Design Challenge | A 3D Printed Single Wheeler? | LNWR Problem Class

[@jamesgilbart2672]

Seriously impressive design! I liked that stroboscopic effect making the different-sized wheels of the motor assembly appear to turn in opposite directions.

[@SamsTrains]

haha thank you! Yeah I noticed that too - quite hypnotising isn't it?? Thanks for watching, Sam :)

[@timbervalleyproductions]

Glad I could be of help and you found the book handy! Awesome video, looks like it'll be a fantastic little loco!

[@SamsTrains]

Thank you so much my friend - it's one of the best books I've got for information and drawings... many thanks again! Thanks for watching, Sam :)

[@karmanline2005]

I need a copy!

[@bigmonkey999888]

Hi Sam, proud so you should be absolutely brilliant job! However perhaps consider a short SketchUp tutorial describing the design of some of the bendy bits that is all the curves on a piece Steve

[@howardsmith189]

As a retired draftsman who used 3D cad, you have been doing a fantastic job in developing your designs. What you are doing has greatly impressed me with your technical ability to solve the many design problems associated with model locomotive design. Well done, keep up the good work.

[@David-g1p-v8k]

When I leaned draftsmanship it was with HB, H, AND 2H pencils, my school exam included drawing a cylinder mower blade in isometric, utterly sadistic!

[@babbagebrassworks4278]

This 3D resin stuff is what I only dreamed about 5 decades ago when I got into modeling. Details that cannot be seen unless magnified. Plus once CADed it can be printed at any scale.

[@TheRailroader576]

Hi Sam! Wow, an LNWR locomotive?! Love that railway! My favourite LNWR engines are probably the Cornwall, Jubilee 4-4-0 (gotta love compounds), the Greater Britain and the Claughtons. Finally, here's an idea for the future: Uncle Fredrikson's Balancing steam locomotive, I think it could be possible if it was a tender locomotive that doesn't have a pivoting drawbar. (up and down movement) 😄

[@SamsTrains]

That's awesome I love it too! haha I have thought about it too, but it's just too tricky to get them reliable... though I have ideas for more crazy rolling stock :D Thanks for watching, Sam :)

[@peterwebster3076]

Looking very promising sam always wanted a single wheeler loco will you be sharing your print files if a successful project in any form I would love to print this myself

[@sgw8903]

One of the most engrossing watches for me in a long time. And I am not even a train enthusiast, Just a background interest in engineering and design. Apart from the interesting content I think your presentation skills are top notch. Your videos come across like a documentary from the past. Full of detailed information clearly and enthusiastically delivered. A rare pleasure these days. Thank you.

[@SamsTrains]

That’s such a lovely comment, many thanks for your kind words, really appreciate it! Cheers, Sam :)

[@CymruRails]

Well done Sam! You should be very proud of your work. I can’t wait to see how it looks with the details!

[@SamsTrains]

Thank you so much - hope you enjoy the next section! :D Thanks for watching, Sam :)

[@briandesens144]

Awesome video Sam's trains

[@SamsTrains]

Thanks Brian! :D

[@briandesens144]

@@SamsTrains you're welcome 😊 buddy 😊

[@crazypickles8235]

Sam, your work in CAD remains amazing to me and I really appreciate your efforts to making this hobby more widely accessible. You continue to pump out some of my absolute favorite videos on KZbin and I have been a fan since 2019. Thanks for everything you bring to the model railway community! Much love!

[@joshslater2426]

Awesome start. I’m glad you’ve been giving pre-grouping locos some justice. The LNWR has a lot of untapped potential in terms of locomotives, so I can’t wait to see if you make any more (a Claughton or one of their Atlantic tanks would be amazing).

[@SamsTrains]

Thanks Josh - I do love the pre-grouping tender locos... and you're right, those would be awesome to try! Thanks for watching, Sam :)

[@drewvanzee6433]

I am so so excited to see the rest of your progress on this! Your ingenuity is seriously so inspiring!!

[@brianartillery]

For someone who, only a few years ago, said that they were not particularly skilled at making models or painting them, you have definitely shown that you were selling yourself short. Vast leaps into the unknown, are what you have taken, and your model projects get more and more advanced. This one is simply breathtaking, both in the complexity of the thing, and your solutions to that. You, sir, are a genius. Fact. 👍👍👍

[@SamsTrains]

haha you're very kind Brian - it was very true at the time, I've only been doing this a couple of years, so still very much a beginner... I hope this one will raise the bar for me though! Really appreciate your kind words, Thanks for watching, Sam :)

[@levidarling5107]

It’s nice to see you back at making new and obscure locomotives again, Sam. Have fun!

