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Tuning Lever Tip/Head Angle

  • 1.  Tuning Lever Tip/Head Angle

    Member
    Posted 4 days ago

    I'm looking to get a new lever, not anytime soon, but still...

    I've seen a lot on tuning tip lengths and tuning lever head angle with people saying "shorter tip is better" or "shorter tip is stiffer" and other readings I see "head angle isn't as important as tip length...therefore bigger head angle and shorter tip is ideal."

    So, I thought I'd ask the same questions as we've all probably seen before, but to see if there's any new info:

    Does a shorter tip actually noticeably flex less? 30mm Jahn tip vs 40mm Jahn tip...they are both extremely tough metal...(I have used pliers and lots of physical force to try to gouge the surface and saw no marring from the plier teeth). So if the metal is so dang resilient to marring can it really be so flexible to be able to tell a difference between 30mm and 40mm?

    If it is a big difference then my best option for a new lever would be a shorter tip (30mm...my current is 40mm) and a larger head angle (15⁰ so as to clear plate struts...my current is 10⁰), correct?

    Also, does it matter if the tip is male or female threaded? I currently have Jahn male tips.

    Thanks



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    Cobrun Sells
    cobrun94@yahoo.com
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  • 2.  RE: Tuning Lever Tip/Head Angle

    Posted 4 days ago

    For whatever reason, I dislike higher angles - I would prefer a lower angle and longer tip any day. I feel that my control and stability suffered when I tried a 15 degree(?) head for a while.

    Ron Koval



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    Ron Koval
    CHICAGO IL
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  • 3.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 4 days ago

    I feel like pin stiffness/flexibility is a test that can be proved empirically by Nate Reyburn, Randy Cassotto, or Baoli Liu of UW-Madison. It would just need it a solid base on one end of the tuning tip and another piece of equipment on the other end to twist the tuning tip and measure what angle it flexes to at a fixed amount of torque and then take that same amount of torque and apply it to a longer tip and see what the flex difference is via angle.



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    Cobrun Sells
    cobrun94@yahoo.com
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  • 4.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago
    Coburn

    You're going to get a lot of different opinions of what's better or what to avoid. The bottom line is, you need to pick a hammer that feels most comfortable to you and what fits your hand. As you said, you're not in a hurry. Therefore, I would recommend you go to the convention in Alexandria this summer and look at and try all the different hammers and pick the one you like the best. 

    Wim





  • 5.  RE: Tuning Lever Tip/Head Angle

    Posted 4 days ago

    ProPTN has a rental program that might be helpful.



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    "That Tuning Guy"
    Scott Kerns
    Lincoln, Nebraska
    www.thattuningguy.com
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  • 6.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago

    I prefer 5º for verticals as the lever will more or less be at right angles to the pin and a greater angle gives no advantage for back and forth flexing towards or away from the string as my hammer is usually up near 12 o'clock. On grands, the higher angle gives an advantage in that when the lever is at 2-3 o'clock, the angle will provide some back and forth downward flexing pressure towards or away from the string. When I was using a Fujan, I had two heads, now I'm using Supply 88's 'Kestrel' which has a fixed head that comes with a 15º head. But Mark had made some 5º heads so I now have 2 levers, one for verticals, one for grands. 

    When I was using a traditional lever, I had a 20º head made by Jim Coleman Jr. that I liked very much for fine tuning on grands, pushing and pulling at 2-3 o'clock seemed to also provide just the right amount of down bearing on the pin and I found that I didn't have to reposition the lever on the pin as often for the final stroke. If I could get a Kestrel with a 20º, I'd probable spring for another lever.

    Like Wim said, you have to find what feels best for you. Some of that hinges on your body type, your leverage on the pin has a lot to do with how tall one is, the height of the shoulder relative to the pins will affect how your lever feels to you.



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    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
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  • 7.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 3 days ago

    I use a Charles Faulk hammer with a Reyburn #2 tip (very short), 15 degree angle. I prefer the shortest possible tip which will require 15 degrees to clear struts. Sometimes it doesn't. I carry a second hammer with a #1 tip which I use for 1/0 pins that often appear on European and some Asian pianos. The tip is longer on that one and it is also set up at 10 degrees. Between the two, covers 99% of what I work on. 



