Hi Ian, Thanks for the offer to organise a draftsman. A couple of questions about the sprung tailwheel... - How often do you get flat tailwheel tyres? We get them a fair bit and I think it's due to a fair bit of weight on the rigid tailwheel. - Do you get much "bunny hopping" on uneven ground with a sprung tailwheel? cheers Rob
PO Box 129, Lawson, NSW, 2783. mobile 0429 493828 ............................................. ________________________________ From: Ian Mc Phee <[email protected]> To: [email protected] Sent: Fri, 19 February, 2010 2:42:03 PM Subject: Re: [DOG mailing list] H36 owners with sprung tailwheels Got a guy who is in drafting in anything engineering (usually does high rise windows!!!!) so will get him to have a look when here next - Also Nigel should be here in the next few weeks. My aircraft welder Rowan must have forgotten to call in when driving past -he could look and give a round figure price. Another alternative I have always thought of is instead of 250-4 tire is change to the bigger tyre (will look up size) as used on some C185s - I saw this used on every Pawnee in Sweden but never seen it on a Pawnee in AUS. Possibly a simpler mod but it may effect shimmy- Yes it would be a bit heavier but not much and from memory most Dimonas would benefit from bit more tail weight Guess it would need EO also but I always know bigger bag tyres smooth up ride (going from 800-6 in pawnee to 850-6 is leap forward as was going from 500-5 to 380-150 in 2 wheel falke. Ian mcphee On 19 February 2010 11:36, Rob Thompson <[email protected]> wrote: Do you have a H36 Dimona with a sprung tailwheel and wouldn't mind me sending around a local draftsman to draw up some plans? If so please let me know... >>I wouldn't require the tailwheel to be removed - we will draw up the shaft >>plans from our H36. >Thanks in advance! >Rob Thompson > >[email protected] >>PO Box 129, >Lawson, NSW, 2783. >phone 02 47592307 >mobile 0429 493828 > > > > > > > > > > > > > > > > > > > > > > > > > > >............................................. > > > > > ________________________________ From: Laurie Hoffman <[email protected]> >To: [email protected] >Sent: Mon, 1 February, 2010 9:04:20 PM >Subject: Re: [DOG mailing list] H36 spung tailwheel > > >Firstly you raise the tail off the ground and then after you have spung the >wheel around and around of course Nige! Then you can say that it has been >spung. > >Regards >Laurie Hoffman >46531233 > > > > > ________________________________ From: Nigel Baker <[email protected]> >To: [email protected] >Sent: Mon, 1 February, 2010 6:57:29 PM >Subject: Re: [DOG mailing list] H36 spung tailwheel > > > > > >I'm interested in what this Spung Tailwheel is. >I know what a Sprung wheel is but what is it when it is "Spung" :) >----- Original Message ----- >>From: Rob Thompson >>To: [email protected] >>Sent: Thursday, January 28, 2010 10:33 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]> >> >>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. > >> > > ________________________________ >Yahoo!7: Catch-up on your favourite Channel 7 TV shows easily, legally, and >for free at PLUS7. Check it out. > >> > > >
