2009 Trackmaster Edward Cracked gear

10 Replies, 520 Views

Hi everyone,
I recently picked up a 2009 Trackmaster Edward (with the battery in the tender) and his driving wheel kept jamming. I opened him up and after cleaning his gears and such, found that the small gear that gets moved across by the switch to engage the gearbox is cracked. I've tried gluing gears in the past and it does not work. Is it possible to buy a replacement gear so I can return him to the rails?
Thanks,
Generic
Call me Generic ...wait.

Never forget the K.I.S.S. principal
what does K.I.S.S. stand for, you ask?
Keep It Simple Stupid
Simple answer is 'yes'.  This subject has been covered here on numerous occasions. Try putting 'cracked gear' in the search box. If you still can't find what you need, then please feel free to come back with details of the width, diameter, and number of teeth on the gear that you need to replace and I'm sure someone can find the one you want on ebay from China.

For example: https://www.ebay.co.uk/itm/384289789813
[-] The following 2 users Like chrisjo's post:
  • generic_truck_69420, MrKirby48
Thanks! I'll have a look at previous threads and come back if I cant find anything
Call me Generic ...wait.

Never forget the K.I.S.S. principal
what does K.I.S.S. stand for, you ask?
Keep It Simple Stupid
Or Amazon, for example this post:  https://www.blueplastictracks.org/thread...l#pid67369

I expect the hole will be 2mm diameter, they usually are (sometimes given as 1.95mm in listings).

This thread is a classic: https://www.blueplastictracks.org/thread-3006.html
Fortunately there are far more seller listings with more detail in them now than there were even six years ago.

This is the most recent lot that I bought, used to successfully repair an on-top Plarail monorail

[Image: image.png]
(This post was last modified: 11-19-2024, 09:26 AM by chrisjo.)
[-] The following 1 user Likes chrisjo's post:
  • mitzalplik
I got some pictures and dimensions of the cracked gear. I counted 14 teeth.
[Image: IMG-20241119-200940949.jpg]

[Image: IMG-20241119-201054110.jpg]

[Image: IMG-20241119-201200382.jpg]

[Image: IMG-20241119-201245214-HDR.jpg]
Call me Generic ...wait.

Never forget the K.I.S.S. principal
what does K.I.S.S. stand for, you ask?
Keep It Simple Stupid
[-] The following 1 user Likes generic_truck_69420's post:
  • mitzalplik
First search I did produced these:

https://www.ebay.co.uk/itm/382419195815

If you can't find an exact match, these are the correct diameter (8mm) and number of teeth (14), but out of the box they are too thick and don't have the protruding smooth boss. Nonetheless I feel that with a little care one could rub one down on grit paper or a file to get it the right thickness (about 2mm? you didn't show that), then cut the boss off the cracked one and superglue it onto the new one.

Keep looking!

Getting closer. These look pretty much exactly right?  The picture is generic but the specifications seem to check out.  The key descriptor seems to be 'spur gear'.

https://www.bearingboys.co.uk/Plastic-Ho...rm-68940-p
(This post was last modified: 11-19-2024, 10:24 AM by chrisjo.)
[-] The following 2 users Like chrisjo's post:
  • generic_truck_69420, mitzalplik
Thank you very much! I'll have a look at getting on to it soon.
Call me Generic ...wait.

Never forget the K.I.S.S. principal
what does K.I.S.S. stand for, you ask?
Keep It Simple Stupid
If its the gear you have pictured with the caliper, I don't think anyone has found a source for that special cog. Research the Links Chrisjo provided above, if Member Ripley (who was our resident gear replacer) couldn't find a source, then its probably near impossible to find as he spent many hours, days and money trying. To me, your best bet is to find parts lots on ebay that have many not running or damaged trains for sale to start accumulating a stash of repair items. I could be wrong as my memory is not as it used to be and Mr Ripley has been gone for what seems to be an eternity 😒so if you do come across a source please share it with us. Good Luck
[-] The following 2 users Like Super's post:
  • generic_truck_69420, mitzalplik
Hi everyone, I worked on replacing those exact gears before for the older C battery tender engines. There isn't an easy way to find that specific gear (I haven't found it anyway) but I vaguely remember using a gear commonly found in flat drive engines I'll look for one... Ok here's a picture... Oh apparently it's been so long from my last post that apparently I can't just upload pictures from my hard drive anymore? Anyway I'm sure someone else can post a picture of the 14 tooth gear in the flat drive unit. I used it to fashion a temporary replacement until I was able to replace it proper by finding a spare. Both Chrisjo and Super's method is sound if you know how to manipulate plastic gears to the shape you want or to simply buy a cheap tender engine to use its likely non cracked gear respectively. 

So buying a cheaper tender engine with the same gears is the fastest way to go but cost money, using a flat drive unit's 14 tooth gear is creative as a replacement, and manipulating 14 tooth gear that's too thick to the shape you want is expert level lol.
Its just not you Mitza who have had troubles with images using the 'PostImage' option. Check out this update from our Head Tech here at BPT's for how to add your image now. Hope it works as I would like to see what you came up with.
https://www.blueplastictracks.org/thread...l#pid69636
[-] The following 1 user Likes Super's post:
  • mitzalplik



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