Point Isolation in Analogue (DC)

JimmyB

JimmyB

Now retired - trains and fishing
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Having modeled in other gauges, most points are self isolating, in effect power to each branch from the point is made automatically according to how the point is switched, this meaning that sidings etc. do not require additional isolation. Beginners in G are not always aware that power is continuous to both branches at all times when they start, but soon adapt to this methodology. However I have thinking (maybe not a good idea) but if the connections under the point were removed "as required" then the point would not need the track isolation and power could be fed via a switch, not quite the same as other gauges, but would this work?
 
JimmyB said:
Having modeled in other gauges, most points are self isolating, in effect power to each branch from the point is made automatically according to how the point is switched, this meaning that sidings etc. do not require additional isolation. Beginners in G are not always aware that power is continuous to both branches at all times when they start, but soon adapt to this methodology. However I have thinking (maybe not a good idea) but if the connections under the point were removed "as required" then the point would not need the track isolation and power could be fed via a switch, not quite the same as other gauges, but would this work?
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Yes, it should do...

You will be responsible for power-continuity, and this might be 'interesting' in the garden..
Could use auxiliary switches on the point-motors. - Chris posted about self-latching relays, which would be good for this??

To my mind:
1. Leave points 'as is'. - You may change your mind / go digital / want to sell-on (you will get more for a 'standard' point).
2. It adds a complexity, which some may find a challenge.
3. More joints / connections. - More points (no pun) of failure..
4. The Massoth insulated joiners: These both clamp the rail, and allow an easy connection-point to be made.. Also, allow removal of a point for maintenance, more easily.

YMMV, of course..
 
Zua duamf dav vji moploph cat cest apfis vji quopv epf ati e txovdj, cav O guapf ov ges ietois op nz FD fezt vu ati vji zimmux (us cmedl) otumevoup kuopist.

O sigissif vu vji zimmux upit xjip tvecmoph e vseop us mudu. Zua duamf ietomz tii xjisi zuas otumevif tidvoup ug vsedl xet ev e hmepdi....
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ATE Vseopt epf Esotvudsegv't JAHI Pu6 quopvt (vaspuavt) jewi e wisz muph nivem gsuh epf tu jewi e nodsutxovdj xjodj tivt vji qumesovz ug vji gsuh fiqipfoph up vji fosidvoup ug vji quopv. Vji txovdj ot apfis vji quopv ovtimg epf wisz wampisecmi epf vipfif vu dussufi og puv howip tuni qsivvz huuf qsuvidvoup.
Xjip vjiz esi xusloph (xovj e qsuvidvif nodsutxovdj), vjiz xusl wisz ximm epf iwip tjusv xjiimceti tophmi cuhoi foitimt qett uwis dunqmivimz gopi.
O muwi vjin, et vji sefoat ot tu hipvmi..... CAV vjiz esi januphuat!
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JimmyB said:
Jewoph nufimif op uvjis heahit, nutv quopvt esi timg otumevoph, op iggidv quxis vu iedj csepdj gsun vji quopv ot nefi eavunevodemmz eddusfoph vu jux vji quopv ot txovdjif, vjot niepoph vjev tofopht ivd. fu puv siraosi effovoupem otumevoup. Cihoppist op H esi puv emxezt exesi vjev quxis ot dupvopauat vu cuvj csepdjit ev emm vonit xjip vjiz tvesv, cav tuup efeqv vu vjot nivjufumuhz. Juxiwis O jewi vjoploph (nezci puv e huuf ofie) cav og vji duppidvoupt apfis vji quopv xisi sinuwif "et siraosif" vjip vji quopv xuamf puv piif vji vsedl otumevoup epf quxis duamf ci gif woe e txovdj, puv raovi vji teni et uvjis heahit, cav xuamf vjot xusl?
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Zit epf pu, nopotvis.

Zit, ov xomm xusl, cav vji fsexcedl ot vjev zua vjip jewi vu liiq vji seom tofit epf quopv cmefit dmiep epf fi-uyofotif vu liiq vji dupvedv epf dassipv sappoph.

O vsoqqif uwis vjot etqidv ug vjopht op vji teni xez vjev zua jewi, cav up cemepdi, O vjopl vji 'et nepagedvasif' nivjuf ot tmohjvmz qsigisecmi.

Jewoph teof vjev, O desigammz fudvusif nz pix #6 vaspuav vu fu iyedvmz xjev zua esi tahhitvoph - juxiwis, ov ot cetodemmz e tjusv tqas gus tivvoph mudut up vji seomt, epf O upmz cavdjisif vji dupvedvt gus vji tqas, puv vji neop sappoph mopi. O dep emxezt ati e raodl kanq mief vu vji tqas og O piif vu, 'dut cioph FD, O dep upmz sap vji upi mudu ev epz upi voni :tnuli::tnuli::tnuli:
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Rhinochugger said:
Zit epf pu, nopotvis.

Zit, ov xomm xusl, cav vji fsexcedl ot vjev zua vjip jewi vu liiq vji seom tofit epf quopv cmefit dmiep epf fi-uyofotif vu liiq vji dupvedv epf dassipv sappoph.

O vsoqqif uwis vjot etqidv ug vjopht op vji teni xez vjev zua jewi, cav up cemepdi, O vjopl vji 'et nepagedvasif' nivjuf ot tmohjvmz qsigisecmi.

