RE: C-ARF Ultra Flash build Thread + Video    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: sailing1, straitnickel, mitchilito, spike5150, Bob_B, Canadian Man, BoomerSooner, BlueBus320
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> RC Jets >> RE: C-ARF Ultra Flash build Thread + Video
Page: <<   < prev  90 91 [92] 93 94 95 96 97 98 99   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 10:02 AM   
Malcolm H



Posts: 432
Score: 100
Joined: 10/24/2002
Last Login: 5/23/2013
From: glasgow, UNITED KINGDOM
Status: offline 		I was out in Tenerife a couple of weeks ago and went flying with Ruyman. He is a very acomplished pilot but the day we went flying there was a strong 90 deg crosswind on their very short and narrow runway and he decided not to fly the Ultraflash but we did fly a Habu and a horrifically quick electric pylon racer which was nearly as fast as a Flash.

It is me who has been encouraging him to try a little less flap and a small amount of crow because that is the way I fly my Ultraflash. I totally agree with Dave that it doesn't NEED crow but what I have found as a very experienced F3A pilot but low time turbine pilot that coupled with a little less flap, it helps to extend the safe landing speed window. Without it I found I had to hit the correct airspeed exactly or I would end up with a stall and drop from a couple of feet or a too high speed touchdown. The end result of either is a nose to tail bounce down the runway that doesn't do your wing tips any good. I think once my energy management improves it might be possible to put back another 20mm of flap and maybe remove the crow to have an even slower touchdown or steeper approach but on the sites I fly at I'm happy with the 80mm flap 6mm crow setup I have now.

Malcolm

Hide Signatures

(in reply to Dave Wilshere)
       Post #: 2276

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 10:03 AM   
Ali



Posts: 4696
Score: 135
Joined: 4/2/2002
Last Login: 5/23/2013
From: Northamptonshire , UNITED KINGDOM
Status: offline 		All a bit of light hearted fun to try and warm up this cold a$$ day. I have found that in many cases, a set up that works for one, may not be suited to another's flying style. "each to their own" as they say.

_____________________________

Al''''s Hobbies. Airworld. BVM, Tams, Jet Cat, AMT, Skymaster, FEJ, pull over, Tomahawk, Skygate, C-ARF, Jet-Teng,Kingtech

Hide Signatures

(in reply to Ali)
       Post #: 2277

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 10:04 AM   
paulhat


 

Posts: 70
Score: 100
Joined: 12/22/2006
Last Login: 5/16/2013
From: , AUSTRALIA
Status: offline
quote:

ORIGINAL: Dave Wilshere

How many flights you guys got on the retracts? What sort of surface are you flying off? dry, dusty? The thread getting clogged seems to be the short fall that can cause issues.

Dave

Hi Dave,

I have some Electron ER-40's in a Reaction and have had about 30 flights off a dusty dirt strip.
No issues at all so far. I do take you point about the threads though. Will make sure I keep a good eye on them.

Have another set of ER-40's going into my second UF. Also have a set of the electric brakes from Electron that I can't wait to try.
Will get a video up once I have them in the plane.

On another note, I have decided to put a Kingtech 100G in this one. It's my second Kingtech but the first of the G series.
Anyway ran it up on the weekend with diesel ( I have been running diesel in a K140 since new) and it goes great. Only complaint I would have is the white smoke that comes out after shutdown. Not the engines fault I know but I wish it didn't do it

Regards,

Paul.

Hide Signatures

(in reply to Dave Wilshere)
       Post #: 2278

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 10:07 AM   
paulhat


 

Posts: 70
Score: 100
Joined: 12/22/2006
Last Login: 5/16/2013
From: , AUSTRALIA
Status: offline
quote:

ORIGINAL: Ali

All a bit of light hearted fun to try and warm up this cold a$$ day. I have found that in many cases, a set up that works for one, may not be suited to another's flying style. ''each to their own'' as they say.


