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Welcome to VentureRider. What started as a simple site for riders of the Yamaha Venture, Royal Star, Royal Star Venture and the Star Venture has turned into so much more than that. Though the great Yamaha Venture motorcycles are still our primary focus, we have many members who have eventually moved on to other brands/models or who have stopped riding altogether but still remain members dud to the lifelong friendships they have made on this site.
Whether you have questions about your bike, looking for parts, or just wanting to talk motorcycles and riding, this is the place to be. Our members are friendly and welcoming to all. My name is Don, Freebird in the forums, and I started this site around 15 or so years ago. I have met many of our members at our various rallies and meets and some I only know from their posts here on the site but am proud to call them friends, brothers, sisters. I like to think of this as our club, not MY club. I try hard to implement features that the members request. It's not always possible but I do try.
This is a subscription based club. You can read messages in most cases but can't post, search, and etc. without becoming a supporting member. We do offer a free 2 month trial however so you are welcome to check us out before paying the small $12.00 per year dues. Upon expiration of your trial membership, you will lose the ability to post messages. At that time, you can click on "Store" and then "Subscriptions" if you wish to continue. We hope you like what you find here. We have few rules but the major ones are no religious debate, no political debate, and no "X" rated content, nudity, dirty jokes, etc. We are a family oriented club so please keep things PG or at least PG-13 rated.
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Woody 666
John do have some pictures of this project?
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M61A1MECH 648
Looking at what McMaster-Carr offers and poking around on some machinist websites I find , you are correct that 1/4" or 1" ACME are typically made with 4 threads per inch and 1 1/8" ACME are typically made with 5 threads per inch.
I agree with Ronnie, search out a local machinist to verify what you have, It is possible the vice manufacturer made their own proprietary thread form, that is not really an uncommon practice.
The other possibility is maybe it is not a true ACME thread form, could a Buttress thread or a square thread, they look similar to ACME and are similar in strength and would be suitable for the lead screw on a vice. Again a half decent machinist would be able to tell you.
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RDawson 2,166
Got a good machine shop close by? With the industry here our local machine shop has worked with a lot of acme threaded stuff. Somebody like that might can help you.
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uncledj 997
Weird one.
I've a very heavy, very large old Columbia vise that I've come across. At OSU, one of their shops was throwing out this old Columbia vise because the threads on the ?nut? were stripped. I've found that they're ACME threads and as I measure the diameter of the rod I get 1 1/8" diameter and count 4 threads per inch.
I can repair this by finding a coupling nut that will thread onto the rod, cut off the part that's stripped and weld a coupling nut in it's place.
The problem is that I only find 1 1/4" or 1" nuts offered with the 4 threads per inch.
1 1/8" nuts are available in 5 threads per inch only.
I wonder if this is actually a 1 1/4 rod that I'm looking at. I haven't taken a micrometer to it, but as it sits it clearly measures 1 1/8" and it sure looks like 4 TPI.
I'm measuring at the end and the threads don't appear worn at this point on the rod.
Should I expect this rod that measures 1 1/8" is sized small to accommodate the loose fit desired for a vise?
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N3FOL 415
Time is up for me sitting on this chair. Will be blowing snow and clearing sidewalks in a few minutes.
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