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Author Topic: Comte AC-4 'Gentleman'. Gary Mayes plan.  (Read 3845 times)
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Pete Fardell
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« Reply #100 on: May 29, 2019, 05:38:48 AM »

Thanks John; I’ve reshimmed to 1/32 and will try the glide again first.
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Pete Fardell
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« Reply #101 on: June 24, 2019, 04:51:12 PM »

Psst... Wanna see some REALLY nice grass?

I suddenly realised it was almost flat calm, not raining and not dark yet, so I nipped down to my field with the Comte to see if the reshimmed tailplane was a goer. Unfortunately, in my haste I brought my smaller indoor stooge, not the big outdoor one, and the Gentleman’s stately backside is just a bit too fat for it. So it was finger winds only as the light began to fail. At least I didn’t risk losing it in a tree though. Glide did look a little smoother than before and just 150 turns got it away for a steady little flit (sorry, no vid) but only after I added some upthrust at the nose to counter the new less elevated tail setting. So not sure how useful the session was really beyond ascertaining it still flies after the repair. Is it a safe bet that with more turns the extra upthrust won’t be required?
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strat-o
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« Reply #102 on: June 24, 2019, 05:22:55 PM »

Better copyright that first grass picture before a greeting card company snaps it up!
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OZPAF
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« Reply #103 on: June 24, 2019, 08:47:47 PM »

Quote
I added some upthrust at the nose to counter the new less elevated tail setting.

Pete you will probably need to move the CG back a little to retain the glide with the tail raised. This should eliminate the need for upthrust and you may still need a small amount with more winds.

John
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Pete Fardell
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« Reply #104 on: July 07, 2019, 12:27:20 PM »

Just did a bit of a double take as I came across this pic, in the Sept 88 AM. It’s Gary Mayes at Old Warden with his original i.c. version.
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Pete Fardell
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« Reply #105 on: July 07, 2019, 12:42:08 PM »

Meanwhile on mine... last week I repaired the broken side stringers and tissue damage from the slipped motor peg incident at Buckminster, so am good to go again. Even managed to salvage the front of the white stripe!

One issue I had in the wind was the knock off wings blowing out of their peg hole moorings despite doubling up the inter-wing elastic band to increase the tension. I resorted to Sellotape, but there must be a better solution. Longer pegs?
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Squirrelnet
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« Reply #106 on: July 07, 2019, 01:07:28 PM »

Another neat repair Pete. Longer pegs might work but then they risk breaking more easily on a hard arrival. Given the conditions at Buckminster, maybe a bit of tape is the easy way in to deal with problem in blustery conditions. I'm assuming the wings tend to pull out while you're handling it in the wind rather than in flight ?
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Pete Fardell
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« Reply #107 on: July 07, 2019, 01:23:59 PM »

Yes, it’s while holding it waiting for a lull that’s the tricky time. Probably ok in calmer conditions as you say.
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billdennis747
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« Reply #108 on: July 07, 2019, 02:11:24 PM »

One issue I had in the wind was the knock off wings blowing out of their peg hole moorings despite doubling up the inter-wing elastic band to increase the tension. I resorted to Sellotape, but there must be a better solution. Longer pegs?
Looking at that tube, Pete, it wouldn't take the bands that I would be using. However if you are using orthodontic bands you can pull them a lot tighter. Woodhouse does a range of sizes and maybe several 3/8" would do the trick, and fit in the tube
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marcin_pl
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« Reply #109 on: July 08, 2019, 07:14:47 AM »

For knock-off wings I prefer using thin steel wires (around 1mm - 1,5mm diameter) and alu tubes in wings. The wires should protrude from fuselage about 5cm or so. It's flexible but allows for some "travel" before disconnection.

Marcin
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OZPAF
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« Reply #110 on: July 08, 2019, 08:05:50 PM »

You are establishing a benchmark for repairs Pete. Very neat.

John
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3view
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« Reply #111 on: September 04, 2019, 04:54:19 PM »

Pete,

Impressive flight scores at the nats.  Well done!

Sorry I didn't witness them.

Steve
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Russ Lister
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« Reply #112 on: September 04, 2019, 05:35:26 PM »

I'll put my video up ... a quality flight (the first flight) but a poor quality video!
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Pete Fardell
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« Reply #113 on: September 04, 2019, 05:45:02 PM »

Thanks, Steve. Very much enjoyed your flights too, as did many in the audience from numerous comments I heard. You’ve certainly got people talking!
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Pete Fardell
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« Reply #114 on: March 27, 2020, 09:24:15 AM »

Andrew Boddington's emailed me as he's thinking of re-running the Gary Mayes Comte plan in Aeromodeller and wanted some pics of my rubber conversion build. I've sent him some, but he also wondered if I had contact details for Gary Mayes. I don't but said I'd ask on here. If anyone can help, PM me please and I'll tell Andrew.
Thanks!

PS I may not be able to fly the Comte at the moment, but there's nothing to stop me posting this shameless 'vanity shot' of it with the Selby and Credgington trophies! (Well nothing except natural modesty perhaps!  Grin)
Both flying only contests of course, so testament to Gary Mayes' design skills.
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bobson
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« Reply #115 on: March 27, 2020, 09:59:05 AM »

Hadn't seen this build before, but it's absolutely inspiring. Nice job. I'm tempted to build one now after I get my Mooney done!
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bobson
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« Reply #116 on: March 27, 2020, 10:14:42 AM »

After reading through the thread, I have a question -- how are the wings fixed in place? Do the struts provide rigidity, or are the rubber band and dowels through the root ribs enough?
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Pete Fardell
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« Reply #117 on: March 28, 2020, 05:05:49 PM »

After reading through the thread, I have a question -- how are the wings fixed in place? Do the struts provide rigidity, or are the rubber band and dowels through the root ribs enough?
Yes, the struts keep things rigid and set the wings’ dihedral, and the dowel pegs and the rubber band in the tube hold them in place. I’d have made the fuselage peg stubs a bit longer if I did it again as the wings sometimes come loose on breezy days.
Here’s a pic...
Hope that makes things clearer.
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