[@SamsTrains]

haha thank you, I really do love it! Many thanks again, Thanks for watching, Sam :)

[@TobyOliverHenryFan]

WOW! This Model Is Beautiful! Can't wait to see it fully printed and fully painted! I'm sure it'll turn out Great! I hope your friend, who challenged you, is also proud of how well you forged this engine!

[@CymruJedi]

This is so impressive and inspiring. I really can’t wait to see how it looks!

[@SamsTrains]

Thank you so much my friend - hope you like the final result! :D Thanks for watching, Sam :)

[@TheGreatWesternGuy]

Oh fantastic! I knew from the post you put out yesterday it would look great, but nothing like this! Absolutely stunning work so far, and looking forward to the next installment of this project! Keep up the good work!

[@SamsTrains]

haha you've a good eye then! Many thanks for the kind words, hope you enjoy the rest! Thanks for watching, Sam :)

[@RCassinello]

I think you've inadvertently designed the best possible mechanism for model trains here - with driven small and large wheels, you've got the best of both worlds when it comes to gearing. You've basically combined two different engines together - It's like having a freight engine to start your train, then an express engine maintaining its speed. Brilliant!

[@hiryu6672]

The amount of effort that you put in to these models is absolutely astonishing! I believe that your tremendous work will not pose a single "problem" upon assembly :)

[@Mighty_Square]

Wow, that thumbnail is detailed. This is going to be a good one by the looks of it Sam!

[@SamsTrains]

Thank you so much!! This is the most detailed one I've ever done :D Thanks for watching, Sam :)

[@lindaoffenbach]

Amazing new printing project Sam! Resin does open up an entire new world indeed. Another potential problem of resin printing is deformation and warping of the printed materials which your prototype does show as well but you hopefully get that sorted. Märklin has done an RTR of such wheel configuration with the 'Adler' (Eagle). We don't have it in the collection so we don't know how they've solved the inherent traction problem. Your solution seems to work well, so well done there. The prototype was a Stephenson's made and design for Germany's first commercial railway by steam traction for the public. Bon chance for all the work involved and for bringing this fascinating loco to life. Cheerio.

[@SamsTrains]

Thanks Linda - yeah all sorted with those issues now luckily! I'd be interested to know how they solved it actually, it's certainly a tricky wheel config! I'd guess it's tender/coach driven, but only a guess! Thanks for watching, Sam :)

[@lindaoffenbach]

@@SamsTrains Having found online instructions of that model (year 2000), yes indeed, you're quite right. They've put the motor in the tender which has 4 wheels / 2 axles, all being driven via 2 worm gears. Two wheels have been given rubber tyres (M's default standard) opposing diagonally, but you don't like such. The pickup shoe is located under the tender as well but that's not relevant for the Trix model (2-rail DC). Running characteristics have been rated as mediocre due to rather compromised contact to ground caused by the relative lightweight of the whole thing. But there you have it. Tender driven indeed. However, in your case, your tender in the project has 3 axles as well which would pose a similar traction problem should the motor been place there.

[@kupferbergbahn7952]

What an incredible locomotive to recreate in 00! Seeing this has gotten me very excited. Really hope it'll all work for you.

[@NWRJ_WStudios]

I can't wait to see the results Sam, you did a great job on making it. Cheers Jasper Willow

[@SamsTrains]

Thank you so much!! :D

[@pault1289]

That is really impressive work, I'm going to show it to my son who is already a very keen train enthusiast (model, full size, narrow gauge - you name it!).

[@Noodlewerfer]

Incredible! I can see how much the complexity has jumped with resin! This locomotive reminds me of the Stirling single. I really like single wheelers, great work Sam!

[@JRS06]

I can't wait to see your take on a single wheeler. Your 552 class blew me away, so whatever you make next will undoubtedly be even more impressive. In terms of LNWR, I'd love to see someone make a Crewe Type like the preserved Columbine in model form.

[@SamsTrains]

Thank you so so much! I'm hoping this will blow the 552 out of the water because of the resin details... fingers crossed! That would be wonderful wouldn't it?? :D Thanks for watching, Sam :)

[@edwardhawke8338]

WOW! So far so good. Looking awesome! Keep up the good work. Fingers will be crossed!

