GunnarO

Hi Peter, Not sure if you've seen this, but good description of the seats. Seems the T6 Harvard/Texan used the same seat. http://warbirdinformationexchange.org/phpBB3/viewtopic.php?f=3&t=65446 If this is correct, the straight edge seat was used up to P-51D-5-NA And as a curiosity, Here is the Warren McArthur's patent for one of their bucket seats. https://patentimages.storage.googleapis.com/1c/69/4e/f7097215ef3be3/US2291247.pdf Cheers

Hi Peter You've got this, which slightly differ from the information you have already. This is from the P-51 B/C Parts list. There were probably more than one version of the seat, the parts list have two. If you look at the P-51 D/K Parts list, you'll find this: Cheers

https://www.desser.com/Aircraft-Tires-and-Tubes/27-10-PLY-AERO-CLASSIC-DIAMOND-AIRCRAFT-TIRE-DESSER-AA227.asp Here is the tyre for the Mustang if you want to buy a new one today. On the drawing it is a Goodyear 24 x 7.7 tyre. Which by the way is the same size as used on the Boeing 737. But if this is the right pattern is hard to say. The image looks mostly like the cross pattern. Cheers Gunnar

This is the closest I could find Peter. The single dimension on drawing is 4.01 in. This is drawing 117-33101, Chassis assembly, Main Landing Gear. Cheers Gunnar

I'm afraid the project is put on hold due to ongoing research on the full size Whirlwind. There are still some areas that needs attention, and the underside of the fuselage with the recess for the flap is one of them. That's currently where the model is too. I'll continue as soon as I figure out the structure and details in that area. In the meantime, I've started another 1/24 scale print of a rather obscure Soviet fighter prototype..... Stay tuned... Cheers

I'd suggest you try printing with HIPS. It's Polystyrene so normal glue can be used and it is easy to sand and cut. Stronger than PLA but not so hard surface. I've got a Prusa i3 MK2S and can give you pointers for setup etc. If you use 0.4mm extruder, use 0.45mm walls. (I always use 0.05mm wider walls for the thinnest parts) Normal wall thickness should be 1.5 - 2mm for strong rigid walls. I print mostly 0.1mm layers at slow speed, makes the best details and the surface look good. My Whirlwind project is currently on hold due to project research, but I have started a new one that probably will be posted here in the near future. I started with PLA, but moved on to HIPS. I'll never go back. If you want to check it out: http://forum.largescaleplanes.com/index.php?showtopic=71157&hl=whirlwind There's a nice thread about 3D printing as well : http://forum.largescaleplanes.com/index.php?showtopic=70571 Cheers

Great job and an outstanding model Kev.

Long time since posting, and in the meantime lots of problems with printing polystyrene. Long story short, Z axis adjustment lost after a firmware upgrade without being noticed.... I've finally managed to dial in all the HIPS and printer settings and can move on with the project. During all the tests, I've concluded that printing it like a normal kit is not the best way to go. I'm now trying to print it in bits and pieces and glue them together. (well, that's basically what a "normal" kit is also.... - Larger bits and pieces...) This way I can print the whole rear fuselage as one solid part without seams. Looks very promising. And print bed adhesion is not a problem anymore once I got the Z axis properly adjusted. This is current status for the new parts: Cheers

just like me... Look forward to your next project already. And don't be surprised if a 1:24 scale 3D printed F-104 makes its way to LSP eventually. Cheers

That's a good advice, Jim. I always want to put all the details I can get into the model. But, If I ever want to finish it, I have to remove and simplify a lot. I ask myself "what will be visible on the finished model" quite often, and have started to make the 3D model based on that. (This relates mostly to 3D modeling/3D printing) So, on the Whirlwind I'm making, I've left the elevators attached to the tailplane since it's not important to me if I can move them on the finished model. This leads to a simplified hinge based on what's visible, like this: Because, when I've put on the litho plates for covering the model, this is what's visible: So, no one can see if the bearings are missing... This is my 85%. I do deeply admire those that put all the details in and make all the control surfaces and landing gears movable, but I'm good with doing things this way and I have a lot better chance of finish it some day than loose myself in details... Cheers

