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Author Topic: Slow speed running - some test results  (Read 2173 times)

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Offline Dr Al

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Re: Slow speed running - some test results
« Reply #30 on: November 11, 2016, 11:00:57 am »
Everything I've tested was recently purchased new.

Sure, just worth checking it wasn't some new-old stock - the original motors were much more sticky than the later ones, so unlikely to give the performance you describe!

Cheers,
Alan
Quote from: Roy L S
If Dr Al is online he may be able to provide a more comprehensive answer.

Offline longbow

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Re: Slow speed running - some test results
« Reply #31 on: December 02, 2016, 06:33:47 am »
Data for latest fleet additions:

Farish Merchant Navy 372-311 - slowest sustained speed 0.8mph, top speed n/a.
Farish Warship 370-070a -  slowest sustained speed 0.6mph, top speed 187mph.

 As for previous data, results are on completion of recommended running-in period, on clean 11" test circle, using Gaugemaster DC Combi controller.


Offline longbow

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Re: Slow speed running - some test results
« Reply #32 on: February 27, 2017, 03:03:26 am »
Slowest sustained speeds for latest additions.

Dapol Hymek - 0.7mph
Farish 4MT Tank - 0.9mph
Another N Mogul - 5.7mph (identical to the first)
Dapol 57xx - 12.4mph (second hand)

As for previous data, results are on completion of recommended running-in period, on clean 11" test circle, using Gaugemaster DC Combi controller.

« Last Edit: February 27, 2017, 03:31:41 am by longbow »

Offline longbow

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Re: Slow speed running - some test results
« Reply #33 on: April 30, 2017, 08:50:56 am »
I have just started to DCC my fleet with the Zimo MX622N chip and it is certainly making a big difference to the mediocre runners. My Farish 5MT on DC managed a slowest sustained speed of 5.7mph. On DCC, and with only a preliminary tuning of the motor settings, that has dropped to 1.5mph.  The stall speed of my Dapol Class 121 has fallen from 7mph to 1.1mph.  

Offline Waz

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Re: Slow speed running - some test results
« Reply #34 on: May 01, 2017, 10:29:41 am »
He slowest running loco I own is my Class 66 which running on my rolling road will happily crawl along as a scale 0.5mph. And it will achieve this also running on a clean layout. However I did spend a lot of time setting up the decoder in it and I also feel it may have something to do with the quality of the CJM chassis.

Offline longbow

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Re: Slow speed running - some test results
« Reply #35 on: May 01, 2017, 12:12:39 pm »
Slowest sustained speeds for latest additions. Once again Dapol steamers show exemplary (albeit noisy) slow running.

Union Mills T9 - 5.3mph
Farish Class 47 - 0.4mph
Dapol 38xx - 0.3mph
Dapol Pendleton Hall - 0.2mph

As for previous data, results are on completion of recommended running-in period, on clean 11" test circle, using Gaugemaster DC Combi controller.

Offline longbow

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Re: Slow speed running - some test results
« Reply #36 on: May 22, 2017, 08:34:01 am »
Slowest sustained speeds for latest additions. As for previous data, results are on completion of recommended running-in period, on clean 11" test circle, using Gaugemaster DC Combi controller.

Farish King - 0.2mph. Exemplary!
Farish Warship - 1.1mph, very good though my other Warship managed 0.6mph
Dapol Class 52 - 12.4mph. As much of a nail on DC as its stablemate - but see below.

I have already remarked that running my poor performers on DCC has transformed their slow running abilities and so it proved with the Class 52, which on DCC improved its slowest speed from 12.4mph to only 0.2mph! This was achieved with a mid-range DCC23 decoder with default motor settings and shunting speed selected, rather than the more sophisticated Zimo MX622N I am now fitting as standard.

 

Offline longbow

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Re: Slow speed running - some test results
« Reply #37 on: August 04, 2017, 11:47:19 pm »
As a further illustration of the performance benefits of DCC, the slowest sustainable speed for my Dapol M7 has dropped from 8.3mph to 0.4mph after fitting a CT DCX77zN decoder.

 

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