[@SamsTrains]

Thank you so much - much appreciate it! :D Thanks for watching, Sam :)

[@callumk5]

Very impressive. Good luck with the printing. Here’s looking forward to the end result.

[@TenCJones]

Amazing! Well done!

[@SamsTrains]

Thank you my friend!

[@David_Mattox]

Awesome video, Sam. Looking forward to seeing the finished product! Sorry to bring this up, but I’m having trouble re-establishing my membership. Alright if I email you?

[@SamsTrains]

Sure David, sorry to hear you're having problems - feel free to! Thanks for watching, Sam :)

[@omattoxic]

That would have to be on e of the most inspiring things I've seen in ages. Well done, that was fantastic.

[@VonMush]

Not boring, thank you for detailing the thought processes thoroughly. It's always exciting to take something on paper and bring it to life. It would be awesome if you could make this into a limited run with a manufacturer that I could buy and run on my layout. Excited to see the end results, fingers cross.

[@SamsTrains]

haha glad to hear that - I think that's the essence of it... bringing something on paper to life, very good! That's very kind, I'd love to try that one day, Thanks for watching, Sam :)

[@ChrisGBusby]

Centre mounted dual ended motor driving the outer axles with the driver free running and floating up/down and left/right? Simple gearing via worm gears (one left handed, one right handed) and still plenty of space for weight over both driven axles. Just a thought :)

[@SamsTrains]

That is a great idea for sure, but there's only room for a small radius gear over the rear axle due to the height of the running plate in the cab... so there'd have to be multiple gears powering that axle, taking up a lot of space. The twin worm drives plus the motor would actually pretty much fill the body too, which would leave very little room for extra weight! Thanks for watching, Sam :)

[@roberthuron9160]

Sam,small note- your prototype is in the shop gray,that the Victorian builders used,for the photos! The reason for that,was the use of ORTHOCHROMATIC FILM,which was extremely blue sensitive! PANCHROMATIC FILM,all colors didn't come in,until later! Ortho film was/is still used in the graphic arts for printing plates(lithography),and other technologies[including printed circuits]! Just a side light,on what most people take for granted! And yes,I handled my share of that type of film!! Thank you 😇 😊!!

[@Alex-cw3rz]

This looks genuinely amazing! Hope it all comes out well, can't wait to see

[@SamsTrains]

Thank you so much - I'll have more to show soon!! :D Thanks for watching, Sam :)

[@Cape_Cod_Steve]

👍👍 Wow . The details you are going after - the Saftety Valves , that Whistle , Tender Brake wheel , and on and on . . . Delightful one-two punch with your Dining Train offerings . . . Cape Cod Steve

[@SamsTrains]

Thanks so much Steve - I really really enjoyed modelling those tiny details... there's something so satisfying about drawing them... in love all over again! Thanks for watching, Sam :)

[@232stinger]

It looks beautiful, can't wait to see the finished product

[@davidbugler4597]

In the March 1967 'Railway Modeller' there's a Stroudley single-wheeler with the leading and trailing axles driven, leaving the centre axle unpowered and floating. That could work here too. Alternatively, how about tender drive, which with decent weighting could effectively give you a power bogie. 24.25 The 'brake wheel' is, I'm pretty sure, for raising and lowering the water pick-uo scoop between the second and third tender axles. If you have this wheel and shaft, ideally you should also fit a basic representation of the scoop as well -- not that much of it would be visible anyway in the raised position. Ramsbottom fitted these scoops to his express locos, including the Problem class, from 1862.

[@SamsTrains]

Yeah I did consider this too! I deemed it too complicated to bring gears to both ends of the chassis like that. Tender drive would almost certainly have been much more sensible... but I just like loco drive, and I enjoyed the challenge of doing it this way... it was a bit of a skill building exercise I guess! Thanks for watching, Sam :)

[@cerneysmallengines]

first off, hats off to you on making an incredibly difficult locomotive. i think you are on a great path to making it work, here are just 2 other options that may have worked. the first is my favorite, and thats to have the single wheel driven, have the rear wheel fixed and have the front wheel floating in a sprung slot. this produces an authentic look but has issues with traction the second, i would have had the pusher and trailing wheels powered, with the center single left unpowered. having it floating with a light spring pushing down would keep the wheels in contact with the rail. this in my opinio would produce the best runner, but might have other problems i am unaware of. overall, i think you know what you are doing and probably have the best design. these are just 2 other alternatives that came to mind

[@stevenmitchell6040]

well done mate, you can definitely be proud..

