Hi Andy; You are correct that there is a compromise in doing this mod but it is safer to do this than to play with the guard rail on the outside of the switch.Message 1 of 57 , Aug 1, 2009View SourceHi Andy;
You are correct that there is a compromise in doing this mod but it is safer to do this than to play with the guard rail on the outside of the switch. I had no problems with the standard MTL cars when I tested it last night but you are correct there is going to be a bit of wheel drop but only on the wheel set that are too tight to negotiate the switch currently.
The problem with changing the gap between the guard rail and outisde rail is that now those wheelset that work with the switch now can reach the point of the frog and pick the switch which is worse than a bit wheel drop. So now with metal wheel sets you can hear the cars cross the switch just like the real thing.
When all is said and done this is the only mod short of changing the back to back distance on wheelsets which might work for some. Changing the back to back distance on wheelsets is more of a challenge to some and in some cases there is more $dollars at stake doint this than the cost of a switch if you get it wrong.
--- In email@example.com, Andy Reichert <andy_r@...> wrote:
> Now I see. That's normally referred to as the wing rail. The guard rails
> are the plastic ones towards the outside.
> For anyone who doesn't already know. Wheels don't (typically mustn't)
> normally run on the flange tips through frogs, so the function of the
> wing rails is to carry the weight of the wheel as it crosses the length
> of the gap between the closure rail and the tip of the vee. They don't
> guard or steer anything.
> For that to work, the wheel tire has to be wide enough to reach across
> to the wing rail right up to the point that it finally gets to ride back
> onto the vee tip and normal rail support. Otherwise it starts to drop
> into the hole just before it gets to the vee tip.
> Hence the important fact that for that not to happen, the wheel width
> must be a tad greater than twice the frog flangeway width.
> My understanding is that the Z FW is 0.025 and the wheel width is 0.053.
> So with a 0.025 FW, it's just OK. But widening the FW to by 0.010 each
> side of the Vee could open 2 x FW up to 0.060, or wider than the min
> wheel width.
> My recommendation is that you don't modify any more frogs that way, or
> you may end up with reliability problems with the good cars and locos
> instead. Better to check the AZL wheel back to back and fix it if wrong,
> as I've seen several people suggest here already.
> Garth Hamilton wrote:
> > Hi Don
> > Take a look at the picture in the photo section of this site and look for my folder Garth's stuff and look at last photo in the folder.
> > Maybe I should send my modified switch to you first and then you can send it on to Reynard. Do you have some AZL engines that have a problem with MTL switches.
> > What I did was run the dremel disc at slow speed and run it down the inside of the metal guard rail through the throat of the switch frog. This does not take great horse power and force but rather a gentle stable hand to manipulating the cutting disc so you are putting pressure not down into the slot but horizontally against the guard rail. Too much pressure and you will break your disc. You can see marks in the bottom of the switch but there is no goove there. When I had reduced the thickness to the point where I was concerned about colapsing the guard rail that was left standing, then I stopped using the dremel tool and used a very small spade jewelers file to dress the rough cut on the guard rail and smooth it out. Basically I opened the gap from .0295 to .0395 or about 10 thou of an inch.
> > cheerz Garth
... Andy, It is too soon to say. I know from my contacts with Marklin that the Z line is part of their long term plans. But it really depends on the new ownerMessage 57 of 57 , Aug 4, 2009View SourceIn a message dated 8/1/09 1:21:13 PM, andy_r@... writes:
> Do you know what isAndy,
> happening to the Marklin product lines in the future, post bankruptcy?
It is too soon to say. I know from my contacts with Marklin that the Z line
is part of their long term plans. But it really depends on the new owner
once they are established. The Z line is now under the control of the Trix
team. There are some in Marklin who want to bring it back to the Marklin fold.
We are all waiting for this time of uncertainty to come to an end.
Ztrack Magazine Ltd.
6142 Northcliff Blvd.
Dublin, OH 43016
phone/fax: (614) 764-1703
Distributor American Z Line
[Non-text portions of this message have been removed]