RMweb Premium nick_bastable Posted March 19, 2012 RMweb Premium Share Posted March 19, 2012 Line No4 Sleeps and I've gone all Green EMU / DMU Latest effort to go with the easily converted 101 and 108 ( both off region ) and a rather tasty green CEP yet to be convert as not sure best approach is a class 71 This is from a BH enterprises kit ( well two ends a single etch and a few misc bits is a kit ) The chassis a Bachmann F7 needed serious milling of the chassis to make it fit under the roof recess which took several hours/attempts. As requested some pictures Wheels need changing as per the 419 MLV ( which I must finish ) hand rails drilled when I get a few hundred .3mm drill bits ready to break buffers and the pantograph is on order. At the moment it does run on the N gauge wheels rather well Last two showing just how much chassis block of the F7 needs removing Link to post Share on other sites More sharing options...
RMweb Premium DavidLong Posted March 19, 2012 RMweb Premium Share Posted March 19, 2012 Thanks for posting the photos, Nick. I'll be interested to see how it develops. Gordon shouldn't have any trouble turning down the wheels - no pointy bits (although he seems to be quite used to those now) and no horrid traction tyres. David Link to post Share on other sites More sharing options...
RMweb Premium nick_bastable Posted March 19, 2012 Author RMweb Premium Share Posted March 19, 2012 David dont think the wheels will work in 2mm due to the limited grip on the gear muff shame as nice NMRA profile although about 50% too wide Link to post Share on other sites More sharing options...
pete_mcfarlane Posted March 19, 2012 Share Posted March 19, 2012 It looks pretty good to me - what livery will you finish it in? I think there was a scratchbuilt N gauge 71 in a late 1970s Modeller, but apart from that I've never seen one in N or 2mm finescale. Link to post Share on other sites More sharing options...
RMweb Premium DavidLong Posted March 20, 2012 RMweb Premium Share Posted March 20, 2012 David dont think the wheels will work in 2mm due to the limited grip on the gear muff shame as nice NMRA profile although about 50% too wide Nick, Couldn't you superglue the axles in the muffs as we do with normal 2mm Association wheels? David Link to post Share on other sites More sharing options...
RMweb Premium nick_bastable Posted March 20, 2012 Author RMweb Premium Share Posted March 20, 2012 David even if the axles gripped there is a step in the axle which makes the riding bearing(s) extend the wheels no bearing unless i can cut/find some 0.5mm long brass of the same diameter as the muff/bearing, http://www.rmweb.co.uk/community/index.php?/gallery/image/25348-bogie/ shows the solution used on a TPM converted chassis However still investigating as awaiting the other body bits Link to post Share on other sites More sharing options...
Bryn Posted March 22, 2012 Share Posted March 22, 2012 Looking good Nick, what livery are you planning for this? Link to post Share on other sites More sharing options...
RMweb Gold bcnPete Posted March 22, 2012 RMweb Gold Share Posted March 22, 2012 Nice work Nick. Any chance of a 'end on' pic next time you have the camera handy... Link to post Share on other sites More sharing options...
RMweb Premium nick_bastable Posted March 22, 2012 Author RMweb Premium Share Posted March 22, 2012 Bryn it will if finished be original green ( none of this blue stuff ) Pete will sort a end on shot on next progress update Link to post Share on other sites More sharing options...
StuartM Posted March 23, 2012 Share Posted March 23, 2012 Nice one, In the recent wishlist pole, I placed a tick in the class 71 box, so nice to see one being made Link to post Share on other sites More sharing options...
Dtwo Posted March 26, 2012 Share Posted March 26, 2012 David dont think the wheels will work in 2mm due to the limited grip on the gear muff shame as nice NMRA profile although about 50% too wide Nick, I don't know if you know or not, but Ian Morgan wrote an article for the 2mm Magazine in the 90s explaining how to finescale these chassis. It involves using the Association's solid tender wheels and bits of rod and tube. If you've got the 2mm archive DVD/CD you'll be able to find it quite easily. David S. Link to post Share on other sites More sharing options...
RMweb Premium nick_bastable Posted March 27, 2012 Author RMweb Premium Share Posted March 27, 2012 David strange to say the original reason for the F7's was for a TPM chassis with the archive DVD article in mind, trouble is Bachmann have changed the bogie / wheel design..... since the article May get Gordon to turn them anyway and see if I can cut suitable 0.5mm sleeves to extend the bearings. Hand rails are on if not perfect and Pantograph sorted Link to post Share on other sites More sharing options...
Dtwo Posted March 28, 2012 Share Posted March 28, 2012 David strange to say the original reason for the F7's was for a TPM chassis with the archive DVD article in mind, trouble is Bachmann have changed the bogie / wheel design..... since the article Nick, I didn't realise you knew about Ian's article, and I didn't know they'd changed the chassis either. If they hadn't messed with it you could have used some spoked tender wheels, which would have looked good. Looking again at your photos I notice that the bogies don't have the plug to take the sideframes either, so you can't easily use the TPM sideframes that were intended for EMUs, but (I think) look fairly similar to 71, 73 & 74 bogies. David Link to post Share on other sites More sharing options...
BernardTPM Posted March 28, 2012 Share Posted March 28, 2012 I notice that the bogies don't have the plug to take the sideframes either, so you can't easily use the TPM sideframes that were intended for EMUs, but (I think) look fairly similar to 71, 73 & 74 bogies. The revised 1611 version has added etched brackets that glue under the bogie retaining plate to carry the sideframes now. Link to post Share on other sites More sharing options...
