How I Speed Match Locomotives Using The Scale MPH Method
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- čas přidán 12. 09. 2024
- Follow along with me as I speed match a locomotive using the scale MPH method. I have customized this method of speed matching to my own personal preference by programming speed tables which match the locomotive speed to my digitrax throttle setting and governing the top speed at 40 scale MPH.
If this method of speed matching is something you are interested in, this video has me explain how it works and follows along as I test and change the locomotives speed table. At the end, I share some speed tables I have found using trial and error to be used as a baseline if you are speed matching using this method. Hopefully you find this video helpful.
This train is going 30 scale MPH speed matched using my method:
• HO Unit Potash Train
Thanks for sharing the Speed Tables at the end of the video. I see that you put a lot of work into compiling the Tables.
No problem!
thanks for taking the time to show us this process, nicely done. btw, opening shot- awesome power move, looking good!
+NS5009 Your welcome man, I hope it helps. I figured if I was doing the work to find out all these speed tables I might as well share them. Thanks!
Well done, Ben! Watched all of this very informative video, and saved it to favorites for future reference. I did my speed matching with the token locomotive.I guess I am going to have to get the speed tunnel now,lol!
+TMandN Thanks Al. I thought long and hard about how I wanted to program my units speed before choosing this method. Thinking about the future and having a signalled CTC layout was the main reason for speed matching them this way. I really like the idea of knowing the speed your going by looking at the throttle, that made it seem more realistic to me. Of course the downside is having less fine control of the speed, but so far it hasn't bothered me. I find most of the time I operate between 1-20 MPH anyway. Rarely do I ever run a train at 40 scale MPH.
Brilliant! Just what I have been looking for in speed matching. Well done, thank you.
Fantastic video! Very informative. I want to thank you for taking the time to make this video and sharing your method. This will come in very handy.
+Deryk Glass Hey thanks Deryk. Glad you found it useful.
Your videos are awsome, very helpful stuff and inspiring to try playing around with this stuff. Thank you
Thanks!
Thanks for the great in depth speed matching tutorial. Going to use when I get dcc.
+Peter CPRail8748 No prob Peter!
Ah man perfect timing! I'm ordering some 'things' in the next bit here and this vid is going to help big time in the near future ;) thanks for sharing this!!!
+1JZPWR No problem, hopefully it helps.
+BArailsystem hey, on the kobo special how did you set the last speed step so low? It won't let me touch first or last speed steps. Also you click something to 'average' out the in between steps (4,7,10)...I can't seem to figure it out. Other then that I've managed to be quite successful so far speed matching based off this vid! It's pretty easy now that I've done a couple locos :)
+1JZPWR I don't think it lets you adjust the last speed step so I just left it as is. I'll have to double check my notebook though. Regarding the click to average I believe that was just me clicking the slider tab to make it pop up to where I slid it to. On my PC laptop for whatever reason when I click and hold the slider then use the arrow keys to move it up or down, the slider doesn't move unless you click it once when you are finished adjusting. A glitch in the software maybe. That's awesome man I'm glad its working for you. It gets way easier once you have a few under your belt.
+BArailsystem ok yeah for sure, I thought maybe I was missing something, I guess not because I did the same thing lol ok fair enough! I was trying to figure it out with no luck, I just 'averaged' them out manually XD for sure, can't wait to work at this some more! The numbers you had given certainly helped as a solid starting point!
Great video! I know what I'm doing this weekend... Thanks for taking the time to document this process...
+BNSF9382 Thanks!
Very helpful video as I am about to embark on this process with my N Scale fleet, so thank you. A question if I may - after zeroing out acceleration and braking and setting F & R Trim to 128 at the start of the process, how much accel and braking do you dial back in and what do you reset F & R trim to after completing the speed matching?
I don't put much acceleration and braking in, I found it wreaks havoc with distributed power trains when the locomotives and decoders are from different manufacturers. I can't remember off the top of my head but I think F/R trim is cancelled out when using a speed table.
A great video! Very helpful! I've been needing to speed match my diesels but haven't done it yet because I'm intimidated by JMRI. I understand the Accutrack II speedometer (I have one), but I still have a little trouble understanding how you made the adjustments a few notches up or down on JMRI. ...Roy
+N-Scale Union Pacific Evanston Subdivision To make adjustments a few notches up or down there are 28 slider bars you can use to make changes to each speed step. You can also click and hold the slider bar and tap the arrow keys up and down to move the slider one notch at a time between 0-255.
