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Hannes

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  1. Hannes
    Thanks , dear Olivier ! Yes It´s a long trip and it all began when I entered the gangshow thread . I never expected that this kind of resonance would follow ! And I´m still learning and try to improve . I guess that ´s what keeps us young in our minds .It´s still an adventure to unravel the unknown .The realization is not the most difficult part , it´s the investigation which requires persistence . All the best ! Hannes
  2. Hannes
    Both frames are not directly connected with the bodywork´s alu skin .There´s always something between because all walls are curved and the slanted rear frame cannot get riveted without adjusting parts . This second frame´s construction is very interesting : It´s embedded in the ( welded ? ) bulge of a plate / thick sheet .The bulge of the plate covers the O-shaped frame which is a a bit smaller than the frontal O -frame . In my opinion this plate had two extensions : A smaller one for the support of the cross-beam ( 8cm left of the center ) and a big one for the suspension of the steering column . Both supports are hidden behind that plate . These kind of plates usually included the dashboard . In our case there´s a separate dashboard between bodywork and fairing , that´s why this construction is smaller than usual imho . Many greetings ! Hannes
  3. Hannes
    As promised some magnified pics of drawing 2 Two important observations : -The horizontal crossbeam between the two frontal bodywork frames is situated on top and therefore in the center of the car .It´s duty most likely was to stiffen the construction and to carry the heavy magnetos . As we all know the 406 engine was shifted about 8 cm towards the left side , that´s why a central position of this profile would make no sense . As the silhouette of the left magneto indicates the crossbeam should be situated between and above the two magnetos . The fixation is still unclear for me .There´s a slanted construction at it´s rear end that probably holds the magnetos ( including their support sheet ) in place . -The tube ( s ? ) below the oil tank with the 4 cramps seems to be connected with one or two lateral sheets ( maybe a rod or small tube construction ) probably for cooling purposes . I hope these pics are helpful , especially for our friend Harvey ! Many greetings ! Hannes PS : Dear Roy ,if you read this : Maybe a publication on the opening post would be useful . Many thanks !
  4. Hannes
  5. Hannes
    Thank you , dear Harvey ! I had similar thoughts as well , that´s why I ordered some L-shaped brass profiles from Knupfer . The suspension of the steering column should look similar to the 805 racing car as we can see on the pic I posted on your thread : Two hanging profiles and an U-shaped plate with a hole . A L-shaped construction could help to connect these profiles with this frame . However , it´s not easy to realize it because the column must get adjusted of course . A " glue first ,screw later "-tactic most likely will be the best proceeding ... Many greetings ! Hannes
  6. Hannes
    The big heat wave is gone now , it´s time for continuing with my construction . First of all I slimmed some walls and especially the edges of my bodywork . The first support frame which is also the support for a firewall now is in place . It´s a 2 / 2 mm brass profile ,glued to the bodywork by 2 c epoxi and secured by 3 dovels . The second support frame which holds the steering column will be a more difficult task and I don´t know yet how to represent it . It looks quite complicated on our drawing 2 and I think about a somewhat simplified version . Maybe a look at similar slanted constructions in other racing cars could help to solve this problem . If someone knows more , please contribute ! Hannes
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  8. Hannes
    Dear Harvey , I like both your work and your selfie ! I think , we´re similar kind of guys : Older craftsmen who stayed young at heart ! And who experienced more interesting periods of time compared to today .But our hobby gives us a lot of compensation and consolation ! All the best ! Hannes
  9. Hannes
    It´s just beautiful , dear Harvey ! Your oil tank looks great especially in combination with the other very convincing parts. I like it very much ! Hannes
  10. Hannes
    Some could say : But we already can see this gap on early drawing 1! That brings us back to the questions regarding drawing 1 ´s origin and it´s statements . I think we agree that drawing 1 was originally a plan for the version with the 451 2-stroke engine .The silhouette of the engine with no tub for the oil pumps and the height and lenght of the bonnets are clear indications . This version was drawn by a good and professional draughtsman if we look at some details . A second draughtsman who was way less professional altered this drawing according new developments . Who was this second draughtsman ? Most likely he was an engineer who wanted to stay up to date . In my opinion it was the engineer Alberto Massimino ! His name was not Leonardo Massimino as we can see if we look at details like : - new drawn spokes on the rear wheel ( way too thick ! ) - hand-drawn outlines of the rims and cam fairing - an oversized exhaust system with no branches and some other slip-shod represented corrections and alterings . In my opinion this gap was " drawn " after the panel was removed in reality . Most likely Massimino used this old plan as long as no newer version existed . We always have to keep in mind that there was an enormous time pressure at the beginning of 1927 when it was clear that the 451 could not get used and the 406 engine required a lot of alterings ! Most likely a new drawing was made ( and a lot of detail drawings as well )during and after the alterings . This new drawing most likely was the predecessor and the pattern for the later drawing 2 imho . Many greetings ! Hannes
  11. Hannes
