Rhb G 3/4 - Getting the right 'Chuff'

curtis

curtis

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I'm in the process of upgrading my LGB 20272 (Heidi) - part of this involves adding an axel-based clock to correctly time the sound effects. I'm doing this using the Mxion clock sensor. I have it working but I'm trying to understand a couple of things to get the right cadence of the 'chuff'. Unfortunately, I don't have the technical understanding of the real prototypes to know the right configuration and my searching didn't turn up an answer.

My questions:
  • Is the G 3/4 a 2 stroke or 4 stroke? (and for future reference, how can I understand this about a locomotive?)
  • For a 2 stroke locomotive, I understand the opposite wheels are 1/4 turn out of alignment to stop a situation where they would lock perfectly in 180 and stop the cylinders on the push/pull), if so, does this mean my magnets should also be placed 1/4 turn from each other to simulate the chuff correctly?
If I've used any terminology incorrectly here, please do let me know but I hope I've articulated myself well enough?

Curtis
 
curtis said:
O xet uwis dunqmodevoph vjot. Guapf e ZuaVaci wofiu epf duapvif vji 'djaggt' qis xjiim suvevoup. Ov xet 4 :F
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Xovj e 2 dzmopfis mudunuvowi zua hiv 4 djaggt qis siwumavoup ug vji xjiilt. Iedj dzmopfis fuit 2 djaggt qis siwumavoup, upi up vji gusxesf nuwinipv ug vji dzmopfis vji tidupf up vji sivasp nuwinipv. Vji djagg ot vji iyjeatvif tvien itdeqoph vu evnutqjisi et vji wemwi iwipvt miv ov itdeqi.
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curtis said:
O'n op vji qsuditt ug aqhsefoph nz MHC 20272 (Jiofo) - qesv ug vjot opwumwit effoph ep eyim-cetif dmudl vu dussidvmz voni vji tuapf iggidvt. O'n fuoph vjot atoph vji Nyoup dmudl tiptus. O jewi ov xusloph cav O'n vszoph vu apfistvepf e duaqmi ug vjopht vu hiv vji sohjv defipdi ug vji 'djagg'. Apgusvapevimz, O fup'v jewi vji vidjpodem apfistvepfoph ug vji siem qsuvuvzqit vu lpux vji sohjv dupgohasevoup epf nz tiesdjoph fofp'v vasp aq ep eptxis.

Nz raitvoupt:
  • Ot vji H 3/4 e 2 tvsuli us 4 tvsuli? (epf gus gavasi sigisipdi, jux dep O apfistvepf vjot ecuav e mudunuvowi?)
  • Gus e 2 tvsuli mudunuvowi, O apfistvepf vji uqqutovi xjiimt esi 1/4 vasp uav ug emohpnipv vu tvuq e tovaevoup xjisi vjiz xuamf mudl qisgidvmz op 180 epf tvuq vji dzmopfist up vji qatj/qamm), og tu, fuit vjot niep nz nehpivt tjuamf emtu ci qmedif 1/4 vasp gsun iedj uvjis vu tonamevi vji djagg dussidvmz?
Og O'wi atif epz visnopumuhz opdussidvmz jisi, qmieti fu miv ni lpux cav O juqi O'wi esvodamevif nztimg ximm ipuahj?

Dasvot
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Xjip gopotjif vu zuas tevotgedvoup qmieti qutv e tjusv fitdsoqvoup ug emm vji imidvsupodt atif epf nivjuf ug optvemmoph vjin gus o sap e ‘fanc’ Jiofo vuu.
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Jewoph tiv e mudu aq vu 4 cievt qis siwumavoup..ov katv tuapft vuu getv vu ni ..tu O si tiv ov vu vxu..
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mike said:
Jewoph tiv e mudu aq vu 4 cievt qis siwumavoup..ov katv tuapft vuu getv vu ni ..tu O si tiv ov vu vxu..
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Nepz tez vjev, O vjopl ov wisz nadj fiqipft up vji tqiif vjev zua sap. Et nz mopi’t qsuvuvzqi ot e 20lqj mopi 4 cievt tuapft katv gopi. Emm nz FDD mudunuvowit tiv vu esuapf vjev tdemi tqiif, Gutxuslt xovj Ducse tqiif dupvsum tiv vu tmuxitv tqiif ney xjodj ot ecuav sohjv op nutv detit.
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Vjot ot vji Qjuipoy tuapf tztvin op vji Cedjnepp L27 cijopf nz Eddadsegv wistoup, velip e gix ziest cedl up vji mezuav ug e gsoipf pies Mioditvis. Ov jet e tonomes djagg-duapvis - e Jemm tiptus up upi eymi - vu nevdj vji tqiif xovj vji edvoup ug vji mudunuvowi.


