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Discussion Starter · #1 ·
Hi all

Hopefully a quick question

The instructions for Peco OO Gauge electrofrog points show how to modify them to power the fog, ie using bridging wires and cutting links etc but their instructions for the N gauge versions make no mention of these modifications

Are the n gauge versions modified in the same way or is there a different option needed.

I have had a look at were the link wires should be and cannot see how to cut the link without doing terminal damage.

Thanks for any help with this

Paul
 

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Or that information from DCC Concepts may not help much as it doesn't discuss the Peco N turnouts in any detail.

Peco turnouts in N work as supplied, but they rely on blade contact with the fixed rail to power the frog. Some people find this unreliable over time, particularly if they've been sloshing glue and paint around without a lot of care to ballast or weather the turnout.

***IF*** you want to use power-routing to the frog through an external switch, **AND** want reliable operation you must modify the turnout.

If you don't cut the rails, then there are two switches powering the frog - the blades and the external power-routing switch. Chance of both moving at exactly the same time is very low, and if they move at different times there is a temporary short circuit through the entire DCC system, which should cause the DCC system to shut down. Not a good thing, and not what most people want !

So, cutting the rails is needed, its a tricky job though quite do-able, requiring a fine saw blade (I'd use a piercing saw), careful clamping of the turnout and patient cutting.

- Nigel
 

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Discussion Starter · #4 ·
Any chance of posting a couple of photos showing a N Gauge point modified so I know were to cut and were to connect the frog power to.

do you also connect the moving blade to outside rails as in the OO Gauge mod or do something else

Thanks
 

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QUOTE (Paul-H @ 18 Nov 2017, 09:43) <{POST_SNAPBACK}>This video shows what's needed tomoz n gauge points, all in German but easy to follow what's being done


Apologies for dragging up an old thread.

Thanks for that video Paul. I'd seen it before but lost the bookmark.The cut rails and the bonding of the rails underneath looks very similar to what Peco are doing with the new Unifrog points.

Do you need to do the same thing with the 3-way points (SL-E399F)? They're quite a lot more complex than the normal straight/curved electrofrog points and it isn't entirely obvious if anything needs doing.
 

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It looks like the N scale 3 way is the same as its big 00/H0 brother needing separate frog switching and I did bond the blades to adjacent stock rails so the blades did not rely on blade to stock rail contact, so I guess it can be done in N scale as well, though there is less room to do so.
 
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