring set that fits a 1972 Ford Pinto 4 cylinder 1.8 Liter engine. The Ford Pinto ring set will come with an oil ring, some cast iron rings that fit the Mighty Mac and a chrome molly ring as well that is exact replacement for the 90 Mac rings, how about that?
Have the piston relieved at the top of the “ Fake “ rings that are cast into the piston, in other words “mill off” the top circumference part of the piston that has these “ fake” ring that are cast into the piston. This will allow room for the piston to expand and not seize up your engine when temperatures reach the 450-degree zone. As well, the extra ring at the top of the piston that you will be adding will transfer the high heat during combustion directly to the cylinder wall and the fins will dissipate the heat immediately instead of the heat traveling down the piston and swelling up the wrist pin area and thus causing a swollen piston to ruin your day!
If you are using the “AX” rods then no work need be done to the inside of the wrist pin area of the pistons, but if you are using “E” rods, you will need to relieve the inside of the boss of the piston area so that you will have a minimum clearance of .007 inch at both sides of the piston to rod clearance. Note that with the “E” rods there are copper washers that are on either end of the wrist pin. There has to be .007-inch clearance on both sides, or slide the piston to one side and measure a total of .015 inch with the copper washers installed. This .015-inch clearance allows adequate lubrication to the needle bearings at the wrist pin area.
Now, the way to obtain the rings for your objective.
The rings that you will need can be purchased from say,,,,, NAPA auto parts store, brand name being Perfect Circle brand. Get Perfect Circle “D.I.C.” 3&3/16 by 3/32 inch cast iron for the two bottom rings, and get Perfect Circle “M.B.C.M” Chrome molly alloy 3&3/16 inch by 1/16 inch for the top ring.
Note that some say that the three rings will create extra friction that the 90hp two-ring system doesn’t cause. Many gyro Mac flyers use this three-ring system and all seems fine. If you want to, leave out the very bottom ring on the re-worked pistons and see how this works. I use the three ring system and do not experience any drawbacks.
PS,,,,I as well E-Mailed you The Info
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