leopardml2341 Posted June 18, 2017 Share Posted June 18, 2017 (edited) Fellow modellers, please post details of your observed affected models i.e. Manufacturer, catalogue numbers and model description. Please be kind to limit posts to just these details and refrain from general discussion so that the topic remains easily searchable.Despite the polite request above, the thread had become a discussion topic...... Please continue to post, but ONLY details of models that YOU have observed in the example format:(manuf) (Cat No.) (Model) (affected part) Bachmann 32-150 N Class footplate casting distortion and break up Any posts that do not contain this information will be hidden so as not to clutter the thread with general discussion, for which there are many other outlets on RMWeb. Please continue to post as requested and the compiled lists will appear below in due course. Rgds.THE LIST MazakRotList_v2.0_07042022.pdf Edited April 14, 2022 by leopardml2341 New List Added 7 1 4 Link to post Share on other sites More sharing options...
leopardml2341 Posted December 31, 2017 Author Share Posted December 31, 2017 Thanks everyone for your input to this thread in 2017. Please continue into 2018 and help your fellow modellers in completing this list as best we can. I will update the files generally on a monthly frequency so don't worry if you've posted and it remains in the thread body for a little time. Best wishes for 2018. Link to post Share on other sites More sharing options...
leopardml2341 Posted January 17, 2018 Author Share Posted January 17, 2018 (edited) Another polite reminder: Please continue to post ONLY details of affected models. By all means link to here from other discussions about affected models - but keep this just as a postbox for models YOU can add to the list and increase its usefulness for all RMWebbers. Thank You! Edited January 17, 2018 by leopardml2341 Link to post Share on other sites More sharing options...
leopardml2341 Posted February 27, 2018 Author Share Posted February 27, 2018 Folks, For the benefit of all can we keep the thread for notifying of known problems and take discussion elsewhere. Please see post #1. Thank You 2 Link to post Share on other sites More sharing options...
leopardml2341 Posted April 11, 2018 Author Share Posted April 11, 2018 Further to the PDF list. i have four different Klein Modelbahn class 2143s and each have suffered the Hornby class 31 style damage. In other words the mazak chassis block has expanded at the corners and cracked the plastic body moulding at each cab corner. Will you please post the catalogue and model numbers? Link to post Share on other sites More sharing options...
sandwich station Posted June 3, 2018 Share Posted June 3, 2018 G'day, all, Yesterday, a fellow club member asked me to look at the tender chassis of a Hornby (Railroad) loco-drive Class 9f 2-10-0. This Mazac part of this chassis, modified by Hornby from the earlier tender-drive version, had warped and begun to disintegrate, jamming the wheels. It fell apart as we separated it from the outer plastic moulding. Regards, Rob Is it this one? Hornby R2880 9F no 92221 If so, it's already on the list. Link to post Share on other sites More sharing options...
Gtucker72 Posted June 29, 2018 Share Posted June 29, 2018 L1 - 67759 rear bogie. Wheels jammed and on trying to free them the whole rear bogie cracked and fell apart. Link to post Share on other sites More sharing options...
RMweb Premium BR60103 Posted September 7, 2018 RMweb Premium Share Posted September 7, 2018 I think I have one. Posted about this in a Hornby thread. R2925 Clan MacGregor. Front bogie. tabs holding rear axle bending outward, binding axle. Tabs broke off when undoing the screw to replace the bogie. Link to post Share on other sites More sharing options...
RMweb Gold adb968008 Posted November 3, 2018 RMweb Gold Share Posted November 3, 2018 (edited) Another Mazak Horror... Liliput / Bachmann BR 52 Tender chassis, In this case L105200 putting the tub into the tub tender. Edited November 3, 2018 by adb968008 Link to post Share on other sites More sharing options...
Ravenser Posted December 9, 2018 Share Posted December 9, 2018 Another front in the mazak rot war: :Lima Class 20 - 20171 in large logo BR blue. The chassis was very difficult to remove to get access to lubricate after long storage. On trying to lever off the bodyshell a second time the main chassis block fractured across, at the weak point where there is a large cut out below the motor, just beyond the battery box block Box shows 205247A1 , but this may not be original - I had the model second-hand over 20 years ago Link to post Share on other sites More sharing options...
GeraldH Posted December 9, 2018 Share Posted December 9, 2018 Recently received a Mainline BR Black 43XX with one side of the split chassis showing distortion and cracks. Link to post Share on other sites More sharing options...
railsquid Posted January 4, 2019 Share Posted January 4, 2019 (edited) And an entry from Japan - the MicroAce N scale 0-series (original "Bullet Train") Shinkansen, catalogue number A-0259 (production year 2002, comes as a very nice wooden boxed set), which I acquired 2nd hand at a very nice price because: MicroAce 0 series Shinkansen - chassis issue by Rail Squid, on Flickr MicroAce 0 series Shinkansen - chassis issue by Rail Squid, on Flickr At this point in its life the chassis was only being held together by the plastic frame, and disintegrated into multiple shards: MicroAce 0 series Shinkansen - chassis issue by Rail Squid, on Flickr MicroAce 0 series chassis (2) by Rail Squid, on Flickr Known issue with this particular model. Fortunately MicroAce replacement chassis E0004 (actually for a 300 series Shinkansen) can be bodged to fit. Edited January 4, 2019 by railsquid Link to post Share on other sites More sharing options...
leopardml2341 Posted February 10, 2019 Author Share Posted February 10, 2019 Fellow RMWebbers, please accept my apologies for still not updating the master list. 2 Link to post Share on other sites More sharing options...
leopardml2341 Posted May 22, 2019 Author Share Posted May 22, 2019 Please chaps, can we keep the posts to simply reporting examples of failures. 1 Link to post Share on other sites More sharing options...
leopardml2341 Posted March 31, 2020 Author Share Posted March 31, 2020 Thread tidied up and revision to list at post #1. Apologies for the delay in doing this, please keep posting (only) details of affected models as they come to light. 5 Link to post Share on other sites More sharing options...
