Hi Lasse,
Regarding folding wings - you need to make or buy wing cradles with
wheels that take the weight of the wings all through the process of removing
the wing. The cradle needs to have a hinge point so you can rotate the wing
whilst still holding the weight. They also need to incorporate some sort of
wind up mechanism so they can take the weight before removing the main pin.
They need to be located near the balance point of the wing so that the tip is
slightly heavy.
I've seen a video of the process some where ....not sure where - maybe
youtube.
The early model dimonas feel quite stange on the ailerons at first but you
get used to them quickly
Rob Thompson
PO Box 129,
Lawson, NSW, 2783.
phone 02 47592307
fax 02 47050312
mobile 0429 493828
.............................................
________________________________
From: Lasse Schmidt <[email protected]>
To: "[email protected]" <[email protected]>
Sent: Fri, 29 January, 2010 8:31:34 AM
Subject: [DOG mailing list] H36 spung tailwheel
I forgot the link, sorry about that.
http://cgi.ebay.com.sg/Hoffmann-H-36-Dimona-Wood-Desktop-Airplane-Model_W0QQitemZ380121990970QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item588109473a
Lasse Schmidt
+46 (0)70-28 32 660
Upplevelseakuten AB
Tullhus 1, Skeppsbron
111 30 Stockholm
www.upplevelsepresent.se
________________________________________
Från: Lasse Schmidt [[email protected]]
Skickat: den 28 januari 2010 22:30
Till: [email protected]
Ämne: [DOG mailing list] H36 spung tailwheel
Hi guys!
This group is really fantastic. Thanks for all the tips and ideas.
While checking all the service bulletins I discovered that the individual i am
planning to buy was exepted (serial 36117) from bulletin No. 22 (the one about
the horizontal stabilizer safety mounting). It would be interesting to know why
:).
Does any of you fold the wings after each flight? How long does it take to fold
the wings, can it be made by one man or is two persons needed?
Interesting about the tailwheels, I think I have to get my bird home to start
with before starting on all the mods.
By the way, found this H36 model on ebay - someone is really bad at photoshop...
Cheers
Lasse Schmidt
+46 (0)70-28 32 660
Upplevelseakuten AB
Tullhus 1, Skeppsbron
111 30 Stockholm
www.upplevelsepresent.se
________________________________________
Från: Rob Thompson [[email protected]]
Skickat: den 28 januari 2010 22:15
Till: [email protected]
Ämne: Re: [DOG mailing list] H36 spung tailwheel
What about we pay someone from nearby to Bacchus with drafting skills to draw
plans (including shop drawings) from Dave Goldsmith's sprung tailwheel? The
plans for the spindle part that fits into the fuselage can be done from any
Dimona at annual inspection time so we won't have to pull Dave's apart.
Then get the steel parts cut from appropriate grade metal, pay someone to do
any necessary machining and get the lot welded by an aviation welder. Maybe we
would have to make some sort of a jig to send the bits to the welder in..maybe
not.
From the experience Nigel and I had refurbishing the 3 dimonas and the way
Hoffman sourced components I reckon it's a good bet that the rubber blocks are
an off the shelf part.
cheers
Rob Thompson
PO Box 129,
Lawson, NSW, 2783.
mobile 0429 493828
.............................................
________________________________
From: STO Airworthiness <[email protected]>
To: [email protected]
Sent: Thu, 28 January, 2010 1:50:52 PM
Subject: RE: [DOG mailing list] H36 spung tailwheel
Hi All,
I would be interested in fitting the sprung unit. Probably will add a good
kilo or so, which will equate to a min pilot weight increase of about 7 kgs.
Dave Goldsmith's H-36 MkII VH-GFG also has the sprung tailwheel. It lives
between Bacchus Marsh & Bendigo.
From a GFA airworthiness point of view, exchange of the rigid wheel for the
sprung one would not constitute a mod if the factory parts are used, but should
we decide to build them locally a mod would be required for each aircraft to
which the new assembly is fitted. This is easily achieved; we have done it
before with oil filter installations.
Regards
JGV
Senior Technical Officer, Airworthiness
GLIDING FEDERATION of AUSTRALIA INC.
[email protected]
----------------------------------------------------------------------
The Gliding Federation of Australia Inc
invites you to visit the web site www.gfa.org.au newcomers to gliding and
soaring are invited to visit www.soaring.org.au
-------------------------------------------------------------------------------------------------------------------
This email transmission may contain confidential or privileged information
that is intended only for the individual or entity named in the email address.
