October 5, 20232 yr Author Very interesting. You are certainly industrious; nice work! I have the plastic rack/ pulley combination since I assume the toothed belt you mentioned is made out of some type of flexible rubber-like material. Regardless, I have not noticed any dead zone in pitch, maybe because I never seem to have the need to make use of the extremes of the roll travel. I did find a lot of excess grease/lube on the plastic rack/ pulley so i cleaned that up a bit. Overall, things looked in good shape. You mentioned above some changes in electrical parts -- did you make some actual circuitry changes? Al Edited October 5, 20232 yr by ark
October 5, 20232 yr Thanks! As long as you don't feel either the dead zone or the excessive drag within your typical range of yoke movements, there's no need to bother; anyway, the Fulcrum was designed very well from the start. As for the electronics- I was not completely happy with the sensors used. Actually they are quite good: the first version is using the Hall-effect 6127 series from BL Technologies; however, they have an analog output and I prefer to have the digital- output magnetic sensors on the main axes that are completely immune to any external electrical noise. The ones that I'm typically using are TLE 5011 from Infineon; but to use them you have to re-program the controller with a special firmware which was not possible with an original Fulcrum one. So I've taken out all the stock electronics and installed the new controller based on the FreeJoy project that I'm using quite extensively for the other cockpit devices. Here are the photos of the new sensors/ controller. For sure it was a bit of an overkill, as the original Fulcrum electronics is quite good; however when I did the update and shared it with Chris he has shown me the photos of his own Fulcrum update with TLE sensors, so again we were going the same way...
October 5, 20232 yr Author 54 minutes ago, SergeyPe said: For sure it was a bit of an overkill, as the original Fulcrum electronics is quite good; however when I did the update and shared it with Chris he has shown me the photos of his own Fulcrum update with TLE sensors, so again we were going the same way... If the electronics in the yoke ever fail, the FreeJoy project looks like a possible recovery option. Sigh, with all that was possibly in the works, it is so disappointing what has happened with Fulcrum. Given the quality of the Fulcrum products I'm kind of surprised a commercial investor has not come along to help "right the ship". Thanks again for sharing all your outstanding work. Al Edited October 5, 20232 yr by ark
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