Lieberman question

[Yultanman]

Ive got my frame tacked together and the rolling bed shaped. Im going to have the moving arms extendable to raise and lower the rolling rod.

My question is: are there any items i should take into consideration when choosing a diameter for the rolling rod ?(that goes across the bed between the arms and pulls the loop)

many thanks

 

[MarcL]

I'd say about less then an inch. I could measure mine. It sounds like you have a arched rolling bed? Are you working from a design that we have seen? Does your design utilize the length of the mat to measure ring gauge? Why is the rod arms extendable?

 

[Yultanman]

Yes it is an arched bed modeled. I was planning the extendable arms mainly because ive never seen an actual machine and wasn’t sure how much clearance over the bed i would need.

 

[MarcL]

I see. The only clearance between them is for two thicknesses of mat. The length of the mat is what measures the ring gauge. Let me find some images.

 

[deluxestogie]

The pivot of the swing arm is the radius center of the arc represented by the curved mat bed.

Bob

 

[Yultanman]

Thanks guys. Ok im going to try maybe a 3/4” roller.
And ill be adding a rod to use to adjust the mat length.

The pivot of the swing arm is the radius center of the arc represented by the curved mat bed.

Bob

Hopefully my measurements got me close to this

 

[MarcL]

This one measures 0.80 or 20.5. I have pix.

 

[MarcL]

more pix?..

 

[Yultanman]

Those pics are really helpful. Im worrying now that my be may not bed sturdy enough. That looks really heavy duty. I may have to weld in some supports or something.
Hopefully ill get to do a little more work on it tomorrow.
Thanks again for the help

 

[MarcL]

 

[MarcL]

I believe my mention of the rolling rod needing to rotate is not needed.

 

[Knucklehead]

I believe my mention of the rolling rod needing to rotate is not needed.

Does your current one roll? My wooden King Roller is extremely difficult (near impossible) to use unless I turn the roller as I push it, but mine has no mechanical advantage.

Mine is like this but for a longer table for cigars.

 

[MarcL]

Does your current one roll? My wooden King Roller is extremely difficult (near impossible) to use unless I turn the roller as I push it, but mine has no mechanical advantage.

Mine is like this but for a longer table for cigars.
View attachment 34534

Yes. Having to rotate the handle in your hand while sliding it was not designed by a users mind. it looks difficult on video.
How many times do you have to turn that thing around to get to the other side? I'll guess 37.

 

[deluxestogie]

@Knucklehead, attach a wheel or disk to one end of the roller. Make it as large as will fit without touching the table.

Bob

 

[MarcL]

Does your current one roll? My wooden is extremely difficult (near impossible) to use unless I turn the roller as I push it, but mine has no mechanical advantage.

Mine is like this but for a longer table for cigars.
View attachment 34534

So, this is not the one you have? Is it one of these and would it work if the handles rotated?

 

[MarcL]

 

[Yultanman]

I believe my mention of the rolling rod needing to rotate is not needed.

you would think but I’m glad you mentioned it because i wasnt sure and probably would have asked just to verify.

 

[Knucklehead]

So, this is not the one you have? Is it one of these and would it work if the handles rotated?

Mine has the same bed size but without the brass mechanism. Mine is not hard to push as long as you are rolling it. Trying to push the rod forward without turning it is extremely hard because the rod is gripped by the friction created by the fabric, but if I turn it as it is pushed forward it is fairly easy because it overcomes that friction. Just a little bit of rolling action makes all the difference. Basically you are working with the fabric rather than working against it.

I should also note that mine is new and not broken in. It’s possible the rod may just slide along without a rolling motion once the fabric is broken in. Time will tell. But currently, a slight roll and it glides, no roll - dead stop.

 

[Knucklehead]

That was a long winded explanation. A simpler explanation would be that when I’m not turning the wheel as I push the rod, it’s like the brakes are on hard. A slight turn of the wheel as I push and it’s in neutral with the brakes off. Easy Peasy.

 

[deluxestogie]

So, not like a coaster brake on a Schwinn, but more like a caliper brake against the steel wheel rim in a rain storm?

Bob