    Many thanks , dear Nick ! My favorite is Nr. 4 ! Which panel was removed ? In my opinion there could have been a panel over the gap between bodywork and rear engine suspension . ( on the left side too ! ) I don´t think that the panel in front of the suspension( with louvres ) was removed . Seen from an aesthetical point of view these gaps don´t fit to the otherwise compact design imho . Very interesting ! Maybe the retouched photo 1 was not too far away from truth before the test runs started ... There must have been a reason why this photo was retouched at that time ! What do you think ? Many greetings ! Hannes
  12. Hannes
    A Molotov cocktail with alcohol ! Olivier , I knew it : You are an anarchist !😁 Many greetings ! Hannes
  13. Hannes
    That´s a very credible representation of an oil cooling system ! In our days with modern oils the temperature of oil should not exceed 150 degrees Celsius or else a cooling is required . But at that time the quality of the oil was lower and a measured temperature of 79 degrees on the Monza circuit could possibly point into the direction of an oil cooling system . The oil should also lower the water temperature a bit ! It looks great ! Hannes
  14. Hannes
    Now only the single side - view of Nick can be seen . I´m a bit confused .There was a whole archive behind this pic . Hannes
  15. Hannes
    Sorry ,wrong expression . Please contact Roy ! Hannes
  16. Hannes
    Dear Roy , thank you . Nick also put the latest elaborations in this link , that´s why it´s not outdated ! But if it´s still in the archives , it´s OK Many greetings ! Hannes
  17. Hannes
    That´s very kind , dear Roy ! Thanks a lot! But Nick´s very important collection is missing now ! Please put it in again . Hannes
  18. Hannes
    Dear Harvey , I agree regarding the pressure oil pump. I also think that these magnified drawings will help both of us ! Maybe Roy could put it on the first page once I had posted them . Today I´m too knocked out by the heat for doing these works . I slowly start to believe that the sun is just another refugee from Africa !🌞 Many greetings ! Hannes
  19. Hannes
    As we can see magnified copies of a good version of drawing 2 are helpful for judging details . I will do the same with the rest of the two drawings in the next days . The video is very interesting as well because it answers some questions . Most likely the frontal tank was a breather tank and the two oil pumps look very similar to our version . It also shows how modern this kind of dry sump lubrication was at that time ! Usually the two pumps were situated in different places ! Many greetings ! Hannes
  20. Hannes
  21. Hannes
    Dear Harvey , unfortunately the posted pic is not as clear as the original in the Rogliatti article . There´s no doubt for me that a piece of metal is firmly connected with the shaft and sandwiched betweeen two parts in the region of the main cross-member ( or the beginning of the oil tank .) If you want to see a prove I could magnify this region and post it tomorrow . Many greetings ! Hannes
  22. Hannes
    The versions of drawing 2 in the Rogliatti article seem to be better than some versions on page one . Here we can see that the small construction in front of the oil tank is not a connection for a pipeline . It´s a sheet or similar that connects the shaft of the brake booster´s lever with the main cross-member . Don´t ask my why because I don´t know ... Maybe it´s a system for a limitation of the lever´s rotation . Regarding the oil pump . In the Rogliatti article it was described as " very big " . The oil pump is situated in the deepest region of the engine , where the cooling ribs extend downwards . This pump was situated in the low center of the engine and our engine drawing 6 seems to be wrong ! ( situated behind the left crankshaft ! ) If it was situated on the left side , the extended cooling ribs should be situated assymmetrical as well ! But they are not ! It´s hard to believe that there only was a single pump and I wonder where a second pump should hide .Maybe two pumps in a big one ? Many greetings ! Hannes
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  24. Hannes
    Thank you , dear Harvey ! I hope the big heat will be over soon ! BTW : I learned that the price for a cat GPS-transmitter has decreased to about 30 Euros : Many greetings ! Hannes
  25. Hannes
    Dear Harvey , I agree with your observations .At the rear end the first additional tank is horizontal and there´s something between the bottom plate and the tank . It could be a connection to a pipeline . Regarding your first observation : The pressure pump most likely was mechanical driven and I could not yet spot where it was situated .The suction pump is situated near the crankshaft case as we can see on our engine drawing . In my opinion the pressure pump must have been connected with the engine by a rod or integrated in the engine´s gear system like the suction pump .Most likely it didn´t matter where exactly the connections on the oil tank were situated ( low for the exit , because of the oil level of course ) because it was a forced circuit .Your observation of the connection towards the pressure pump seems to be realistic imho . In this system with two pumps the suction pump always should be more effective than the pressure pump because it´s important that the oil tank gets refilled under all conditions.( fast driving in curves for instance ) and the oil/air mixture has a greater volume than pure oil . On the pic of the Bugatti dry sump system ( page 199 ) we can see 2 pipelines on top of the oil tank . In my opinion one pipeline was used for the oil coming fom the engine by the suction pump and the other pipeline was a gas evacuation tube for bringing back the gas into the air evacuation system of the crankshaft case .For an engine with a compressor the feedback of air /gas makes no sense imho , therefore the n-shaped tube was used for the air evacuation . I also wonder if the big tube which we can see between the brake booster and the magnetos was situated on top of the gearbox and why . Many greetings ! Hannes PS : By this GPS-system we found out that our little cat walks about 5 km each day and we also can print out her whole moving pattern , if she crosses dangerous streets or not . Every 5 minutes the satellite measures exactly where she is . It costs about 5 Euros a month and the box about 100 Euro .But it´s worth each cent because our neural system is way more stable now than before !😌
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