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    David Love RPT
    www.davidlovepianos.com
    davidlovepianos@comcast.net
    415 407 8320
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  • 8.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago

    I think this is misunderstood.  The extra length of the tuning tip affects how much the tuning hammer flexes the tuning pin, not that the tip itself is flexing any more because it's 10 mm longer.  The longer tip has more leverage against the tuning pin and flexes it more.  If you have a very long tuning tip, which could be necessary on pianos with tall plate struts, you'll have to be more careful when tuning.  If the tip is shorter, it won't flex the tuning pin as much.  Of course you can learn to use it in either case.  The shorter tip is easier to use if the head angle is 15 deg. because with a shallower angle the lever may not clear a nearby strut.  If your tip is long enough, you wouldn't need any head angle at all.  But I don't think they make a 0 deg. head, afaik. 

    As far as the tuning lever length, some prefer a longer lever because it's easier to turn tight pins.  Some prefer a shorter lever because the lever is stiffer and gives better feedback when the pin turns. 

    I used a regular Hale hammer with a straight handle for many years, but once I discovered how ergonomic the ball-end handles were, I got a Faulk hammer.  I'm not even sure what the head angle is, and I never change it.  Years ago, you could buy a rubber ball that fit on the regular Hale hammer.  My ball disappeared one day, and I regretted it.  
    Male or female threaded tips don't matter except that you might someday want to try a different brand tip that wouldn't fit the one you have.

    As was mentioned, you'll find your best choice by experience.  I wish I had tried different hammers earlier in my career, but I did learn to adjust to whatever I had in my hand.

    It's not the destination, it's the journey.  Just like tools.  Some will get a tool that "everyone uses", and it won't work for them.  I have a box full of these tools that I don't use, or didn't have time to modify to make them work.  Coil lifters come to mind.  They come too wide on the end to fit between the tuning pins.  This journey of becoming a technician is full of various choices, and though you can get advice, in the end you'll find the best way and the best tools that work for you.  It helps if you're a tool junkie like me.  But only buy a tool when you need it, other than the essential regulating tools, and regular hand tools, screwdrivers, etc.  I would not buy a retired technician's toolbox.  You want to be proud of your tools.  Don't buy old junky worn out tools that, like old shoes, you wouldn't want to own.  

    Good luck.



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    Paul McCloud, RPT
    Accutone Piano Service
    www.AccutonePianoService.com
    pavadasa@gmail.com
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  • 9.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 4 days ago

    Oh,

    I see now how a longer tip has more leverage in unintentional flagpoling. Okay, I didn't think of that.

    I wasn't looking for opinions, I was looking for physical realities...i.e. too small of a head angle allows the lever to smack into the plate struts...as an example.

    Paul, you answered that physical question.



    ------------------------------
    Cobrun Sells
    cobrun94@yahoo.com
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  • 10.  RE: Tuning Lever Tip/Head Angle

    Posted 4 days ago

    What matters is not the length of the tip, or the angle of the handle.

    What matters is the line of force between the point where force is applied to the handle and the point where the tuning pin enters the pinblock.

    If the line of force is at a high angle (imagine 45 degrees), pushing on the handle will exert a lot of bending force on the pin.

    If the line of force is basically flat (as with the Levitan D lever), pushing on the handle will exert only a rotational force, no bending.

    The other thing that matters is the stiffness of the tuning lever as a whole.



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    Ed Sutton
    ed440@me.com
    (980) 254-7413
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  • 11.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago

    You make several good points, Paul.

    Those blue rubber ball – ends for otherwise straight tuning levers were still available, last I checked, from Erwin's Pianoforte Supply.



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    Alan Eder, RPT
    Herb Alpert School of Music
    California Institute of the Arts
    Valencia, CA
    661.904.6483
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  • 12.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 4 days ago
    Oh,

    Another question. With a #3 tuning tip does the lever come on and off the pins more quickly than #2 tip? I'm looking to have a lever specifically for pitch corrections and want the tip to slide on and off the pins quickly and easily. So does a #3 allow for quick sliding on & off or does it snug just as well as #2 but just lower onto the pins?




