BrJ Posted June 13, 2018 Hi all my 4.5V battery train from the mid 70's still works but the wheels spin inside their mounting holes. any ideas? these things are devilishly hard to open up (all glued together) so I don't want to almost destroy it to see what the problem is if there is a simple solution. someone else must have had this prob and worked out an easy solution? Share this post Link to post Share on other sites
moustic Posted June 13, 2018 I had in mind that 4.5v motor had screws on top in order to open them ? also, there had spare parts available for this, some replacement bushes : https://www.brickowl.com/catalog/lego-4-wheel-bushes-for-4-5-v-basic-motor-set-5001 Share this post Link to post Share on other sites
BrJ Posted June 13, 2018 this motor has no screws ( I wish it did!). seems to be fully glued together. great to see there were spares, the listing says they are on the wishlist…... at least I know what I need now - something to work from! thanks Share this post Link to post Share on other sites
monai Posted June 13, 2018 Unfortunately your model is the first one, so it is glued and if you open it you should glue it again or using some duck tape. It is very strange that the wheel spin inside, because there are no friction cylinders in this model, the wheels have a pin with cam that engage inside directly on the moving axle; are you using the original wheels? https://www.bricklink.com/v2/catalog/catalogitem.page?P=wheel1b#T=C&C=5 because it doesn't worlk with the classical 4,5 ones Share this post Link to post Share on other sites
BrJ Posted June 15, 2018 ahh that's it! I am using the wrong wheels. those original wheels are long gone so I will file a flat on some newer wheel shafts to make them engage. thanks heaps for that, it'll be great to get it going again. Share this post Link to post Share on other sites
