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Forums :: Ask Harp Tech Expert Kinya Pollard

How should you gap the reeds for better draw bends?

4 replies [Last post]
Fri, 11/03/2023 - 04:51
gamma8gear
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Joined: 01/04/2023

How should i be adjusting the gapping of the reeds to get good draw bends. I specifically having trouble with one Hohner rocket harmonica in the key of A with the whole step 2 draw bend. This is weird because I dont have that problem with my other cheaper A harmonica, nor my Bb and C harmonica. I find it harder to get to and hold the bend on that one harmonica.How should i be gapping this harp. I tried maybe closing the gap on the 2 blow reed but i dont know if that did anything.

 

I did watch your videos on gapping but I wasn't sure if a tight gap or a loose gap was necessary for these bends and if they needed to be on the blow and draw reeds or just on one. Thank you, Kinya

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Sat, 11/04/2023 - 10:17
#1
Harp Tech Kinya...
Harp Tech Kinya Pollard's picture
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Gapping

Hey Gamma, good to hear from you. You know that HOHNER Rockets are my most favorite harmonica ;o)

TRY THIS: Assuming the reed profiles for both the 2 BLOW and 2 DRAW are perfect--remember the door hinge reference  https://www.bluesharmonica.com/harpsmith_bench 11D Part 2 Reed Profiling @ 2:30 min

Calibrate both reeds to:

@ZERO Point Gap (rivet pad end of reed):

  • BLOW REED to .001" (,025mm)
  • DRAW REED to .002" (,50mm)

@FREE End Gap:

  • for both BLOW and DRAW REEDS, set to .007" (,18mm)

Remember your reeds are essentially made of a Clock Spring material, so after calibrating your reeds; don't forget to plink, plink, plink to lock in your new settings. Stay in touch!

Your HARPSMITH, Kinya

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Wed, 11/15/2023 - 18:28
#2
Harp Tech Kinya...
Harp Tech Kinya Pollard's picture
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Hi Gamma, just checking in

Hi Gamma, just checking in with you. Did you get an opportunity to try these settings on your harmonica?

Your HARPSMITH, Kinya

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Mon, 11/20/2023 - 12:06
#3
gamma8gear
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Joined: 01/04/2023
I didnt get around to it

I didnt get around to it because of personal stuff but you just reminded me so let me see...

ok so it worked! I got the gaps to around your specifications (more or less i dont really have the tools to get the correct tolerance and am i also finding out that im not that great at adjusting the gap). but the important part is that the bend is coming in much better and now i have a better idea of the gapping. 

Thank you so much!

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Mon, 11/20/2023 - 17:36
#4
Harp Tech Kinya...
Harp Tech Kinya Pollard's picture
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Hi Gamma, the more

Hi Gamma, the more opportunities you find yourself "under the hood", you will probably find your gapping skills improving as well.

p.s. I found many Feeler Gauges online that were priced under $10

Your HARPSMITH, Kinya

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