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Yellow A4 - 3/30/2002 12:24:47 AM   
noahb



Posts: 551
Joined: 1/19/2002
From: Carlsbad, NM, USA
Status: offline 		Hey, what can you guys tell me about this jet, like how it flys and lands. I just picked up a kit and will be installing a os91 with ramtec fan. Let me know...
Larry
       Post #: 1

Yellow A4 - 3/30/2002 2:59:38 AM   
NCC-1701



Posts: 204
Joined: 3/9/2002
From: Niceville, FL, USA
Status: offline 		A friend of mine is flying one. From his experience, I highly recommend building the version with the sport wing. The thicker airforl and larger wing area make it much less susceptible to tip stalls on final. Much more pleasant to fly than the scale wing.

(in reply to noahb)
       Post #: 2

Yellow A-4 - 3/30/2002 3:01:27 AM   
rednmc165


 

Posts: 32
Joined: 1/22/2002
From: Albuquerque, NM, USA
Status: offline 		The newer kit with the fan further forward is great. The benifits are two fold, it allows for saddle tanks closer to the C.G. verses the tanks behind the cockpit. Secondly, the fan is more efficient when placed closer to the inlet opening. Whether it's the sport or scale wing, I'd install the split flaps. This minor modification is well worth the effort and you'll enjoy the results on landing (speed and stability). I have the old version A-4 with the O.S .91 Dynamax, JMP pipe package, split flaps, and spring air retracts and it's a blast to fly. When I moved back to Albuquerque New Mexico I once again pay close attention to warm days with density altitude approaching 8000 on warm days. Needles to say June through September I don't fly it much if at all because of the reduction of thrust. I imagine if I were to do it again I'd install the RAMTEC for the added thrust. Enjoy the kit and watch for the wing waggle in flight, it's talking to you saying you pull much more on the stick and it'll be snapping.

Take Care,
Norm

(in reply to noahb)
       Post #: 3

A4 - 3/30/2002 3:15:33 AM   
noahb



Posts: 551
Joined: 1/19/2002
From: Carlsbad, NM, USA
Status: offline 		Yeah, I live down in Carlsbad, New Mexico. I bought this kit off a guy. It is already glassed. I guess I could install the split flaps on it. It is the older kit design. What do I need to watch out for when flying this jet and how does it handle both high speed and low. How should I approach the landing on this jet.

(in reply to noahb)
       Post #: 4

Y/A A-4 in flight - 3/30/2002 5:58:58 AM   
rednmc165


 

Posts: 32
Joined: 1/22/2002
From: Albuquerque, NM, USA
Status: offline 		High speed, no big issues except pay attention to the wing waggle, especially if it's the scale winded version. My flying partner has had several scale winged version and pulling to hard and not paying attention to the waggle will cost you a rebuild. As for the landing, set up is the key. Once you enter downwind, drop the gear and about 30%- 40% flaps and of course add the power to keep the slow speed going. As you enter base to final add some power in the turn, roll out and establish the decent. Manage power as required to get down to 4-5 feet then transition with minimal power to flare attitude at about 2-3 feet and the rest is roll-on. Don't get too crazy with the stearing or you'll be working on wing tips.

Norm

(in reply to noahb)
       Post #: 5

A4 Flight - 3/30/2002 9:18:57 AM   
gadjetman


 

Posts: 26
Joined: 2/11/2002
From: Richmond, VA, USA
Status: offline 		Have an A4 with the sport wing and Dynamax fan/JMP II pipe system. Ground Handling...the A4 tends to want to wheelbarrow down
the runway...if trimmed a slight amount of UP it will infact fly itself off the runway...if not then it will wheelbarrow until you rotate. If
you try to fly to slow or get the nose attitude very high just after lift off then you will stall the wing...and since it is a Delta wing it will
stall from the rear outboard section inward and foward...the result is a very noticable pitch up to about 60 degrees or more and no
elevator effectiveness...ie. CRASH if you are not very lucky. The A4 slows down nicely once the gear is down and you should have a
nice nose high landing attitude carrying some power to control the descent rate. I have brakes on mine and they work nice ...but
once again if applied to much to fast, the aircraft will wheelbarrow...I would put some nylon wing skids (carl goldberg) on each wing
tip to protect the fiberglass from rubbing on the runway. The weak link in the gear is the nose strut...the piano wire that connects the
Robostrut to the retract will bend on just the slightest pressure...be careful. Wow the crowd with a low pass and ROLL...the roll rate is
uncontionable...
Have Fun!

Scott

(in reply to noahb)
       Post #: 6

Yellow A-4 - 4/5/2002 1:04:56 PM   
YellowAircraft



Posts: 3157
Joined: 1/5/2002
From: San Diego, CA, USA
Status: offline 		Good posts, guys!

_____________________________

Yellow Aircraft, JetCat Engines, Skymaster ARF+ and Turn Key Jets
www.cyctheatre.com

(in reply to noahb)
       Post #: 7

Yellow A4 - 4/6/2002 1:00:30 AM   
SDCrashmaster



Posts: 3337
Joined: 1/15/2002
From: San Diego, CA, USA
Status: offline 		Shaun,
You wouldn't know a good post if it bit you in the tailpipe.
__________________________
Larr...eeerrrr, Jobooo the clown.

(Just trying to beat him too the punch)
You know he's about ready to slam you cause it's a Yellow A-4 thread.
Or as Lar...I mean, Joboo would say, "a JHH cloned A-4 thread".
Sheyeah, right.
Are you back from your jaunt overseas?
Yer bud,
Crash

_____________________________

Yeah, I use mixing... Balsa & Dirt. ©

(in reply to noahb)
       Post #: 8

Yellow A4 - 4/7/2002 1:05:33 AM   
EngrJoboo


 

Posts: 7
Joined: 2/15/2002
Status: offline 		Actually SD, you took a good thread and made it bad. Interesting who you are insinuating, but unfortunately, you're wrong. I admit, originally, I took the comments too far. I don't think you should insinuate someone who isn't even involved in this however.

(in reply to noahb)
       Post #: 9

Yellow A4 - 4/8/2002 2:05:17 AM   
YellowAircraft



Posts: 3157
Joined: 1/5/2002
From: San Diego, CA, USA
Status: offline 		JoBoo,


Whomever you are (you have, after all, been asked by a few), lighten up a little. SD is a very cool guy, and he´s poking fun. Relax.

_____________________________

Yellow Aircraft, JetCat Engines, Skymaster ARF+ and Turn Key Jets
www.cyctheatre.com

(in reply to noahb)
       Post #: 10

Yellow A4 - 4/9/2002 11:22:00 AM   
SDCrashmaster



Posts: 3337
Joined: 1/15/2002
From: San Diego, CA, USA
Status: offline 		Joboohoo
I see your still cloaked. How 'bout at least putting your location or anything about yourself in here. Whatcha hidin' from? You have ruined many a thread yourself...but oddly, only those involving Shaun. Why? Until you explain, you remain, just a clown.

_____________________________

Yeah, I use mixing... Balsa & Dirt. ©

(in reply to noahb)
       Post #: 11

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