yobuddys motion simulator

yobuddy,

Bear in mind I am coming from a 3DOF tripod configuration perspective and it therefore may have little relevance to you.

You may be lucky. The amount of grunt my motors put out are capable of chassis twist. Scaled down to windscreen wiper motors and the pots may survive the thrashing!

With wiper motors hopefully you won't have to slightly increase the PWM duty cycles to maintain a 'balance' when you want to hold a position. This is where the pulsing is most prominent.

What chair design are you using?

evanF

I posted a new video of the torture chair up on youtube the other day.

www.youtube.com/watch?v=QGZ6I4XaXIM

I guess I didn't word my question correctly. I mean, are you using a blueprint design? I'd like to make a frex style too, to compare, but can't seem to find any plans.

Have you tried to get some mobility scooter motors? They are awesome and very powerful. If you like I could post some pix up.

The wiper motors should have some hold of their own even unpowered but in your case that they move like freewheel, I think that they still provide some hold.

Besides the PWM signal will always try to keep the last position commanded. In worst case they will positioned a little lower if loaded.

Thanos

Real nice frame... I think your simulator is gonna be awesome. I'm following it for a while now. Keep up the good work.

yobuddy,

Nice work...... those T-shots sure looks nice....certainly looks like everything should work fine.

I think you might be the first auto rotary motor frex system with a metal frame.....seems like you have been making a lot of progress fast....Keep up the good work

Regards,
Kyle

Yes, impressive framework!

What is the stroke length? Can you measure the max degrees on tilt for left - right?


Thanos

Good job!

Perhaps you should reduce the with a little someday. But that are just cosmetics...

Do the motors hold position while sitting in the racing-seat?

Btw, where is this seat from? Could you name a brand?

ego

Hi guys,

I'm trying to find all the parts that i need to build the frame. I'm going to weld it of 30x30x2 steel profiles. What i am looking for right now is the pots, but don't know wich ones i need. Going to try and build Thanos's avr-controller also. And what gears do i have to look for? I'm ordering it at http://www.conrad.nl. If the have what i need ofcourse.

Hi Youbuddy, I bought these and have used them for a while now:

http://no.farnell.com/jsp/Passive+Compo ... tid=134893

So if i understand you'll need 50k potentiometers?

50K pots are ok.

Generally pots with values 50k to 250K will work fine with my AVR controller...

Thanos

Yes, works good for me :wink: Exact value is not so important. 10k to 100k is also usable. Depends on what pot is available for you. If you go way out of this range there is either to much current flowing trough it or to little. Influencing on resolution and noise imunity.

Thanks for the help so far...

I'm glad that i have found this site. The idea of building a race/ flight simulator was already a long time in my head, but the knowledge of hard and software, like x-sim and tronics controller, is too poor.

So with the help of the people on this forum i can start my own project. You guys already have helped a lot. Learned a lot about actuators, eletronics and all the other kind of stuff with what you have to deal with when you want to build a simulator. Thanks for that. Its very interresting and can't wait to build and experience my own simulator.

The first idea was a rock 'n ride like simulator on pneumatics but then i saw the frex and the way of simulation that they use and realised, that it would be the best setup to simulate a car, i think.

I have chosen for a mix of simhawks sim and yobuddys sim. Frex like setup with the shiftpots that simhawk uses and the wipermotors like yobuddy, but frame out of steel profiles. And ofcourse i will need the tronic avr-controller. But first the frame...

I will post my project when i have some pictures.

Hi Yobuddy. Thanks to EgoExpress I am taking a very keen interest in a Frex type motion simulator using Tronicgr's AVR Controller. The idea of using wiper motors over expensive electric actuators is of course appealing.

What are the electrical specifications of the average wiper motor ? I know that someone mentioned using 24V motors from an electric wheelchair/buggy but these are not so easily available second-hand. One thing that I have thought of is the sudden proliferation of small electric scooters, a lot of which will get sidelined once broken or the rider has fallen foul of the Police. I have seen both 12V motor and 24V motor versions of these.

Might these motors be suitable for this type of project ?

@Roadster2
You're not wrong, I have accumulated 4 scooters paying only (on average) $15 for each of them. 2 at 12v/100w and the other 2 at 24v/100w. The 12volters draw over 20amps at stall. Good way to buy cheap 100w motors but they do not have internal gearing and the pulley assembly is too light for heavy loading. I also managed to score a 350W scooter cheap which does have some grunt.

I have an electric scooter 'how to mod' video on youtube which I used as a basis for my research on mosfet motor controllers.

http://www.youtube.com/watch?v=PWM6UdB4QbI

Hope it helps you.

EvanF