Horsetan Posted August 5, 2017 Share Posted August 5, 2017 (edited) Hi, Chris's website is now working for me which is good news. .... Looks like normal now. Edited August 5, 2017 by Horsetan Link to post Share on other sites More sharing options...
4003 Posted August 6, 2017 Share Posted August 6, 2017 (edited) Having built several crank driven locos, this is less about the quartering, but rather about the crank throw. With wheels and drive-crank being produced by different manufacturers, there will be a slight difference in radius. Bad running is the result. On the other side, if you drill the crank pin holes all in the same jig for wheels and Jack shaft, you can drive from the Jack shaft, like the real thing. Yes, looking truly forward to this one. C,-w Edited August 6, 2017 by 4003 Link to post Share on other sites More sharing options...
High Level Kits Posted August 6, 2017 Author Share Posted August 6, 2017 Having built several crank driven locos, this is less about the quartering, but rather about the crank throw. With wheels and drive-crank being produced by different manufacturers, there will be a slight difference in radius. Bad running is the result. On the other side, if you drill the crank pin holes all in the same jig for wheels and Jack shaft, you can drive from the Jack shaft, like the real thing. Yes, looking truly forward to this one. C,-w The wheels come with the crankpin holes already opened, so jig-drilling is not an option, nor is using the wheels as a jig, as the material is so much softer than the brass cranks. Particular attention has been paid to the crank throw of the flycranks and this is constantly coming out within acceptable tolerances in relation to wheel dimensions. An alternative wheel can be used from the Gibson range, which can be matched to one of their nylon flycranks, although this doesn’t look as good. Link to post Share on other sites More sharing options...
4003 Posted August 7, 2017 Share Posted August 7, 2017 Exactly, which is where the elegance of the illusion drive comes to its own. Correct size and shape of the fly crank is essential on a loco like this. 1 Link to post Share on other sites More sharing options...
High Level Kits Posted August 7, 2017 Author Share Posted August 7, 2017 More pics.... http://www.rmweb.co.uk/community/index.php?/topic/125167-fowler-dm-gwr-no-1/ 1 Link to post Share on other sites More sharing options...
vindictive Posted August 8, 2017 Share Posted August 8, 2017 Hi I've built a couple of your chassis kits for gwr locos before in EM and they are great, would you consider doing one for the Bachmann 45xx prairie or a Hornby 61xx or churchward 43xx? Regards David shackleton Link to post Share on other sites More sharing options...
High Level Kits Posted August 8, 2017 Author Share Posted August 8, 2017 Hi I've built a couple of your chassis kits for gwr locos before in EM and they are great, would you consider doing one for the Bachmann 45xx prairie or a Hornby 61xx or churchward 43xx? Regards David shackleton The 45XX is not out of the question. 4 Link to post Share on other sites More sharing options...
vindictive Posted August 8, 2017 Share Posted August 8, 2017 I've got two at home waiting in the hope you will do a chassis kit for them... Haha. I wonder if there is much difference in the bodywork between a 45xx and a 44xx, maybe you could do a conversion kit at the same time. I don't know that much about the 44xx's, only that I fancy one. Link to post Share on other sites More sharing options...
RMweb Premium Pannier Tank Posted August 8, 2017 RMweb Premium Share Posted August 8, 2017 The 45XX is not out of the question. Now that would be most welcome. From the "Mr" of (Mr & Mrs GWR fame!) Link to post Share on other sites More sharing options...
High Level Kits Posted August 8, 2017 Author Share Posted August 8, 2017 Now that would be most welcome. From the "Mr" of (Mr & Mrs GWR fame!) You make a lovely couple - I'm picturing the matching jumpers now!... 1 Link to post Share on other sites More sharing options...
RMweb Gold Captain Kernow Posted August 8, 2017 RMweb Gold Share Posted August 8, 2017 I've got two at home waiting in the hope you will do a chassis kit for them... Haha. I wonder if there is much difference in the bodywork between a 45xx and a 44xx, maybe you could do a conversion kit at the same time. I don't know that much about the 44xx's, only that I fancy one. As I understand it,, and may the experts correct me if I'm wrong, but in 'generic body' terms, I don't think there's that much difference between the body of a 44XX and that of a 45XX with the straight tanks. I do recall, though, that years ago I found myself buying a K's 44Xx kit, because either the local model shop didn't have a 45XX kit in stock, or the latter was perhaps 50p more expensive, and I couldn't afford it! 3 Link to post Share on other sites More sharing options...
RMweb Gold Captain Kernow Posted August 8, 2017 RMweb Gold Share Posted August 8, 2017 Been "around" for years in the 03 chassis. P What utterly superb running, just like the HumpShunter gearbox I'm currently fitting into my light railway J72, in fact. Link to post Share on other sites More sharing options...
RMweb Gold Captain Kernow Posted August 8, 2017 RMweb Gold Share Posted August 8, 2017 Chris - the Fowler looks exquisite. There must have been a few in industrial use as well, of course? Link to post Share on other sites More sharing options...
RMweb Gold gwrrob Posted August 8, 2017 RMweb Gold Share Posted August 8, 2017 As I understand it,, and may the experts correct me if I'm wrong, but in 'generic body' terms, I don't think there's that much difference between the body of a 44XX and that of a 45XX with the straight tanks. I do recall, though, that years ago I found myself buying a K's 44Xx kit, because either the local model shop didn't have a 45XX kit in stock, or the latter was perhaps 50p more expensive, and I couldn't afford it! The wheelbase on the chassis is different which is why Geoff at Comet never did the 44xx chassis. I have the K's model you mention CK. Link to post Share on other sites More sharing options...