I really enjoyed this video and I can't wait to get started using this method. Does it make a difference if momentum and deceleration are used? If so how. Thanks for breaking down something that seems so daunting.
Peace be with you,
+TrashMan2008 I don't use acceleration/deceleration, yet... That changes the whole dynamic of speed matching as it adds two more variables. I plan on trying to add some eventually and maybe even a small amount of BEMF to smooth them out.
Very informative - thank you
Great video, very detailed as usual. Problem is, now there is one more thingy-ma-bob I need to buy...Keep up the good work
+1967ghia It never ends!
Great video! Thanks for sharing. I learned a bunch.
Glad you found it useful Roland. Cheers! -Ben
this is cool thanks just starting to get into speed matching
I'm really new to this so please excuse me.
When you do the speed matching as in the video what dose it actually do to the decoder? Does it set the speeds to the decoder so it will keep those speeds till you change them? I'm having a hard time figuring the computers roll in all this are you reprogramming the decoder or the speedometer?
If I decide to purchase one of these what will I need to buy to be able to speed match or is everything I will need in the box?
Sorry for all the questions as I said I'm new to this (just a few months)
Thank you
The decoder has a defined number of speed steps which dictate how much voltage is applied to the motors (speed). Changing these can change the speed profile; ie faster or slower. The speedometer is measuring how fast the locomotive is travelling. So I set it at a fixed speed, measure it and then adjust the speed steps up or down. The speedometer is purchased separately from the DCC system. What I am using here is a Sprogg-II DCC system on my laptop connected to the layout and JMRI decoder pro on my computer. If you are just getting started, purchase a couple locomotives from the same manufacturer, they will run fine together and you will be able to have some fun before worrying about speed matching different manufacturer's locomotives.
Some rookie questions-
1. What's the throttle position?
2. How'd you work out what speed step (28 speed steps) you needed to edit to get the correct scale mile an hour per 99/128 speed steps?
I'm using a NCE power cab so I'm guessing you 99 throttle positions is my 128 positions?
Thanks.
Throttle postion is the number your throttle is set at. At 3:56 I show the math on how I figured out which steps to edit. Yes, if your NCE system goes up to 128 then you just edit 1:1.
I've been trying to find a way to speed-match my locos (all have or will have Tsunami 2 decoders). And your way seems to be the easiest and best way of doing it. and I really like the way of doing the top-end speed no matter what the throttle is set at after a certain point. But my question is why you chose the 12-step speed curve over 14,16 or anything else.
Nice! This video is perfect for those who need help doing this great job - Ryan
+Mr. Minecraft Thanks Ryan.
Wow thank you very nice
Great Video, when your writing data to the decoder are your settings in JMRI set to programming in Ops Mode? Are all of your other Locos isolated or removed from the track?
I believe it was in ops mode. Yes, all locomotives removed from the track. I was using my layout like a programming track, speed matching one locomotive at a time.
Thanks, Love the new layout, Can't wait to see more progress.
Thanks! Hoping to have another update done this week.
excellent video..and great reasons for using both JMRI and the speed tunnel to make this exercise easier and more precise.. justifies the purchase of the tunnel and the interface of the JMRI program. Now for my question.. It seems almost unnecessary to ask this but, I will anyway.. Say you have a loco...that really has a bit of a difference in the speed going in a certain direction...would you make note and assign that loco to run in a particular direction in a consist when traveling forward?
Thanks! That's really odd that it has that much difference between forward and reverse. Since the only variable your changing between the two is the polarity going to the motor. Voltage should remain the same. Have you tried removing the trucks and seeing if there's friction being caused somewhere in the gearboxes?
Great work Ben!.. Wonderful explanations as to why you do what. Makes sense to me. I switched, this month, my DCC control from NCE to Digitrax for Loconet capabilities in the future (occupancy for signaling etc). Tonight I get to watch your video and the Trump debate [possibly debacle] on TV while my wife goes to see Springsteen. I am the lucky one me thinks!
+Maltux1 Digitrax works very well with JMRI that was the main reason I chose Digitrax. I usually change the station when they start talking about Trump, the media up here is treating it kind of like an ongoing car wreck to boost ratings it seems.
