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| Frog/Point Gap Insulation http://fast-tracks.net/forums/viewtopic.php?f=4&t=953 |
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| Author: | njallison [ Sat Dec 06, 2008 3:49 pm ] |
| Post subject: | Frog/Point Gap Insulation |
I was wondering if anyone has found it necessary to place an insulating material (like 0.05 styrene)in the gaps cut in the frogs and point rails...using the jewellers saw these are really small gaps. |
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| Author: | emccamey [ Sat Dec 06, 2008 10:07 pm ] |
| Post subject: | Re: Frog/Point Gap Isulation |
The gaps are positioned between two PC ties. There is little likelihood they will ever close up and short. Only gaps that are tied to wooden ties that are bound to the roadbed and substructure that can be affected by expansion and contraction due to humidity changes will need an insulator in the gaps. Any placement of gap filler is purely a cosmetic function with regards to the frogs for the turnouts (though that can be important for many). -ed- |
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| Author: | njallison [ Mon Dec 08, 2008 12:56 am ] |
| Post subject: | Re: Frog/Point Gap Insulation |
Ed Thanks for the responce however, having seen code 70 rail shift due to heat expansion I would like to know if anyone has had any problems with the small gaps cut by a jeweler's saw closing up. (I am well aware of were the gaps are cut and how the turnouts are made I've made about 2 dozen). njallison |
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| Author: | Marshal16 [ Sun Dec 14, 2008 5:04 pm ] |
| Post subject: | Re: Frog/Point Gap Insulation |
I use a .010 thou. blade in my jewelers saw and I CA a piece of styrene sheet in the gap and then trim it to the track profile when the glue is set. I just feel for all the time it takes it could save lots of trouble in future. It also makes the track smooth which eliminates problems when track cleaning. Roy. |
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