    Cobrun Sells
    505.402.6481
    cobrun94@yahoo.com





  • 13.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago

    I am a fan of the tuning tips made by Randy Cassotto (the ones I have are short, don't know if he makes longer ones). They're expensive! On his website you'll find a chart with his recommendations for tips most appropriate for several major piano brands and models.



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    Patrick Draine RPT
    Billerica MA
    (978) 663-9690
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  • 14.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago

    My personal preference is a very lightweight, stiff carbon fiber tuning lever that's 12-13" long with a 10° head (at most 15°, but that's pushing it for me), with a #2 tip for most pianos. I went through six different levers before coming to this conclusion. Since that point, I've recommended this set up to quite a few technicians with lots of positive feedback. 

    Here's my reasoning behind these recommendations. Carbon fiber: lightweight and stiff gives you the best feedback from what's actually going on with the pin. You're not having to try to figure out what part of the feedback is the pin and what part is caused by your heavy lever. To me, this is the single most important aspect of a good tuning lever. 

    12-13" long: The ideal length for the right balance between leverage for tight tuning pins and shortness for more control with loose tuning pins, not to mention this will fit in most tool cases. 

    10° head: Anything less will have a hard time with clearance on certain pianos. More than 10° will work up to about 15°, but anything more than 15° really starts to introduce a lot of unintentional flagpoling. 

    A #2 tip: I know a lot of good technicians like a #3 tip, but for me, I feel like that's too loose on many tuning pins. I would rather have my tuning tip grasp along the entire length of the pin than grasp only right at the string coil. You'll get significantly better control and feedback that way. 

    I don't think there's much difference between a male and female head and tip combo, but there are several good engineers I've talked to who feel quite strongly that a male head would be better. I'm not entirely convinced it truly makes that much of a difference but want to put it out there.



    I really love my Fujan lever, and I really like the levers that Charles Faulk and Nate Reyburn make as well. All are excellent options, even at the higher price points. A good quality tuning lever will last you decades at the least and a century or more at the most. 

    If your main reason for upgrading is for pitch raises, I would highly recommend you consider an impact hammer like the Reyburn CyberHammer. There is a learning curve involved but it's one of the best things you can do for your body in the long run. Plus, it will make your upright pitch raises a lot easier in the here-and-now. 



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    Benjamin Sanchez, RPT
    (256) 947-9999
    www.professional-piano-services.com
    www.FromZeroToSixFiguresBook.com
    www.PianoCraftTechnicalSchool.com
    ------------------------------



  • 15.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago

    Not really. A well made #3 tip is going to be a wider opening, but it should fit the same. Until it hits the becket. If it's so wide that it can go all the way to the becket and wobble there, you're loosing all immediate engagement for the pin.

    Good exploratory thought, but probably not what you're hoping for.



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    http://www.facebook.com/ReyburnPianoTech
    http://www.reyburntools.com
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  • 16.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 3 days ago

    The #3 tip will have more "play" before engaging with the tuning pin. It will sit deeper on a standard 2/0 pin and may or may not be noticeably faster to remove. Time you save in moving from pin to pin will probably be lost in extra lost motion prior to engaging pin. I have used the "play" in a #3 tip to bump a tuning pin trying to get a precise pin adjustment for fine pitch tuning; I have doubts about how beneficial this is/was.

     

    Also, I can make you a rubber tuning lever ball if they are not available; contact me.

     

    John Ginter

    Plum Piano Restoration, Inc.

    e-mail: john@plumpiano.com

    cell: 832-722-3033             shop: 979-242-5180

     






  • 17.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 3 days ago
    One thing about tips. The tips inside that contact the tuning pins need to be sharp and durable. Dulled tips can start to compromise the squareness of the tuning pins which is not good. 

    And one thing about levers. If you can test drive a particular lever, do so. Tuning levers and tuning techniques should not cause pain in the hand, wrist, elbow, shoulder or upper back. Avoid problems by taking care of your body and staying in good shape physically.

    Richard West  






  • 18.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 3 days ago

    So, my main reason for looking is so I can have a lighter lever...to avoid long term issues. Here is what I found:



    Kestrel 6oz (top heavy?)

