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Drive cam modified?

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Deadbolt

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Post Mon Jan 15, 2018 9:29 pm

Drive cam modified?

Got two old S&G locks in the 6700 series to start my manipulation excercises. The drive cams are quite different, as you can see the play of the nose in the cam gate will be much larger in one of them. The cam with the large cam gate was just marked Grouo 2, but the other one was marked 6730.

I wonder if the lock with the wide cam gate is another model, or if the cam has been modified?

sg2-a.jpg

sg1-a.jpg
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Oldfast

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OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer
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Post Tue Jan 16, 2018 7:07 pm

Re: Drive cam modified?

Deadbolt wrote:I wonder if the lock with the wide cam gate is another model, or if the cam has been modified?

I can tell you that it has not been modified. It is indeed designed that way.

Unfortunately, I cannot for the life of me(!) remember the reasoning for
the wider gate. I recall reading about it somewhere. Ahh! Hope someone
can weigh in on this! I wanna say it had something to do with 'day-locking'
but I really dunno. But again, it's not modified... it's designed that way.

ANYONE ?!
" Enjoy the journey AS MUCH as the destination."
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Squelchtone

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Post Wed Jan 17, 2018 6:54 am

Re: Drive cam modified?

reminds me of the cam on an 8500, minus the roller attached to it, which I just grabbed off the shelf to see what it does and other than letting you turn the dial more before it retracts the bolt, I have no idea why the gate is wider and cut like that on my 8500 or on your 67xx.
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femurat

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Post Wed Jan 17, 2018 9:07 am

Re: Drive cam modified?

Good question. A wider cam gate allows the nose to drop even if you're turning the dial very fast!
That's the only thing that comes to mind right now.

Cheers :)
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MartinHewitt

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Post Wed Jan 17, 2018 10:04 am

Re: Drive cam modified?

Yes, the 8550 has such a wide gate, but its cam has only two slots for the spline key.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
Martin Hewitt, Investigator Chronicles of Martin Hewitt
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Oldfast

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OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer
OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer

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Post Fri Jan 19, 2018 12:51 am

Re: Drive cam modified?

Contacted S&G yesterday. If/when they have
some answers... I'll certainly post 'em here.
" Enjoy the journey AS MUCH as the destination."
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Deadbolt

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Post Sun Jan 21, 2018 11:27 pm

Re: Drive cam modified?

Oldfast wrote:Contacted S&G yesterday. If/when they have
some answers... I'll certainly post 'em here.


Thanks ! :-)
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Oldfast

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OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer
OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer

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Post Tue Jan 23, 2018 2:33 am

Re: Drive cam modified?

Still no word yet. Excluding the weekend, been nearly 4 business days.
Hmm. I'll give it a couple more days before I bug 'em again. We'll see.

In the meantime, maybe I'll sift through some literature... see if I can't
find where I had read about this once. Wish my memory was better, lol.
If it were I would remember what I read, or at least where I read it. :???:

I'm curious about this too though.
" Enjoy the journey AS MUCH as the destination."
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Oldfast

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OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer
OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer

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Post Sat Feb 03, 2018 11:19 pm

Re: Drive cam modified?

Oldfast wrote:Contacted S&G yesterday. If/when they have
some answers... I'll certainly post 'em here.


My original inquiry...

Hello and thank you for your time.
Usually within the 6700 series, I've been running into a new drive cam with a much wider gate than the traditional one. I was really hoping you could educate me on this. Why it was introduced, the reasoning for it, when, what circumstances, and which models I should be using this style of cam with, etc.

Look forward to getting the lowdown on this. Thanks so much, MIKE



Now I hate to get down on people or companies to quick, I really do.
But to honest, I'm sorely disappointed and rather unimpressed so far.
It took them 9 DAYS to get back with me. And this is the answer I get....

"What color is the drive cam?"

This fella hasn't a clue. I only hope that he gets up from his desk
to go find someone who does before he gets back with me again.

I've responded to the color question by attaching the very nice
comparison photo of the two drive cams that Deadbolt posted.
" Enjoy the journey AS MUCH as the destination."
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Deadbolt

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Post Sun Feb 04, 2018 12:28 am

Re: Drive cam modified?

Haha! Well, if you call your IT helpdesk, and they're asking "what color is your hard disk?" you know you´d better hang up on them sooner than later :-D

Thanks for your efforts, Oldfast.
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MartinHewitt

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Post Tue Apr 17, 2018 10:04 pm

Re: Drive cam modified?

viewtopic.php?f=108&t=12572

Another 6741 with a wide opening in the drive cam.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
Martin Hewitt, Investigator Chronicles of Martin Hewitt
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Deadbolt

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Post Tue Apr 17, 2018 10:34 pm

Re: Drive cam modified?

MartinHewitt wrote:https://keypicking.com/viewtopic.php?f=108&t=12572

Another 6741 with a wide opening in the drive cam.


Thanks, interesting.
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Oldfast

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OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer
OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer

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Post Wed Apr 18, 2018 4:00 am

Re: Drive cam modified?

I've all but given up on an answer directly from S&G, but for what it's worth...

Someone said the cams with the wider gate were designed to be used
with the key-locking dials. But again, that's just something I heard.
" Enjoy the journey AS MUCH as the destination."
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1985jim

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Post Sat Apr 21, 2018 7:56 pm

Re: Drive cam modified?

It is my understanding that the wide gate was used in the 6741 lock because the 6741 has greater dialing tolerance. It is plus or minus 1.25 digits. Jim
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MartinHewitt

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Post Sat Apr 21, 2018 8:59 pm

Re: Drive cam modified?

All locks with silvery lever should have a wider dialing tolerance, but the plastic cam in the 6642 is normal. I believe the dialing tolerance is also not important for the cam. The lever falls in when it falls.
In the 8500 series locks is the wide cam gate. There it really makes sense as the gate has to be there when the lever is propelled down at 0. It would not be good when dial and lock are not aligned perfectly and the lever would hit the cam instead of the cam gate.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
Martin Hewitt, Investigator Chronicles of Martin Hewitt

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