Why do pattern guys do this?  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       


Advantage 2x2 meter F3A Pattern - RTF
Seller:  dbarrym
Details:   $1,050.00   |  12/1/2008   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> RC Airplanes >> Pattern Flying >> Why do pattern guys do this?
Page: <<   < prev  1 2 [3] 4   next >   >>  

Login
Message << Older Topic   Newer Topic >>
Why do pattern guys do this? - 5/30/2003 12:16:00 AM   
robert


 

Posts: 2448
Joined: 3/2/2002
From: private, IRELAND
Status: offline 		Eh, I was really only kiddin.....I am not really an excellent flier at all, infact, I am not really good. But I have a whole summer ahead of me to practise and have fun with a Synergy 90 and the Funtana.....both with gorgeus YS's by the way, which....ROCK!!!!
Summer holidays tomorrow, followed by three months of flying.....sweet.

< Message edited by robert -- May 29 2003 7:21PM >

(in reply to Mustang Man-RCU)
       Post #: 51

Why do pattern guys do this? - 5/30/2003 1:44:08 AM   
Ryan Smith


 

Posts: 761
Joined: 3/2/2002
From: Browns Summit, NC, USA
Status: offline 		Roberto...

When did you get a Synergy 90? You have too much cool pattern stuff for someone that's my age. IM MOVING TO IRELAND!!

_____________________________

Team JR/Horizon Hobby, YS Parts and Service, QQ Aircraft Company, Evil-R/C Products

(in reply to Mustang Man-RCU)
       Post #: 52

Shutoff on Landing - 5/30/2003 3:19:07 AM   
RACE76


 

Posts: 73
Joined: 2/28/2002
From: San Diego, CA, USA
Status: offline 		I have not flown Pattern for quite a while but I am sure the Tony F. you guys are disagreing with is a much more accomplished pilot than most on this site. Also has flown everything from drones to Heli's. Tony is also a very accomplished builder as well.If my memory serves me right there is a guy from Argentina that Tony had in his home in Miamisburg,Ohio years ago and both were building planes together. Tony I just found a Challenge 11 in the box and am going to buy it just to have it. Also just moved back to southern Ca. Where are you flying? Believe me if Tony says it....it is because he has done it. I would take lessons from him all day long.Just my opinon. I think Tony even won a championship in Australia once!!!

(in reply to Mustang Man-RCU)
       Post #: 53

A bit of all is true! - 5/30/2003 3:39:57 PM   
Benoit


 

Posts: 66
Joined: 6/28/2002
From: Cortil-Noirmont, BELGIUM
Status: offline 		Hi Guys,
I think that everybody got a part of the answer, due to the field and the plane you are flying.
Physical rules are the reality. You can not compare the residual idle trust from a 2stroke .60 on a relatively high wingloaded plane with a 11/8 prop and a 1.40 with a 15/12 or even 16/14. The theoretical braking speed of a 12 pitch prop at 2200rpm (whitch give around 2000 at zero airspeed) is around 25mph (40km/h) what is just above the stalling speed of a modern 10lbs F3A plane ( plane with a thrust to weight ratio well above one and a wing loading lower that the curare one!) It means that above that speed, the prop brakes, and below that 25mph, the prop pulls. At a relative slow approach speed, the stopped prop brakes around or more that at idle. (At higher speed, it's the opposite due to induced turbulences). About the roll out, when you land on a concrete runway, the stopped engine give you the shorter one, definitely. Just assist to a f3A competition, sometimes, you can see that even good pilotes got problems to stop the plane on 100m runway! The 1.4 is still pulling the ligh airframe! (Some people put foam against the wheels to brakes them) The grass field case is different, his braking action is good but mine is in so bad shape that I prefer to stopped the engine as I will not be able to taxi anyway with the small 2inch wheels and the prop clearance is too limited. About the big 4stroke on a soft engine mount, I don't like to hear those rough really low idlespeed vibrations, I can't imagine the useless stress that it puts on that so light structure, it hurts!
Just my 2 eurocents!
Sorry for the approximate english!
Have fun,
Ben

(in reply to Mustang Man-RCU)
       Post #: 54

Why do pattern guys do this? - 5/30/2003 4:06:39 PM   
Benoit


 

Posts: 66
Joined: 6/28/2002
From: Cortil-Noirmont, BELGIUM
Status: offline 		By the way,

Tony, I really appreciate your search for excellence.

Thanks for your dedication, involvement and proficiency.

And I like your bipe!
Ben, a bipelover

(in reply to Mustang Man-RCU)
       Post #: 55

That's what I wanted to say - 5/30/2003 4:50:16 PM   
MarkNovack



Posts: 1547
Joined: 2/9/2002
From: Nameche, BELGIUM
Status: offline 		Benoit has the facts that I could not verbalise. I'm not the person to sift through prop rpm/thrust/speed data, but his broken English explaination fairly well explains why my rollouts with motor turning are longer than with motor off.

Mark

(in reply to Mustang Man-RCU)
       Post #: 56

Why do pattern guys do this? - 7/7/2003 3:27:03 PM   
mrbonk



Posts: 600
Joined: 2/18/2002
From: BundabergQueensland, AUSTRALIA
Status: offline 		One of the guys at my club who has recently started flying pattern actually mentioned the 'shutting the engine off on final' thing to me recently. He's got a pretty good reason for doing it though......with his YS1.40DZ idling, it shakes the absolute sh*t out of the airframe I kid you not....it's scary to see how much this thing shakes. It's so bad that he doesn't even let it idle when he starts it.....gets it going and then it's up to 1/3 throttle or more until takeoff. I've seen a couple of other models with these 1.40DZ's in them.....one of them shook so much it spat the cowl off when it burped at idle I think that was due to the engine actually striking the inside of the cowl!


