Mute / damper units, 4001/4003
Moderators: rickenbrother, ajish4
Mute / damper units, 4001/4003
Does anyone know if a new mute/damper unit will fit a '72 bridge / tailpiece? If not, does anyone have an old 4001 mute they don't want/need and are prepared to let go?
- rickenbrother
- RRF Moderator
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Re: Mute / damper units, 4001/4003
I'm sure that a new mute assembly will fit an older tailpiece.
JETGLO should officially be renamed JETGLO ROCKS! 
Re: Mute / damper units, 4001/4003
Cool, thanks Joey. May be needing one soon. 
Re: Mute / damper units, 4001/4003
I'm getting a mid 70's damper bar unit in a few days,I bought it to get the 2 screws/bolts.The new ones from RIC may fit but they are chrome not aluminum,I have a '71 and the tailpiece is aluminum and chrome ones would not match.If you are looking to restore your bass look for the aluminum if not, contact Rickenbacker and ask if they are interchangable
1971 4001 MG,70's Ventura ,1979 Yamaha BB-1200,1992 Fender Jazz,1994 Fender Strat
Re: Mute / damper units, 4001/4003
The problem in fitting is not the tailpiece. The critical point is the woodwork beneath the tailpiece. The current damper iron support bar under the foam is larger (wider) than the older one. Maybe you need some extra routing towards the bridge PU. Maybe you dont want that? 
Re: Mute / damper units, 4001/4003
Thanks for the advice guys. I'll see when I get the bass and take it from there.
Re: Mute / damper units, 4001/4003
My main '72 has the original gap-toothed aluminium bridge but it's also chrome plated; I know because bits keep flaking off. Surely the chrome bolts would be ok?glking14 wrote:I'm getting a mid 70's damper bar unit in a few days,I bought it to get the 2 screws/bolts.The new ones from RIC may fit but they are chrome not aluminum,I have a '71 and the tailpiece is aluminum and chrome ones would not match.If you are looking to restore your bass look for the aluminum if not, contact Rickenbacker and ask if they are interchangable
Re: Mute / damper units, 4001/4003
The original mute srews, while slightly different, were not aluminum, but chrome plated brass. New mute srews look just fine in one. The mute bar will probably fit, but as mentioned earlier, may be slightly wider than the route. The original chrome plating on the aluminum tailpieces was pretty poor and does tend to flake off. I've had a couple properly tripple plated, and it's a big improvement.
Re: Mute / damper units, 4001/4003
I am in no way any kind of expert,I recently got a 71' 4001 in near mint condition and I am trying to replace the 2 things that are missing , so I am solely looking for vintage(early to mid 70's) parts which made the most sense to me.I am new to this forum and have found the members here most helpful and they know their stuff,I offered you my opinion which may not be that precise.I have no knowledge of a 4003 and don't know the difference between that and a 4001 other than looks.I hope this helps you in making the best choice.
1971 4001 MG,70's Ventura ,1979 Yamaha BB-1200,1992 Fender Jazz,1994 Fender Strat
Re: Mute / damper units, 4001/4003
No offence meant or taken at all Graham, yours was a valid point and I was just querying it because I wasn''t sure whether it was correct. Your contribution is very much appreciated. FWIW I'd sooner have the period correct parts but I can happily live with the 4003 parts if they fit ok. Maybe somewhere down the line I'll find some originals; although I've got to get the bass first!glking14 wrote:I am in no way any kind of expert,I recently got a 71' 4001 in near mint condition and I am trying to replace the 2 things that are missing , so I am solely looking for vintage(early to mid 70's) parts which made the most sense to me.I am new to this forum and have found the members here most helpful and they know their stuff,I offered you my opinion which may not be that precise.I have no knowledge of a 4003 and don't know the difference between that and a 4001 other than looks.I hope this helps you in making the best choice.
Dane,
I've often wondered about having the bridge re-plated. I may look into it in the near future. Aesthetically it doesn't bother me but the flaking can be a pain.
Re: Mute / damper units, 4001/4003
Shaun, Lemme know if ya ever wanna get your tailpiece (or your bridge for that matter) plated. I have an excellent plater I use who also does work for Hipshot as well. The aluminum tailpiece and bridge I have are more or less NOS, but the chrome on them is real delicate. I will probably get mine replated at some point too.
Re: Mute / damper units, 4001/4003
Thanks Dane, will do.
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rickaddict
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Re: Mute / damper units, 4001/4003
Hey Graham- Not trying to stir the pot, but I agree with Dane. My Jan '71 4001 has the original mute screws and they are not aluminum. They look a little different from the new ones...maybe a bit flatter and the chrome plating doesn't seem as thick: http://www.rickresource.com/register/us ... llsize.jpg
As far as the mute bar goes...I'd give a new one a shot. They're cheap enough that it doesn't work out it wouldn't be a big loss. Plus, someone here would likely buy it if you wanted to sell it. One good thing about the new ones is that they're made to fit the radius of the strings. The older ones (or at least the one in my Jan '71) are just a flat bar so they'll hit the E and the G strings first.
As far as the mute bar goes...I'd give a new one a shot. They're cheap enough that it doesn't work out it wouldn't be a big loss. Plus, someone here would likely buy it if you wanted to sell it. One good thing about the new ones is that they're made to fit the radius of the strings. The older ones (or at least the one in my Jan '71) are just a flat bar so they'll hit the E and the G strings first.
- rickenbrother
- RRF Moderator
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- Joined: Sun May 26, 2002 5:00 am
Re: Mute / damper units, 4001/4003
I agree. There might be some difference between a '71 tailpiece and one from '75, but I gave a new mute assembly a try on a '75 4001FL. I didn't have any problems.rickaddict wrote:As far as the mute bar goes...I'd give a new one a shot. They're cheap enough that it doesn't work out it wouldn't be a big loss. Plus, someone here would likely buy it if you wanted to sell it.
JETGLO should officially be renamed JETGLO ROCKS! 
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rickaddict
- Senior Member
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- Joined: Mon Mar 29, 2004 7:46 am
Re: Mute / damper units, 4001/4003
Actually...you know what? I have a slotted '71 aluminum tail sitting at home on my work bench. And I also have a newish mute bar...
So tonight if I remember, I'll try to see if the two of them want to work together and I'll report back later or tomorrow.

So tonight if I remember, I'll try to see if the two of them want to work together and I'll report back later or tomorrow.
