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s__truck
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Joined: Jan 02, 2006
Last Visited: Jan 24, 2006
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Posted: Mon Jan 02, 2006 8:27 am
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Dave
Nice job on the engine, that's a turbocharged 4-71 isn't it? Like they used on Blueburds?
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Fireman Dave
Chief Commissioner
Joined: Jan 12, 2003
Last Visited: Nov 22, 2008
Location: Probably Filthy McFaddens
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Posted: Mon Jan 02, 2006 9:18 am
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| s__truck wrote: | Dave
Nice job on the engine, that's a turbocharged 4-71 isn't it? Like they used on Blueburds? |
No, she's only a 3 cylinder (and no turbo), with patented crank derived motion for all cylinders. Her full classification is AB7401+.
Dave Malcolm
DRIVER, PN CMD
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monday
Chief Commissioner
Joined: Dec 31, 2003
Last Visited: Nov 16, 2008
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Posted: Tue Jan 03, 2006 8:22 am
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The bluebirds have two cummins NHHRS diesels on the traction side of things, but only a blown 3/71 on the genset (same as the traction unit in 7401)
"I know. Let's have everyone who enjoys having obstacles in their life, which they can overcome, go this way, and everyone whose insecurities sabotage their potential to overcome those obstacles go that way. "
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Duffy
Chief Commissioner
Joined: Oct 24, 2003
Last Visited: Nov 4, 2008
Location: ACT
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Posted: Sat Jan 07, 2006 8:50 pm
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As promised before crissy, pictures of that shy beast 7401!
http://andrewduffy.fotopic.net/c471903.html
Enjoy!
Please note that the loco is still in yellow undercoat. A livery of frieghtrail blue will hopefully soon be applied
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DavidB
Site Admin
Joined: Jan 11, 2003
Last Visited: Jan 25, 2007
Location: Canberra
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Posted: Sun Jan 08, 2006 5:24 pm
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Who will be taking the official photo for Motive Power? 
Does it have air brakes? I'm wondering if it could do a push-pull down the North Shunt with a single car.
Cheers
David
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Duffy
Chief Commissioner
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Last Visited: Nov 4, 2008
Location: ACT
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Posted: Sun Jan 08, 2006 5:29 pm
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| DavidB wrote: | I'm wondering if it could do a push-pull down the North Shunt with a single car.
Cheers
David |
Its done push pull on the loco siding with one of the track machines. Does that count?
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DavidB
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Location: Canberra
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Posted: Sun Jan 08, 2006 5:37 pm
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| Duffy wrote: | | DavidB wrote: | | I'm wondering if it could do a push-pull down the North Shunt with a single car. |
Its done push pull on the loco siding with one of the track machines. Does that count? |
I mean a single passenger car with passengers. The "brake van specials" with a small industrial loco (steam or diesel) and one or two brake vans were a feature of many preserved lines in the UK, and a cheap way of making money for the society. It would be an interesting alternative to running a CPH down the North Shunt.
Cheers
David
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monday
Chief Commissioner
Joined: Dec 31, 2003
Last Visited: Nov 16, 2008
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Posted: Mon Jan 09, 2006 7:48 am
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Perhaps, Perhaps, Perhaps...
Congratulations to all those involved in bringing 'the bone' back to life.
I was imagining 7401 hauling Set 52 up the Molonglo Gorge to Bungendary...
DavidB as you can see by the air hose (and the related delay volume cylinder), 7401 is air brake equipped!
"I know. Let's have everyone who enjoys having obstacles in their life, which they can overcome, go this way, and everyone whose insecurities sabotage their potential to overcome those obstacles go that way. "
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DavidB
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Posted: Mon Jan 09, 2006 8:35 am
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| monday wrote: | | I was imagining 7401 hauling Set 52 up the Molonglo Gorge to Bungendary... |
The GM 3/71 is rated at 51hp, so I doubt it.
| monday wrote: | | DavidB as you can see by the air hose (and the related delay volume cylinder), 7401 is air brake equipped! |
An air hose and compressor doesn't necessarily mean it has continuous automatic brakes, hence my question.
Cheers
David
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monday
Chief Commissioner
Joined: Dec 31, 2003
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Posted: Mon Jan 09, 2006 11:22 am
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Fully equipped and totally ticked with an A7 airbrake (much to the despise of all those who love the self-lapping B7 or 26L)... Some jokes have been made that we should upgrade her with the Wabco Wabpac Desk-Model Airbrake setup, like in the CLP's !!!
The 3/71 is heavily geared, the old Bone doesnt move very fast but she's got some power thats for sure.
"I know. Let's have everyone who enjoys having obstacles in their life, which they can overcome, go this way, and everyone whose insecurities sabotage their potential to overcome those obstacles go that way. "
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Duffy
Chief Commissioner
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Posted: Mon Jan 09, 2006 11:29 am
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Power she has! The way she hauled that dead track machine.......
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monday
Chief Commissioner
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Posted: Mon Jan 09, 2006 12:20 pm
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Fully equipped and totally ticked with an A7 airbrake (much to the despise of all those who love the self-lapping B7 or 26L)... Some jokes have been made that we should upgrade her with the Wabco Wabpac Desk-Model Airbrake setup, like in the CLP's !!!
The 3/71 is heavily geared, the old Bone doesnt move very fast but she's got some power thats for sure.
"I know. Let's have everyone who enjoys having obstacles in their life, which they can overcome, go this way, and everyone whose insecurities sabotage their potential to overcome those obstacles go that way. "
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DavidB
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Posted: Mon Jan 09, 2006 12:36 pm
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| monday wrote: | | Fully equipped and totally ticked with an A7 airbrake (much to the despise of all those who love the self-lapping B7 or 26L). |
If you really wanted an easy replacement, one of the type W brakes would seem logical. Used extensively on trams and NZR's Vulcan railcars.
| monday wrote: | | Some jokes have been made that we should upgrade her with the Wabco Wabpac Desk-Model Airbrake setup, like in the CLP's !!! |
What about a 30-ACDW?
Final obvious question is whether it has buffers and screw couplers. If so, is it worth taking something like the BVJ up and down the north shunt once a month as an alternative to a CPH? Should be cheaper to run than the CPH too as the engine is only half the size!
Would it need a TOC Waiver if it was confined to the north shunt or could you get away with a ROVA MECH?
Cheers
David
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monday
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Posted: Mon Jan 09, 2006 12:48 pm
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I think probably trying to re-invent the wheel, so to speak, would be too hard, i'd personally just leave it with the existing braking arrangements.
Besides, the operators dont really mind all that much, they are just used to driving quality 44's ..... and have been especially spoiled with the 442.
Screw couplers is the go. The fuel issue isnt really a biggy because the 6/71 doesnt really use all that much more than the 3/71.
The BVJ only gets used sparingly so the idea probably wouldnt be that well received from the powers that be with using it combined with 7401 on the north shunt. Besides, CPH37 does the job adeqately and provides a lot of novelty value.
I think ARTC would be horrified anyway if we started using it on the main line, it would be like taking out the victorian M class or V56 ! It would definately need a TOC waiver to take it out of the depot on the rails.
"I know. Let's have everyone who enjoys having obstacles in their life, which they can overcome, go this way, and everyone whose insecurities sabotage their potential to overcome those obstacles go that way. "
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Duffy
Chief Commissioner
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Location: ACT
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Posted: Mon Jan 09, 2006 2:06 pm
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| monday wrote: | | Besides, CPH37 does the job adeqately and provides a lot of novelty value |
Are we talking the actual CPH here or the novelty behind the controls? 
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