Wacol Posted April 20, 2020 Share Posted April 20, 2020 Bachmann class 37/0 37242 Mainline Blue. Catalogue number 32-784. Chassis warped and disintegrating with mazak rot and subframe badly distorted by the bow in the metal chassis. 1 2 1 Link to post Share on other sites More sharing options...
RMweb Gold pheaton Posted April 21, 2020 RMweb Gold Share Posted April 21, 2020 (edited) that's very concerning!!!!! have you to a picture? It might be worth having a chat with Bachmann about it when I raised concerns about a couple of 47s showing tell tale early signs they took it very seriously. My 47s haven't shown any further issues but this loco is a very new model. Edited April 21, 2020 by pheaton 1 Link to post Share on other sites More sharing options...
Wacol Posted April 21, 2020 Share Posted April 21, 2020 I've emailed Bachmann. May be a couple of days before they reply. A couple of pictures - 4 Link to post Share on other sites More sharing options...
cypherman Posted April 29, 2020 Share Posted April 29, 2020 (edited) Hi all, I would like to add the Lima Prairie. Although this is basically a plastic chassis and body the weight is Mazak. Maker: Lima. Model: Small prairie Fault: Mazak weight expanding and bubbling. Result: Cannot remove weight from chassis. Expanded weight making it difficult to remove body from chassis as it has expanded to grip both sides of the body from the inside. Temporary fix: Filed weight insitu to allow easier fitting of body. Still unable to get weight out with out damaging chassis. Edited April 29, 2020 by cypherman 1 2 Link to post Share on other sites More sharing options...
pauln Posted May 4, 2020 Share Posted May 4, 2020 Another one to add. Some of the Merchant Navy locos are on the list already but I have just found my United States Lines 35012 from the Orient Express set has the bogie rot issue - just fell apart in my hands. I don't think the loco has a catalogue number but the box set is R1038. 1 3 Link to post Share on other sites More sharing options...
97xx Posted May 5, 2020 Share Posted May 5, 2020 Mainline Manor Class 4-6-0 Locomotive BR Green Livery Model 37-043 Split chassis. One half of mazak chassis casting has expanded thus jamming axles. Parts visibly blown, cracks visible and very brittle around motor mount. Snaps off when motor screw undone. Other half dimensionally stable! 3 Link to post Share on other sites More sharing options...
Dad-1 Posted June 6, 2020 Share Posted June 6, 2020 An increasing problem for Hornby 9F Railroad Loco Drive models. The motor clamps are now decaying. I have R2880 Loco 92221 where the mounting around the flywheel jammed movement thro expansion. Then R2785 Evening Star 92220 where the motor mountings have warped enough to separate the motor from the drive. …… It freewheels quite well. On both the main footplate looks O.K at the moment I still have to check the tender from Evening Star, but as already listed the tender chassis for 92221 has locked one axle thro decay expansion. Geoff T 4 Link to post Share on other sites More sharing options...
Rockalaucher101 Posted July 21, 2020 Share Posted July 21, 2020 On 06/06/2020 at 16:25, Dad-1 said: Then R2785 Evening Star 92220 where the motor mountings have warped enough to separate the motor from the drive. …… It freewheels quite well. Might have to give mine a look then as well. Hopefully mine's not affected Link to post Share on other sites More sharing options...
RMweb Gold RedgateModels Posted July 21, 2020 RMweb Gold Share Posted July 21, 2020 On 06/06/2020 at 16:25, Dad-1 said: Then R2785 Evening Star 92220 where the motor mountings have warped enough to separate the motor from the drive. …… It freewheels quite well. hmmmm, will have to check my Golden Arrow/R2785 Crosti conversion. Which part is affected? Link to post Share on other sites More sharing options...
Dad-1 Posted July 21, 2020 Share Posted July 21, 2020 On the 9F's I didn't even try removing the opposite end motor clamp. I didn't see the point as both locomotives were and still are beyond further use. I should write to Hornby with a moan, the reason is they are still making and selling 9F's therefore in theory replacement parts could be available. However it'll probably be a waste of time as they pass all spares responsibility on to Peters Spares. Here are the two 9F clamps :- Evening Star's first I didn't photograph the tender problem because I knew I could make a plasticard insert which initially seems like it'll be fine. However without a working locomotive I can't do the final proof testing. While it's difficult to throw stones at Hornby, they didn't use contaminated materials by choice, but with current 9F products they should make spares available. I have no reason to think they have changed the design as those earlier products were fine - Until !! Geoff T. 2 Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now