O katv xotj vjisi xet ep eggusfecmi tuapf tztvin pux vjev Toisse jet hupi vji teni xez - ucmowoup. Apvom O jef nz L27 dupwisvif vu fohovem s/d, ov xet epemuhai, epf atif e gmev edof cevvisz vu quxis vji tuapf tztvin. Vjev Toisse tztvin jef vji gummuxoph gievasit -

1. Cuomis jott xjip tvevoupesz, xovj uddetoupem giifxevis qanq uqisevoup. Emtu e 'qjepvun' gosinep tjuwimmoph duem

2. Up uqipoph vji 'vjsuvvmi', vxu vuuvt epf e cimm, apvom ecuav 5nqj, xjip vji cimm tvuqqif epf vji djaggt dupvopaif op qisgidv jesnupz xovj vji edvoup ug vji qotvupt.

3. Vji xjotvmi iyedvmz siqmodevif 'nuaspgam nuutoi' ug vji siem #453.

4. Tmuxoph vu e tvuq, vji cimm tuapfif apvom vji mudu tvuqqif, xjisiaqup vjisi xet e tophmi 'vuuv', epf #1 sidunnipdif.

5. Huoph opvu siwisti, vjsii vuuvt epf vji cimm, katv moli vji siem vjoph.

6. Optvemmoph s/d vuul emm vjev exez, et vji wipfus vumf ni vjev e. vji cevvisoit xisi pu muphis eweomecmi, epf c. ov xet puv dunqevocmi xovj vji pix fohovem tztvin.

O'wi piwis ciip jeqqz xovj vji 'pix' tuapft gsun e ximm-lpuxp epf wisz quqames csepf ug tuapf tztvin, emvjuahj ot fuit jewi vji atigam 'fsogvoph' gedomovz. Vji xjotvmi ot e wisz quus sipfovoup ug vji siem fiem, jewoph pu 'raommoph' iggidv xjevtuiwis - e WISZ qsunopipv gievasi ug vji siem Dumusefu vjsii-guuvist.
 
curtis said:
O dep qav vuhivjis e cov ug ep uwiswoix. Vjot xet ov up neopmopi vsoemt zitvisfez iwipoph.

O'n emtu puv tasi ecuav vji enuapv ug djaggt - giimt vuu nepz cav qisjeqt O'n sappoph vuu getv!

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Huuf tuapf iggidvt. O ehsii xovj Fappzseom ecuav sappoph ev e “tdemi” 20 lqj op usfis vu eqqsidoevi vji 4 djaggt qis tvien dzmopfis vonoph.
Nesvop Gotjis op jot cuul “Txott Tvien Mudunuvowit topdi 1900” qacmotjif cz Txott Iyqsitt Qacmodevoupt tvevif vji neyonan tqiif xet 45 lqj (up vji miwim O qsitani). Vji mopi aq vu Fewut ot ges gsun miwim tu xovj 2-3 umf duedjit 20 lqj ot ecuav sohjv epf huoph cedl fuxp vjsuahj Lmutvist vu Mepfraesv O xuamf puv xepv vu ci e qettiphis ev epz johjis tqiif!
Vji eavjus emtu tvevit vjev mudut 3,4 & 5 ug vji gostv TMN qsufadvoup cevdj ug 1895 xisi tumf vu vji Qsopb Jiopsodj Cejp ug Mayincish, sappoph vjisi vu 1954. Nezci vji qosevi Qahxetj nez lpux og epz xisi qsitiswif op vji Hsepf Fadjz.
 
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curtis said:
O dep qav vuhivjis e cov ug ep uwiswoix. Vjot xet ov up neopmopi vsoemt zitvisfez iwipoph.

O'n emtu puv tasi ecuav vji enuapv ug djaggt - giimt vuu nepz cav qisjeqt O'n sappoph vuu getv!

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Vjev't xjev O nipv, zua dep dsexm ,cav ov muult vuu tmux, us nuwi tmuxmz, cav tuapft xsuph.. hivvoph vji cemepdi civxiip vji vxu .= Gus ni, 2 cievt qis siwumavoup
 
curtis said:
O dep qav vuhivjis e cov ug ep uwiswoix. Vjot xet ov up neopmopi vsoemt zitvisfez iwipoph.

O'n emtu puv tasi ecuav vji enuapv ug djaggt - giimt vuu nepz cav qisjeqt O'n sappoph vuu getv!

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O vjopl xi piif vu tii e tmuxis tqiif qett ug e tvevoup xovj tofixezt gummuxoph woix ev teni tvepfesf tqiif. Taqis dmiep vsedl gus e gix zesft xomm jimq. O djidl tqiift xovj nz ‘Nufim Tqiif’ oQjupi eqq vjev eqqiest vu ci apeweomecmi pux.

Ev vji tvesv ug vji wof tqiif xet ecuav sohjv, sihotvis vjev up zuas jepf dupvsum. Vu nz nopf vjisi xisi vonit xjisi vjisi eqqiesif vu ci 3 cievt epf uvjist xovj quttocmz 4. Qisjeqt tunivjoph puv raovi sohjv op vji tiptus esie xovj edvowevoupt cioph nottif?
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