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Post by mel62 on Feb 11, 2016 12:32:51 GMT -5
I decided to get a shell made which is one I have always liked without properly considering the complexities, so this has been a bit of a learning curve. Long story cut short,here are the prototype shells. With the exception of the screen and decals, what you see is what you get WYSIWYG. Here is an individual shell without all the bits on and prior to prep. Now comes the difficult part which is fitting all this onto a Policar chassis that Andi sent me.
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Post by mel62 on Feb 11, 2016 13:12:48 GMT -5
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Post by old23 on Feb 11, 2016 17:37:00 GMT -5
Nice work, Mel. When will the Ferrari be available on the Pre-Wing website?
Regarding the 3D printed front end, I assume it is a cut down piece from one of Andi's projects to retrofit the Policar motor/transmission pod to either an SRC or Fly F1. Which one did you use? Whichever it was, you must have had to cut away over 50% of it to fit your shell, including the front axle mounts. What Policar really needs to offer is some kind of "universal" narrow chassis front end with adjustable wheelbase, don't you think? I'd prefer an inexpensive, strong plastic piece from Policar/Slot.it rather than a relatively expensive and fragile 3D printed piece.
How about it, Andi? Any chance of that happening?
Stewart
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Post by Deleted on Feb 11, 2016 17:59:18 GMT -5
I would just make my own double geared back end in a brass chassis. I have often considered it over the years, but not being an F1 fan I couldn't be bothered. It's only another shaft, like I'm doing in the very fiddly confines of my Bloody Mary model, with belts!
I don't design body masters for particular chassis. If you can wangle a favourite type/make in...great, but my concern is accuracy of body shape and size. I assume people can make their own chassis. Heaven knows it ain't rocket science!
I would counsel care over the material choices used in these 3D printed chassis parts. I had several splits/breaks in another one, but it was changed immediately. Excellent service, but worrying characteristics of the nylon-ish stuff from which they're made.
Martin
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Post by Andrew Rowland on Feb 12, 2016 9:22:32 GMT -5
Hi Stewart You need to be looking here: f-one-thirty-two.proboards.com/thread/727/policar-f1-universal-chassisThat was something I came up with a long time ago. It will need cutting down and that is what Mel has done. I sent him a 3D printed sample so he can show how it works in this build. The idea all that time ago was that Policar would produce them in injection moulded plastic but clearly there was little point in doing so until the gearbox was actually on the market. So now Maurizio is evaluating whether and when it should be injection moulded or indeed whether instead that would not be economic and I should just sell them as 3D printed parts direct. We should know fairly soon. In the meantime the only option is to use the Policar Lotus 72 chassis (cheap) or one of the Shapeways printed chassis (less cheap) and adapt the wheelbase by cutting and shutting. I hope that answers the questions. Clearly the universal chassis is designed to fit a wide range of cars so is wide but can easily be cut down as shown in the above linked thread. Cheers Andi
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Post by Andrew Rowland on Feb 12, 2016 9:27:18 GMT -5
Just to be clear the Policar Gearbox itself is not 3D printed. It is extremely rigid injection moulded nylon. Just in case someone interpreted Martin's post as such.
Cheers Andi
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Post by Deleted on Feb 12, 2016 10:59:41 GMT -5
I meant the white bits, Andi, not the gearbox end.
Martin
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Post by Chris Wright on Feb 12, 2016 11:26:58 GMT -5
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Post by old23 on Feb 12, 2016 11:52:19 GMT -5
Thanks for the response Andi. I had completely forgotten about that thread from almost a year ago despite the fact that I had actually responded to it at the time with a post! I must be getting old and forgetful. I do hope that Maurizio concludes there is a business case to offer the universal chassis in strong plastic at a reasonable price. It would offer an excellent alternative for those who are more comfortable working in resin and plastic than steel and brass.
Stewart
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Post by Andrew Rowland on Feb 12, 2016 12:54:55 GMT -5
I meant the white bits, Andi, not the gearbox end. Martin I know YOU know that Martin, just making sure anyone less versed in the world of materials also get it! best wishes Andi
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Post by mel62 on Feb 12, 2016 14:56:03 GMT -5
Well moving swiftly on, I added a few bits and got this far ..and then I thought, why not add a few more bits and make it red whilst working out how to add the rear suspension. This pic is where I made templates for the roll hoop, the wing endplates the headrest etc for the kit instructions and then tried painting the white bits which went belly up as it was too cold. Now I am back working on the rear suspension again since it is fiddly to add it. If I can do the front then the rear has got to be easier right? Incidentally as you may have noticed, the front axle is now a 1/16 wire and the wheels shimmed down. I tried the original front wheel inserts and after taking off 0.5mm with a gentle bit of sanding they are fine. More driver work to go, but we are getting there. The decals supplied with the kit are for the 1970 Belgian GP, so I need a couple of March 701s please Andi.
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Post by Deleted on Feb 12, 2016 17:47:40 GMT -5
Are they the Policar rear wheels you mentioned, Mel? Is it me or do they seem a bit close to the bodywork? As in the rear track is too narrow? I dunno, it's an F1 car.
Martin
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Post by mel62 on Feb 13, 2016 3:47:55 GMT -5
They are the Policar wheels but just a loose fit as I am figuring out a reasonable representation so not even screwed in place. Thanks to Andis picture, I have a view of the rear suspension to study. So almost a Lotus 25 type suspension, which reminds me, I must finish the 25 vn 2 build.
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Post by Deleted on Feb 13, 2016 4:53:51 GMT -5
They look huge compared to the fronts!
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Post by pilot70 on Feb 13, 2016 10:27:49 GMT -5
Mel,
fantastic build, I am eager to see the 312B finished, it is a wonderful car.
Daniel.
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