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taffy0687(at)yahoo.com
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 Posted: Sun Apr 22, 2007 11:27 am Post subject: XL main Spring gear placement/ REVERSEAL |
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Tony--- wouldn't it be "relatively easy" to reverse your gear ? If it is 6061 T 6 ?
1) remove gear, 2) weld notches closed, 3) REVERSE GEAR and make new notches, 4) reinstall gear, 5) extend brake lines (if needed).
Fritz
"T. Graziano" <tonyplane(at)bellsouth.net> wrote:
[quote] I agree. One of the things I wish I had know about was the gear reversal, before I installed my gear.
I have this caution in my POH. Found this out in flight test when I set it up for a high speed (about 65 kt) landing with full flaps and rotated nose high but did not stop sink rate. Not a problem landing slow with full flaps or low or"high" speed with no flaps with sink rate arrested, but more forgiving at high speed with no flaps.
CAUTION<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
WATCH SINK RATE AND AIR SPEED: with the landing gear geometry of 493TG, a High sink rate combined with High air speed at touch down will result in the nose gear hitting the runway HARD… and bouncing the airplane airborne in a nose high attitude. IF THIS HAPPENS – GO AROUND or initiate a BOUNCE RECOVERY! Pilot Induced Oscillation (PIO) can result under this condition if landing is attempted.
Tony Graziano
601XL/Jab3300; N493TG 234 hrs.
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Subject: Re: XL main Spring gear placement From: Bryan Martin (bryanmmartin(at)comcast.net ([email]bryanmmartin(at)comcast.net?subject=Re:%20XL%20main%20Spring%20gear%20placement&replyto=7C6CF49B-80E6-4C1A-A2D7-0F9DDCDDEDE6(at)comcast.net[/email])) Date: [b]Sun Apr 22 - 5:55 AM[/b] [quote][b][quote]I believe the original plans called for the flat side to the rear. With a heavier engine, this puts the main wheels far enough behind the normal CG that it's a little bit hard to lift the nosewheel for takeoff or hold it off during landing. With my Subaru, for example, I have to apply a lot of back pressure to rotate and as soon as the mains leave the ground, the plane wants to pitch up so I have to be prepared to release the back pressure right away. On landing, the reverse applies, the nose wants to drop rapidly as soon as the mains touch down. It's not a big problem but it's something to get used to. I think the newer plans call for the flat side forward and I've seen that the LSAs being built at AMD have the gear this way. The photo guide probably reflects the older plans. I've done some calculations and I figure that putting the flat side forward would move the mains about four inches forward. With my airplane that would still put the mains far enough back that I could climb in and out without tilting the plane back on its tail, even with the plane loaded for gross weight and maximum aft CG. Two people might not be able to climb in at the same time though. It really wouldn't be a big deal to turn it around the other way, just pull off the mains, flip the spring around, re-mount the mains and then re-attach the brake lines the the spring. I've though about turning my Ahhh...imagining that irresistible "new car" smell?
Check out [url=http://us.rd.yahoo.com/evt=48245/*http://autos.yahoo.com/new_cars.html;_ylc=X3oDMTE1YW1jcXJ2BF9TAzk3MTA3MDc2BHNlYwNtYWlsdGFncwRzbGsDbmV3LWNhcnM-]new cars at Yahoo! Autos.[/url] [quote][b]
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John Bolding
Joined: 23 May 2006
Posts: 281
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| Posted: Sun Apr 22, 2007 11:52 am Post subject: XL main Spring gear placement/ REVERSEAL |
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Oops, don't think you need to be welding on a heat treated piece of 6061 unless you plan on having it heat treated back to the T651 condition. John
[quote] ---
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tonyplane(at)bellsouth.ne
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| Posted: Sun Apr 22, 2007 5:41 pm Post subject: XL main Spring gear placement/ REVERSEAL |
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Fritz,
Actually all I would have to do is do is "dolly" the airplane after jacking it up, remove the brake line fairings, disconnect the brake lines, remove the gear channel and reverse it. Reinstall the brake lines and purge out the air, and fab new brake line fairings. I probably would have to replace the brake lines with longer ones though.
I have considered doing it, but --- Having more fun flying.
Tony
Re: Re: XL main Spring gear placement/ REVERSEAL From: Big Gee (taffy0687(at)yahoo.com ([email]taffy0687(at)yahoo.com?subject=Re:%20Re:%20XL%20main%20Spring%20gear%20placement/%20REVERSEAL&replyto=46561.99826.qm(at)web56115.mail.re3.yahoo.com[/email])) Date: [b]Sun Apr 22 - 12:27 PM[/b] [quote] | Quote: | Tony--- wouldn't it be "relatively easy" to reverse your gear ? If it is 6061 T
6 ?
1) remove gear, 2) weld notches closed, 3) REVERSE GEAR and make new notches,
4) reinstall gear, 5) extend brake lines (if needed).
Fritz
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[b]
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601zv(at)ritternet.com
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| Posted: Sun Apr 22, 2007 6:41 pm Post subject: XL main Spring gear placement/ REVERSEAL |
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Am I the only one to whom removing and/or reversing the gear channel while ignoring the fitting problem of the notches makes no sense in this seeming over-simplification of gear reversal?
[quote] ---
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Afterfxllc(at)aol.com
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| Posted: Sun Apr 22, 2007 7:42 pm Post subject: XL main Spring gear placement/ REVERSEAL |
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I can see it now ... your getting ready to leave for osh gosh and youv'e just finished your gear reversal and you throw all your stuf in the baggage compartment and then wham your tail hits the ground. And there you are thinking all I need now is a tail wheel.
Do not archive
| Quote: | Am I the only one to whom removing and/or reversing the gear channel while ignoring the fitting problem of the notches makes no sense in this seeming over-simplification of gear reversal?
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See what's free at AOL.com.
[quote][b]
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