Penny Pusher Machine...

[kme]

I like that idea Andy.

Ad. Other options are an old-type washing machine / spin dryer motor; with a variac-type supply. Failing that, let it run at full speed; and gear it down - reducing the speed and increasing the torque at the same time.......

In order to work the piston; the ideal would be a flywheel with a long slot running radially, with a bolt to fix the cam bar - you could also then alter the length of the piston stroke, by moving the con-rod to the outer edge for a longer stroke, or near the shaft for a shorter one. You with me so far?

Dropper resistors could be used to fix a speed - though they`d have to be fairly meaty things. You want a thyristor or triac fired control, which would provide modulated pulses of voltage. I`m just trying to think of the easiest way to provide that.......

The cordless idea isn`t bad, except that you`d have to find a way to "lock" the trigger at the precise position needed - and they aren`t designed for semi-continuous use!

thinking..........................................

 

[Andy™]

for trigger, maybe a fixed nut and adjustable bolt to screw in/out for speed, and a main switch before to control on/off. make larger holes in side for ventillation, and if used at a slower speed than max, it would probably last a long time

 

[a1]

B-I-L was saying he will probably get a "Barbeque Motor". He has apparently seen ones that are adjustable.

 

[Andy™]

B-I-L was saying he will probably get a "Barbeque Motor". He has apparently seen ones that are adjustable.

that should work

 

[kme]

concur with my esteemed colleague, as long as you can generate enough torque without stalling!!

 

[nic00b]

Use a servo motor with a rack and pinion to provide the linear movement...The rack will be the table in which the 2p's will sit on

Just a quick thought

 

[a1]

He was thinking of using a Windscreen wiper motor. He said that he was talking (Online) to someone who used a "Ford" one. Apparently there are two screws on a cover plate, undo those and turn the motor - this controls the speed on it.

 

[nic00b]

IIRC wiper motors have different connections for different speeds...I may be wrong

 

[a1]

This is going the opposite way to the way B-I-L wants it but it looks good to me - B-I-L has been popping on here to check.

[YT]

https://www.youtube.com/embed/Vtk5Qy3lYKY?feature=oembed[/YT]

 

[kme]

Use a servo motor with a rack and pinion to provide the linear movement...The rack will be the table in which the 2p's will sit on Just a quick thought

Yeah, but then you`ve got to deal with drivers and associated male cow poo.

His BIL, I don`t think, wants to get into the finer points of servo motor driver control.

 

[Doc Hudson]

This is going the opposite way to the way B-I-L wants it but it looks good to me - B-I-L has been popping on here to check.[YT]

https://www.youtube.com/embed/Vtk5Qy3lYKY?feature=oembed

That looks like a nice little winters evening project for you to knock up in your workshop Admin. The question is, why does your B.I.L want a penny pusher? Is it just for personal use at his home or an actual real machine for strangers to deposit their money in?

Doc H.

 

[a1]

He wants to do it as a project for his Son for home use only.

 

[a1]

Yeah, but then you`ve got to deal with drivers and associated male cow poo. His BIL, I don`t think, wants to get into the finer points of servo motor driver control.

Correct.

 

[Apache]

He wants to do it as a project for his Son for home use only.

A way of getting some pocket money back?

 

[Andy™]

[No message]

 

[a1]

Apparently, He has made a start on it.

I have asked him to take "Before, During & After" pictures of it.

Hopefully, he will agree to show them on here,