+BArailsystem If Trump gets in my wife said we are moving to my country, Canada. How are the house prices in Red Deer? Have you checked out the Railroad & Co. software? I think I still prefer the JMRI as it offers the Wii Throttle and it is free! The RR & Co. software is really easy to use with some pretty cool features. On another matter have you checked out fasttracks (building your own track and turnouts). Looking forward to your new layout in your new house.
Maltux1 I've never heard of Railroad & Co. Looks like its around $140.00, that is hard to compare with JMRI which is free. The withrottle is pretty rudimentry but Decoderpro is a great program and I would like to start playing around with panel pro and signalling. I've been thinking about using a fast tracks jig to do my #8 crossover turnouts.
+BArailsystem I may be changing my O scale back to HO as the cost diferrence is a lot more than I had planned. I have some great HO Locomotives and rolling stock that I can not seem to part with. Plus building new layouts are fun. What kind of track are you going to use in your new layout? I was using kato but think I may go with Micro Engineering flex track and Peco turnouts or possibly fastbacks.I will use JMRI for occupancy and signaling with JMRI. The RR&Co. makes programming very easy but JMRI is free. The fastbacks looks like it might be a lot of fun!
+Maltux1 After running a lot on my friends layout, I am definitely going with Micro Engineering flex track and number 6 turnouts. I am considering buying a Fast Tracks jig to do the number 8 turnouts which will be powered for CTC.
Excellent Demonstration.
+MultiMusicianman Thanks!
Awesome video!! I'm sold, I am going to do my locomotives like this.
+Iowa Interstate Railroad Fan Thanks, I'm very glad you found it useful.
great how to video !!!!
I just ordered it.
i like that. I run most of my freight trains at 40 and 45mph. Hotshot intermodal trains run at 50 to 60 mph .I have the same speed tunnel you have too. Good video too. My Proto 2000 SD60 is slow and thinking on what to do with it. It wont go like my Athearns and Intermountain and Katos do. I just want it to speed match with the others.
+BNforever2009 Holy smokes 60 MPH intermodal that must be wild! I had quite a few locomotives that couldn't go faster than 40 MPH, pretty much all my Kato's so that is why I capped them all at 40 scale MPH.
I havent ran any intermodal trains yet but i think i will run them at 45mph. I know the BNSF run theirs at 60 and 70 mph and the CSX too on the "Jet Trailer Trains". Thats just the high priority intermodal trains,
I think I've followed your instructions precisely, but after I click on "Write changes on sheet", absolutely nothing happens. I mean, the diesels continue to run at the same very high speeds as they did before I changed the speed settings on the speed table. JMRI is making me crazy. ...Roy
+N-Scale Union Pacific Evanston Subdivision Make sure you have checked the little circle that says, "use speed table", and then the pulldown "user defined speed table".
Have you had any issues with locomotives running together if one runs just a hair faster or slower? I'm paranoid that I'm ganna burn the motors or damage the gears even if they are slightly off by 1 or so mph. I know thats a bit irrational but just thought I'd ask if you've had any issues with it. Thanks!
You're very unlikely to actually damage locomotives internally because they are a bit off from each other. So don't be paranoid about that. (If they are waaaay off then the ones that are faster may be prone to overheating or higher wear, if you run them that way for a long time. But again, don't be paranoid.) Speed matching is much more about getting good performance; making sure all the locomotives are actually pulling the train forward instead of dragging the other locomotives down, avoiding unrealistic looking slack action between them, and enabling helper ops. Trying to do helper ops without speed matching might lead to a lot more derailments and thus damaging the models externally. ;-)
None of mine are perfect, like jaggedben said, there's nothing to worry about as long as they are fairly close. When you throw in all the different variables like motor torque, gear ration, weight/wheel etc etc its impossible to get them all 100% speed matched.
I run mine a lot with very heavy trains and I've never had an issue.
@@BArailsystem awesome thank you! Ive usually spent a good hour in the past matching a pair of locos. Guess I can relax a bit now lol!
Going back watching this to refresh. I think my 4 yr old Accutrack II
Has crapped out.
Totally Inconsistent readouts. Fwd right to left reads 44. Left to right reads 51. Reboot box and (sometimes) it starts working normal for a few minutes. Then goes nuts and reads 50 as 2.4 or .2 mph. Then may come back to 50 after a reboot. 😖
Have tested on 3 different locos that Were set to 50 previously.
