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Posted - January 22 2008 : 01:20:59 AM
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Hey Guys:
This of all my locomotives, is my Favourite:

It is the only piece I have left from my youth. I bought it in 1972 I think it was for $25. I still have the original box as well.
Last year the chassis went off to Ron LaFever in Paris, Texas for a rebuild and upgrade. The improvements include:
CHASSIS CONFIGURED TO YEAR 2001 SPEC'S. DRILLED/MILLED FOR HARDWIRING. (MDC had upgraded)
REGEARED WITH STOCK MDC GEARS.
ALL PARTS SMOOTHED AND POLISHED. PRECISION ASSEMBLED.
GEAR HOUSING SHAVED FOR CLEARANCE OF 321 MAGNETS, ROAD CROSSINGS, ETC.
ENGINEERING PLASTIC PROBLEM RESOLVED.
HIGH-TORQUE CAN MOTOR INSTALLED, MOTOR IS BRUSHLESS, SELF-LUB'D FOR LIFE.
MOTOR ISOLATED FROM FRAME - DCC COMPATABLE. A DECODER SHELF IS PROVIDED.
CUSTOM NWSL PRECISION BRASS FLYWHEEL INSTALLED.
NWSL #29 GAUGE (51 STRAND) SUPER FLEX STRANDED WIRE USED TO PROVIDE EIGHT- WHEEL POSITIVE VOLTAGE PICKUP.
EXTRA WIRE-LENGTH IS PROVIDED TO EASE MAINTENANCE AND LUBRICATION - EXTRA WIRE LENGTH TAPED TO MOTOR
JACKSHAFT WORM GEAR DIAMETER OF .310, .005 ABOVE MDC MINIMUM SPECS, FOR POSITIVE EIGHT WHEEL DRIVE.
BACKLASH IN BOTH TRUCKS EQUALIZED TO MAINTAIN FIRM CONTACT WITH AXLE GEARS
CHASSIS WILL CRAWL THROUGH PLASTIC FROG TURNOUTS AT LESS THAN 0.3 SCALE MPH.
TWO-OUNCE + TOTAL WEIGHT ADDED - (1.25 OZ ON CHASSIS, .75 ON SHELL) 25.O % TOTAL INCREASE. WEIGHT DISTRIBUTION CENTERED OVER BOTH TRUCKS.
KAYDEE #58 TRUE SCALE MAGNETIC COUPLERS INSTALLED
TWO YEAR GUARANTEE
Mine was the last one Ron LaFever built! He's now retired.
****LAFEVER CLIMAX REVIEW****
5 July, 2002 LAFEVER STANDARD CLIMAX PRODUCT REVIEW "AUSTINS DAD'S Toys and trains", Roger Edison owner. Member: Gulf Coast Society of model Railroaders, NMRA. Product review - the LaFever Climax, custom made by Ron LaFever.
Ron sent me a sample of his MDC Climax for testing. It is a custom built die cast frame with modified motoring, gearing and body shell THAT WILL EXCEED the performance of almost any other logging locomotive available. Ron's complete Climax weighs almost 2-ounces more than a stock MDC Climax - an almost 25% weight increase, yet with room for a DCC decoder and a sound card. I like Ron's work. It is well done. But then, Ron holds a degree in both Mechanical and Electrical Engineering so you expect great work. Using a Tech II transformer power supply I watched it run smooth at every level of speed. Surprising to me, when I had the power pack set at 10% I could count the lines on the flywheel turning about 9 lines per minute - which means that sometime tomorrow this might complete it's way around the track. It was moving so very, very slow. At 25% on the power pack it moved in a slow, realistic, smooth and quiet way. However, at 50% - where a Bachman three-truck Shay, Rivarossi's Heisler and MDC Shays reach their maximum speed - Ron's Climax continued to go faster and much stronger than the stock or Brass locomotives previously tested. The throttle response is very linear. I don't need a stop watch and chart to know that the motoring and re-gearing is much more than an improvement, but makes this climax a true dream when it comes to climbing hills with 25 log cars which are slightly weighted over NMRA standards. The incline grade was remarkable as I tilted the layout with blocks. The Climax continued to pull superbly, but didn't go running off when it reached the top. Testing showed it handled 18-inch curves easily, yet I bet it could handle tighter curves. All the plus marks this loco received out weighed the one black mark of noise at higher speeds. At slow speeds there is no sound problem. If the noise at higher speeds bothers some one they should add a MRC sound system to their layout to cover any unwanted noise. This is a great engine, a superb-operating piece of equipment. This custom engine easily handled over 25 logging cars climbing over a 6% incline - exceeding the utmost steepest mountains expected on just about any layout. In appearance it shows superior weathering skills and added detail parts to the modified MDC Climax body. Fine Brass engines meeting this custom quality exceed $300, which makes Ron's Climax a bargain. It will likely be the best performing locomotive you'll ever own for your logging, maintenance-of-way or old time yard switching. This performance test clearly showed it will out perform the Bachman (3) truck Shay, MDC Climax and shay products and PFM Brass Shays that have ever been previously tested by Austindad''s. NOTE: Ron will not get his sample back - I bought it. July 13, 2002 Ron - today I operated the LaFever Climax at 30% throttle for 7 non-stop hours. It was pulling a total of 27 log cars along a 46' x 12' track with only a 1% incline. It operated smoothly with perfect operation with no problems. After 7 hours of continuous running the motor was barely warm to the touch. I'm extremely pleased. Roger Edison