Hi Ali,

I think the best thing about crow is the noise that it makes
Reaction really whistles!! (slows it down nice as well).

Paul.



Hide Signatures

(in reply to Ali)
       Post #: 2279

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 11:22 AM   
Ruymán


 

Posts: 51
Score: 100
Joined: 6/1/2011
Last Login: 1/24/2013
From: S/C de Tenerife, SPAIN
Status: offline 		Thanks for your tips, I think that you proves the friend Malcom settings and if you don't like me will come back to the same behavior.

Thank you very much friends! 

Hide Signatures

(in reply to paulhat)
       Post #: 2280

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 11:51 AM   
mitchilito


 

Posts: 69
Score: 100
Joined: 12/16/2008
Last Login: 5/24/2013
From: Morehead City, NC, USA
Status: online 		I, for one, find this on going debate about crow very interesting. Especially because it is being waged by a couple very proficient jet pilots.

Crow absolutely transformed the landing characteristics of my Classic Flash. I'm waiting for my ultra upgrade package as we speak and I can guarantee you that I will be trying both crow and crowless when I get it upgraded. Then I'll know for sure who's right

Hide Signatures

(in reply to Ali)
       Post #: 2281

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 12:08 PM   
Dave Wilshere


 

Posts: 6271
Score: 108
Joined: 6/12/2002
Last Login: 5/23/2013
From: Watford, UNITED KINGDOM
Status: offline 		Everyone is right! Technique will affect what works for you for sure.

The Classic Flash is a completely different animal, its was Stevie in our club who first tried CROW on the CF years ago and it transformed most people's chance of landing it on our 90m grass strip.

In have been using CROW for nearly as long as I have been flying turbines, we always had a small strip so an FD67 powered Cyclone was one of the first and my 1/7th kit AW L-39 followed back in 2002 as it is heavy and lacking flap! Some aeroplanes really gain, others not so much

Enjoy

Dave

_____________________________

Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BV

Hide Signatures

(in reply to mitchilito)
       Post #: 2282

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 12:28 PM   
Rob Howarth


 

Posts: 231
Score: 110
Joined: 5/11/2005
Last Login: 5/21/2013
From: Wooburn Green, UNITED KINGDOM
Status: offline 		Even my friend Sheryl loves a bit of 'Crow' - I bet you'd love for her to convince you Dave..................

Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to Dave Wilshere)
       Post #: 2283

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 2:11 PM   
Ali



Posts: 4696
Score: 135
Joined: 4/2/2002
Last Login: 5/23/2013
From: Northamptonshire , UNITED KINGDOM
Status: offline 		Yep. Business really is that slow! Special thanks to Rob H and Birdy for their inspiration and behind the scenes motivation!





Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

Al''''s Hobbies. Airworld. BVM, Tams, Jet Cat, AMT, Skymaster, FEJ, pull over, Tomahawk, Skygate, C-ARF, Jet-Teng,Kingtech

Hide Signatures

(in reply to Rob Howarth)
       Post #: 2284

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 2:12 PM   
Duncan



Posts: 1310
Score: 110
Joined: 10/21/2008
Last Login: 4/13/2013
From: Coventry, Warwickshire, UNITED KINGDOM
Status: offline 		Rob? Really? lol

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

Aero-creative - Vinyl Design & Application
www.aero-creative.com

Hide Signatures

(in reply to Rob Howarth)
       Post #: 2285

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 2:22 PM   
ricardinho


 

Posts: 1038
Score: 100
Joined: 1/12/2007
Last Login: 5/23/2013
From: tampa, FL, USA
Status: offline 		[:

Hide Signatures

(in reply to Duncan)
       Post #: 2286

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 4:00 PM   
Ruymán


 

Posts: 51
Score: 100
Joined: 6/1/2011
Last Login: 1/24/2013
From: S/C de Tenerife, SPAIN
Status: offline 		 Very good Aly! 

Do and those who use good Crow tour carried part of Malcolm?




