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Stuttering power bogie solved (but not fixed!)

Postby kaygee46 » Sat Jun 27, 2015 3:05 am

I had previously mentioned in a different thread that one of my HST locos was not running smoothly. I've found the problem which unfortunately means that I will have to dismantle the loco to install a new power bogie. (My previous thread was asking if there is any maintenance documentation in existence and it appears sadly that there isn't).
Anyway the problem was that one of the wheel sets kept moving out of its retaining side keepers (I don't know the correct terminology) enough to disengage it from the main gear, but not enough to let it come away completely. Closer examination revealed that one of the keeper's small conical bits that go into the recess on the wheel itself seems to have lost its point.
While checking this out I also noticed that another driving wheel had chipped or de-laminated, this time even distorting the face of the wheel. See the digital microscope pics attached.
If anyone can help me with instructions on how to dismantle the HST loco please do so. Is there a replacement powered chassis that fits the HST?

Sat Jun 27 11-42-09.jpg
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Sat Jun 27 11-15-48.jpg
Sat Jun 27 11-15-48.jpg (34.52 KiB) Viewed 4014 times
Ken G, Ipswich Qld Australia
Me transmitte sursum Caledoni
kaygee46
 
Posts: 8
Joined: Tue Jun 02, 2015 1:46 pm

Re: Stuttering power bogie solved (but not fixed!)

Postby Ozrail » Sat Jun 27, 2015 7:08 am

If the rest of the unit is still ok, you can buy a replacement Bogey http://www.tgauge.com/product/274/7/bla ... sion-bogie.

And a pack of spare spring is a must if you plan to do a replacement.
http://www.tgauge.com/product/125/0/bog ... on-springs


Otherwise this is the chassis you would need to buy http://www.tgauge.com/product/187/2/16- ... ed-chassis
The only downside is that, the bogeys are grey, not black.

I would need to recheck the proceedure on how to open up a HST.
Check out my Shapeways store for T-gauge stuff.
Image
http://www.shapeways.com/shops/everythingtgauge?s=0
Ozrail
 
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Location: Queensland, Australia

Re: Stuttering power bogie solved (but not fixed!)

Postby kaygee46 » Sat Jun 27, 2015 11:21 am

Thanks Ozrail. After that previous post I decided to have a go at replacing the bogie. I still had one complete spare bogie having previously bought two when I had the chipped/delaminated wheel a year or so ago. I didn't have any spare springs but went ahead anyway. I swapped the bogie over, but I managed to stretch one of the springs just a little. When it was all back together it ran perfectly in reverse, but not so well forward. I decided to swap the stretched spring with a good one from the un-powered front bogie and promptly lost it. I'll put an order in for some new springs, but to make it worthwhile (the postage will be more than the springs) I might get some other stuff as well. Do the spare wheel sets from T Gauge drop straight into your wagons, and what couplers should be used?
Ken G, Ipswich Qld Australia
Me transmitte sursum Caledoni
kaygee46
 
Posts: 8
Joined: Tue Jun 02, 2015 1:46 pm

Re: Stuttering power bogie solved (but not fixed!)

Postby Ozrail » Sat Jun 27, 2015 1:26 pm

It depends on which wagon you are referring to.

The little 2 axle wagon require special wheels sold through T-gauge.com
http://www.tgauge.com/product/253/7/2-p ... -wheelsets
For couplers (ask for grey or use the spare ones provided with any motorised chassis). http://www.tgauge.com/product/58/7/buckeye-coupler-set
A good idea is to hook a set permanently together and just put couplers on the end units. http://www.tgauge.com/product/58/7/buckeye-coupler-set
Just don't use the springs, otherwise the wagons won't be able to go around curves.

As for my bogey wagons, they just require a set of these, cut to the correct length.
http://www.tgauge.com/product/111/2/16- ... le-chassis
Capture.JPG
Capture.JPG (56.85 KiB) Viewed 3997 times
You will need to trim away these tab things along the side of the chassis for the bodies to sit flat, which is easy to do with a craft knife.
Just glue (I double-sided tape) a body on top and your done, no wheels or couplers to try and install.

If you want some Queensland accurate rolling stock, I might be able to release some SX carriages.
But I don't have any scaled locomotives yet, been distracted with other jobs to make one lately.
Check out my Shapeways store for T-gauge stuff.
Image
http://www.shapeways.com/shops/everythingtgauge?s=0
Ozrail
 
Posts: 90
Joined: Wed Nov 20, 2013 10:50 pm
Location: Queensland, Australia


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