NSE DAZ Posted January 29, 2011 Share Posted January 29, 2011 Hi all, I am after some advice with regards to the Hornby class 73, all my track work is code 75 concrete sleeper the trouble I am having with my new class 73 is that the wheel flange keep grounding out on the sleepers is this because they are the old style Lima pizza cutter wheels? Has any one else experienced this trouble? and if so how did you rectify this (I am guessing wheel replacements?) Many thanks for your advice, All the best Darren NSE DAZ Link to post Share on other sites More sharing options...
James Posted January 29, 2011 Share Posted January 29, 2011 Ultrascale wheels will offer an instant solution - you'll just need a bit of extra weight to compensate for the lack of traction tyres. Link to post Share on other sites More sharing options...
NSE DAZ Posted January 30, 2011 Author Share Posted January 30, 2011 Ultrascale wheels will offer an instant solution - you'll just need a bit of extra weight to compensate for the lack of traction tyres. Hi James, Looks like the way forward Ultrascale. Many thanks for the advice, All the best Darren NSE DAZ Link to post Share on other sites More sharing options...
RMweb Gold kipford Posted February 2, 2011 RMweb Gold Share Posted February 2, 2011 Cheaper and quicker method is to use Black Beetle wheels. Dave Link to post Share on other sites More sharing options...
pete_mcfarlane Posted February 3, 2011 Share Posted February 3, 2011 Cheaper and quicker method is to use Black Beetle wheels. Dave The problem with the Hornby 73 is that it has 2.5mm diameter axles, and most 4mm coach wheels use 2mm diameter axles. I've never seen a set of Black Beetle wheels with anything other than 2mm axles. On my 73 I used an Alan Gibson conversion pack - they don't do one for OO, so I used the EM pack and set the wheels to OO standards. The fact that there's a bit of axle projecting beyond the wheels doesn't show behind the sideframes.The Gibson wheels came in about a week, which is a lot quicker than Ultrascale. Link to post Share on other sites More sharing options...
Chris Nevard Posted February 3, 2011 Share Posted February 3, 2011 Order now, Ultrascales are super - but this is quite a long delay for delivery (at least 3 months). But I'm surprised you're having problems with PECO code 75, the new Hornby wheels are much finer than the old LIMA ones. I can run a Hornby/LIma class 59 (which I guess uses the same wheel-sets) through C&L with little knocking, PECO code no problem. More of a worry if the new Peco concrete code 75 has finer tolerances? Link to post Share on other sites More sharing options...
gridwatcher Posted February 18, 2011 Share Posted February 18, 2011 Order now, Ultrascales are super - but this is quite a long delay for delivery (at least 3 months). But I'm surprised you're having problems with PECO code 75, the new Hornby wheels are much finer than the old LIMA ones. I can run a Hornby/LIma class 59 (which I guess uses the same wheel-sets) through C&L with little knocking, PECO code no problem. More of a worry if the new Peco concrete code 75 has finer tolerances? Chris we have noticed this on Airthrey Park (also using code 75.) It appears that although they 'look' finer than Lima and are indeed much finer than EARLY Lima wheels the Hornby ones on ex Lima products are far from NMRA standard flange depths. The newer Hornby 121, 101 etc are similarly affected. Might have a word with Mr Kohler at Glasgow about this. Link to post Share on other sites More sharing options...
RMweb Gold RFS Posted February 18, 2011 RMweb Gold Share Posted February 18, 2011 I've found that when testing out newly-ballasted track I need to use my two class 73s for this, both of which have the later Hornby chassis. One has traction tyres and the other doesn't. If I use my steamers, or class 31 or 33 diesels, they will all pass the track as fit for use but subsequently the class 73s give all sorts of problems which need a second, more thorough going over to remove any stray bits of ballast etc. This implies the 73s have slightly deeper flanges than my other stock, though not as deep as the original Lima ones. All my trackwork is Peco code 75. Link to post Share on other sites More sharing options...
Pete the Elaner Posted February 25, 2011 Share Posted February 25, 2011 But I'm surprised you're having problems with PECO code 75, the new Hornby wheels are much finer than the old LIMA ones. I can run a Hornby/LIma class 59 (which I guess uses the same wheel-sets) through C&L with little knocking, PECO code no problem. More of a worry if the new Peco concrete code 75 has finer tolerances? Not all Lima has flanges too coarse for code 75. Some of my Lima (the newer stuff I guess) runs fine while some others bottom out on the sleepers. All of my I/C Swallow Mk3's used to bottom out but my GNER & Mainline Mk3's were fine. All the Lima 31's I've tried so far have been ok. I didn't realise Hornby had used THAT much of the old Lima tooling? Link to post Share on other sites More sharing options...
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