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    1. Kit: , by (Yearly Subscriber) Roger Zimmermann is offline
      Builder Last Online: Aug 2022 Show Printable Version Email this Page
      Model Scale: 1/12 Rating:  (4 votes - 5.00 average) Thanks: 8
      Started: 07-26-19 Build Revisions: Never  
      Supported Scratch Built

      Before the Mark II was finished, I was thinking that I need some rest and maybe stopping modeling completely.
      After a few months "without", I noticed that I'm missing something. But, what to do? A new 10-years project is out of question, I need something less complex.
      After a while, it was clear that I had to do something with Cadillac. But what? The answer came rather quickly: a 1930 to 1933 Cadillac V-16 engine and frame, as a rolling frame.
      I have some contacts with people restoring the second version: 1932/33 which differs framewise from the first version 1930/31.
      I will have to do new things, like wire wheels! I searched in this forum for a tutorial, but found nothing. However , I do remember that somebody did recently (1 to 2 years) wire wheels. Can somebody tell me where to search?


      1:12 1932 Cadillac V-16 frame and engine
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  1. markus68's Avatar VIP/Sponsor
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    Markus
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    A genuine Zimmermann. :-) Great. Markus
    QUOTE QUOTE #737

  2. Roger Zimmermann's Avatar Yearly Subscriber
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    Thanks Markus!


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #738

  3. Roger Zimmermann's Avatar Yearly Subscriber
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    Well, I'm not totally ready with the carbs: I tried to install one under the manifold assembly; it's almost mission impossible to turn the bolts as the space is very tight for one bolt. Maybe studs and nuts could help, but I prefer the following set-up: the carbs will be attached with a central screw from the exhaust manifold when the intake manifold is not yet installed, plus dummy bolts.

    1:12 1932 Cadillac V-16 frame and engine-355-installed-carb-jpg


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #739

  4. Roger Zimmermann's Avatar Yearly Subscriber
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    After the carbs, I had to decide with what to continue. The choice came on the tires. There are very nice reproduced tires for those antique cars with an intricate thread. Unfortunately, my equipment is totally inadequate to reproduce most of the treads. I saw that there is a Firestone with a zig-zag thread which will be easy to do as it's very similar to what I did on my other models.
    Last week, I ordered a large piece of brass (about $ 40.00) to make the tire pattern. As you can see, the stock I got is really the maximum which can be handled with this machine. The outside diameter is 70 mm (2 3/4") and the weight 1.47 kg (3 1/4 pounds)! There will be hours removing material and almost so much waiting time as the electric motor cannot run for hours without cooling from time to time.

    1:12 1932 Cadillac V-16 frame and engine-356-stock-jpg1:12 1932 Cadillac V-16 frame and engine-pneu-firestone1-png


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #740

  5. Roger Zimmermann's Avatar Yearly Subscriber
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    It took two afternoons to get the large piece of brass to the shape it's now. Too deep a pass or higher rotation speed caused strong vibrations so it was a balance between low speed and moderate cutting deep.
    This rough element will be refined to look like a tire.
    My deepest concern was about the dimensions. The original tire was 7.50-18; those tires are reproduced as I stated earlier, but their dimension are strange. I found nowhere the correct dimensions from the thirties and the tires produced now are like overinflated with an exaggerated width and overall diameter. Why tire manufacturers are doing that now? I have no answer. Anyway, I was the "victim" of those practices when I was building the Mark II: I took the dimensions from my own 8.20-15 tires installed on my '56 Biarritz and reproduced the tires according to the dimensions I recorded. As a result, I was unable to fit the spare wheel into the trunk; I had to cut away a good portion of the thread to install it. Sure, it could also be that I did some errors and the space allowed for the spare tire was too small.
    Some years ago, a friend of mine discarded a restored spare wheel and the new tire installed over it because it could not fit the wheel well in his 1960 Corvette! Obviously, he got the same issue with an oversize tire. Strange.
    As I noticed on several occasions, it's better to have parts a tad too small in scale model construction, I will do something similar with the tires: a compromise between the theoretical dimensions and the ones I saw on various advertisings.

    1:12 1932 Cadillac V-16 frame and engine-357-rough-shape-jpg


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #741

  6. PaulPK's Avatar Active Member
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    Roger, did you super glue the tire brass to a steel shaft for machining purposes?
    Paul
    QUOTE QUOTE #742

  7. happyfreddy's Avatar Established Member
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    30 minutes time of Try & Error to log in the Forum and this thread !!!
    Since weeks poor horror

    nice work again Roger I think Your late is with this pece of brass near some end ??
    QUOTE QUOTE #743

  8. Roger Zimmermann's Avatar Yearly Subscriber
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    Quote Originally Posted by PaulPK View Post
    Roger, did you super glue the tire brass to a steel shaft for machining purposes?
    Paul
    No, Paul. I just remove the unwanted brass from picture in post 740 to get what you see at the picture in post 741. Makes a lot of chips!


