Wiper Motor Force

I could use a little (OK a lot) help calculating the force a wiper motor can provide. If I replace the crank arm on a typical wiper motor with one that will provide 4 to 6 inches of linear travel (each direction)and run the motor on 24 volts what will the force be?

What motor are you using?

I haven't picked a motor yet. Based on the help I get here I will pick one. If you have any suggestions I would love to hear them.

My goal is to replicate the Blue Tiger sim. I have done some preliminary design options that should work. The sim as designed is in equilibrium when I add my weight and the monitor, pedals, steering wheel.

What I need to figure out now is the motor / actuator I will need to achieve 15 - 20 degrees of pitch & roll (total of 30 - 40) with an acceptable rate of acceleration. I have a PDF file showing what I have done but can't figure out how to post it

Hope that makes sense :?

My suggestion is to look around what is available. The term wiper motor is a very broad spectrum and if I gave you an exact part number for a specific motor, the chances are very little that you find the same model. Once you know your options, you can decide what to use.

Thanks Frakk.

This is one of the early design sketches. I have made a few changes to get the CG located better and changed a few dimensions.

It looks good. I really like the compact design and simplicity! The only problem is that you can't get too much leverage with the geometry. DC motors work best with greater movements such as the Joyrider frame. You will need a high turn (high torque, low RPM) motor with heavy gearing for small movements. You can also consider worm gears.

I think actuators are better suited for what you need. SNC5 would be a great choice, and the overall cost wouldn't be too much more IMO.

The key now is to find the optimum distance (about 14 now) from CG/Pivot for force and stroke based on the loaded weight and the speed I'll need. The SNC's are pretty pricey compared to the wiper motors so I hope to figure out a how to utilize the wiper motors. I have looked at some new marine type wiper motors that are designed for moving vary large wiper systems.

I have attached what I think will be my final design. The new design allows adjusting the monitor for height and distance as well as the steering wheel.

hey there guys! I am getting ready to choose a motor and saw a whole plethora of wiper motors and power window motor unit. As my chair is gonna sit on top of a universal joint pivot, I was wondering if the power window motor (rather than the wiper motor) could do the job for me as it has some winches and pulleys attached to it already. The wiper motors I found were quite beat up and I was leaning towards the power window motors although I understand wiper motors are very powerful. I don't know much about these motors, power rating, speed etc etc.. So guys do you think the window motors can do any good for my sim? I appreciate your kind informations. Thank you.

Without any data about a motor, or information about a simulator, noone can answer your question.

There are thousands of different wiper motors, and millions of different kind of window motors. Generally window motors are slower and less powerful.

But who is going to tell if it is enough? Only you will tell us after you tried!

Thanks Frakk, but seems like you missed my point. Actually I just want to ask wheather it will be OK to use window motor if I can't get a good wiper motor (that is if anyone has already tried it because I haven't yet). I am planing to build the Simbolride :http://www.youtube.com/watch?v=3viFh5hTa6w
type sim. Before that I just want to finish with the control part and the motors.

Thanks Frakk, but seems like you missed my point. Actually I just want to ask wheather it will be OK to use window motor if I can't get a good wiper motor (that is if anyone has already tried it because I haven't yet). I am planing to build the Simbolride :http://www.youtube.com/watch?v=3viFh5hTa6w
type sim. Before that I just want to finish with the control part and the motors.

How did I miss your point? I think I answered your question of: would it be ok to use window motors? pretty good.

And what is OK? Is moving 1/min OK? Or is it OK if the motion range is 30°? You are being way too general for a direct answer, other than: it depends.

I can only repeat myself about the motors, so I will just refer you to my previous post.

Wow. Is it that bad, the window motor. 1/min.. definitely not ok. I'll go with the wiper motors then.
thanks.

I did not say that...

It was a hypothetical question. What is OK for your simulator geometry?

You might find a window motor that fits what you need, or you might not. Same goes to wiper motors.

Late to the party here .....

I'm asking the same questions basically regarding wiper motors and how powerful they are.

I'm still working out what to decide on myself.

I am researching still and would encourage the OP to do the same DC motor capabilities generally so as to be able to choose.

Alternatively, there's the experimentation approach.

I figure I'm going to need to understand the physics here if I expect to have any success with building a functional sim. That means some study.

http://www.stensat.org/projects/wiper_m ... ernals.htm

http://www.scary-terry.com/wipmtr/wipmtr.htm

http://lancet.mit.edu/motors/motors3.html

good luck

These are all great links and information!

Unfortunately it is still a guessing game to pick a wiper motor without detailed specifications. Even if they give specifications, the platform's geometry is an other huge variable in the equation.

A good rule of thumb is the larger the motor, the stronger it is. If you can turn it on before you buy, check the speed. If it is big and fast, more than likely it will do the job.

I think if wiper motors is the way people want to go they should look for a large windscreen area wiper such as those used in vans and lorry, they will all still have the similar speed capability but likely more power.

a bigger motor is good , however it will need more current to push it. I have a larger size motor on the roll frame of my sim. I have the jrk board set to 21.5amps, up from 19amps as compared to the old motor. I will look at using Aldoz relay idea on the motors so as I do not melt the jrk boards. Bigger motors - good, but need more juice.

I use a seat mover and wiper motors from a 96 nissan 200sx, they move me great and I am 215lbs. they are fast, dont get real hot and I use jrk method. these motors can be found for around 25$ on ebay.