Hide Signatures

(in reply to ricardinho)
       Post #: 2287

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 5:00 PM   
Dave Wilshere


 

Posts: 6271
Score: 108
Joined: 6/12/2002
Last Login: 5/23/2013
From: Watford, UNITED KINGDOM
Status: offline 		Luckily been far too busy today to get involved
Never had a thing about Ms Crow...but with a different body like that...MMMmm

In the right place, I do love CROW...just not on an UF!

D

_____________________________

Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BV

Hide Signatures

(in reply to Ruymán)
       Post #: 2288

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 7:31 PM   
ricardinho


 

Posts: 1038
Score: 100
Joined: 1/12/2007
Last Login: 5/23/2013
From: tampa, FL, USA
Status: offline 		dave i found it works great on the kingcat and boomers...never used it on anything else


Hide Signatures

(in reply to Dave Wilshere)
       Post #: 2289

RE: C-ARF Ultra Flash build Thread + Video - 12/12/2012 11:27 PM   
Dave Wilshere


 

Posts: 6271
Score: 108
Joined: 6/12/2002
Last Login: 5/23/2013
From: Watford, UNITED KINGDOM
Status: offline 		Always flew my KingCat and BobCat C without as they also have tonnes of flap. The Boomerang Nano I used to fly uses CROW, split rudders and 90 degree flap to add drag!
The Classic Flash was the biggest winner as with full flap the AB section messed up the elevator response and with less flap it was lacking drag needing glider approaches. The CROW lifted the nose and poured on the drag.

D

_____________________________

Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BV

Hide Signatures

(in reply to ricardinho)
       Post #: 2290

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 12:00 AM   
wojtek


 

Posts: 3865
Score: 110
Joined: 12/26/2001
Last Login: 5/23/2013
From: nj, NJ, USA
Status: offline 		Crow is not about adding drag as much as it is about reducing lift. If lift is reduced by a certain margin, this leaves a more positive feeling on landing, and a larger speed envelope to perform landings without (excessive) ballooning or bounce. It allows for a more consistent feel independent of wind conditions.

Its about whatever someone likes ... its all in the eye of the beholder ( or rather the stick of the pilot )


~V~

_____________________________

Nothing can ever be fast (or scale ;) ) enough !!!


www.all-scale.com

Hide Signatures

(in reply to Dave Wilshere)
       Post #: 2291

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 7:46 AM   
Dave Wilshere


 

Posts: 6271
Score: 108
Joined: 6/12/2002
Last Login: 5/23/2013
From: Watford, UNITED KINGDOM
Status: offline 		It adds drag...sure it reduces lift too, mainly in the aileron area near the tip. On a glider wing its a good thing, its used with huge angles on a wing with massive lift. On a Jet I only want drag, the UF wing loading is "nice" on landings as it is. But like everyone says, if it works for you...

Dw

_____________________________

Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BV

Hide Signatures

(in reply to wojtek)
       Post #: 2292

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 1:27 PM   
wojtek


 

Posts: 3865
Score: 110
Joined: 12/26/2001
Last Login: 5/23/2013
From: nj, NJ, USA
Status: offline 		no it doesn't !! ...


lol, j/k !!


~V~

_____________________________

Nothing can ever be fast (or scale ;) ) enough !!!


www.all-scale.com

Hide Signatures

(in reply to Dave Wilshere)
       Post #: 2293

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 1:50 PM   
Squirrelboyblue


 

Posts: 116
Score: 100
Joined: 2/13/2008
Last Login: 5/23/2013
From: Montreal , QC, CANADA
Status: offline 		I think that the experience of Dave on the UF speaks loud enough . Success is dependent on experience some chose to use and others try to defy , all because they want to prove themselves right. I will maiden my UF early next year and guess whose advise I will follow.