If you are not the intended recipient, please be aware that any disclosure,
copying, distribution or reliance upon the contents of this email is strictly
prohibited
________________________________
From: John C [mailto:[email protected]]
Sent: Thursday, 28 January 2010 12:00 PM
To: [email protected]
Subject: Re: [DOG mailing list] H36 spung tailwheel
The only H36 with a sprung tailwheel that I know of in Australia is GJD owned
by John Mason.
The sprining consists of two rubber blocks which take the bumps out of the tail
compared to the non sprung version. It does raise the tail slightly.
There is a drawing on page 4.10 in the H36 parts catalogue.
I did replace the top section on GJD when I imported it as there was a very
slight bend in the vertical spindle and this caused tailwheel shimmy. The
faulty part is still in the workshop.
There's no place like cloudbase.
John Callahan.
----- Original Message -----
From: John Mason<mailto:[email protected]>
To: [email protected]<mailto:[email protected]>
Sent: Thursday, January 28, 2010 11:09 AM
Subject: Re: [DOG mailing list] H36 spung tailwheel
I'd certainly be interested in that...
John Mason - GJD
----- Original Message -----
From: Rob Thompson<mailto:[email protected]>
To: [email protected]<mailto:[email protected]>
Sent: Thursday, January 28, 2010 11:03 AM
Subject: [DOG mailing list] H36 spung tailwheel
I'm keen on the idea of getting a sprung tailwheel on our H36 - the rigid one
is not at all good on rough surfaces.
I think the sprung wheels may also reduce the "bunny hopping" on rough
runways....can anyone enlighten me as to whether this is the case or not?
Last time I saw a sprung one I didn't think it would be particularly difficult
or costly to manufacture - perhaps we could get some plans drafted from one of
the dimonas with a sprung wheel and see about getting a few made up with
appropriate approvals.
How many of you would be interested?
cheers
Rob
PO Box 129,
Lawson, NSW, 2783.
mobile
.............................................
________________________________
From: Ian Mc Phee <[email protected]>
To: [email protected]
Sent: Wed, 27 January, 2010 11:39:22 PM
Subject: Re: [DOG mailing list] Dimona 1984
Interesting about tail wheel mod from Michael - sure gives smoother ride.
You mention the heads/valves lasting only 300hrs. I would recommend to all
analysis of exhaust at FULL POWER with lamdameter etc. You may find it is
running slightly lean on full power (actually plugs look OK) but gas analysis
does not lie. More recently i have been using digital CHT and you can really
see what is happening. I set them up so full power CHT rises to about 170degC
then very slowly falls. If you bring throttle back just a bit in revs CHT will
quickly rise to 180degC and beyond. This proves to me you are running rich on
full power- also confirmed on EGT. To achieve this it may be necessary to
carefully thin out the end 6mm to 8mm of each the needle in carby and thus
achieve the low CHT on full power. (do not think of touching jet) Fuel is
cheap when compared to repairing heads. Limbach Tech bull 53 makes mention of
max on climb of 180degC (forget what max the manual says - that is stupid
value) Also Tech bull 44 (11page edition) is
well worth a read.
Ian mcPhee
2010/1/27 Michael Grimwood
<[email protected]<mailto:[email protected]>>
Hi John and Lasse
I have owned a Mk1 H36 since 1988 (G-MRG in the UK, now VH-VRG in Australia).
It originally came with an un-sprung
________________________________
Yahoo!7: Catch-up on your favourite Channel 7 TV shows easily, legally, and for
free at PLUS7. Check it
out<http://au.rd.yahoo.com/tv/catchup/tagline/*http://au.tv.yahoo.com/plus7/?cmp=mailtag>.
________________________________
Yahoo!7: Catch-up on your favourite Channel 7 TV shows easily, legally, and for
free at PLUS7. Check it
out<http://au.rd.yahoo.com/tv/catchup/tagline/*http://au.tv.yahoo.com/plus7/?cmp=mailtag>.
---------------------------------------------------------------------
You are subscribed to the Dimona Owners Group mailing list.
To unsubscribe, send email to: [email protected]
---------------------------------------------------------------------
You are subscribed to the Dimona Owners Group mailing list.
To unsubscribe, send email to: [email protected]
__________________________________________________________________________________
Yahoo!7: Catch-up on your favourite Channel 7 TV shows easily, legally, and for
free at PLUS7. www.tv.yahoo.com.au/plus7
