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! =(
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.
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.
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.
dureiken: Hi there, it's really quiet here someone could help me for my 6 dof project ? thanks a lot
Aug 8, 2017 15:34:46 GMT
tronicgr: dureiken Hi, Open a thread and I'll try my best to help. A little busy with Kickstarter details at the moment but I'll see what I can do.
Aug 12, 2017 11:57:42 GMT
dureiken74: I just did it
Aug 27, 2017 11:59:06 GMT
fimmy: How's the firmware going?
Sept 6, 2017 8:34:43 GMT
tronicgr: @fimmy I had to put it on hold to finalize the manufacturing of the new kickstarter controllers. I tested parts of it to ensure compliance with the new features and looks good so far. I'll get back to it soon for integration.
Sept 9, 2017 12:52:35 GMT
Theuns: Very nice design.I'm also busy with mine and changing it also to Linear Actuators with 220v Servo motors.I'm waiting for my new controllers from Thanos. If I may ask Do you have any Sketchup files of your design and willing to share it I Thanks Theuns
Sept 14, 2017 22:45:09 GMT
atayeu: Hey everyone! I'm reading up and gathering all of the intel I can find for my first motion platform. this is by far best information for creating one.
Oct 14, 2017 7:25:57 GMT
tmcnam: I must be crazy but I still can't find the blueprints to the platform by GA-Dawg. Any help would be appreciated. Thanks guys.
Mar 10, 2019 21:31:57 GMT
Trip Rodriguez: Sorry tmcnam, the shoutbox doesn't get much attention. Did you find the blueprints? They are at the VERY bottom of the extremely long first post. It says "attachments: 6DOF.zip
May 4, 2019 19:13:25 GMT
zivby: How much weight this setup can carry?
May 19, 2019 11:57:16 GMT