    Faulk 8.5oz (top heavy?)

    Reyburn rigid ?.?oz

    Fujan 10oz (my current)

    Reyburn impact 10.5oz (top heavy because impact)

    Cassotto impact 12oz (can be weighted more near head)

    And, now understanding that a longer tip means easier flagpoling (which I use in my technique) 40mm is what I am looking for. I also measured and the difference between a 30mm tip/15⁰ head vs 40mm tip/10⁰ head would be about 9.25mm from tip circumference to the point where they intersect. So long as plate struts are beyond that point of intersection.



    ------------------------------
    Cobrun Sells
    cobrun94@yahoo.com
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  • 19.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 3 days ago
    No, a longer tip/head doesn't mean easier flagpoling. Not the type you use in your technique to render the string through the friction points. That would be side/side flagpoling, which doesn't really help you. It just makes the system less controllable.

    Take it to the extreme to understand the system. Imagine a lever with zero lift. It's parallel with the tuning pin like a crescent wrench. All your energy goes to rotation. You can lift and push to flagpole if you like, but it's at your discretion.

    Then imagine one that's just straight up, like a deep socket on the tuning pin. Rotating becomes almost impossible, but it's easy to push and bend the pin from side to side. Again, we can still push and lift to flagpole render the string, but it's uncontrollable.








  • 20.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 3 days ago
    By easier flagpoling I mean the longer tip requires less force to flex pin towards string length (like your deep socket example, I don't want rotational force, I want easier pin flex force). I do this to adjust string tension without rotating the pin foot in the pinblock. A tad more uncontrollable, yes; but more useful leverage to flex the pin, yes. So, easier forward/back flagpoling (parallel to string length).

    As long as the tuning tip is the same length for every pin I put it on the uncontrollable aspect of having a longer tip will remain consistent and thus predictable. Right?

    That is why I'm deducing that having too short of a tip may not be a better physical use.

    Thanks




    Cobrun Sells
    505.402.6481
    cobrun94@yahoo.com





  • 21.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 2 days ago
    Close. 

    Go back to the crescent wrench vs deep socket. If you're using that deep socket, and put force towards the string (flagpoling), it's REAL easy to have a percentage of that force go left/right instead of sharp/flat. Just push a degree or five off axis of the string, and that force gets wasted to left/right vectors.

    Now switch to the crescent wrench (in line with the pinblock, almost flat). Orient it parallel to the string. Press or lift the end. 100% or your force energy goes to the flagpoling effect you're looking for.

    Obviously we HAVE to be out of line with the pinblock because of the plate struts. Identify point in space on your lever where you're applying force (regardless of how you got there: high-head/low-angle, low-head/high-angle, swirly squiggle lever... doesn't matter). 
    Then draw a mental line between the tuning pin and that point

    What's important is the angle formed by the plane of the pinblock and our mental line. The higher the angle, the less control we have during rotation (left/right force vectors are induced) and the less predictability we have during deliberate flagpoling for the same reason.






  • 22.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 2 days ago
    And it's making even more sense now.

    Thank you, Nate.

    Question, how much does pin side-to-side flagpoling affect the tuning process? Wouldn't side-to-side motion (perpendicular to the string) be negligible even at a large deflection of the pin?

    Maybe Mason & Hamlin could be convinced to go back to screw stringer, just kidding.


    Cobrun Sells
    505.402.6481
    cobrun94@yahoo.com





  • 23.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 2 days ago

    There is a great series of articles on this topic by Dan Levitan in the Journal, but Part 3 (Appearing in Vol. 51 No.12 published 12/08) really explains this concept of "flagpoling" well.

    Then of course there is the whole second part of the book "The Craft of Piano Tuning" by Dan Levitan as well which focuses on "The Tuner's Hand"



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    Daniel DeBiasio
    Technical Education & Support
    ddebiasio@steinway.com
    718-267-3229
    Steinway & Sons
    ------------------------------



  • 24.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 2 days ago
    Oh, the screwstringer. That's a technology the piano world should have deserved. Top 10 on my personal "I'd fix if I had a time machine" list.