So I ordered a new one after tearing down the unit to reseat the IC without an improvement. Pretty sure the Right Side Emitter/Receptor Bad.
At least with a new one I have a good reference to compare with if i can get Parts someday from somewhere.
Interesting using the throttle setting as "speed". In my case I use up to 4 different DCC systems, each at a different voltage so this isn't something I'd do. I'm in N scale and I start by using the speed tunnel but then I put to the two locos (or the existing consist and one I'm attempting to match) to fine tune it - the Digitrax throttle lets me adjust both. Anyway, I run them both to make sure that the new one is neither gaining or losing distance to the front one.
Oh, and you didn't mention BEMF. Do you turn it off (it looks like it).
Hi Don,
Yes I don't use BEMF because results vary widely between the decoder manufacturers. There are some locomotives that pull better under load then others so in the future I may put a little BEMF on the good pullers so they consist better with locomotives that slow down under load.
Most of my Speed Matching is with the same decoder manufacturer. Even so, I've been worried about BEMF locos fighting against each other and so have turned it off. Although, I suspect that if I understood the CVs better, I could turn down the BEMF, let it be milder but still use it, especially to help at the lower speeds.
Yeah that's exactly what I was thinking. Wouldn't need much, just a little bit of BEMF and they'd run really nice together I think.
ok ok you put my last video I posted to shame , my CN collection ,, lol ,, so how did you consist all them together , thanks for sharing , I like the system you did to match them up
+sparky107107 On my digitrax system consisting is simple. The locomotive on the right throttle is the leader. You use the left throttle knob to add in more locomotives by selecting it's number and pressing MU, +. You can add as many as you like to the consist and they will all be controlled by the lead engine.
nice , , nce is not like that , have to make up the consist
Hi Ben....Al is on the hunt for one of these when we get to Calgary.
You need lots of time and patients for this job and maybe a beer or two. The process is easy with JRMI and a speed device. Add another thing to my list of things to get. Great job.Scott
+Scott Downey Thanks Scott. You've got that right, but the end results are worth it!
Jmri is free at least
Are you using different manufacturers decoders or all the same? Mine are a mix of LokSound and SoundTraxx.
Athearn Genesis, Scale Trains and Intermountain locomotives.
Yes, I have the same mix. Although I have more ESU now than when I made this video and they are doing their best to make it hard to adjust decoder CVs with Decoder Pro. They want you to buy their proprietary programmer.
@@BArailsystem thank you for the reply. I think it would be better for the hobby keeping the equipment more universally compatible.
I know, I'm only 7 yrs. late with this but was wondering if you turn OFF bemf when doing this. Thanks
I'm watching your video again a year later as I try to speed match a couple Intermountains and a Scale Trains Tier 4 GEVO... It can be exhausting... Might you know the Maximum Scale Speed on the Scale Trains Tier 4? I have been speed matching everything to 100km/h (60 mph) but this GEVO (from August 2017, First Run) seems to max out at 82km/h (about 48mph)... I'm wondering if it is 'locked in" to Shunting Mode somewhere in the LokSound V4 CVs...?! -Chris
Hi Chris,
Sorry, I haven't done anything with mine since I got them. You might have trouble achieving 60 scale MPH across manufacturers, in my fleet there are a few that had trouble hitting 40 scale MPH. Kato's especially. My Red Barn which is on a Kato BNSF SD40-2 chassis, can barely hit 34 scale MPH, might be something wrong with the motor. The problem is if you have a few that are much slower and your speed matching up to 60 scale MPH, the slow ones will end up being dragged along. Personally, I found that 40 looks very fast in person, and it just so happened to be a speed that all but one of my locomotives could achieve.
Thanks for the detailed info. I guess it is better to speed match everything to a lower speed than a few different speed matched groups that you forget about later, and end up dragging one engine along and having mechanical issues with a pricey model. Happy New Year!!! -Chris
That's what I found Chris. 40 scale MPH seems really fast to me with a big train behind but that may be subjective. Happy New Year!
if 3 engines run at the exact same speed do they all pull the train or does only 1 engine do all the pulling
Theoretically if they were a lot more powerful than they are, then one locomotive would likely take all the load. However just about every model slows down a bit when load is applied so they all end up pulling the train at roughly the same speed.
hmm not sure how they govern speeds in the US, though I would expect your base top speed rate would be 80-95 MPH, KPH can be up 130kph in certain sections over that average is between 70-100kph ...
speed matching has bugger all to do with it you need to power match each unit..
the issue you get on power mismatch will cause improper traction..
if you were matching unmatched series together typically over time you would be requiring the lesser powered units to be upgraded to higher hp so each unit in the consist applies the same power at the same time..
across all units if following power scripts you run 2400's with units outputting 3600-10,000hp with average being being 4600-6000hp
look at all the units you have and look at specified output between early and late model to generation units..