Happy Flying and Merry Christmas to all

Hide Signatures

(in reply to wojtek)
       Post #: 2294

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 2:03 PM   
sailing1


 

Posts: 677
Score: 100
Joined: 8/17/2004
Last Login: 5/23/2013
From: tulsa, OK, USA
Status: online 		Following or taking the advice of an expert is certainly a good place to start on pretty much anything we do in this sport. But in the end we all need to develope our own skills and levels of "comfort" with the way we fly. The use of Crow on my Classic Flash trasformed it from a good plane to a comfortable plane for me to fly. Now I am flying the Ultra Flash and it lands just fine without Crow, but I am still more comfortable flying into our short field with the use of Crow. So, is Crow better or worse? Who cares It just works better for me and my flying style.

Hide Signatures

(in reply to Squirrelboyblue)
       Post #: 2295

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 2:58 PM   
HAMMERDOWN



Posts: 171
Score: 100
Joined: 11/30/2002
Last Login: 5/18/2013
From: Dayton, NV, USA
Status: offline
I had 350+ flights on my CF with no damage. After selling it and building a UF I had about 50-50 of what i would call successful landings. I got tired of repairing the wing tips (and other things) and hung it up and flew other airplanes for almost a year. At BITW I asked for Ali to take a look at it. The only changes he made was decrease my flap throw from the factory recommended setting and added crow. I didn't do it for any reason except to get the thing back on the runway safely. Every airframe has different flight characteristics. That's the reason the FAA requires dual instruction when making a change even from a Cessna 172 to a 182. The CF and UF have different landing characteristics and for me, the instruction manual wasn't enough. I now make a level or slightly nose down approach (like a full scale and unlike the instruction manual) and flare. I was in the habit of a nose high approach because the CF liked. The UF seems to slow more quickly and, without adding the correct amount of power, would stall. The landing speed envelope was very small. The combination of the adjustments and a more level descent made this my favorite airplane again. With a proper approach, it almost lands itself. I'm sure I could now land it without crow but it works for me and I'm not going back. Thanks Ali!


Omega PowerSportsLLC.

Hide Signatures

(in reply to sailing1)
       Post #: 2296

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 7:59 PM   
Ali



Posts: 4696
Score: 135
Joined: 4/2/2002
Last Login: 5/23/2013
From: Northamptonshire , UNITED KINGDOM
Status: offline 		Happy to be of help.
Regards Al

_____________________________

Al''''s Hobbies. Airworld. BVM, Tams, Jet Cat, AMT, Skymaster, FEJ, pull over, Tomahawk, Skygate, C-ARF, Jet-Teng,Kingtech

Hide Signatures

(in reply to HAMMERDOWN)
       Post #: 2297

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 8:37 PM   
lcvmoreira


 

Posts: 6
Score: 100
Joined: 12/4/2011
Last Login: 5/22/2013
From: BELEM, BRAZIL
Status: offline 		Please, can you explain what is CROW ? How its works ?

Thanks

Luis Moreira


Hide Signatures

(in reply to Ali)
       Post #: 2298

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 10:18 PM   
paulhat


 

Posts: 70
Score: 100
Joined: 12/22/2006
Last Login: 5/16/2013
From: , AUSTRALIA
Status: offline 		Crow Braking

Hide Signatures

(in reply to lcvmoreira)
       Post #: 2299

RE: C-ARF Ultra Flash build Thread + Video - 12/13/2012 11:40 PM   
lcvmoreira


 

Posts: 6
Score: 100
Joined: 12/4/2011
Last Login: 5/22/2013
From: BELEM, BRAZIL
Status: offline 		Thanks!

Hide Signatures

(in reply to paulhat)
       Post #: 2300

Page:   <<   < prev  90 91 [92] 93 94 95 96 97 98 99   next >   >>  
All Forums >> RC Airplanes >> RC Jets >> RE: C-ARF Ultra Flash build Thread + Video
Page: <<   < prev  90 91 [92] 93 94 95 96 97 98 99   next >   >>  




Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.984RCU1