BIG JERR Thanks Randy for explaning that QSI thing ,but PAGE 205 are you joking ,I down loaded the manual for the psunami and it cleaned out an ink cartrage ...
Thanks Randy for explaning that QSI thing ,but PAGE 205 are you joking ,I down loaded the manual for the psunami and it cleaned out an ink cartrage ...
Big Jerr, in "My Documents", make a new folder and title it "Decoder Manuals". Go to the website, find the manual(s) that pertain, and download them. Right click and "Save as" the title to the new "Decoder Manuals" file you just created. No paper, no ink, no worn out/smoking printer. Just a few clicks of the mouse away, you use the cursor scroll feature to scroll down to the pages you need, and you're there.
BTW, most manuals have the DC usage portion included because the modern decoders are dual mode for both DC/DCC ops. I just tell the printer, if I really do want a hard copy, to print the pages from page XX to page XY, which nets you the marrow you seek and less expense.
Crandell
Just read on the computer, I NEVER print out that stuff, ink costs too much and so do trees.
I don;t have any QSI locos but I would probably set mine on RTC. I don't have any grades, either, so my main purpose would be to get the best slow speeds. That's what I like about TCS decoders, the BEMF can be programmed to go away as you go faster, so you only have BEMF to crawl around in the yard - slow enough to see the couplers open and latch, but no cruise control at road speed.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
Thanks Randy for explaning that QSI thing ,but PAGE 205 are you joking ,I down loaded the manual for the psunami and it cleaned out an ink cartrage but page 205, wow .very helpfull info all kidding aside.
So randy what is your choice for a setup on the 4 that QSI gives ya ? ..thanks Jerry
That's not totally correct. QSI decoders have FOUR speed control modes. Standard is like and non-BEMF decoder. Motor gets a percentage of power based on throttle setting, if it moves it moves.
Speed Control is the cruise control one - Set the throttle to step 50, loco gots 50smph regardless of grades, loads, or whatever.
Load Compensated BEMF is the typical 'standard' BEMF in other decoders, for a given throttle setting the decoder will try to maintain a set motor speed, with adjustable parameters for the feedback equation.
Regulated Throttle Control or RTC isn't cruise control, the loco will slow goign up hill and speed up going down hill. There are some adjustable parameters - it should NOT be jeryk and consisting more than one QSI loco when both have RTC turned on should eb smooth and in fact probably not need any actual tuning for speed matching.
Starting on page 205 of the latest full manual from the QS Industries site tells you about these different options and how to configure them.
BIG JERR so what is the bemf equill for QSI ?
so what is the bemf equill for QSI ?
QSI, except for the very first Hudsons, have a sort of "cruise control" that you have to turn on and off. It's not like most decoders where the BEMF is on to a greater or lesser extent all the time. When you get the engine up to the speed you want, you can turn it on by pressing a particular function button, and it will keep the engine running that speed until you turn it off again. If you try to stop and start the engine while the cruise control is on, it will jerk to a stop and start up with a jerk too.
Jerry.
Having BEMF in consists can cause wheel slip and skidding problems. When grades are thrown into the mix problems can be compounded. The biggest problem us modelers face with down grades is the sloppy back and forth motion of the worm gears. Having a little slop will make the loco jerk back and forth while descending the grades. Adding BEMF to it will compound the jerkiness to a level unacceptable to most modelers.
A general shopping and class repair of all your locomotives is in order. First get a couple packs of Kadee coupler washer/shims. Remove the worm covers and shim both sides of the worm to limit the fore and aft movement but still allow it to turn. Might as well grease the gears and oil the bearings while your there. Next turn off or reprogram BEMF/RTC and try your consists again. On TCS decoders I set CV10 to turn off BEMF when it hits speed step 10 of 128.(I love that feature and wish all decoders had it) The first thing you will notice is how easy and smooth the locos start and how smooth they drift down hill.
Pete
I pray every day I break even, Cause I can really use the money!
I started with nothing and still have most of it left!
Try to break up you sentences. The space bar works quite well as does starting a new paragraph.
They are quite difficult to read.
Rich
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.
interesting point ,i have been known to misunderstand info in the past but not liking to admit it. but if I remember where I read it ,it was a thread concerning two p2k W/older Qsi that were doing the push pull dance and I thought the prescribed fix was to turn down or off the qsi equal of a bemf or what ever , so maybe I came to my own resolve .so what is the bemf equill for QSI ?
I don´t really understand why shutting down the BEMF should STOP the problem you are encountering with consisting and grades?
A properly adjusted load regulation (BEMF) is actually there to avoid speed changes under load and at grade.
You should rather see if some of your locos doesn´t have BEMF! It is surely that that is a problem.
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you would think Id know this by now: but after building my helix Im getting some pushing and pulling on my concist that wasnt that bad when all was flat. read somewhere to loose the bemf ' s but heres the deal got a few 160 series digitrax ,quite a few factory QSI p2k and a couple a at1000 psunami .Ive done some programing on the psunami & digitrax but on the QSI ,s just the adresses ....I have a zepher & astand a lone pr3 @ the computer ...so if some one can give a quick and dirty recipe for each of these decoders to shut dwn the bemf s that be mucho gras .........oh I use the decoder pro w/ the pr-3 and all decoders have been read & saved in the computer .......the qsi is the one that confusses me as dont recall seeing bemf on decoder pro but some throddle choices , good direction here please ......and yes most are match pairs example p2k gp7 & p2k gp7 run together(but dont play nice) ,p2k f7 ab set.(no problem here),atas rs3w/psunami & atlas rs3 w/dgitrax use to run together nice on flats but not under the helix load......now I cant update my speed matching right now do to reworking the layout (not enough double trk working right now so thats why Id just like to shut dwn the bemf s to get me though testing the helix,plus the zepher was not very good for speed matching, I want a digitrax 402 throddle for Xmas and maybe a SEB ,love the Zepher just not for trying to speed match...Jerry