Bent Arbors

[dmorrow]

What are some techniques for straightening bent arbors?

thx.
Dave @ Olde Tymes

 

[dmorrow]

What are some techniques for straightening bent arbors?

thx.
Dave @ Olde Tymes

 

[doug sinclair]

Dave,

You have posted this question twice within 30 minutes, both times on the Clock Repair message board. It is probably sufficient to post this just once. If you are not getting any answers, and you wish to keep your post at or near the top of the message board, simply return to your original post, look for the REPLY button on the bottom right of your most recent post, click on it, and then add the message "refresh", or "top", or words to that effect.

 

[shutterbug]

Dave - Timesavers makes a little device just for that purpose. The main consideration is the temper of the steel. If it's tempered it will break. You have to heat it to red, let it cool, do the bending, heat it back up and cool it fast in water or oil to reset the temper.

 

[Mike Phelan]

My two arbor straigheners are either two Pairs Of Pliers or a Mk1 Finger And Thumb :biggrin:
I would take care making arbors glass-hard after annealing - they are brittle and can shatter. If you must, then temper down to a blue.

 

[bangster]

I presume we're talking about a naked arbor --wheel and pinion removed. Otherwise, trying to anneal it could get fairly gruesome, couldn't it?

bangster

 

[Peter G Mitchell]

Dave,
Do you have a lathe ? if so put the arbor in a chuck almost up to the wheel, turn the lathe by hand sighting the end of the pinion against the "T" rest, tweek with thumb until running true, then gradually draw the arbor out of the collet repeating the process until you are at the end of the arbor, do the same to the other end of the arbor if necessary.
Pete

 

[dmorrow]

well, partially naked. I've removed the lantern pinions, as both arbors needed re-pivoting and couldn't otherwise get at them. In addition, one of the arbors was been underneath the pinion. Seems no matter what I do, they will not straighten out. I lack a dial indicator to guide me. They seem bent in several places, so I'm learning patience.
thx for the insights.