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #744

  9. Roger Zimmermann's Avatar Yearly Subscriber
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    Quote Originally Posted by happyfreddy View Post
    30 minutes time of Try & Error to log in the Forum and this thread !!!
    Since weeks poor horror

    nice work again Roger I think Your late is with this pece of brass near some end ??
    I too have the same problem. For the moment, this forum is rather unfriendly!
    Sorry, I don't understand what you are saying at the end of your message. I suppose it should say that my lathe could not accept a larger piece of metal to be machined. I could not do a tire pattern on a 20" rim!


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #745

  10. happyfreddy's Avatar Established Member
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    Roger,

    I tried to correct the written word "pece" to correct PIECE but the forum software did not accept this.
    The meaning of my last sentence is that Your lathe will come to a limit in proceeding to machine this tire.
    I suppose in result this brass tire will look like the others You made for the Toronado
    As I see there is no glueing at the axle of brass tire.
    The tric is to work between the tips and using a drive plate
    QUOTE QUOTE #746

  11. Roger Zimmermann's Avatar Yearly Subscriber
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    That's correct. I could not machine a larger piece of metal! The process is the same as for the other tires; I will publish more pictures.


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #747

  12. Roger Zimmermann's Avatar Yearly Subscriber
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    The rough work is done on the tire pattern. The face towards the rear of the lathe will be refined with an hand held tool. This is the best way to get a smooth and regular surface. Because of the white wall, the other side will be handled differently.
    Pictures will be published when the forum is running correctly. For the moment, it's not possible.
    Edit: Today is not so bad...
    A third picture is added, showing the rear of the tire almost ready.

    1:12 1932 Cadillac V-16 frame and engine-358-tire-pattern-jpg1:12 1932 Cadillac V-16 frame and engine-359-tire-pattern-jpg1:12 1932 Cadillac V-16 frame and engine-360-tire-jpg


    1:12 1932 Cadillac V-16 frame and engine
    Last edited by Roger Zimmermann; 12-05-21 at 08:13 AM.
    QUOTE QUOTE #748

  13. MODEL A MODEL's Avatar Yearly Subscriber
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    Hello Roger! -I guess all of us have been having trouble logging on? THANKS FOR THE FIX !!!

    Regarding your lathe and it's limitations? I should remember, (I used to sell them) but is the lathe head attached to the bed? -If it's not you could create spacer blocks to increase your turning capacity. Remember a spacer of X thickness will add a capacity of 2X to what you can turn.

    Also, instead of Brass, you could turn Acyrlic, (PlexiGlass), or a cylinder of any number of other material. Automotive body filler? Plaster? Ren board. , . . . .
    -craftsmanship is a lifelong project of
    self-construction and self determination
    QUOTE QUOTE #749

  14. MODEL A MODEL's Avatar Yearly Subscriber
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    Very nice to see your work again! I was afraid the forum was going to be down for a long while.

    Very happy to be wrong!!!
    -craftsmanship is a lifelong project of
    self-construction and self determination
    QUOTE QUOTE #750

  15. Roger Zimmermann's Avatar Yearly Subscriber
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    This is correct, Don: the lathe head is attached with two screws, easy to remove. However, the spacer alone will not solve all problems: the tail stock must also have a spacer for my application and suddenly, there is not enough space between the rotating part and the tool post/saddle!
    With my tire pattern design, I must attach the band for the thread. With the main part in brass, I can soft solder them, even if it takes a very long time. With another material, I can glue them, but I'm not comfortable with glue.
    Anyway, the forum is now functioning the way it should; maybe this will increase the traffic!

    The tire pattern main element is ready. Most probably, by looking at the attached picture, you will not understand why the front of the tire has this strange shape. This is my way to add the large white wall: it will be a separate element pushed into the black rubber. I did the same with the Mark II's tires with one major exception: the tire's name will be on the white wall. For the Mark II, I did a negative mold and I could directly do the white elements. As I cannot engrave the tire's name into the brass, I will to make a positive form; with that done, a negative mold can be created. It's just one step more...
    For the moment, the next step is to add the profile on the thread.

    1:12 1932 Cadillac V-16 frame and engine-361-front-jpg


    1:12 1932 Cadillac V-16 frame and engine
    QUOTE QUOTE #751

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