Could you do it so that the top speed is at step 100 and the mid speed is at step 50 on the throttle so if you end up using a different throttle it would control the locomotives in the same manner? I have 2 different types of throttles, one like yours in the video, and a smaller unit.
Yep you could do that, it wouldn't be much different than the stock settings though as on digitrax 99 on the throttle =speed step 128.
The main reason I did it this way was to cap and standardize the top speed and giving you the ability to "know" how fast the train is travelling via the readout on the digitrax throttles.
Mark Matteo m
You say your method doesn’t allow as fine of control, but it seems to me that if you have the loco running 40 mph at setting 40 then it would be near 35 mph at setting 35, 1 mph per setting seems pretty good.
You're right it's still pretty good, I just wanted to point out that you do lose a few speed steps using my method compared to the factory settings of 99 speed steps.
Could you please tell me which software you are using? Will it run on a Mac?
JMRI decoder pro, yes it will run on a Mac.
Sweet hobby
So I’m a total noob, but, do you have to speed match when MU’ing them?
Yep, MU'ing them will just mirror the speed step commands given to the lead locomotive. So if they are not speed matched you'll have the wheels turning at different speeds on different locomotives.
Where did you get the modern Autos from? I'm having great difficulty finding modern 1:87 US models
Herpa makes some north American stuff, a lot of mine are Audis though.
Thank you for the reply; I had found that Euros are no problem...I do currently have a VW , may have to move up to Audis, a Viper is the only US I have so far
where did you get the computer program your using?
jmri.org/
Okay I've been on that page before how do I buy it from them
You don't have to buy it, it's free software. Click on the latest version and follow the instructions for the computer you use.
Dave Blaedow llll
What interface did you use?
Sprogg II
I also have a Locobuffer USB works the same.
Do you have any steam engines
+Bucs Fan No I don't have any steam engines.
Hah. Six minutes in, two things came to mind.
1: 76MPH is a pretty good top end for a hot shot freight. Very prototypical for that, and passenger service will kiss triple digits in certain corridors.
2: Come on down to N scale, where NOBODY SELLS SOMETHING THAT ISN'T FUCKNIG SUPERSONIC! My fastest locomotive is an old Rivarossi 0-4-0 and it's top speed in sMPH? Somewhere around 400. I shit you not, it's somewhere around 400 scale miles per hour. Even my modern Atlas locos top out at around 140-150, my LL E8A will do about 180sMPH...shit, the only locomotive in my entire fleet that doesn't need its decoder to bring its speed down into the realm of 'not so fast it would derail in real life' is my Atlas 2-truck Shay, and even that is too fast. Real shays struggled to crest 15 and mine will happily chuff along at 40 or 50smph. Ever seen an 1870s 2-6-0 Mogul doing Amtrak speeds? Atlas sells one in N scale. Ever want to see a T4 GEVO pulling the Shinkansen? Kato's model is juuuust about fast enough to do it. Kinda ridiculous, actually.
On a side note, maybe I'm weird, but I run 128 speed steps simply because, if I had my druthers, I wouldn't have speed steps at all. Rather, I'd have the same infinitely variable throttle the prototype has. 128 is a whole hell of a lot closer than 28 and 14 ever could hope to be.
1: Yeah they run 14000' freight trains up here in western Canada at 65MPH. I personally think 60 SMPH in HO is way too fast for anything besides a massive club layout. Due to space constraints, all home layouts end up having way tighter curves than the prototype and they look off to me negotiating those curves at speeds greater than 40 SMPH, in my opinion.
2. I did not know that the N scale locomotives we're geared that fast. Why do they do that?? LOL a shay just given' er at 50 MPH. That would be a sight to behold.
