Wire-rope winding drums

Machinery's Handbook has the information you need. At least in the

20th Edition and earlier. Good luck.

dennis in nca

Check in Machinery's Handbook under Mechanics and Strength of Material (27th edt. page 379)

Andrew

My Handbook is the 25th Edn. Has anyone a reference into that? TIA

I have seen cables like that in copiers (I think) Seems they were wrapped around a flat drum with shoulders. They were wrapped at least twice around the spool for less slippage.

I have the 21st and 26th editions. Both have a section on wire rope. In the 26th the groove dimensions are given in a chart on page 360 in the chain section. In the index it is called the "drum score dimensions" or something like that. The chart is not the same as the

21st edition. I believe it's a mistake in the 26th. Anyway, for 3/8" rope, which is the smallest listed in the drum score chart in the 21st ed., the pitch is 7/16" and the radius of the groove is 7/32". So that gives you some idea of what you will want for your 1.5mm stuff. But if you look in the wire rope section of the book you will find all the info you need for drum sizing. The drum diameter is a compromise. The larger drum gives longer rope life and the smaller drum is cheaper, will spin faster, and result in shorter rope life. Look in the index under "wire rope" and you'll see the section pages. ERS

Next time you get near a carnival, look at the drive mechanism on a Tilt-A-Whirl. It uses an endless cable driven by a two groove capstan and a two groove idler/tensioner. Simple, neat and effective...

Jerry