Hope you enjoyed this.
Post away....
Edited by - romcat on January 24 2008 03:07:44 AM
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Posted - January 22 2008 : 1:47:15 PM
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This is an MDC Climax I rebuilt.
Ray
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Posted - January 22 2008 : 2:20:03 PM
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Hey Ray:
So what did you do on the rebuild?
-Gareth
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Posted - January 22 2008 : 3:23:01 PM
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Here's a link to a thread where I posted some photos of the Climax rebuild and also a boxcab drive I modified. http://2guyz.info/Forums/viewtopic/t=2095.html
Ray
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Posted - January 22 2008 : 4:26:15 PM
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OK, I can see the machining for the sake of machining but WHY use a CD motor? You muct have several "junk" motor's kicking around? Sure as hell your belt drive version must be quieter than the original Roundhouse one.
-Gareth
PS: Hey Ray ever thought about doing a NYC Shay "Dummy"? Ever seen one?


Love the odd stuff!
-G
Edited by - romcat on January 24 2008 02:05:33 AM
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Posted - January 24 2008 : 11:15:41 AM
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quote: You muct have several "junk" motor's kicking around?
Originally posted by romcat - January 22 2008 : 3:26:15 PM
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Yea, I have all kinds of "junk" motor's kicking around. I figured if I used one then I would hear the motor noise since the gear noise would be gone. The CD motor makes no noise at all. I have seen the Dummy shay,(can't figure out why they call it that) I had thought it would make an easy N scale Shay model since all the hardware is hidden.
Ray
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Posted - January 25 2008 : 12:36:47 AM
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Hey Ray,
Got a question regarding that CD motor: What voltage is it listed for? Your photo looks like it says 5.9 volt. If that is true, how does it work at 12 volt? Also, where did you get that motor?
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Posted - January 25 2008 : 01:18:33 AM
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Yeah I had the same thought! [:D]
-Gareth
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Posted - January 25 2008 : 12:04:12 PM
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The motor is 5.9V and was taken out of a CD ROM from an old computer. I just don't run it at full throttle. I have put voltage reduction circuits in a few locos using Zener diodes too.
Ray
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Posted - January 25 2008 : 12:12:19 PM
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Hey Ray:
So the diodes act as a resister?
Whats the throttle response like? As a CD-Rom motor it's stepping motor right, so on throttle up is the response linear?
-Gareth
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Roy
Little Six
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Posted - January 25 2008 : 5:56:09 PM
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quote:...I have seen the Dummy shay,(can't figure out why they call it that)... |
I think the usage is the same as a steam dummy, which was a steam loco used to pull city horsecar trailers. They had a streetcar body, so as not to spook nearby horses.
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Posted - January 25 2008 : 7:53:56 PM
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quote:Hey Ray:
So the diodes act as a resister?
Originally posted by romcat - January 25 2008 : 11:12:19 AM
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The Zener diodes limit the voltage to the motor. I'd have to draw a schematic to show you. There are a few ways to do it. On way, From 0-6v of your power pack is used by the motor. Once the voltage reaches the rated voltage of the Zener diode (6v in this case) any additional voltage is dissipated through a resistor. The other way, the first 0-6v is blocked by the Zener diodes from the motor (this voltage can be used for constant intensity lights) and the motor uses 6v and above from the power pack.
quote: Whats the throttle response like? Originally posted by romcat - January 25 2008 : 11:12:19 AM
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The drawback is that you are only using half the throttle and throttle response can be touchy with low end power packs. I am working on an on-board PWM circuit but haven't gotten it all figured out yet.
quote: As a CD-Rom motor it's stepping motor right, so on throttle up is the response linear?
-Gareth
Originally posted by romcat - January 25 2008 : 11:12:19 AM
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The CD-Rom motor is the motor that opens the CD tray, not the one that spins the CD.[:p]
Ray
Edited by - Ray Marinaccio on January 25 2008 8:04:29 PM
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Posted - January 25 2008 : 8:07:36 PM
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quote:quote:...I have seen the Dummy shay,(can't figure out why they call it that)... |
I think the usage is the same as a steam dummy, which was a steam loco used to pull city horsecar trailers. They had a streetcar body, so as not to spook nearby horses.
Originally posted by Roy - January 25 2008 : 4:56:09 PM
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Oh, OK, It is a dummy horsecar trailer or streetcar instead of a dummy locomotive. That does make sense.
Ray
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Roy
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Posted - January 25 2008 : 8:45:55 PM
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Posted - January 25 2008 : 9:01:01 PM
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That's neat. Now I have to build one.[;)]
Ray
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Posted - January 25 2008 : 11:42:54 PM
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Hi Ray:
I was wondering about which motor because traditionally spinning devices in compuyers run on 12V...
-G
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