RMweb Gold 81C Posted August 8, 2017 RMweb Gold Share Posted August 8, 2017 (edited) I've got two at home waiting in the hope you will do a chassis kit for them... Haha. I wonder if there is much difference in the bodywork between a 45xx and a 44xx, maybe you could do a conversion kit at the same time. I don't know that much about the 44xx's, only that I fancy one. There's not alot of difference with the Kays kits apart from the smaller wheels an buffer beams, the plate frame go in the opposite way round so the conrod knuckle is in front of the centre driver for the 44xx if my memory serves me correct. Do get a period photo as the steam pipes vary some have them some don't. Edited August 8, 2017 by 81C Link to post Share on other sites More sharing options...
Miss Prism Posted August 8, 2017 Share Posted August 8, 2017 On the 44xx, the boiler pitch is a bit lower, the cab is a bit lower, the front end is a bit shorter and the rear end a bit longer. Link to post Share on other sites More sharing options...
Adam Posted August 8, 2017 Share Posted August 8, 2017 Chris - the Fowler looks exquisite. There must have been a few in industrial use as well, of course? Oh, lots - see the thread on the Ixion 7mm model, for some examples: http://www.rmweb.co.uk/community/index.php?/topic/78328-ixion-0-gauge-fowler-diesel-loco/ https://www.flickr.com/photos/51368278@N08/15985565105/ https://www.flickr.com/photos/the-evanses/7392331078/ For example - the North Devon Clay Company had one at Peters Marland (now at Bodmin) and all the other preserved examples of this design are industrial machines. Adam https://www.flickr.com/photos/camperdown/9186869364/ Link to post Share on other sites More sharing options...
RMweb Premium Siberian Snooper Posted August 8, 2017 RMweb Premium Share Posted August 8, 2017 (edited) On the 44xx, the boiler pitch is a bit lower, the cab is a bit lower. Is that because the wheel diameter is smaller? Edited August 8, 2017 by Siberian Snooper Link to post Share on other sites More sharing options...
Miss Prism Posted August 8, 2017 Share Posted August 8, 2017 Is that because the wheel diameter is smaller? Partly. The 44 was a good hill climber, but more acceleration, and hence larger wheels, was felt desirable for the 45. Both classes have the standard 2.5" vertical offset from cylinder to wheel centre, so maybe there was a desire to use the same cylinder castings, hence the 45's running plate height was a bit higher (3" ??) compared to the 44. I think there was also a good reason for reversing the wheelbase, and the other longitudinal differences, but I can't remember now. No doubt Messrs Churchward and Holcroft reached an amicable consensus. To a lot of people, the 44 and the 45 look the same, but I think they have a different posture. Link to post Share on other sites More sharing options...
Coach bogie Posted August 8, 2017 Share Posted August 8, 2017 I've got two at home waiting in the hope you will do a chassis kit for them... Haha. I wonder if there is much difference in the bodywork between a 45xx and a 44xx, maybe you could do a conversion kit at the same time. I don't know that much about the 44xx's, only that I fancy one. K's never produced the straight tank 45XX. K's in their Banburydays, were happy to supply a 44XX kit with an extra set of 4575 sides so you could replace the smaller 44XX bunker with the larger 45XX bunker to produce a reasonable 45XX tank. I have one at home somewhere, an abandoned project when the Churchward Models kit came out. Mike Wiltshire Link to post Share on other sites More sharing options...
vindictive Posted August 9, 2017 Share Posted August 9, 2017 That's fair enough, like island I didn't know what the differences where but it all makes sense. Thanks for the info. David shackleton Link to post Share on other sites More sharing options...
High Level Kits Posted August 9, 2017 Author Share Posted August 9, 2017 94XX in the model press. More details here: http://www.rmweb.co.uk/community/index.php?/topic/125216-high-level-94xx-hits-the-bigtime/ Link to post Share on other sites More sharing options...
5050 Posted August 9, 2017 Share Posted August 9, 2017 The front wheel crankpin sits right behind the conn rod, so the crankpin nut would have to be paper thin. On the model, the Jackshaft is gear-driven, and this drives the rear wheels; the front wheels are also driven by gears, with no crankpin, so they aren't connected to the rods at all... that's the illusion bit! Very clever Chris, I was wondering about this. I hope you will have plenty on offer at S4UM. I might have to add one to the stock pile - which I have manfully been trying to reduce of late without success. I used a version of 'Illusodrive' on my Impetus Fowler build. Works great. 1 Link to post Share on other sites More sharing options...
RMweb Premium Michael Edge Posted August 9, 2017 RMweb Premium Share Posted August 9, 2017 The wheelbase on the chassis is different which is why Geoff at Comet never did the 44xx chassis. I have the K's model you mention CK. The coupled wheelbase is actually the same but the other way round, years ago I converted some Korean brass 45xx to 44xx by turning the frames round. 2 Link to post Share on other sites More sharing options...
Coach bogie Posted August 12, 2017 Share Posted August 12, 2017 That's fair enough, like island I didn't know what the differences where but it all makes sense. Thanks for the info. David shackleton Found the half finished project. This is the K's 44XX with a 4575 bunker. The original 44XX is included for comparison. I can only produce a first batch 45XX as the later ones had curved front ends and that would need the 4575 running plate. My 14 year old wants to finish it off.....I have created a monster!!! Mike Wiltshire 1 Link to post Share on other sites More sharing options...
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