Roger Zimmermann

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Roger Zimmermann last won the day on March 20

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About Roger Zimmermann

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    Senior Member
  • Birthday 08/20/1945

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    US cars, red wine, sunbathing in summer (too cold for that in winter!),Fats Domino music


  • Biography
    I will be 65 years old this year (2010); I'm a male not married.

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  1. I may be late, I vote for white wall tires, even with the associated work to keep them white.
  2. I believe this is the same all over the world! When we searched a house in France many years ago, they all had a garage. Full of crap!
  3. At the end of year 1975, I bought a reflex camera, analog of course. There was a dramatic improvement for the pictures, even if the scans do not do justice to the change. During October 1974 and the end of year 1975, many improvements were done at the body. Unfortunately, I did no picture during that time. The doors were attached to the body with their hinges, the firewall was finished and it seems that the underbody was ready too. During February 1975, I began to attach the front fenders to the body with the help of a temporary bracket at the frame’s front October 1975: the body is rather complete; the front end was done in brass as well as the inner side panels from the front fenders. The last picture from the body is showing the hood open, maintained by the hinge’s springs. The frame was done some years ago, but it was incomplete: the front suspension was not yet done. They were not part from the frame’s blueprints; therefore, I probably had to look at a real car for the dimensions. The last picture from this retrospect is showing the engine on the frame; the front torsion bars are not yet done because I waited to have the weight from the model to do them. I will continue now with the “normal” report. I did a protection for the wiring; with a brass 0.4mm thick is certainly overkill, but my 02 and 03mm are gone! I still have doubts about the reliability from the window system; something which is working all the time with ease: the door locks. Their design is much better than the one from the Mark II and it was also easier to do them.
  4. In fact, I was searching a precise picture for somebody. Of course I did not find it until I remembered that I had some pictures in a folder! As you can see, the text is very short because I don't remember every step of that build, just the main ones. If I'm taking the pain to do that, it's indeed to have that build documented somewhere.
  5. With all body parts ready, the next step was logically to assemble them. At that time, I could take an incredible quantity of dimensions from a real car which was in the same town. I just had a bicycle; not very convenient to carry all I needed. The first picture from that batch, dated Sept. 26, 1969, is showing the assembled body with the plaster one in the back. That plaster unit was still in use: I carved the roof structure. The next step was to do the floor. A difficult task, accomplished probably mainly with the help of pictures and the Jo-Han scale model seen on a previous picture. The basic material is again plaster. The main problem, by working with polyester and fiberglass, is to separate the finished part when the polyester is cured. It this picture from spring 1970, it’s obvious that the separation did not go well. The floor is not yet glued to the body; it’s just temporary in place. I assume that when I took this picture in 1971 or 1972, I have got the blueprints from Oldsmobile. Most crossbars from the floor were done with brass as I had their exact shape and dimension. During summer 1973, the floor was definitively attached to the body. Inside rocker panels were done in brass too. The last picture from October 1973 is showing the body; some internal structure has been added to it. I had also the blueprints for the frame; I assume that I did it in parallel to the body.
  6. Today, I will relate the birth of that model. Some elements were already done as early as autumn 1967, like the engine and other small parts. My goal was to have a model as accurate as the real one, which means many elements would be assembled with screws. Therefore, the front fenders would be bolted on; a firewall had to be done accurately to allow that specific operation. To spare on weight, I imagined doing a core with wood in two parts: once the main body was carved and the negative molds done, the idea was to remove the front end to do the firewall at the right position. The first picture from February 1968 (yes, this picture is 51 years old!) is showing the wood core. As you can see, those pictures are small and are scanned from some B/W pictures; some will be colored ones but the colors are faded because of the age. There is some plaster on the wood at the second picture. Of course, I bought the cheapest plaster, the one for remodeling a room, which was not especially clever as this kind of plaster is too brittle. The next picture is showing the overall shape of the body; it was in April 1968. After the negative molds ware done for the doors, I carved some plaster away to shape the B pillars. The next picture from Spring 1969 is showing the carving for the hood reinforcement. When the mold for that part was done, the buck was cut to and the front end removed. This is the next picture. The negative mold for the rear of the body was done in July 1969. Finally, all positive parts are sown on the last picture. Some rework is needed!
