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thanks Jason! But I don't understand why "gap" was never mentioned in the "old days," but the bigger mystery is, why don't all horns automatically come with their own perfect-gap mouthpiece setup? Other mystery is, isn't the end of the leadpipe obviously just the visible end of the leadpipe?
Gap was definitely a concern in the "old days" as far back as the late 1800's in terms of manufacturing techniques and quality control. It was not common knowledge to the players/consumers, but rather a secret kept within each company. I'm not sure I understand your question about the leadpipe. I'm happy to explain if you give me a call at 303.657.2747.
Just seat the mouthpiece in real good with a hammer. If there's still a gap, try again but hit it harder.
Por isso alguns usam cornet Mouthpieces com adaptadores para trompete. Independentemente do Bore e Cup que usam, o Backbore vai ficar com Forma diferente mas mais "open" !!! Certo ???
Refiro isto pois também uso diferentes trompetes e bocais e noto diferenças de resposta na emissão de ar e som.
I just measured my gap and its 1"... Maybe this is why my horn is a little tough to play.
As always, another great video Jason. I have a question: my 1972 L.A. Benge doesn't have a mouthpiece receiver - instead they flared the end of the leadpipe to accommodate the mouthpiece. Since there is no receiver gap (or would it be infinite for discussions sake - since the first change in pipe I.D. would be the tuning slide?), what would you expect the playing characteristic to be?
Actually, Benge trumpets do have a mouthpiece receiver. It mates with the leadpipe in such a way that you do not see a shoulder. You will still benefit from the VGR system on this type of instrument. I just installed a VGR on a vintage King Liberty a few days ago and the system works very well.
Can you send me a link JUST for the shim kit please
Awesome explanation of the gap & venturi. Thank you Jason!
How much does the whole kit (in box) cost in GB£ ?
+57dogsbody All pricing is on our website www.harrelsontrumpets.com
We also offer the Venturi Gap Receiver that address Gap & Venturi with a more comprehensive approach.
+Harrelson Trumpets www.whyharrelson.com/vgr-venturi-gap-receivers.html
We just posted complete installation instructions complete with 40+ photos on our website.whyharrelson.weebly.com/3/post/2014/04/installing-the-agr-complete-instructions-w45-photos.html
You may also eliminate gap issues by adding an Adjustable Gap Receiverwhyharrelson.weebly.com/agr-adjustable-gap-receivers.html
I discuss ADDING gap in my blog here whyharrelson.weebly.com/3/post/2013/03/achieving-optimum-mouthpiece-gap-in-3-steps-part-ii.html
Awesome video. So what can be done about a mouthpiece that may need MORE gap?
+trumpetman I have explained this in my blog. You would shorten the end of the mouthpiece at the shank with a file.
Thankyou! Very informative and something i've never thought about.