_____________________________

MrBonk
http://www.mrbonk.com

(in reply to Mustang Man-RCU)
       Post #: 57

Why do pattern guys do this? - 7/11/2003 9:48:27 AM   
patternflyer1



Posts: 1366
Joined: 7/3/2003
From: Tracy, CA, USA
Status: online 		I shut down for the reasons of stopping the plane, and also, we're not allowed to run off the runway or we get a zero. In any direction. Just habit causing, I only do it with the pattern planes though. I have it set up on a switch though, as i think quite a few of us do. It's much easier to hit the switch than it is to mess with the trim. Well take care

(in reply to Mustang Man-RCU)
       Post #: 58

Why do pattern guys do this? - 7/11/2003 1:24:55 PM   
mrbonk



Posts: 600
Joined: 2/18/2002
From: BundabergQueensland, AUSTRALIA
Status: offline 		[QUOTE]Originally posted by patternflyer1
I shut down for the reasons of stopping the plane, and also, we're not allowed to run off the runway or we get a zero. In any direction. Just habit causing, I only do it with the pattern planes though. I have it set up on a switch though, as i think quite a few of us do. It's much easier to hit the switch than it is to mess with the trim. Well take care [/QUOTE]

Yep, I have a throttle cut switch programmed for all of my models. I only did it originally because I had to set it up for the helicopter (unless I wanted to put my finger over the exhaust.....no thanks!), but it's certainly handy to be able to shut the engine on anything down from the radio.


_____________________________

MrBonk
http://www.mrbonk.com

(in reply to Mustang Man-RCU)
       Post #: 59

Why do pattern guys do this? - 7/11/2003 1:40:30 PM   
Irish Rob


 

Posts: 42
Joined: 7/3/2003
From: Galway / Ireland, USA
Status: offline 		Hi,
E o' Callaghan wrote
" his reasoning was that it was one less thing to worry about for a student pilot trying to get the landing setup just right "

I also live in Ireland, was trained by a pattern buff and was told he cut the throttle for the same reason.

Do you fly mode 4 by any chance (ail on left) ?

(in reply to Mustang Man-RCU)
       Post #: 60

Engine Out Landings - 7/30/2003 10:07:48 AM   
rctestpilot1


 

Posts: 15
Joined: 7/17/2003
From: Saanich, BC, CANADA
Status: offline 		I'm a pattern pilot and I primarily shut down the engine to avoid taking chucks out of the prop on touchdown. My Olympian Medal with retratcs have very little clearance so any compression or hard landings would cost me big bucks in carbon props.

Hope that helps.


Mark

(in reply to Mustang Man-RCU)
       Post #: 61

Engine out landings - 7/30/2003 7:46:33 PM   
Bob Hartwig


 

Posts: 83
Joined: 3/23/2003
From: Portage, WI, USA
Status: offline 		How about this set up. Not my original idea, I believe it was Chis Lakin that showed me.

Instead of a kill engine switch, make it a kill in 8-10 seconds switch. This is a super low idle that provides great braking characteristics. If you hit the switch just as you enter the runaway area, you still have time to throttle up and go again if needed. Covering the aspects that Tony mentioned.

This RPM will vary, but try for 1500-1700 RPM, or even lower for some well tuned set ups.

Not for everyone, but I have been using this for years. I like taxiing back on a good field.

_____________________________

Bob Hartwig
NSRCA 41

(in reply to Mustang Man-RCU)
       Post #: 62

Why do pattern guys do this? - 7/30/2003 8:08:28 PM   
Trout


 

Posts: 11
Joined: 7/29/2003
From: na, IL, USA
Status: offline 		So, how about it guys? Is anyone willing to enlighten me or do I have to take up pattern flying to find out?

Hi,,Im New to this forum,, But not new to pattern,, And this topic touched me enough to respond
I had always wondered years ago about killing the engine during the landing until one very scarey day.
Although,, i used to ALWAYS taxi back to my pit area, One day,, Murphy peeked around my shoulder i guess, Taxing back with my old pheonix 8 with an old OS fsr and mac pipe,, magically at about 20 feet from myself, the throttle servo decided to run a muck~!!
instantly, i had a monster nipping its way at me as it left the ground,it impacted And TOTALED my old goldberg handi tote .
From that day on, i have always killed my motor on landing,, I just felt like murphys always watching,, And honestly,,,,
The thought of the newer 16-17 inch props, with todays great horsepower engines faceing myself or the pit area running just kinda scares me,,, But,, I admit, theres alot of valid reasons to,, or not to kill the motor,, But ME,,, Kill or learn to duck fast is my motto!!
trout

(in reply to Mustang Man-RCU)
       Post #: 63

throttle kill switch (which switch) - 7/30/2003 8:26:48 PM   
swlarcham



Posts: 392
Joined: 4/9/2002
From: DeQuincy, LA, USA
Status: offline 		After reading all these "answers", I've come to the conclusion that killing the engine is NOT a bad thing. Anyway I have been killing mine after I turn down the taxi way -what's the difference.

I've been doing it by pulling the idle trim all the way back.
Been thinking about a kill switch for a while. I've only read of using the gear switch, but my new plane will have retracts and I don't want to set up any plane with the gear switch doing something else ( I KNOW I'D END UP TRYING TO DO THE OTHER ON MY EXPLORER( retract plane) AT THE WRONG TIME

What switch do you guys use. I know there are still a lot of you with planes with retracts - so do you use a kill switch -or not?

thanks
Eddie

(in reply to Mustang Man-RCU)