longest U-drives....

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[ARCHIVED THREAD] - longest U-drives....

Posted: 3/27/2006 1:42:56 PM EDT

I know on the rear the lenth does not matter. I would assume that longer is better. The question is how long could the front drive screws be before conflicing with the barrel or something else i am not thinking of? I am wondering about the length for he front with and without the orig rivets removed.
Thanks a ton
jimmy

Posted: 3/27/2006 3:08:59 PM EDT

[#1]

I believe the 3/8" is almost pushing it; I've been using the 1/4" ones myself.

Posted: 3/27/2006 7:44:53 PM EDT

[#2]

I've read 1/4" on the "how tos". I took a rough measurement to double check and I don't think more than a 1/4" will fit the front trunion with or without rivet.. I measured a Polish UF...

John P..

Posted: 3/28/2006 3:50:11 AM EDT

[#3]

1/4" at he front worked for me. Make sure to clean the holes and use a threadlocker of some sort.

Posted: 3/28/2006 8:11:35 AM EDT

[#4]

Quoted:
I know on the rear the lenth does not matter. I would assume that longer is better. The question is how long could the front drive screws be before conflicing with the barrel or something else i am not thinking of? I am wondering about the length for he front with and without the orig rivets removed.
Thanks a ton
jimmy

3/8 will take you into Barell metal, BTDT.

Posted: 3/28/2006 8:41:45 AM EDT

[#5]

if that is the case i see a problem. I have completely removed all rivets and removed the barrel. I do not exactly like doing rivits so i plan on using u-drive. that means i need to use number 10 to fit the drilled out holes. Seems to me that the shortest #10s are 3/8. That is from McMaster-carr. Seems liek i may have a problem.... BTW how far into the barrel metal? I little does not bother me.

Posted: 3/28/2006 10:36:39 AM EDT

[#6]

Quoted:
if that is the case i see a problem. I have completely removed all rivets and removed the barrel. I do not exactly like doing rivits so i plan on using u-drive. that means i need to use number 10 to fit the drilled out holes. Seems to me that the shortest #10s are 3/8. That is from McMaster-carr. Seems liek i may have a problem.... BTW how far into the barrel metal? I little does not bother me.

You could grind the screws down to what you need if they are too long.

Posted: 3/28/2006 11:40:02 AM EDT

[#7]

You might try www.fastenal.com I got some 1/4" long u-drives from them locally. Shipping was pretty quick too.

Posted: 3/28/2006 12:32:18 PM EDT

[#8]

Quoted:
You might try www.fastenal.com I got some 1/4" long u-drives from them locally. Shipping was pretty quick too.

Yep, ordered some when I was going to do my Udrive build, then decided to go rivet when I had problems pressing in the UDRIVE. The helical "teeth" on the Udrive stripped out against the trunion and I got no bite. Ended up riveting bucking against the barell. Second one done this way so far so good although only have about 200 rounds each thru. Not a very good gage on longevity by far.

Barrell metals comes after approx .125 (someone correct me if I am wrong)

Glenn

[ARCHIVED THREAD] - longest U-drives....

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