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Post by Trip Rodriguez on Jun 8, 2017 10:55:31 GMT
I use lead solder and have a somewhat decent soldering iron, I should get some good flux though.
Unfortunately I'm still having problems with that pesky #4 after fixing the wiring. After many hours of testing I'm sure there is still a problem in the board that I had previously damaged through my own clumsiness. I emailed you about it Thanos. I hope to be back in the (virtual) air soon, two months feels like forever! =(
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Post by Trip Rodriguez on Sept 2, 2017 12:11:38 GMT
Hey guys, I'm trying to figure out the best way to eliminate backlash from the gearboxes. I'm aware of the spring mod and tried something kinda similar but now I'm looking to think it through and experiment. Part of this is I don't feel like I can put springs on strong enough to keep the backlash in check by holding the platform UP against them, so I went with springs holding DOWN against the arms. I did this by attaching springs from the upper hex corners down to the floor. This wasn't enough, but I'm now going back to my smaller lighter cockpit in hopes that less inertia will help. I was thinking last night that when this really started annoying me was around the time I went to the large cockpit format.
First order of business is trying to think my way through whether springs of a given strength would have more ability to fight backlash if attached at the torque arm or at the platform. I'll probably figure it out, but if anyone has any input on the math etc. let me know.
If anyone is unfamiliar with the problem it is this: Due to backlash in the gearbox, when the platform rapidly starts moving the opposite way it was moving previously the loading against the arm reverses and you get a bit of a sharp bump when it finishes crossing the backlash.
This is something that probably doesn't matter too much for racing sims, but for flying I find it very irritating. Just so we are clear, the issue is caused by the gearboxes, not by anything else.
Trip
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Post by Trip Rodriguez on Sept 2, 2017 12:24:20 GMT
Ok, I'm thinking I need to figure out a way to install the springs to pull the torque arms DOWN at all times. Opposite the spring towers solution others have used. This is an issue because the floor is in the way!
Don't anyone get too carried away trying to find an answer, I have to test it with the small cockpit and my existing spring solution. Reducing the mass and lowering the CG of the seat platform might be all that I need to do. For that matter getting the CG centered forward/back might be all I needed, it was way forward with the big cockpit to avoid hitting the wall behind the sim.
Still I'd like to explore this in case I decide to go back to a full cockpit setup in the future.
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Post by tronicgr on Sept 2, 2017 13:16:35 GMT
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Post by Trip Rodriguez on Sept 3, 2017 3:41:33 GMT
Thanks Thanos, I just did some reading there and I think his problem is different from mine. The backlash causing my problem is inside the gear boxes. Here is a very short video clip of me moving the torque arm back and forth to demonstrate. This gearbox is the worst of them, but they all have some. youtu.be/aFRimiyzzBcI have no backlash of sensor to shaft.
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Post by riton39 on Sept 4, 2017 16:59:59 GMT
I have it on my gear. It is the "normal movement" reducer gears. "
If the load is always pressure on the gear, there's no too many problems
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