Moving along... First complete print with HIPS. After a LOT of trail and error, the first complete print is finished. It's not all good, I have some delamination of the layers. I know however how to fix it, so the top part of the tailplane is tuned in during the print. I think I have the settings ready now, will start a new one tomorrow to check my theories. The surface quality of the HIPS is remarkably good. Comparing to the first print I did with PLA, it's a no-brainer what to use... Adding to that, the HIPS is much easier to cut, file and sand and I can use my old Humbrol liquid glue Cheers

Hey Gaz, They are basicly the same, except the litho plates have been used in the offset printing industry. The litho plates are 0,15mm and I got 10 A4 sheets for £12. Arts and crafts stores have some painted aluminium sheets with the same thickness, but they are £3-4 each. Pure Aluminium foil is much more expensive, a sheet of 0,15x150x150mm is £200. (at least the ones I found...) Cheers

Thanks guys! I got the litho plates on eBay https://www.ebay.com/itm/Aluminium-Litho-Plates-for-Model-Building-pack-of-10-A4-size/391925485031?hash=item5b40944de7:g:9IMAAOSwRvdZaTPC The rivets were done one by one on freehand with a ruler, so a little dodgy... going to use a finer rivet tool and a template with denser rivet pattern on the model. Got the rivet tool from UMM-USA: http://umm-usa.com/onlinestore/product_info.php?cPath=21_22&products_id=1322 Cheers

Thanks, Rick! I'll try that on the next one. This one didn't work out either, but I got more of it... The deep V between the tailplane and the elevator is something I wanted to test. I think I'll leave the elevator attached, so I cut back the tailplane a little to make room for the part of the elevator that's inside the tailplane. I then will use litho plate as skin, and extend it over the V to lie flush with the elevator. hopefully it will look good when finished. Then I thought I could use the parts as a test bed for puting on litho plates. The really nice thing with the surface quality of the print is that I don't need to fill and sand anything, I just glue the litho plates on top of the print. Sorry for the glue mess, I said it was just a test... And then the tailplane skin over front part of the elevator. ok then, more fine tuning of the printer settings... Cheers

Thanks, yes it works very well. Thanks Alex, I've read through the thread already. The bed on my printer can't be switched out. The heating plate is covered with a PEI film glued to the plate. It works quite good. The new printer model has a replaceable heat plate of metal, so I might upgrade at a later point. Yes, I used an 8mm brim but it still didn't work. I'm trying now with a glue stick, and it seem to work. I turned the print 90 degrees on the plate as well, don't know if it helps but tried it anyway. Cheers

FINALLY!!! a roll of HIPS is in the house. First print was perfect, better quality than the PLA parts and easy to work with. Cutting and filing was just plain easy. My favorite material so far. I started with a small part for mounting the tailplane together, and went on to do the tailplanes. Then the problems begun... The following prints would not stick to the plate, so I'm still trying different methods for keeping them stuck. I guess it is the warping that lifts them, so just need to find the right stuff to fix it. The quality of the parts though, is just great. Looking forward to see how the parts turns out when I find the right solution. The cross for mounting the tailplane and part of port tailplane: The hole in the tailplane parts have a 0,1mm clearance, and slides perfecly on to the mounting cross: Mounted together, it's a perfect fit. On to the next test.... Cheers

Thanks, Dan! A very capable CAD package is Fusion 360 from Autodesk. It has all the tools you need for modeling an aircraft and direct export to a slicer software like Cura or PreForm. It has a free license for "enthusiasts", which we are.... Software download: https://www.autodesk.com/products/fusion-360/free-trial License information: https://knowledge.autodesk.com/support/fusion-360/troubleshooting/caas/sfdcarticles/sfdcarticles/How-to-activate-start-up-or-educational-licensing-for-Fusion-360.html Thanks, Alex! Good to get a second confirmation on the decision to use HIPS. Got a shipment confirmation today, so won't be long before next print is running. Cheers

