Board index Talking T Gauge Forum T Gauge Modelling Tips, Tricks & Tutorials

The three Ts. Lift the lid on the secrets of how you do things so others can have a go.....

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby dkightley » Sat Mar 08, 2014 3:37 pm

The re-attachment of those little springs is indeed the trickiest part of the process. And if approached correctly is actually a lot less frightening than you may think.

Firstly, make sure you are doing any job on small things in a clutter-free environment on a smooth clean work surface. Also, I would recommend wearing short sleeves to prevent cuff or hanging sleeves from sweeping your work area if when you move around. And just have the tools you need at hand and easy to pick up. Ideally, use either a desk or head mounted magnifier and plenty of light!

Finally...make sure you're not going to be disturbed...the last thing you want is a disruption just at the critical moment! No pets, kids or loved ones within hitting, kicking, or earshot, as appropriate....just in case. ;) ;)

The way I approach fitting the springs is to hold the unit between thumb and fingers..like this:
IMG_0954_red.JPG
IMG_0954_red.JPG (31.16 KiB) Viewed 19963 times

You will find you can roll the unit round so your thumb presses on the lower half of the spring..try it with an assembled unit!

To put the spring in, first put the bogie in place and hold the unit as shown above.

Using a pair of needlepoint tweezers, pick up the spring by the top loop, and locate the bottom loop in the hook on the bogie.

Roll the unit so your thumb is holding the spring in place.

Once you're happy you're holding the spring with the side of your thumb, stretch the spring so you can then carefully drop the top loop into the hook on the busbar.

Sounds easy! Well, the first time you put tension on the spring, I can guarantee it will slip out the tweezers......and because you're restraining it with the side of your thumb, it won't go anywhere. So you'll be able to grab it again....and try again. It might take half a dozen tries to hook the spring up....but providing your thumb stops the spring from escaping, a little perseverance will win the day!

With the first spring on, carefully turn the unit round...ensuring you keep the bogie in place...and repeat for the second side.

Stop for a breather.....and then its on with the other bogie!!


And just in case you're wondering......yes, I have lost a spring. Only one! But that was before I started using the above method. Once they go.....boy do they fly! And in my case, probably only to be seen by the inside of the vacuum cleaner!! Its a good job you can get spares!
Doug Kightley
Webmaster here and volunteer at the National Tramway Museum http://www.tramway.co.uk
User avatar
dkightley
 
Posts: 1127
Joined: Wed Nov 13, 2013 9:43 pm
Location: Nottingham, UK

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby grahame » Sat Mar 08, 2014 11:52 pm

Hi Doug, Thank you so much for writing such a detailed procedure. I will certainly follow it to the letter when the new motor arrives. I think you're the very person I hoped to find. The only other person in the world who has the "bottle" to take one of these tiny things apart,

Cheers,

Grahame
British exPat in Houston, Texas.
User avatar
grahame
 
Posts: 49
Joined: Sat Mar 01, 2014 4:07 am
Location: Houston, Texas

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby ConnorL » Sun Mar 09, 2014 12:12 am

I was wondering...but what kind of motor is this? This looks extremely similar to one of my phone's motor when I changed the battery of it. I can't remember the phone since I got rid of it.
ConnorL
 
Posts: 87
Joined: Thu Nov 14, 2013 1:55 am
Location: Chesapeake, VA USA

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby dkightley » Sun Mar 09, 2014 12:19 am

You're right, Connor.

The motors used in T gauge power units are the same sort of motor that is used as the vibrator in phones. And its probably the demand for motors small enough for phones that resulted in the availability of the motors that just happened to be perfect for T.

So T gauge has the world of mobile phones to thank! :)
Doug Kightley
Webmaster here and volunteer at the National Tramway Museum http://www.tramway.co.uk
User avatar
dkightley
 
Posts: 1127
Joined: Wed Nov 13, 2013 9:43 pm
Location: Nottingham, UK

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby ivanf » Sun Mar 09, 2014 11:52 am

When replacing the springs, the first spring can be attached to the chassis connector and then hook the bogie on it, then wrap that round the bottom of the chassis block. The proceed as detailed above.

That way you only have to play the twangy spring game once.

Don't know if this works for the driving bogie but it's fine for the none driving bogie.
ivanf
 
Posts: 107
Joined: Wed Nov 20, 2013 7:35 pm

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby dkightley » Sun Mar 09, 2014 12:23 pm

.....the twangy spring game....

I like this description of the challenge. :D :D :D
Doug Kightley
Webmaster here and volunteer at the National Tramway Museum http://www.tramway.co.uk
User avatar
dkightley
 
Posts: 1127
Joined: Wed Nov 13, 2013 9:43 pm
Location: Nottingham, UK

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby grahame » Tue Apr 15, 2014 11:57 am

New motor and spares springs just arrived in Houston from Tgauge.com......will report back when the job is done. thanks for all the advice.
British exPat in Houston, Texas.
User avatar
grahame
 
Posts: 49
Joined: Sat Mar 01, 2014 4:07 am
Location: Houston, Texas

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby grahame » Thu Apr 17, 2014 9:39 pm

After a few misfires I managed to get all four springs in place. Many thanks to Alan Ramsay at Tgauge.com for sending me a pack of spare springs. I needed at least one. After several attempts they can get stretched and deformed. All 3 motorised units (front, rear and buffet) running well now in both directions. I found a combination of Doug's method and sliding the second spring eyelet off the tip of a needle on to the hook worked the best.It IS tricky but the last one was a lot easier than the first one :).One at a time...I did the drive bogie first...

My advice to any one doing this for the first time. Be sure to buy a pack of spare springs along with the motor. That will be the best 2.50 GBP you ever spent and you will sleep a lot easier the night before :).
British exPat in Houston, Texas.
User avatar
grahame
 
Posts: 49
Joined: Sat Mar 01, 2014 4:07 am
Location: Houston, Texas

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby dkightley » Thu Apr 17, 2014 9:54 pm

Glad you got it sorted. :)

Tricky blighters, those springs!!

And I'm glad you've now got all three units running okay now. Don't spend too long playing, though! You might get into trouble with "'er indoors"! ;)
Doug Kightley
Webmaster here and volunteer at the National Tramway Museum http://www.tramway.co.uk
User avatar
dkightley
 
Posts: 1127
Joined: Wed Nov 13, 2013 9:43 pm
Location: Nottingham, UK

Re: Motor Replacement for T Gauge Inter City 125 Power Car

Postby grahame » Thu Apr 17, 2014 10:21 pm

I wonder if some type of design change might be possible, where the spring is actually attached/welded to the bogie hook..that way you would only need to attach one end...to the bus bar.
British exPat in Houston, Texas.
User avatar
grahame
 
Posts: 49
Joined: Sat Mar 01, 2014 4:07 am
Location: Houston, Texas

Next

Return to T Gauge Modelling Tips, Tricks & Tutorials

Who is online

Users browsing this forum: No registered users and 2 guests


cron