Side note: All comes down to personal preference, I prefer "knowing" the speed of my train so my engines have 40 speed steps. Most of the real ones have 8 speed steps and then speed is determined by the grade and what you are pulling. The great thing about DCC is now we can really customize how we control our trains, regardless of scale, which is amazing compared to what it was like 30 years ago.
Thanks for the comment!
It's probably because we don't have much room for more of a gear reduction in such tiny locomotives. 9 times out of 10 the only meaningful reduction we have is the worm itself, the rest of the idlers being so similar in size that they don't have a significant effect on speed. Some of them don't have *any further reduction at all.* My 0-4-0 is one of these units, where the motor worm acts on a spur gear that then acts directly on the axles, with tooth counts of all those spur gears being roughly the same.
3-pole motors also contribute to the meteoric speeds we can see sometimes, but even 5-pole motors don't serve as a cure-all. My 2-6-0 has what must be the tiniest little 5-pole open frame motor in N-scale stuffed into the cab and it's also one of my top five fastest runners if I were to lift the speed cap in it decoder.
Those nicer engines will creep so slow you can't even tell they're moving(My Shay is by and large the best loco i have for this, itt'l sustain 1.2sMPH, next best is my LL E8A at 3.5 or so(But it's still analog) and my DD40AX at ~2.5sMPH). Speed demon Mogul will also creep like an absolute boss, provided it can get decent pickup.
But, yah, N-scale locomotives are almost universally speed demons, and Kato locomotives are absolutely horrible about it since the Japanese are ridiculously strict about max voltage being 12 while our DC power packs tend to be multi-scale affairs that'll push a blonde one shy of 20 volts out.
My Shay is certainly a sight to behold when I let it run, but I usually don't. I've found that, at speed step 25 of 128, itt'l idle along at somewhere around 15-20sMPH. Still faster than a real Shay could ever go but at the same time it's the only steam locomotive I have that will sustain speeds that slow and it's running slow enough to perceive the rodding and shafting on the engy's side in motion. I'm honestly half tempted to try to dismantle the 'engine' and paint those conrods and the crank a nice shiny steel color, then throw an oil wash over the whole thing and some heavier grease weathering at the big ends, mains, and small ends, just to make 'em stand out and be easier to see while keeping 'em looking like they're on an engine that actually runs.
There's something totally unrelated to speedmatching that's on my mind, though. I'm used to every last cubic millimeter being crammed full of the highest density material that'll pass RoHS certification(And still struggling for traction despite that), but I've seen plenty of pictures of de-lidded HO diesels that are more air than lead. Is that really the norm that there's vast swaths of empty space under those shells?
Very interesting, I did not know about the challenges of reducing the gears in N scale locomotives. Definitely an issue and probably prohibitively expensive to use materials other than plastic or babbit to get the required precision for adequate gear reduction.
Older models have quite a bit of space in them depending on the manufacturer. Old Athearn's and early intermountains are quite light and suffer from poor traction and pick up. But all new releases especially in the last couple years the trend seems to be towards packing them absolutely full of metal. The recent ScaleTrains.com ET44AC is a good example, I took the shell off to have a look and it is completely full of metal engineered to fit in every nook and cranny while still allowing just enough space for the decoder and speaker. The engine weighs 760 grams (26 oz)! That is very very heavy for HO scale.
Mm, yah, seeing those pics had me wondering. I'm used to locos being excessively light no matter what...I have Bachmann's exquisite DD40AX Sound Value in N and found a full carbody shell for it on shapeways, took the chance to stuff another 2.5oz of wheel weights in there and nearly doubled its pulling power!...and I was wondering how they could even function on a model railway with so much air in them.
I almost wish RoHS didn't apply to N locomotives. My LL E8A has two ala-carte lead weights...genuine, actual, honest-to-goodness plumbumb...clipped on over the truck towers, and they occupy 95% of the space in the shell not required for the headlight, frame, and motor/flywheels. That thing accurately models A1A-A1A trucks and is my strongest locomotive outright. Even with the extra weight on the 16 wheel drive DD40, this thing, with only eight wheels actually driving it, pulls harder than everything else. I imagine if I had two more in consist I'd have enough tractive effort to rip the couplers out of their draft gear or shear knuckles off!
I got it. I have to download it. Gu
Great information but hard to see writing
Which parts did you find hard to see Charles? Just wondering exactly what it was so I can try and improve it for next time. Ben