[@SamsTrains]

Thank you so much Steven! Thanks for watching, Sam :)

[@patricksmodels]

This is a truly impressive project. The gearing to drive both the single driver and one of the small wheels is very interesting. Looking forward to seeing it come to life

[@davidwest7443]

Wow I can't wait to see the next part. Fingers crossed that all the pieces print good and you don't have any issues. This really looks like it will be a fantastic locomotive and definitely different than any scale model out there. Very well designed with spectacular detail. Can't wait to see the finished loco running around your layout.

[@BobSimpkin]

Oh wow! That's brilliant Sam. The level of detail is fantastic and the designing of the wheels and gearing is some difficult engineering. I'm looking forward to seeing more of this model. Thanks for doing the video.

[@magnificus8581]

This is freaking awesome! If the manufacturers don't make what we want, we will do it ourselves! Next up, The Crampton!

[@timboyle3114]

WOW - Sam, seriously impressed! Good luck in the build!

[@andrewpalm2103]

You have truly upped your game, Sam. Most impressive, indeed. I look forward to the next installment in this series. Cheers from Wisconsin!

[@nokiadestroyer8085]

the fact that you are designing this loco just by yourself blows my mind. If this loco would be for sale i would buy it. great work m8 :)

[@MGDriver99]

Always a kick when you find an engineering solution to a problem. Just as a point of interest, you can see one wheel spin slightly when starting after changing direction - this is because of the backlash in the gears. If it's the driver that momentarily spins when starting then at least you can claim it's prototypical! If you're not using one already I can recommend getting a "space mouse" to orientate the CAD model with your left hand while you select points / commands / etc using the normal mouse with your right.

[@alanrochester5771]

This is great work Sam, I am really looking forward to seeing the rest of this series.

[@NWRJ_WStudios]

23:55 You did a wonderful job on the tender Sam, it's certainly a lot accurate than my design. Cheers Jasper & Willow

[@SamsTrains]

Thank you so much! I'm sure your designs are very accurate! :D Thanks for watching, Sam :)

[@davidstrains4910]

Interesting overall locomotive to try and make from a 3D printer here Sam so I look forward to seeing this project develop, the only 2-2-2 locomotives that I know of that is ready to run is the der Adler which is an early locomotive built to run in Germany that was built by Robert Stephenson and co

[@SamsTrains]

Thanks so much David - really hope you like the rest of the project! Ahh fascinating - I didn't know there was one in model form RTR, very cool! :D Thanks for watching, Sam :)

[@JP_TaVeryMuch]

That Stephenson fellow et al seem to be responsible for similar 2-2-2s from Brighton to Bristol and the USA via Liverpool, not forgetting Daniel Gooch of course.

[@patrickhankin9903]

Sam, bring on part 2 and 3 and any others. Brilliant, just brilliant. So well done

[@dmulders5347]

Ah my favorite serie looking forward to the end product as it looks now it wil be amazing

[@stratman9449]

Well well well...Sam...!!! now that looks VERY good and promising...cheers to that and well done....respect...very nice...and a good looking "prototype" too...looking forward to the finished model......hope it runs as good as it looks...and NO "problems".....haa...

[@lukejackson8741]

Great choice for the No cab version, I wish there was more locos available out there for this sort of thing, I love a good cab but they’re always hidden

[@SamsTrains]

Thanks Luke - had to be that one for me! I agree, it'd be awesome to see more of them! :D Thanks for watching, Sam :)

[@mkaustralia7136]

There is a model announced with one version of it being the cab front only version. I think Sam covered it in the last or second last monthly model update video.

[@pokemontrainermichael5551]

This is amazing loco Sam , your 3d printing skills are amazing

[@Brayden4472]

Very impressive Sam! Cant wait to see the next part!

[@andrewray8433]

Very impressive video Sam mate. Looks like many many hours spent on it. Looking forward to seeing how it turns out.

[@SamsTrains]

Thank you so much Andrew - it's been such a pleasure to work on this, quite sad that it's over with... Thanks for watching, Sam :)

[@tommytorpey8482]

Sam I am so happy you are making this!!! I recently purchased that book you made a video about (locomotives I have known and a further section) and saw this loco. Fiercely searching the internet for a OO scale model I was disappointed to find only old kits. And only two weeks later I see this pop up on KZbin. You are the man Sam!!!