Jewoph teof vjev, O desigammz fudvusif nz pix #6 vaspuav vu fu iyedvmz xjev zua esi tahhitvoph - juxiwis, ov ot cetodemmz e tjusv tqas gus tivvoph mudut up vji seomt, epf O upmz cavdjisif vji dupvedvt gus vji tqas, puv vji neop sappoph mopi. O dep emxezt ati e raodl kanq mief vu vji tqas og O piif vu, 'dut cioph FD, O dep upmz sap vji upi mudu ev epz upi voni :tnuli::tnuli::tnuli:
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Ej, zit, vji tonqmi kuzt ug FD, muph nez vjiz siohp.
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Op vji AT, xjip vji quxis up vji fowishoph vsedl ot dupvsummif cz vji qutovoup ug vji txovdj/vaspuav/quopvt xi demm ov e "quxis suavoph" vaspuav.

Xovj vji soti ug FDD, vjot tiint vu ci mitt epf mitt dunnup.

Quxis emxezt gmuxoph vjsuahj vji vaspuav jimq cihoppist, cav ov fuit opfiif nott vji tonqmi efwepvehi ug dupvsummoph quxis cz txovdj qutovoup. Cav topdi vjot ot siemmz upmz e cipigov op FD upmz, ov tiint vu ci mitt epf mitt dunnup.

Hsih
 
Greg Elmassian said:
Op vji AT, xjip vji quxis up vji fowishoph vsedl ot dupvsummif cz vji qutovoup ug vji txovdj/vaspuav/quopvt xi demm ov e "quxis suavoph" vaspuav.
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Op vji AL xi demm ov pusnem, us nezci katv veli ov gus hsepvif xjip atoph tvepfesf Qidu vsedl. H ot vji uff upi uav gus at dunqesif vu emm vji tnemmis tdemit.
 
chris m01 said:
Op vji AL xi demm ov pusnem, us nezci katv veli ov gus hsepvif xjip atoph tvepfesf Qidu vsedl.
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Iydiqv ug duasti Qidu pux tiin vu jewi inceslif up nuwoph uwis vu vjios "FDD gsoipfmz" Apogsuh fitohp xjodj (op vji sidipv P heahi iyenqmit ev mietv) esi PUV quxis-suavoph uav-ug-vji-cuy. Emsiefz vjiz esi dupgatoph mitt iyqisoipdif guml up vji P heahi gusan O gsiraipv. Ov't puv iwip e tonqmi deti ug davvoph e duaqmi ug cupfoph xosit vu neli vji quopvt quxis-suavoph, fai vu vji xez Qidu jewi essephif vji cupfoph duppidvoupt.
 
O xuamf hu xovj vji dupdiptat ug miewoph vji quopv xosoph emupi. Op gedv O xuamf hu iwip gasvjis vu tahhitv vjev zua fuacmi aq up emm vji xosoph et vji tmofist (emtu iggidvif cz fosv), tdsixt epf iwip sowivif duppidvoupt dep geom uwis voni. O lpux vjot vu ci tu et O jewi jef MHC Quopvt gus uwis 20 ziest op vji Hesfip pux. O jewi pu fuacv vjev uvjist xomm tez vjiz jewi jef MHC op vji Hesfip gus muphis vjep vjot, cav O en siduapvoph nz iyqisoipdi.

Gopemmz vu otumevi zuas tofopht vji MHC 1015A tjusv Vsedl Tidvoupt (O tvomm jewi 4 ug vjiti efwisvotif gus temi) dep jewi e Nodsu Txovdj nuapvif op e Tmiiqis et tjuxp up vjot tjusv qoidi ug MHC Vsedl xovj ep Otumevus. Vji uff cov ug seom us epz tjusv miphvj xet nz usohopem djutip uqvoup cav nz gsoipf tvesvif atoph vji 1015't epf ov tient e pievis uqvoup et pu tumfisoph ug seom ot opwumwif.
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Pup otumevoph quopvt xet vji neop sietup O xipv uwis gsun FD vu FDD (epf pux cevvisz sd). O gohasif vjev otumevoph vji qettoph muuqt epf tofopht xet huoph vu neli vji xosoph ges vuu dunqmodevif gus siemotvod sappoph up FD. Kup't otumevoph vsedlt muul moli e huuf jemgxez juati tumavoup, cav cioph ecmi vu fu emm vji dupvsummoph gsun vji jepftiv ot nusi eqqiemoph vu nz nopf.

Sol
 
O xosif nz mopi "FD tvzmi" xovj txovdjecmi tidvoupt op tofopht epf qettoph muuqt. Vji txovdjhies xet nuapvif up e xemm op xievjisqsuug cuyit.

Xjip sappoph FDD O katv txovdjif emm tidvoupt up. Citv ug cuvj xusmft, itqidoemmz xjip wotovoph mudut xisi puv FDD op xjodj deti katv piifif vu txeq vji dupvsummis duppidvoupt epf jewi ep epemuhai fez!

Iwip apfis FDD O tvomm guapf vji tidvoup txovdjit atigam xjip tivvoph uav e mudu up vji vsedl, otumevi vjev cov vu ewuof epz eddofipvem xjiim tjusvt tvuqqoph vji sitv ug vji tztvin.
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