We have had a reasonable run of late - I have been using a rounder walled cheapie 250-4 rather than the more common square one. It seems to be better on tar and so far no shimmy. We have no trouble at tyagarah (grass) but Amberley has been a problem in past.
No bunny hopping at all The drafting guy did not turn up but was rain on Gold Coast this morning Ian M On 20 February 2010 08:11, Rob Thompson <[email protected]> wrote: > 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 <[email protected]> >> *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<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> >> . >> >> >> > > > >