Adam Posted March 29, 2012 Share Posted March 29, 2012 Nick, I didn't realise you knew about Ian's article, and I didn't know they'd changed the chassis either. If they hadn't messed with it you could have used some spoked tender wheels, which would have looked good. Looking again at your photos I notice that the bogies don't have the plug to take the sideframes either, so you can't easily use the TPM sideframes that were intended for EMUs, but (I think) look fairly similar to 71, 73 & 74 bogies. Even at this size, it's difficult to say that the bogies of these three classes look that much alike - the 71 and 74 is nearly 2' longer in the wheelbase with 4' diameter wheels as opposed to 3'4" - and although that might be overlookable the secondary suspension of a 71 consists of a pair of enormous leaf springs which are very apparent. In 4mm (been there and done that if you look at my blog) the difference is obvious but I suppose it might be less apparent at half the size. The 74 bogie is reasonably close to an oversized 73 but it's still 20% or so bigger. That said, I don't suppose the wheelbase of the donor chassis is 100% right? Adam Link to post Share on other sites More sharing options...
greybear Posted March 30, 2012 Share Posted March 30, 2012 Don't have all the evidence to hand, but the 71/74 chassis has the same bogie wheelbase, and similar overall wheelbase, as the opposition's class 35 Hymek. Some parts may be of use if you can find one of the Dapol models. Link to post Share on other sites More sharing options...
RMweb Premium DavidLong Posted April 1, 2012 RMweb Premium Share Posted April 1, 2012 Don't have all the evidence to hand, but the 71/74 chassis has the same bogie wheelbase, and similar overall wheelbase, as the opposition's class 35 Hymek. Some parts may be of use if you can find one of the Dapol models. Interesting call about the Hymek. According to drawings the bogie wheelbase is the same at 10' 6" and the bogie centres would work out at 3mm less than a Class 71. The Dapol 26/27 chassis might also be a consideration with bogie wheelbase of 10' which may compensate for the bogie centres working out at 4mm more than Class 71. You would need some ideas about the bogie sideframes but no problem for Gordon to do the wheels. David Link to post Share on other sites More sharing options...
RMweb Premium DavidLong Posted July 9, 2012 RMweb Premium Share Posted July 9, 2012 Hi Nick, Just giving this a bump to see if there has been any progress. David Link to post Share on other sites More sharing options...
RMweb Premium nick_bastable Posted July 10, 2012 Author RMweb Premium Share Posted July 10, 2012 Hi Nick, Just giving this a bump to see if there has been any progress. David David all rather stalled at the moment having made a good start, the question of the bogie size is one that I will live with the under scale bogie of the F7 to try and achieve a scale bogie would involve scratch building the whole chassis and i have enough problems as it is if I scratch built the chassis then the body would really not be up to the effort. Cosmetic bogie side frames were drawn up to be cut and laminated from 10thou plastic but proved rather a failure As for painting I'm on attempt no 4 the first two where rubbish and stripping via my old method ( caustic soda) dissolved the filler and required rebuilding after each strip attempt no 3 the paint splattered to a orange peel effect although I learned something via a military forum and stripped using domestic antisceptic (Dettol or a cheap clone ) which works remarkably well and does not disolve plastic filler ( makes you wonder what it does to cuts ) attempt no 4 sits etched primed delayed by domestic duties, lack of interest and a diversion into other things ( a J94 chassis - fail a LSWR 4 wheeler - awaiting painting and fitting the support for the cassette system to the Canterbury Area groups shunting plank - success Your post has prompted me to at least looking at it again Link to post Share on other sites More sharing options...
RMweb Premium DavidLong Posted July 15, 2012 RMweb Premium Share Posted July 15, 2012 David all rather stalled at the moment having made a good start, the question of the bogie size is one that I will live with the under scale bogie of the F7 to try and achieve a scale bogie would involve scratch building the whole chassis and i have enough problems as it is if I scratch built the chassis then the body would really not be up to the effort. Cosmetic bogie side frames were drawn up to be cut and laminated from 10thou plastic but proved rather a failure As for painting I'm on attempt no 4 the first two where rubbish and stripping via my old method ( caustic soda) dissolved the filler and required rebuilding after each strip attempt no 3 the paint splattered to a orange peel effect although I learned something via a military forum and stripped using domestic antisceptic (Dettol or a cheap clone ) which works remarkably well and does not disolve plastic filler ( makes you wonder what it does to cuts ) attempt no 4 sits etched primed delayed by domestic duties, lack of interest and a diversion into other things ( a J94 chassis - fail a LSWR 4 wheeler - awaiting painting and fitting the support for the cassette system to the Canterbury Area groups shunting plank - success Your post has prompted me to at least looking at it again Nick, Thanks for the update. Sounds like perseverence is the word! David Link to post Share on other sites More sharing options...
RMweb Premium nick_bastable Posted September 30, 2012 Author RMweb Premium Share Posted September 30, 2012 Just to show this isnt yet another kit languishing forgotten today I made attempt No5 to spray the basic body ( the 71 has had more baths than Cleopatra ) a nice shade of GREEN knowing how much bcnpete likes the colour As requested many moons ago a end view It all rather cruel at that size now letting it harden prior to removing the masking tape and a teaser as to what else I'm up to Link to post Share on other sites More sharing options...
RMweb Gold bcnPete Posted October 2, 2012 RMweb Gold Share Posted October 2, 2012 Pete will sort a end on shot on next progress update Thanks Nick Glad to see you have the primer done for the blue now Look forward to see more of the 'teaser' in construction...third rail is looking good too Link to post Share on other sites More sharing options...
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