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All Forums >> RC Airplanes >> Pylon Universe - RC Pylon Racing >> Q-500 Racing >> Very good Guy, Very bad happenings Page: [1]

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Very good Guy, Very bad happenings - 9/4/2002 10:51:32 PM   
Gastronom-RCU


 

Posts: 592
Joined: 1/4/2002
From: gone
Status: offline 		Hey there gang. I wanted to share with you something that has happened.
A couple of months ago I hear from a friend that I haven't seen in about a year. Turns out that he lives about an hour from me and loves to pylon race. He was originally from Florida where he used to fly the 'real' pylon planes, but now he settles for the half a pylon using a .25 wo/ tuned pipe. This guys name is David for any of you that know him, he has a massive army of planes and even has a 'Blue Angels' jet witha .77 DF. Anyway, he offered to rebuild my pylon racer for me if I agreed to race with him this year, so what else, I agreed. Took him maybe 1.5 weeks to finish up the slop that I had started and return it to me. The plane flies very good and looks sharp. Now this Sunday we had our monthly races. He and I were in the first heat. I decided to try out the Fox .25 bb that he got runnig for me and he had a OS .25 FX that was getting airbubbles in from the needle valve. Of course he beat me, both the engine and pilot skillz outweigh mine, but at the last lap, almpost as soon as he crossed the finish line, his right gimble almost crumbled in his hands. I wouldn't have believed it if I hadn't of seen it. So the stick is on the ground with no way to control the airplane, so what does he do, same thing that most of us would have done, throttle back and watch were it hits. anyway it was a complete mess, we even ost his one tire that he had. He is a very good sport so he assisted me with my flying the resdt of the day and went home with a broken up plane. What gets me: I felt bad for what happened and what he did for me, so I tried to give him mine, he wouldn't take it. Said he'd have 2 built before next months race. I hope he calls and lets me assist him with these planes. Boy now that is what I call a real sportsman. Wow what competition. I did receive 2nd place for the day, I bet that next month I have that pretty OS .25 FX mounted and ready to run. Well thanx fer listening.
       Post #: 1

Gimble Crumble - 9/5/2002 10:33:30 PM   
Bill Vargas



Posts: 1572
Joined: 1/6/2002
From: Team Coldies, CA, USA
Status: offline 		Man, thats a Drag the gimble crumbled!,,,

I still make Q500 kits,,, let me know if you interested and I have lots of little secrets to make'em go fast

BV
NMPRA 41C

_____________________________

If it ain't leaking oil, then something's wrong,,, USMC, RETIRED!

(in reply to Gastronom-RCU)
       Post #: 2

Very good Guy, Very bad happenings - 9/5/2002 11:43:01 PM   
Gastronom-RCU


 

Posts: 592
Joined: 1/4/2002
From: gone
Status: offline 		Heck yeah I would love to have some of your secrets. I believe taht I have too much control at the moment becasue I pull through a turn and it sux the fuel rom my carb and the engine leans out until it almost dies. Would you think that a one way valve would help with this problem? I have also been told that I am over doing it when I fly, as far as using rudder to correct attitude. I guess tha tI just like to see the thing move. What I am going to work on this month and throughout the winter is trying to almost knife edge the course. Would that help speed up the plane? I'm thinking that since I'll have to feed continuous controls in that it might slow it down even further.
Anything that you would like to add would be GREATLY appreciated.
Thanx, Gastronom

(in reply to Gastronom-RCU)
       Post #: 3

Very good Guy, Very bad happenings - 9/6/2002 12:00:47 AM   
daven



Posts: 7012
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		With a .25fx on the plane, you will have trouble holding knifeedge around the course. With the extra rudder needed, you will just be slowing your plane down. Just tame your throws down a bit, and try to fly as smoothly as possible. I usually control my altitude with my banks in the turns. If I am high I overbank before I pull elevator (please be carefull doing this). If I am low, I don't quite bring the plane to 90 degrees before I pull. Moving your C.G. back will also help with your knifeedge.

Your fuel problem could be solved with a bladder fuel tank. I believe Dub Jett is making a 4oz version which would be perfect for the .25.

available at : [url]www.jettengineering.com[/url]

_____________________________

Dave Norman

klasskote.com
supertrc.com

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       Post #: 4

4oz bladder tanks - 9/6/2002 12:06:30 AM   
daven



Posts: 7012
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		I just checked the jett tanks, and I don't see a 4oz tank listed.

I'm almost sure, I've seen a 4oz bladder somewhere. Is it Tetra??