This is good news! Thanks. Can you share some print settings you find works best on your printer? like printing temp., heat bed temp., printing speed, etc. Thanks! I suspected this was the case. For the moment I'll try out prints with HIPS and see if I can use D-Limonene as glue, or maybe normal plastic kit glue will work. Cheers

Great printer, good luck with it. I wish I could afford one, it's excellent for detail work. For my work though, I figured out I could order a lot of parts from shapeways for the price of one and bought my Prusa i3. So, a little progress. Cleaned up the parts and taped them together. Tailplane is done as well. I think I'll call this a proof of concept. The experience so far with PLA is quite good, but the material is hard and brittle when printing this thin. It is also quite hard to sand and a little difficult to glue. I tried CA, but maybe I didn't use the right type because I could quite easy break the parts up again. I thought maybe I should use epoxy glue to join the parts instead, but haven't tried it yet. After a good deal of thinking, the obvious thing occured to me. I should print the parts with polystyrene, It's what I'm used to working with and what most model kits are made of... A roll of HIPS (High Impact PolyStyrene) filament is on order. It has the same good mechanical properties as ABS, but prints as easy as PLA. Hopefully it will turn out more usefull and a better choise for printing modelkits than the PLA I've used so far. New tests will follow and more CAD work to be done in the meantime. Cheers

The fuselage of the S6 was built the same way as the S5, with just a different spacing and number of ribs. Unfortunately, I haven't been able to get S5 drawings yet, but the surface detail of the S6 can be seen here: And the ribs: Cheers

The surface details seems very coarse, I'll see if I can dig up some more details this afternoon. I have collected some drawings that are quite detailed. The Profile Publications gives a good description of the wings and radiator system, you can find a copy of it here: https://rclibrary.co.uk/files_titles/1861/Profile_039_Supermarine_S4-S6B.pdf Cheers

After a roll of filament that didn't work out well, I've finaly made some progress. Some hours has gone into the model as well, so I was quite excited to see if things worked out with this one. The fuselage is divided in two, due to the length, and in two halves like a normal kit. I printed the model halves in a 40 degree angle and the rear part also turned 60 degrees around the first angle. I was very pleased it turned out well after 22,5 hours print time. I printed with a layer hight of 0,1mm so I could use it for the final model in case it went well. A few supports were printed as well, but the most important one was modelled as a stiffening rib between the base and the model. The large base was to ensure it would stick to the building plate. It's easier to see the angle on the rear fuselage here. A bit of cleaning up... And it's starting to look a bit like a Whirlwind A 1:48 scale Classic Airframes Whirlwind for comparison. Cheers

Some nice reference photos here: http://www.gettyimages.co.uk/photos/supermarine-s.5?excludenudity=false&mediatype=photography&phrase=supermarine%20s.5&sort=mostpopular#license Although a different search, many S.5 photos turn up. For a cockpit image, I guess the S.6 is quite similar: http://www.gettyimages.co.uk/photos/supermarine-s.6?excludenudity=false&mediatype=photography&phrase=supermarine%20s.6&sort=mostpopular#license A nice in flight shot: https://www.thisdayinaviation.com/tag/napier-lion-w-12/ Some videos: https://youtu.be/gZ3ZZgp8eyU https://youtu.be/dxBisq4P5a4 https://youtu.be/1e-aqGhJuoI I know that Cambridge University Library holds a few original engineering drawings of the S.5, but only some outlines and GA's. Cheers

Hi Torben, Looking forward to see this one finished. It's difficult to find good references, especially from the cockpit. A very nice piece is the article from Flight magazine February 1928. Here's a PDF copy: https://www.jottacloud.com/p/gunnaro/a1508d4e1b444bd58b4eb09b4e920e59 I'll see if I can dig out some more, the S5 is one of my favorites Cheers

Impressive start Juraj! Looking forward to see the rest of the build. Cheers