Considerations before buying wiper motors

Sup

I'm in campaign to buy wiper motors for my sim (that i'm still design it, but i'll start with chair motion only). Right now i'm figuring out what specification i need to watch out befure buying a motor. @Jun told me some considerations, like:

• Voltage: 12v because of the Monster Moto.
• Current: IDK if the Monster Moto works with 30A per motor or 30A maximum (15A per motor).
• Watts: Watts = volts * current. But it need to be a real consideration? Maybe to get the current if isn't has a specification around. I know that higher the current, the motor will be more faster and needs more electric power.
• RPM: This is new for me. @Jun told me that the lower rpm, the motor will not react at time. I dont know what RPM I need for my sim, also I dont have idea how to measure it and what's the normal rpm in a motion sim structure. Again, this need to be a real consideration?
• Gear ratio and Torque: Also new for me, but reading about it, it's very important. Without enough torque the motors can't handle the weight, and about the gear ratio, when a car is going in a uphill it need a high gear ratio to handle the torque, but how it's work here? It's crucial for any motion simulation structure? How can I be sure about that when I get a wiper motor?

As you can read, I need a lot of help here. I'm still researching (along with cheat engine to make the plugin for initial d) and maybe can I get for free some spare motors for testing the monster moto with simtools.

I hope any kind of help. For me it's kinda embarrassing for me to ask this without knowledge, that's why im here

Yes, those motors are from a wreaking yard. Maybe with a multimeter I can measure how much current will work in the wiper motor.

That motor in ebay it's a lot of money for me (even when a buy special edition video games it's not too much compared to that gear motor). Maybe I can consider buying in aliexpress, but I dont have a credit card and i cant pay with paypal.

Later i will read the link that you provided. I hope that there i can find the answers that i'm looking for

Yep, I know about the ground insolation. It will be the first thing that I have to do. And about the maximum leverage, I think that i will resolve that in the meantime when i start to test and build my sim

For the levers I use 70mm, and my motors are from two opel corsa. The movements are fine and get a maximun of 30º of oscillation. May this can help you as reference.

When I go to a wreaking yard and I talk to the vendor asking for wiper motors, he ask me "what model of car?", and then I respond "it's not important, it's for a project". But if any wiper motor could do the job, I will buy a motor with most current up to 14A, kkeping the consdieration of the gear ratio

As I saw in the wreaking yard all the wiper motors are very similar but if you don´t want to get wrong, choose them from german cars. In my litle experience are good quality motors mainly

In Chile they are mostly japanese and american brand cars. There is not too much european cars, and right now is entering very fast the chinese cars. So, i'll keep in mind to find a wiper motor from an Opel

Well, I came from a wreaking yard, and the vendor show me some wiper motors. One from a Suzuki, other from a Hyundai, and other from a Peugout. IDK about its maximum current, RPM or torque, but showing the following video he told me that any motor will do the job.



Later i'm going to buy two of these motors. If they work I'll start with the rig (design, materials, etc....), if not I'll pratice with it in simtools.

As a rule of thumb, the bigger motor size the better chance you have that it is going to be stronger (bigger magnets and bigger coils make for more power).

If the part that looks like a snail (the gearbox) and is attached to the motor cylinder is big (compared to others) it possibly means that the motor is weak...and rpm are low.

Just make sure that both wiper motors are of the same kind. To keep forces and motion as equal as possible.

And keep in mind that even identical motors might have minor differences in performance.

Some of these differences can be tweaked with arduino coding or interface program features.

@pipis2015

Can you post some images as reference??

http://www.smolka-berlin.de/onlineshop/en/kategorien/SWF_VALEO_NIDEC_ITT_gear_Motors/289?start=10

check this site ...

this video is not really a good example... poor effects in my opinion
A tuned simulator should moves accordingly to the cam: look again at the video and focus on how the vista is moving and how the sim itself is moving.

+1 use identical motors!

I'll would say: always use the same motors, they have the same specs and ratio's. Don't expect too much (especially if your over 90Kg ) balance in your design is key.

For second-hand wiper motors (with probably low RPM) and 2DOF design is there prefered desing in terms of Shoulder mount/heel mount (DX Racer)?
e.g. If I have 2 wiper motors (most probably 60:1 ratio) would I get better efferct shoulder mount or heel mount?
I suggest they have enough power but less speed.

here is the link:
http://www.bosch-ibusiness.com/boaaelmoocs/category/CEP/284/product/803
as the motors are Made in Germany from older BMW 3-class (E46)

Thanks @noorbeast . So it does not really make difference between these two in terms of effect gained?