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As heat is a problem for bellcrank linkages, there are different versions available in Germany. Heat expansion makes the bellcrank opening the throttle a tad bit. There are ways to avoid that. You can get specially done linkages for (sometimes horrible) high prices here in Germany. For the Type 1 with original fan or for the Type 4. It works pretty easy with decoupling ball ends, where the pressing rod sits loose inside. When the engine getting hotter, the rod pushes itself a bit out the guidance of the ball end. Personally, I like the CSP version as it is working well and pretty cheap. Heat expansion is not a very big problem!
That's all! I know, my English is not as good as it can be, so maybe it sounds funny, what I've written there!
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