LSS Chassis Bolt

Dual/Triple Rectos, Maverick, Blue Angel, Nomad, Road King, F-Series, Lone Star & Stiletto

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brianf
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LSS Chassis Bolt

Post by brianf » Sun May 25, 2008 4:41 pm

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?


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Lou
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Post by Lou » Sun May 25, 2008 10:37 pm

Ha! I thought the smae thing as I was installing the tubes after my amp was delivered.

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MrMarkIII
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Re: LSS Chassis Bolt

Post by MrMarkIII » Mon May 26, 2008 1:12 am

brianf wrote:
Maybe to kill any buzzing / vibration between the cab and chassis?
Yes.

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Re: LSS Chassis Bolt

Post by brianf » Mon May 26, 2008 9:39 am

MrMarkIII wrote:
brianf wrote:
Maybe to kill any buzzing / vibration between the cab and chassis?
Yes.
Thanks!!!!!!!


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vatoben
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Post by vatoben » Mon May 26, 2008 12:41 pm

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 by Charles Reeder » Wed May 28, 2008 1:50 pm

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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Lou
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Post by Lou » Wed May 28, 2008 3:00 pm

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 by Charles Reeder » Wed May 28, 2008 3:41 pm

[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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Dusty Rhodes
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Post by Dusty Rhodes » Thu May 29, 2008 3:53 pm

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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Don
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Post by Don » Thu May 29, 2008 9:52 pm

It puts tension on the chassis so it won't vibrate.

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Post by CGM » Thu May 29, 2008 10:18 pm

Uhhhh...would we call thet the Reeder screw?....or rescrew?...I'm so confused?...
'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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Post by GeoBull » Sun Jun 01, 2008 9:03 pm

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 by Charles Reeder » Fri Jun 06, 2008 2:20 pm

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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Lou
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Post by Lou » Fri Jun 06, 2008 5:03 pm

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.
Studio 22
LoneStar Special, "Reeder" edition.

Strat w/ hand wound 54's by Manlius

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Post by CGM » Fri Jun 06, 2008 10:44 pm

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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