• FAQ  • Search  • Memberlist  • Usergroups   • Register   • Profile  • Log in to check your private messages  • Log in 

Back bores Mpc Tops



 
Post new topic   Reply to topic    trumpetherald.com Forum Index -> Mouthpieces
View previous topic :: View next topic  
Author Message
mark61
Veteran Member


Joined: 28 Feb 2011
Posts: 173

PostPosted: Wed May 16, 2018 10:29 am    Post subject: Back bores Mpc Tops Reply with quote

Can you use a 25 throat mpc top on a 27 Backbore or is this a no, no. I'm not a pro ,just wanted to know with minute tolerances if this was just a no go.

Thanks
Mark
Back to top
View user's profile Send private message
TKSop
Heavyweight Member


Joined: 23 Feb 2014
Posts: 1719
Location: UK

PostPosted: Wed May 16, 2018 10:42 am    Post subject: Reply with quote

Can you?
-Sort of.

Will it work?
-Sometimes but the odds of success seem to be lower (presumably due to the ridge created by the mismatch rather than the throat getting smaller - remember Warburton does backbores that contract from #27 at the interface to #28/#29 further in)


If you've already got both, just try it and see...
Back to top
View user's profile Send private message
Tpt_Guy
Heavyweight Member


Joined: 16 Jul 2004
Posts: 1101
Location: Sacramento, Ca

PostPosted: Wed May 16, 2018 10:48 am    Post subject: Reply with quote

If it works, use it.

But you say 27 backbore...do you mean the throat at the screw juncture, or an actual 27 backbore? There is a difference.
_________________
-Tom Hall-

"A good teacher protects his pupils from his own influence."
-Bruce Lee
Back to top
View user's profile Send private message
mark61
Veteran Member


Joined: 28 Feb 2011
Posts: 173

PostPosted: Wed May 16, 2018 11:40 am    Post subject: Reply with quote

I have a Wedge top coming that's ideally for a 25 back bore..
I was going to try iron my warb 7 back bore.
Hope this makes more sense

Mark
Till I find a 25 bottom from wedge
Back to top
View user's profile Send private message
TKSop
Heavyweight Member


Joined: 23 Feb 2014
Posts: 1719
Location: UK

PostPosted: Wed May 16, 2018 11:57 am    Post subject: Reply with quote

Might as well try it - if it doesn't work then look into a #25 throated backbore.
Back to top
View user's profile Send private message
lipshurt
Heavyweight Member


Joined: 24 Feb 2008
Posts: 2641
Location: vista ca

PostPosted: Wed May 16, 2018 12:53 pm    Post subject: Reply with quote

i would say that its fine about 90 percent of the time, and there is no rhyme or reason to predicting it. Most players will be able to put a 25 throat top on a 27 throat BB, with no issues even though there is that ridge at the interface.

Other players will a get a HISSING sound.

There is very small minority like 2 in 500 players that get the hissing sound at the slightest imperceptable mismatch between top and BB. Like they just cant use screw backbores. Cured sometimes by making the BB throat one or two sizes bigger than the top throat size, but sometimes that does not even work.
_________________
Mouthpiece Maker
vintage Trumpet design enthusiast
www.meeuwsenmouthpieces.com
www.youtube.com/lipshurt
Back to top
View user's profile Send private message Visit poster's website
maynard-46
Heavyweight Member


Joined: 25 Oct 2002
Posts: 1842
Location: GEORGIA

PostPosted: Wed May 16, 2018 3:22 pm    Post subject: back bores mpc top Reply with quote

If the top has a smaller throat than the BB there's NO problem. Alot of players will use say a #28 throat top combined with a #27 throat BB. This eliminates ANY possibility of a ridge interfering with the sound/blow, etc. I've done this on occasion as have many other players. In fact I think Steve Patrick told me he has done that for years.

Butch
_________________
TRUMPE: SCHILKE B7 / Legends .585 "CatMaster" Top / KT "RT1" BB / Reeves #5.75 Sleeve.
FLUGELHORN: ADAMS Custom "F1" / Legends .585 "CatMaster FL.
Back to top
View user's profile Send private message
RonWilson
New Member


Joined: 13 May 2018
Posts: 6

PostPosted: Mon May 21, 2018 7:05 pm    Post subject: Reply with quote

They really need to be a good match
Back to top
View user's profile Send private message
mark61
Veteran Member


Joined: 28 Feb 2011
Posts: 173

PostPosted: Wed May 23, 2018 11:41 pm    Post subject: Reply with quote

thanks alot you guys !!

Mark
Back to top
View user's profile Send private message
Locutus2k
Heavyweight Member


Joined: 01 Feb 2006
Posts: 635
Location: Rome, Italy

PostPosted: Thu May 24, 2018 1:18 am    Post subject: Re: back bores mpc top Reply with quote

maynard-46 wrote:
If the top has a smaller throat than the BB there's NO problem. Alot of players will use say a #28 throat top combined with a #27 throat BB. This eliminates ANY possibility of a ridge interfering with the sound/blow, etc. I've done this on occasion as have many other players. In fact I think Steve Patrick told me he has done that for years.

Butch


I agree. I've used to do the same with no issues.
_________________
------------------------
Edwards X-13
Lawler TL5 Balanced 30th Anniversary (#2 of 5)
Lawler TL5 L bore
Bach NY Special edition 2008
Flugel Van Laar Oiram Ack
Mark Curry mouthpieces
------------------------
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    trumpetherald.com Forum Index -> Mouthpieces All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group