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Kevin Bonds
Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn
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 Posted: Fri Jul 28, 2006 10:56 am Post subject: Coomposite Gear |
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I can’t make up my mind about what gear to use on my XL. I began fabrication the necessary parts for the Composite gear from AS tonight, but began to worry about the longevity of a Composite structure for landing gear. I don’t want to have to worry about the gear beginning to crack in the future. I don’t know if I’ll be able to find a replacement 10-15 years from now. The pluses are 1) it would save a ton of weight. 2) it would save a ton of weight. The minuses are 1) increase in complexity 2) more time 3) slightly more expensive 4) wont be easily converted back to standard gear if needed 5) How long will it last? I would benefit from some discussion on the topic. Does anyone have anything to add?
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
do not archive DO NOT ARCHIVE
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KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds |
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randy(at)shadycreekoutlaw
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| Posted: Fri Jul 28, 2006 11:49 am Post subject: Coomposite Gear |
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Hi Kevin,
You are right about the weight... The current weight of the XL gear is rediculous at over 40 lbs... BUT, nevertheless, I'm building my own main gear as well... I have a 12' X 3/4" X 8" piece of 6061-T6 now to make it from... It's still under my table and I've not started on it... I have a friend who has a 150 ton press that should make small work of the cold bends on the gear...
Am I right in assuming the composite gear from AS weighs 2.45Kg, which is about 5.5lbs??? If so, I may be thinking of going the same route as you... This is one heck of a way to save weight...
Thanks,
Randy
XL - Wings - Plans Only
http://www.n344rb.com
Do Not Archive
[quote] ---
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NYTerminat(at)aol.com
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| Posted: Fri Jul 28, 2006 12:05 pm Post subject: Coomposite Gear |
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Kevin
I am thinking about ordering the composite gear for my CH-701
Bob Spudis
a message dated 7/28/2006 3:52:11 P.M. Eastern Daylight Time, randy(at)shadycreekoutlaws.com writes:
[quote] Hi Kevin,
You are right about the weight... The current weight of the XL gear is rediculous at over 40 lbs... BUT, nevertheless, I'm building my own main gear as well... I have a 12' X 3/4" X 8" piece of 6061-T6 now to make it from... It's still under my table and I've not started on it... I have a friend who has a 150 ton press that should make small work of the cold bends on the gear...
Am I right in assuming the composite gear from AS weighs 2.45Kg, which is about 5.5lbs??? If so, I may be thinking of going the same route as you... This is one heck of a way to save weight...
Thanks,
Randy
XL - Wings - Plans Only
http://www.n344rb.com
Do Not Archive
[quote] ---
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Ron Lendon
Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI
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| Posted: Fri Jul 28, 2006 6:55 pm Post subject: Re: Coomposite Gear |
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Kevin,
Not sure if it's the same material, but GM and other auto mfgs. have been using composites for leaf springs for quite some time now. Not real sure how long but I bet they have some data. Many of the commercial vehicles must run 250k miles with out major suspension problems.
FWIW
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Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
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Kevin Bonds
Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn
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| Posted: Fri Jul 28, 2006 7:49 pm Post subject: Coomposite Gear |
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Randy wrote:
< Am I right in assuming the composite gear from AS weighs 2.45Kg, which is about 5.5lbs??? If so, I may be thinking of going the same route as you... This is one <heck of a way to save weight...
That’s my understanding. Of course there will be a couple of pounds worth of stiffening that will need to be done. The Center channel needs to be made of .040 instead of .032 and slightly different dimensions as well as some stiffeners under the armrest area etc.
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
do not archive DO NOT ARCHIVE
Am I right in assuming the composite gear from AS weighs 2.45Kg, which is about 5.5lbs??? If so, I may be thinking of going the same route as you... This is one heck of a way to save weight...
Thanks,
Randy
XL - Wings - Plans Only
http://www.n344rb.com
Do Not Archive
[quote]
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http://www.matronics.com/Navigator?Zenith-List |
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_________________
KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds |
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David X
Joined: 10 Jan 2006
Posts: 154
Location: Princeton, NJ, USA
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| Posted: Fri Jul 28, 2006 8:04 pm Post subject: Re: Coomposite Gear |
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So there is some sort of retrofit required - i.e. not a straight replacement for gear on an existing 601?
| Kevin Bonds wrote: | | That’s my understanding. Of course there will be a couple of pounds worth of stiffening that will need to be done. The Center channel needs to be made of .040 instead of .032 and slightly different dimensions as well as some stiffeners under the armrest area etc. |
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Zodiac 601 XL - CZAW Built - Rotax 912S
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TxDave
Joined: 22 Jul 2006
Posts: 168
Location: Temple, TX
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| Posted: Fri Jul 28, 2006 9:01 pm Post subject: Re: Coomposite Gear |
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Kevin,
There was a post on June 2nd by a plans builder from the UK named Malcom Hunt. He says the composite gear are required there. Maybe he can address your concerns.
Dave Clay
Temple, TX
601XL scratch builder
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David X
Joined: 10 Jan 2006
Posts: 154
Location: Princeton, NJ, USA
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| Posted: Fri Jul 28, 2006 9:43 pm Post subject: Re: Coomposite Gear |
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Thanx. Yes - retrofit required.
| TxDave wrote: | | There was a post on June 2nd by a plans builder from the UK named Malcom Hunt. He says the composite gear are required there. Maybe he can address your concerns. |
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Zodiac 601 XL - CZAW Built - Rotax 912S
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