  7. The trim was assembled on the LH door and the assembly was installed on the body, with the harness pushed into the A pillar. I began to solder the cut wires to have a functional door master switch. When I connected the positive and negative wires, I tried the LH window. It went up and down with some hiccup. Obviously, the thick wiring coming out of the door is touching the window front guide. I will have to add a protection here. There will be two more screws into the door shell!
  8. Once the wheelhouses ready, the next task was to weld them to the front fender, as shown. As noted earlier, the frame was in excellent condition. There was some surface rust at the rear of it, but nothing serious. A good friend with a truck and proper equipment to load it on the bed forwarded it to the company who did the sandblasting and primer. Of course, the good friend took it back to my shop when the frame was ready. I expected to spray the black coat outside; halas, as it is often in Switzerland, the weather was not good at all. The added logistic problems convinced me that I had to do the paint inside. I had to form a boot with plastic foil as other cars were stored inside... I have to admit that the black coat on the frame is not my best job...But, who cares?
  9. During the same period, I began the work on the front fender. The ones on the cars were not bad looking at first glance. Unfortunately, they had been "protected" with a heavy coat of underbody material. It was a stupid investment: the water flowed at the joints in the motor bay and could not escape due to the thick material. The result: rust again. With 2 other front fenders, I could rescue enough pieces to have a pair of inner wheelhouses. The separate parts were sandblasted and primed prior to assembly by welding.
  10. The string at the LH door was replaced; I modify also the tensioner similar to the RH side. The lower door’s molding was removed as I intend to sand and buff the paint under the character line; this lower part still has a strong orange skin.
  11. Thanks for the comments, Mike! Yes, it's a huge difference between 1:1 scale and in this case 1:12. What can be completely logical/practical on a real car may be impossible on a scale model. I believe the diameter from the drum is 2mm but the width between 2 walls is 1.2mm. Not very practical to run a rubber band 1mm width!
  12. The answer I gave to the suggestions from Spinneyhill and Matthew was far from diplomatic! Well, sometimes nasty answers are coming out...Just for the perspective: I'm attaching 2 pictures; one with the motor and the drum on which the string will roll on (sorry, I don't have a rule in inches) and the other one showing 2 or 3 pulleys which guide the string. As I wrote, it was out of question to reengineer that system, for that, I could/must redo both doors which does not makes sense.
  13. Good luck with the roof. It seems that trimacar gave you useful instructions.
  14. Thanks Steve for your comments! As a moderator/administrator, you cannot see or comment all treads! Interesting that you were yourself also a DSM! I was certainly not good in the beginning: it was the bad period where the engines stalled without reason, mostly in A bodies and V6. I had at that time many unhappy customers at the phone; it was not funny at all. Support from GM was...very remote. Fortunately, things improved a bit early nineties; probably most dissatisfied customers left. The quality of the products was still miserable in the nineties; there was some improvement early 2000. Right now, the quality is OK, but the customers are almost all gone. Only some fools are still buying GM US vehicles; there is no marketing, no organization behind the product. Sure, China is more promising and the number sold there is incredible; I have difficulties to understand why GM still has a minimalist presence in Europe; why not pull the plug once for all? In the early nineties, GM created an organization for Europe; I'm wondering if they just sent to Europe the most dumb people, because nothing good cam from that. An example? at the end of the nineties, they had a great idea: to promote and sell in quantity the Chevrolet Astro Van! A certainly nice delivery truck well adapted for the US, but certainly not a modern, efficient and stylish vehicle to be sold in great numbers in Europe. That stupid idea was presented in one staff meeting somewhere in Europe; that day, I destroyed my chance of a promotion when, as a Service guy, I asked if they were serious with such a stupid idea when all the Sales people said nothing! Nevertheless, the Astro Van never came. We could certainly speak for hours about our adventures with that company! As we had not frequent contacts in the US, the name Darwin Clark is unknown or I forgot.
  15. Thanks for the link, Nelson! I had a good luck with a computer or printer cable; from it, I could get many color coded wires, diameter 0.8mm. As the Olds completion will not require a lot, I'm set. I could not evaluate the outside dimeter from the cables in the link; anyway, I don't need any wire for the moment.