[@brimorg47]

Sam! This is Great! I purchased an etched brass kit of this model many years ago, and I have never managed to complete it. Your drive mechanism is inspired. My solution was to attempt to make it tender drive but that threw up many other issues. Keep up the good work and I look forward to the next video. 👍😉

[@billywindsock9597]

Love the LNWR, I could paint that in a beautiful blackberry black for you! I have that book, the Problem class is one of the most changed classes from new to withdrawal.

[@damianinCanadaTT-OO]

The drawings look amazing. I’d be interested not only to see the printed results but also to hear about any challenges you had with resin printing

[@SamsTrains]

Thank you so much! Next episode to follow soon :D

[@davidchilds9590]

Good job! Keep going.

[@SamsTrains]

Thank you David!

[@AntoekneeDE]

It’s a wonderful model, I’ve been working on a GWR 2-2-2 class; the Queen class, which through its life started with a slender boiler and no cab, but ended with a 20th look with cab and belpaire firebox. It doesn’t have visible pistons and rods which makes it much easier, and as I’ve stuck to a single axle drive, the front axle is suspended, but to be honest, it’d probably end up a better loco with tender drive using a Dean Goods tender (Mainline / Dapol / Hornby). What you have achieved here with the gearing and that twin driven axle akin to the locomotion models Sterling, is absolutely superb, hats off to you Resin is great for detail but I wouldn’t use it for much of the chassis, it ages quite poorly and I’ve got loco bodies that have shattered like glass after a few years so I’d try and make key bits of structure (and valve gear) produced in FDM and where FDM can’t deliver detail, add a resin insert. It’s surprising how capable my little ‘Weefun Tina2’ is at producing rivet detail for these kinds of jobs. Where I’ve struggle with dimensional accuracy over time (heat, UV) I’m actually considering using laser cut acrylic to act as a ‘backbone’ for chassis parts.

[@dandavison3469]

Well done Sam your skills are developing with every project, can't wait to see the finished loco.

[@ricktownend9144]

Brilliant! - I was riveted all the way through ... very much looking forward tonthe next episode

[@paulputnam2305]

Awesomeness Extreme! Fantastic job my young engineering engineer. I’d love to be bored with the details of the gearing mechanism math. Great Job. My fingers are crossed for you(but we know that’s not needed). What a fantastically fun project. Cheers.

[@alanfbrookes9771]

You've used the same solution that Bachmann used on the Thomas-the-Tank-Engine version of the Stirling Single, powering the driving wheel and the rear carrying wheel, and adjusting for the difference in wheel diameters via the gearing. Another solution that I've seen for 2-2-2s is to power the two pairs of carrying wheels, with the driving wheel freewheeling. That, in effect, makes it like a diesel bogie.

[@thestocktonflyer4059]

Great looking loco sam . Your best loco yet . Well done 👏

[@lukechristmas3951]

I think it's great that you are 3-D printing an LNWR Lady of the Lake Class engine as it is one of the Era I engines that really has my interest. Very speedy engines for their time with the "Trent Affair" and all.

[@JustBobo-67]

this loco looked amazing

[@SamsTrains]

Thank you so much! :D

[@modelrailfan37]

Great work, this is going to be fantastic! This prototype is amazing!! You should also 3D print some crew figures, as it is possible with resin printing, and it would also show companies that you don’t need to charge £10 for tiny printed parts.

[@karmanline2005]

Excellent choice. They used to run on the Varsity line through our area and so our house is named after one of them.

[@Shark_Builds_Bro]

If you can't think of anything to do with your prototype models, you could paint them up into scrap engines, or engines that are being constructed as dressing for the layout or a custom load for a flatbed car. 🚂

[@SamsTrains]

That's a cool idea actually - that could be better than scrapping them! Thanks for watching, Sam :)

[@adamrushton1740]

That 3D printed OO gauge loco is very Impressive Sam👍.

[@SamsTrains]

Thank you so much!! :D

[@dennisneo1608]

You are getting quite good at this, Sam. I'm looking forward to the successfully completed version.

[@tobiasbiteofficial]

Hey Sam. Love the video. Really enjoy every minute of it. Now I need a Problem engine for my layout!

[@TheRazorman89]

Amazing work Sam, love the locomotive 👏

[@briancooper562]

Suggest you add extra side clearance on the undriven axle of the loco and the centre axle of the tender to improve running on curves, May also need to change the brake rigging on those axles to allow these axles to move sideways on curves. May also need a redesign of the electric pick ups on the side moving axles. Very good attempt at a redesign of the original for an OO model. Many era 2 locos where 0-4-4 or 4-4-0 until later in the era when 0-6-0 became the norm. Of course 0-8-0 came from Austria in era 3. Well done.

