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air.guerner(at)orange.fr
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 Posted: Tue Jul 27, 2010 6:53 am Post subject: Monowheel landing gear dampers |
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Hi all,
I have been following the thread on the monowheel landing gear strut
(Mod 51) with great interest and I am planning to perform a full check
and refurbishment of the landing gear this winter. I need to replace
the rubber block as the airplane is now sitting significantly lower
than before. A the same time I would love to save some weight with
getting rid of the hydraulic dampers. I noticed that among aircraft
using rubber blocks such as Lancairs, Jodels, Mooneys, none is using
hydraulic dampers, so I am questioning the usefulness of the dampers
on the Europa.
Has anyone experienced flying the Monowheel without the dampers ?
Regards
Remi Guerner
F-PGKL
XS Monowheel, 780 hours
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budyerly(at)msn.com
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| Posted: Tue Jul 27, 2010 7:35 am Post subject: Monowheel landing gear dampers |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> It bounces like a bunny on rough strips.
Leave them on.
Bud
[quote] ---
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hurstkr(at)redzone.com.au
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| Posted: Wed Jul 28, 2010 1:43 am Post subject: Monowheel landing gear dampers |
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| Quote: | Has anyone experienced flying the Monowheel without the dampers ?
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Well I certainly haven't Guerner but if I may just add a little to Bud's
comment . . . . .
The original Europa had no rubber suspension relying on the balloon tyre to
dampen the bumps.
Europa found this was not good enough so introduced the rubber block but
found it to have too much rebound.
They then inroduced the hydraulic dampers to arrest the rebound and were
finally satisfied they had it right.
This is my recollection of the progression so if you dispense with the
dampers, you will be reverse engineering so to speak what has been done
before.
Cheers
Kingsley in Oz.
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grahamsingleton(at)btinte
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| Posted: Wed Jul 28, 2010 4:40 am Post subject: Monowheel landing gear dampers |
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Kingsley
your recollection is pretty well correct but there was an additional complication, the XS tailwheel was introduced shortly afterwards, (I'm pretty sure.) With the original Mustang/P51 tailwheel bounces were much more of a problem. You might get away without dampers on the XS, they tend to wear out quite soon anyway.
btw Guerner is Remi's surname 
Graham
From: Kingsley Hurst <hurstkr(at)redzone.com.au>
To: europa-list(at)matronics.com
Sent: Wednesday, 28 July, 2010 10:42:01
Subject: Re: Monowheel landing gear dampers
--> Europa-List message posted by: "Kingsley Hurst" <hurstkr(at)redzone.com.au (hurstkr(at)redzone.com.au)>
| Quote: | Has anyone experienced flying the Monowheel without the dampers ?
|
Well I certainly haven't Guerner but if I may just add a little to Bud's comment . . . . .
The original Europa had no rubber suspension relying on the balloon tyre to dampen the bumps.
Europa found this was not good enough so introduced the rubber block but found it to have too much rebound.
They then inroduced the hydraulic dampers to arrest the rebound and were finally satisfied they had it right.
This is my recollection of the progression so if you dispense with the dampers, you will be reverse engineering so to speak="http://www.matronics.com/Navigator?Europa-List" target="_blank">http:ics.com" = -->
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hurstkr(at)redzone.com.au
Guest
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| Posted: Wed Jul 28, 2010 1:33 pm Post subject: Monowheel landing gear dampers |
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Yes Graham, the XS tailwheel DID come a little while afterwards. I hadn't considered that at all and I suspect you are quite right. Only one way to find out I guess.
> btw Guerner is Remi's surname
Thank you for pointing that out . . . . how embarrassing . . . . I have seen Remi's name enough times now to know . . . . . I'm not all that far behind you in age so I'm sure at least YOU will understand.
BTW, if you come over this time next year, you can sleep in OUR new house.
Cheers and regards to Joan please.
Kingsley
Do not archive
From: GRAHAM SINGLETON (grahamsingleton(at)btinternet.com)
| Quote: | To: europa-list(at)matronics.com (europa-list(at)matronics.com)
Sent: Wednesday, July 28, 2010 10:38 PM
Subject: Re: Monowheel landing gear dampers
Kingsley
your recollection is pretty well correct but there was an additional complication, the XS tailwheel was introduced shortly afterwards, (I'm pretty sure.) With the original Mustang/P51 tailwheel bounces were much more of a problem. You might get away without dampers on the XS, they tend to wear out quite soon anyway.
btw Guerner is Remi's surname
Graham
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[quote][b]
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hurstkr(at)redzone.com.au
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air.guerner(at)orange.fr
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| Posted: Sat Jul 31, 2010 3:21 am Post subject: Monowheel landing gear dampers |
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Thank you Bud, Kingsley and Graham for your responses.It is always interesting to know more about the history of the design.
Regards
Remi
Time: 02:43:44 AM PST US
From: "Kingsley Hurst" <hurstkr(at)redzone.com.au (hurstkr(at)redzone.com.au)>
Subject: Re: Monowheel landing gear dampers
| Quote: | Has anyone experienced flying the Monowheel without the dampers ?
|
Well I certainly haven't Guerner but if I may just add a little to Bud's
comment . . . . .
The original Europa had no rubber suspension relying on the balloon tyre to
dampen the bumps.
Europa found this was not good enough so introduced the rubber block but
found it to have too much rebound.
They then inroduced the hydraulic dampers to arrest the rebound and were
finally satisfied they had it right.
This is my recollection of the progression so if you dispense with the
dampers, you will be reverse engineering so to speak what has been done
before.
Cheers
Kingsley in Oz.
[quote][b]
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