_____________________________

Dave Norman

klasskote.com
supertrc.com

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       Post #: 5

tetra - 9/6/2002 12:35:27 AM   
splatt



Posts: 651
Joined: 1/30/2002
From: splattsville, MN,
Status: offline 		Tetra make some sub 4 oz, sizes too. This year ever since going to bladder tanks I can say bye-bye to any tuning problems I've ever had. No bubbles, no problems. Now I can concentrate on avoiding mid-airs

(in reply to Gastronom-RCU)
       Post #: 6

Q500 - 9/6/2002 2:37:57 AM   
Bill Vargas



Posts: 1572
Joined: 1/6/2002
From: Team Coldies, CA, USA
Status: offline 		[QUOTE]Originally posted by Gastronom
Heck yeah I would love to have some of your secrets. I believe taht I have too much control at the moment becasue I pull through a turn and it sux the fuel rom my carb and the engine leans out until it almost dies. Would you think that a one way valve would help with this problem? I have also been told that I am over doing it when I fly, as far as using rudder to correct attitude. I guess tha tI just like to see the thing move. What I am going to work on this month and throughout the winter is trying to almost knife edge the course. Would that help speed up the plane? I'm thinking that since I'll have to feed continuous controls in that it might slow it down even further.
Anything that you would like to add would be GREATLY appreciated.
Thanx, Gastronom [/QUOTE]

Hey G, shoot me a email with your speed questions

BV
NMPRA 41C

_____________________________

If it ain't leaking oil, then something's wrong,,, USMC, RETIRED!

(in reply to Gastronom-RCU)
       Post #: 7

Very good Guy, Very bad happenings - 9/25/2002 11:39:38 AM   
Teachu2


 

Posts: 852
Joined: 12/5/2001
From: Bakersfield, CA, USA
Status: offline 		Hey, Bill, you back to cutting RacerIIs?

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Trent Combs
Fly 'em until the last piece stops!

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       Post #: 8

Racer II - 9/26/2002 2:18:22 AM   
Bill Vargas



Posts: 1572
Joined: 1/6/2002
From: Team Coldies, CA, USA
Status: offline 		Teach, Umm, I never stopped cutting kits, except for while at the NATS

It just got erased from that other website for other reasons

BV

_____________________________

If it ain't leaking oil, then something's wrong,,, USMC, RETIRED!

(in reply to Gastronom-RCU)
       Post #: 9

Very good Guy, Very bad happenings - 9/26/2002 8:30:20 AM   
Teachu2


 

Posts: 852
Joined: 12/5/2001
From: Bakersfield, CA, USA
Status: offline 		Thanks, Bill. You've got a PM.

_____________________________

Trent Combs
Fly 'em until the last piece stops!

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       Post #: 10

Very good Guy, Very bad happenings - 9/26/2002 8:12:47 PM   
banktoturn



Posts: 713
Joined: 8/22/2002
From: Bloomington, MN,
Status: offline 		Anybody,

I am really curious. I read Gastronom's comment about wanting to almost knife-edge the whole course. I know nothing about pylon racing. Is this a standard technique? My guess would have been that it would increase drag.
TIA for any feedback

banktoturn

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       Post #: 11

Very good Guy, Very bad happenings - 9/27/2002 1:05:15 AM   
SSAN



Posts: 446
Joined: 1/19/2002
From: Queen Creek, AZ, USA
Status: offline 		banktoturn,

There would be no increase in drag wheather it's flying level or on a knife edge. The plane doesn't know if it's on a knife edge or level flight. Therefore, the drag are the same. However, if one was to use a lot of trim to fly the plane on knife edge, then there would be an increase in drag due to the deflection of the trim's.

The reason Gastronom want to set his plane to fly knife edge on course is because that is how we all fly/race around the pylons. It make for easier and faster flight due to very little movement that we have to make to turn around the course (i.e. less movement or deflection on control surfaces = more speed). Hope this help.

Sam S.

< Message edited by SSAN -- Sep 26 2002 8:37PM >

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SAM-RAI... The Ultimate WOOD Q-500!
www.Sam-RaiRacing.com

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       Post #: 12

Very good Guy, Very bad happenings - 9/27/2002 1:14:02 AM   
banktoturn



Posts: 713
Joined: 8/22/2002
From: Bloomington, MN,
Status: offline 		Sam S.,

Thanks. The conventional wisdom ( mine at least ) would be that using the side of the plane in level flight would cost you because of increased induced drag, even though induced drag is very low at these speeds. I have to assume the the net drag caused by rolling at every pylon is a bigger factor, or else the turns are better executed because you are already banked for them. Very cool!

banktoturn

(in reply to Gastronom-RCU)
       Post #: 13

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