[@Blur4strike]

Going to be interesting to see how the project turns out.

[@Alextrains502]

Love your videos and your reviews

[@SamsTrains]

Thank you so much Alex!

[@robertgraf4917]

If you ARE able to print these successfully, I ABSOLUTELY will want to buy one - this has been one of my favourite locomotives since I was a little boy, and finding a way to get one myself (and to the other side of the world in Australia) would just make my inner child sing. Please don't let this be a dream, please don't let this be a dream, please don't let this be a dream...

[@PuzzlingHousing56]

Some ideas for future 3D Print Projects:Bloomer,Recreating your 4-4-0 with the experience you have now and a realistic version of the 1949 model.

[@SamsTrains]

haha that could be fascinating... it really would have to be a new design from the ground up though! Thanks for watching, Sam :)

[@SharkiSharku]

Hey Sam, great video as always! Just a quick tip from a fellow designer/3D printer enthusiast. Design your rivets as cylinders rather than hemispheres, less geometry for sketchup to run, and also theyll look a tad more prominant than the rounded ones, especially once painted which will also help to round them off a bit.

[@DaiElsan]

Gobsmacked. Brilliant looking design.

[@cabowerks3973]

Wow 😮 Good job Sam!! Fingers crossed 🤞 Good luck 🍀

[@OragamiTobichi-bi6lh]

One of my favorite trains. It close to the Stirling single. But it is still the best. I'm still waiting for my train to come. It's taking forever. But anyway ur the best my friend. Keep being awesome. I do love the trains. Trains for life

[@SamsTrains]

It's a lovely thing isn't it? Hopefully your trains arrive soon! :D Thanks for watching, Sam :)

[@Damien.D]

This is a masterpiece.

[@SamsTrains]

Thank you so much my friend! Thanks for watching, Sam :)

[@brianmicky7596]

Hi Sam, That's very ambitious, all that math's work , bet you glad you went to school, all behind you good luck 🤞, All the best Brian 😃

[@SamsTrains]

haha thanks Brian - I wasn't great at maths at school... amazing how you get better at something when you're passionate about it! Thanks for watching, Sam :)

[@RocktCityTim]

Amazing work on your design.

[@nigelcole1936]

Thats wheelie great - well done Sam

[@datguymiller]

One of these days I'd really love to see another engine of your own design

[@SamsTrains]

Thank you! You should see this one soon :D Thanks for watching, Sam :)

[@malcolmtaylor518]

The Talbot book is an absolute gem of a book, well worth owning.

[@SamsTrains]

It really is... and so thorough too! Thanks for watching, Sam :)

[@PaulSmith-pl7fo]

Hi Sam. Absolutely amazing! I would have liked to have seen how you adapted the purchased wheels to your own design. I can't wait until the next episode.

[@ReggieArford]

Absolutely! I've been wondering about that myself. You see all the scratch-built or kit-bashed locos... and then realize they're running on store-bought mechanisms, particularly the wheels. OO9 locos seem to /all/ be this way.

[@johnlunnun9769]

Brilliant, you are a very clever guy! Good luck!🤞🏻🤞🏻🤞🏻🤞🏻🤞🏻

[@AdiPullen]

Hi sam I hope you and Chloe are well. This is a interesting build I wish a manufactur would do one in rtr Era 2 is the new growth in the Hobby Thank you sharing your build with us Keep safe ARP

[@SamsTrains]

Thanks a lot Adi, we're doing great thank you! I do too - I love this kind of thing! Thanks for watching, Sam :)

[@EMEME27655]

Cool video! Sam

[@SamsTrains]

Thank you so much! :D

[@Peppercorn60163Tornado]

Problem class, awesome name for a class of loco 😂

[@SamsTrains]

hahaha I agree!!

[@1471SirFrederickBanbury]

This is a case where having all wheels sprung would be the best solution. Harder springs on the driving wheel so you can make it work prototypically. You should build a Martin Finney, or high level kit. It would get you TONS of experience on how to make well balanced, sprung or compensated locos.

[@stevekovoc3939]

Your solution to the mechanical side of things is much like what Bachmann did with their model of Emily. Emily is driven by both the big single wheel but also one of the front truck wheel sets.

[@SamsTrains]

Haha that’s right, that’s what gave me the idea!

[@airwolfpete1234]

Wonderful video Sam, keep it up. Have a good one