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Old 01-16-2019, 10:12 AM   #1
Keith H
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Default Losing air at bass drone

Looking for some expertise, thanks in advance. Was struggling with keeping the air pressure in the bag so did as test.
Blocked chanter - blew till drones stopped - got about 39 secs (damn) - drones came back
Plugged Base drone - blew till drones tennor stopped - got 2.30 to 3.21 - nice
Plugged tennor drones - blew till base drone stopped - got 0.39 - to me the problem drone.
Rehemped base drone and reed also making sure the reed tongue was not to open. Repeat test roughly same results. Tried different base reed, same results.
Can see no obvious damage to stock seat or reed seat.
Question what have I missed?
Again thanks
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Old 01-16-2019, 12:00 PM   #2
Jim Fogelman
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Default Re: Losing Air at base drone

What make of bass reed(s)?

Are you sure itís optimized for air efficiency?

Where did you plug the bass drone from? Just at the stock or somewhere along the drone?
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Old 01-16-2019, 12:33 PM   #3
el gaitero
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Default Re: Losing air at bass drone

Check the seal of the bass Bush...or edges around the cap...not leaking?
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Old 01-16-2019, 02:04 PM   #4
will103
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Default Re: Losing air at bass drone

Hi Keith, I had the same problem. I found this useful:

https://www.youtube.com/watch?v=Mc4ACA1WYcg

Ta will
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Old 01-16-2019, 04:52 PM   #5
Keith H
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Default Re: Losing Air at base drone

Quote:
Originally Posted by Jim Fogelman View Post
What make of bass reed(s)?

Are you sure itís optimized for air efficiency?

Where did you plug the bass drone from? Just at the stock or somewhere along the drone?



Hi Jim, plugged at the top of the drone. The same as tapping it off but allows for longer testing. Actually, it was great until yesterday when this started.


Highland Reeds Balanced Tone also same results with Ezeedrone base reed.
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Old 01-16-2019, 04:53 PM   #6
Keith H
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Default Re: Losing air at bass drone

Quote:
Originally Posted by el gaitero View Post
Check the seal of the bass Bush...or edges around the cap...not leaking?

Corked all stocks (except blow stick) and the air holds well

Last edited by Keith H; 01-16-2019 at 04:57 PM.
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Old 01-16-2019, 04:54 PM   #7
Keith H
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Default Re: Losing air at bass drone

Quote:
Originally Posted by will103 View Post
Hi Keith, I had the same problem. I found this useful:

https://www.youtube.com/watch?v=Mc4ACA1WYcg

Ta will

Heading there now to have a look....Yep it's Bruces fault...it's a good video and the method I use to do a quick check ;)

Last edited by Keith H; 01-16-2019 at 04:57 PM.
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Old 01-17-2019, 04:58 PM   #8
DapperDan
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Default Re: Losing air at bass drone

Is the tongue on the bass reed airtight? I mean if you mouth-blow the reed until it shuts, does air still get through? I had this issue recently and retired a set of reeds because of it.
From what I understand this used to be a standard test for cane reeds, and I would think applies to synthetics, though I don't hear about it much.

Edit: I believe Bruce Hitchings addresses this in the linked video, I watched it recently, so sorry to be redundant
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Old 01-17-2019, 05:53 PM   #9
el gaitero
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Default Re: Losing air at bass drone

Quote:
Originally Posted by will103 View Post
Hi Keith, I had the same problem. I found this useful:

https://www.youtube.com/watch?v=Mc4ACA1WYcg

Ta will
This is a very good vid Bruceís produced several year ago. Iím always intrigued by it ..because when I run the same test with EZ drone tenors I get ca 25 seconds....and the EZ reeds are set very very very efficiently and playing a 29-30Ē chanter reed.
Interestingly,I get 45 seconds on the bass alone..which is an MG Carbon.

I did try BT reeds a few years ago but did not at all care for the tone ( in my pipes) so immediately returned them to the retailer.
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Old 01-17-2019, 06:55 PM   #10
Keith H
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Default Re: Losing air at bass drone

Quote:
Originally Posted by el gaitero View Post
This is a very good vid Bruceís produced several year ago. Iím always intrigued by it ..because when I run the same test with EZ drone tenors I get ca 25 seconds....and the EZ reeds are set very very very efficiently and playing a 29-30Ē chanter reed.
Interestingly,I get 45 seconds on the bass alone..which is an MG Carbon.

I did try BT reeds a few years ago but did not at all care for the tone ( in my pipes) so immediately returned them to the retailer.

Well, I have managed to zero in on the reed and now am getting an avg of 1.20 following Bruce's test. So I'm happy now. Ended up opening the tongue the whole way and slowly bringing it back. Thanks
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