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 Post subject: LSS Chassis Bolt
PostPosted: Sun May 25, 2008 4:41 pm 
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Mark III

Joined: Tue May 10, 2005 6:09 pm
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Location: Toronto, Canada
Do any of yours have a bolt/screw coming out of the chassis between the last 2 EL84s? Just sort of sitting there for no reason.

Mine has it and I have seen it in about a half of the others Í've looked at. Any ideas?

Maybe to kill any buzzing / vibration between the cab and chassis?


brianf


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 Post subject:
PostPosted: Sun May 25, 2008 10:37 pm 
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Ha! I thought the smae thing as I was installing the tubes after my amp was delivered.

Monsta-Tone?

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 Post subject: Re: LSS Chassis Bolt
PostPosted: Mon May 26, 2008 1:12 am 
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Dual Recto

Joined: Mon Jul 16, 2007 1:01 am
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brianf wrote:

Maybe to kill any buzzing / vibration between the cab and chassis?


Yes.


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 Post subject: Re: LSS Chassis Bolt
PostPosted: Mon May 26, 2008 9:39 am 
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Mark III

Joined: Tue May 10, 2005 6:09 pm
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Location: Toronto, Canada
MrMarkIII wrote:
brianf wrote:

Maybe to kill any buzzing / vibration between the cab and chassis?


Yes.


Thanks!!!!!!!


brianf


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 Post subject:
PostPosted: Mon May 26, 2008 12:41 pm 
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Mark I
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Joined: Wed Nov 16, 2005 3:15 am
Posts: 46
It seems "the bolt" comes into question every few weeks or so. I've noticed it on all of the smaller chassis amps I've owned from Mesa. I was told it's there to reduce vibration between the head and cabinet. But I think it's main purpose is to prevent it during transport, more than during a gig. I could be wrong.
Do DRs and Road Kings have the bolt on their longer chassis? The biggest Mesa amp I own is an Ace and it's got the bolt as well.

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 Post subject:
PostPosted: Wed May 28, 2008 1:50 pm 
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Mark III

Joined: Thu Feb 21, 2008 1:24 am
Posts: 323
Hi:

As well as dampening vibrations; the bolt also seems to serve the function of grounding the chassis to the 'foil' undercoating on the top underside of the combo-cab or head-cab .

I say this because I did some work on my DC-5 a while back. When I put the chassis back into the combo cabinet I forgot all about tightening that screw(bolt) back up.

I had some very disturbing hum until I remembered about the screw. After I tightened it up the hum was gone.

So, I think it is evident that the screw(bolt) both dampens vibrations AND grounds the chassis to the foil.

I have the bolt on both my Lone Stars and on my DC-5.

Regards: Charles


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 Post subject:
PostPosted: Wed May 28, 2008 3:00 pm 
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I saw "Reeder" as the last reply and figured you were swaping the dampning screw 1 with dampning screw 2! 8)

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 Post subject:
PostPosted: Wed May 28, 2008 3:41 pm 
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Mark III

Joined: Thu Feb 21, 2008 1:24 am
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[quote="Lou"]I saw "Reeder" as the last reply and figured you were swaping the dampning screw 1 with dampning screw 2! 8)[/quote]

Chuckle!
That's not a bad idea! There's got to be a better sounding dampening screw out there somewhere!


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 Post subject:
PostPosted: Thu May 29, 2008 3:53 pm 
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Mark III
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Location: Colorado
I have this on my Stiletto Ace Combo as well. Please explain to me how this can dampen vibration. Vibration from what? What is being dampened?

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 Post subject:
PostPosted: Thu May 29, 2008 9:52 pm 
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Single Recto
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It puts tension on the chassis so it won't vibrate.


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 Post subject:
PostPosted: Thu May 29, 2008 10:18 pm 
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Mark II

Joined: Thu Mar 06, 2008 8:48 pm
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Location: Knoxville , Tn.
Uhhhh...would we call thet the Reeder screw?....or rescrew?...I'm so confused?...

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LSS," Reeder Mod" ( I'm lovin it !)


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 Post subject:
PostPosted: Sun Jun 01, 2008 9:03 pm 
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Mark III

Joined: Thu Mar 29, 2007 8:48 pm
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Has anybody tried the 'screwless' mod? I noticed that this screw was the same thread specs as the screw that holds the chasis to the body (the one to the right). When I took the screw being discussed here out, I finally got the sound I've been wanting from my LSS!

Jk, of course :) With a tip of the hat to the reader mod. Just couldn't help myself.

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 Post subject:
PostPosted: Fri Jun 06, 2008 2:20 pm 
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Mark III

Joined: Thu Feb 21, 2008 1:24 am
Posts: 323
Greetings Lou, CGM & GeoBull:

After much thought about your postings; I decided that you all might be onto something...

So I went down to the hardware store and found a Black Screw and a Brass Screw that matched the threading of the Chrome Chassis Screws.

I installed the Black Screw and the Brass Screw along with the 2 Chrome Chassis Screws that came with the amp. I ran wires from each of them to the foot-switch jacks on the back of my LSC. Now when I footswitch to the Black Screw I get a convincing 'Recto-Sound' and when I footswitch to the Brass Screw it sounds just like an old 'Tweed-Deluxe'.

This worked out so well that I am now thinking of installing an Aluminum Screw as well. It should give me an Acoustic Guitar sound.

I advise anyone without a sense of humor or a lick of sense; not to try these mods themselves; as they are extremely dangerous to your saniity and self esteem!

Charles


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 Post subject:
PostPosted: Fri Jun 06, 2008 5:03 pm 
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Well I was just looking at the inner workings of my amp and apparently the two screws have already been switched.

I really wish I could have known what they sounded like stock.

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LoneStar Special, "Reeder" edition.

Strat w/ hand wound 54's by Manlius


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 Post subject:
PostPosted: Fri Jun 06, 2008 10:44 pm 
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Mark II

Joined: Thu Mar 06, 2008 8:48 pm
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Location: Knoxville , Tn.
HMMMM....what do you supoose a blue screw would do?...I am after all a bluesman....I'm looking for the ultimate edge here...I mean, outside talent and hard work......CGM....

_________________
'71 ES-335,
'82 American Tele
'05G&L ASAT Classic ( very cool )
'97G&LASAT Classic
Rivera Venus 6, Rivera Clubster 25
LSS," Reeder Mod" ( I'm lovin it !)


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