Bolt lift kit...this time with pictures

[dolomite_supafly]

Ok, so here is what we have and yes I decided to post pictures this time because everybody thought I was trying to hide something. Or sell some sort of snake oil.

First is a thrust bearing:
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2565.jpg
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2566.jpg
It goes between the BAS and the cocking sleeve. This is an off the shelf part, nothing special that anyone can get for nearly nothing and yes they will sell individual bearings, no bulk ordering.

The lower part of the thrust bearing sits on top of the cocking sleeve:
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2567.jpg
Next goes in the actual bearing and on top of this is the other part of the bearing:
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2568.jpg

And finally the other part of the bearing:
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2571.jpg

Here is a picture of a spacer that is on the BAS to make up the difference of the thickness of the bearing assembly:
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2572.jpg

Then screw it all down.

As you can see the spacer and the bearing are within .01" of each other:
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2569.jpg
http://img.photobucket.com/albums/v446/Adyth/Firearms%20related/IMG_2570.jpg
If you are worried about .01" then have the difference made up with your spacer when you have it made.

It is a little lighter and definitely smoothed the bolt lift out. No need to machine anything off the BAS or cocking sleeve as long as you use a spacer under the BAS. The spacer is not an off the shelf part, it was something I had a machinist make for me. Any machinist could duplicate it without much fuss. No clipping of springs, or any of the other stuff I was accused of advocating.

If anyone thinks of anything that might help please feel free to let me know, otherwise enjoy. As soon as the “powers” that be give their blessings I’ll post the link to the bearing so anyone can order one. I just don’t want to post anything that might turn this one into a shit storm like the last thread.

Dolomite

[mgs44mag]

Why not just shorten up the BAS and get rid of that ugly spacer. You can purchase BAS from Savage for $5.00 a piece. Have them shortened by .195 and do a trade in on the screw.


So, checking rotation torque before and after, what are the results?
Number of fireamrs tested on?

No bass masters measurements this time!!

Looks fairly labor intensive to just give away.

[Dirk]

Very clear instuctive pix. Thanks.
One question, what is the purpose of the second washer? Why not let the bearing unit ride directly on the BAS? Then the spacer could be thinner.

[dolomite_supafly]

The spacer is all I will probably be giving away now. The bearings put it over the $ mark for me to just to throw money away to people I don't know. I may still toss some bearings and spacers out there but no where near what I had planned.

The bearings are less than $2 + shipping which ran $4.50 with a bunch of other stuff on the order so it may be cheaper than that for individual ones.

Again this is all contingent on the "powers" that be. I'm sure they will be chimming in here shortly.

Dolomite



Why not let the bearing unit ride directly on the BAS? Then the spacer could be thinner.

My BAS isn't as smooth as the other side of the bearing.

[steveinwv]

Nice engineering. I can't possibly see how this could have less drag than the .38spl./ball bearing method whatsoever since the point of contact is directly in the center (on the .38spl.) and there is 5/6th of the contact area.

edit.....I'd say that your 'clipped spring' was what did this idea in.

There is honestly no insult intended in this post. Keep on trying to do better.

[possum1]

Still say wish I had your "get up and go" Dolomite, because I'm not near "Disabled" as you. I think you know what I mean. Stay well, Dale ;)

[cwop]

i like these comments im waiting for one soon.

bob

[Todd33]

I'm impressed.. :)

[ellobo]

Well Dolomite, you sure as he2sticks impressed this old mechanical engineer. The whole project seems well thuoght out. I cannot see anything the least bit dangerous. But then again, my old eyes arnt what they never were.

El Lobo
PS: the Dolomites are a mt. range in Italy arnt they?

[dolomite_supafly]

PS: the Dolomites are a mt. range in Italy arnt they?


That and a mineral found in granite as well as a famous character from a blaxploitation film of the 70's.

http://en.wikipedia.org/wiki/Dolemite
http://en.wikipedia.org/wiki/Blaxploitation

Dolomite

[jrmy_1]

Nice Work!!! I'm definitely interested in trying out this kit!

[xhogboss]

+1 on being impressed! I'm no engineer, but seems like you've eliminated friction between two stationary parts by inserting the rolling balls. Anybody who's moved a gun safe on pipe rollers knows the principle works. Nice bit of work! Hope to see the link for the bearing soon.

[J.Baker]

Ok, how many times are we (the staff) going to have to nip this in the bud? The fact you sent a letter out via certified mail verifies you acknowledge the potential danger associated with this "kit", yet you continue to try to get people to take the risk of trying it? WTF?


Obviously telling you this is a bad idea and locking/removing the previous threads wasn't enough.

[J.Baker]

Ok, looking over all this again I'm man enough to admit I initially misunderstood this kit. This kit "should" be reasonably safe and eliminate the ignition issues of the previous kit, but I still question why it's even needed. With 5 ball bearings it has 5-times the contact area of the .38SP case mod that's been around for awhile, and as we all know more contact area = more friction = harder bolt lift. You'll also still need to shorten the BAS accordingly the same as you would the 38SP case mod, so where's the benefit?

Reinventing the wheel?

[geargrinder]

I could see where there would be less, or at least similar amount of friction between the two. The bearing in the 38 case drags and on end of the BAS. The only friction on this newer one is the rolling resistance of the 5 bearings. There isn't much to slow or drag on the 5 bearings.

[LeeH]

You Guy's with the older actions have a choice.
Us guy's with the newer actions (cocking indicator) Finally have one choice.
Ain't No Stinkin .38 Kit's For us.......

[dolomite_supafly]

Ok, looking over all this again I'm man enough to admit I initially misunderstood this kit. This kit "should" be reasonably safe and eliminate the ignition issues of the previous kit, but I still question why it's even needed. With 5 ball bearings it has 5-times the contact area of the .38SP case mod that's been around for awhile, and as we all know more contact area = more friction = harder bolt lift. You'll also still need to shorten the BAS accordingly the same as you would the 38SP case mod, so where's the benefit?

Reinventing the wheel?


I really appreciate this.

As for the letter he posted. it was for the previous WASHER ONLY test group I sent out. I admitted in this (http://savageshooters.com/SavageForum/index.php/topic,30394.0.html) thread there was a valid concern with it and I sent these letters out to make sure no one continued to use the WASHER ONLY setup for the reasons mentioned.

As Mr Furious said "This kit "should" be reasonably safe and eliminate the ignition issues of the previous kit," the previous kit he is talking about is the one in the linked thread.

As far as whether it is better than the 38 special versions, who knows. I don't do this to try to show people up but I do have my own personal reasons for doing it. A helicopter accident in 2008 did me in. So when I am having a "good" day I do little projects like this to forget about life for a while. All the activity involved in taking pictures today and such is going to cost me a few "good" days. I really don't mind because if I didn't do things like this I would just sit around and probably hate life.

I welcome opinions but please no name calling
Dolomite

[LeeH]

ATTABOY Dolomite

[Dirk]

Good on you Dolomite. Keep hanging in there! You have a very positive attitude. Don't let nay sayers get to you.

[Todd33]

I'm a total "Newb" to Boltguns & Savages in general, But I've noticed you've taken the time to respond to several of my posts with helpful info & advice. Thank you for that and for sharing your ingenuity. Just my 2 cents...... ;)