    Side/side deflection doesn't observably change the pitch, so no. You really don't need to worry about it from a stability/tuning perspective. But it's a control and energy black hole for your technique.






  • 25.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 4 days ago

    This is actually simpler than it's made out to be. Ref Dan Levitan's tuning book for the physics, but here's the basics:

    You want the lowest possible angle between the tuning pin and the point in space where you're applying force  (usually the end of the lever).

    The higher that angle is, the worse your control for the pin. That's because your force gets translated into side/side flexing rather than rotation (roll instead of yaw). How we get there (high head/low angle vs low head/high angle) does not matter from a physics standpoint.

    The angle/length DOES matter from a real world standpoint because of three things:

    1 - We have to clear plate struts

    2 - Longer heads have more mass to lug from pin to pin. No way around that.

    3 - Longer heads are… longer. All materials flex and that introduces flexibility.

    That's why we generally go for the shortest, lowest angle head we can get away with. For my system, that's 12.5º and pretty short to clear ~99% of pianos. You CAN tune with 10º or even 5º and go shorter on most pianos. But we don't get to expect to get away with it on every piano.



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    http://www.facebook.com/ReyburnPianoTech
    http://www.reyburntools.com
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  • 26.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 3 days ago
    Since I use a Levitan hammer now, plate struts are no longer an issue. The smaller angle of the head, of course, the less flexing of the pin. The tuner needs to be aware of how flexing the pin affects tuning stability. 
    I have one accessory that is useful: an thin-walled extension tip. I seldom use it but sometimes a treble pin is too close to the plate strut for the lever to fit securely on it. 

    Bob Anderson
    Tucson, AZ





  • 27.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 3 days ago

    I believe it's all in knowing your tool. I passed RPT exam with 95% stability using Hale extension lever number 3 Hale tip and 20° extra short head.



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    Larry Messerly, RPT
    Bringing Harmony to Homes
    www.lacrossepianotuning.com
    ljmesserly@gmail.com
    928-899-7292
    ------------------------------



  • 28.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 2 days ago

    Cobrun,

    I've done the extra short head, the 15 degree angle, the stiff carbon fiber thing...guess what?

    I've gone back to my old Hale extension lever with a 3" tip on it, for grands, and a modified Wonder Wand for uprights. My body and mind are so used to the "flex" inherent in these and I use it to my advantage (I think similar to what you mentioned). 

    Peter Grey Piano Doctor 



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    Peter Grey
    Stratham NH
    (603) 686-2395
    pianodoctor57@gmail.com
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  • 29.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 2 days ago
    Ah,

    I tried a Cassotto lever earlier this year with a cork handle. The tip (and adapter) were so long that because of tuning pin angle the lever head was rubbing up against the part of the grand piano plate directly behind the stretcher.

    Yikes.




    Cobrun Sells
    505.402.6481
    cobrun94@yahoo.com





  • 30.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 2 days ago
    Having a good tip I think it’s quite important, regardless of which lever you use. I used to change my tuning tips every year because I would notice little hairline cracks developing. These were Watanabe tips, cheap and available. I exchanged the tip from an old Jahn lever I had and put it on my Faulk lever and I have not changed it since, maybe eight years or so now.

    A compromised tip will introduce another level of uncertainty.

    Joe Wiencek
    NYC




  • 31.  RE: Tuning Lever Tip/Head Angle

    Registered Piano Technician
    Posted 2 days ago

    I am a fan of my Charles Faulk lever/hammer/wrench.  I prefer a short head and the CF lever has fit every grand plate I have tuned so far.  I occasionally have slight trouble on old uprights with an overhanging lid where the lid hinge threatens to rub against the lever handle.

    Just at the moment I can't say what the length or angle of the head is (probably 15°).



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    Blaine Hebert RPT
    Duarte CA
    (626) 390-0512
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  • 32.  RE: Tuning Lever Tip/Head Angle

    Member
    Posted 19 hours ago

    Here is a visually difference between 30mm/15-degree vs 40mm/10-degree tip/head. The difference is around 9.25mm.



    ------------------------------
    Cobrun Sells
    cobrun94@yahoo.com
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