Glossary entry (derived from question below)
English term or phrase:
interrupts the shaft
English answer:
set into the shaft itself rather than mounted on it.
Added to glossary by
Charles Davis
Jul 13, 2014 08:09
9 yrs ago
English term
DELVING into DETAIL
Native in: Russian 
Works in: English to Russian, Russian, Russian to English, and 2 more.
interrupts the shaft
English
Tech/Engineering
Music
The RKM Pedal is the first device to allow complete adjustability of both leverage and reach, in an almost infinite way. The cam of the RKM Pedal ***interrupts the pedal shaft and centers the axis of the 2 adjustable arms at the dead-center of the shaft***. This produces the best rebound, action, and feel, and you can customize the feel of this cam to anything you prefer.
http://rkmdrumpedal.com/index.html
The text describes a drum pedal.
I can't really picture the principle of how it works. What is "interrupts" supposed to mean here? Does the shaft actully consist of two parts separated by the cam or what?
I would be very grateful if someone would explain the whole asterisked part to me, since it seems quite obscure. Can you please rephrase it in a simpler way so I coud understand what is actually meant here and how it works. For example, should "at the dead-center" be inderstood just as "at the very center"?
http://rkmdrumpedal.com/index.html
The text describes a drum pedal.
I can't really picture the principle of how it works. What is "interrupts" supposed to mean here? Does the shaft actully consist of two parts separated by the cam or what?
I would be very grateful if someone would explain the whole asterisked part to me, since it seems quite obscure. Can you please rephrase it in a simpler way so I coud understand what is actually meant here and how it works. For example, should "at the dead-center" be inderstood just as "at the very center"?
Change log
Jul 18, 2014 07:48: Charles Davis Created KOG entry
Responses
+2
19 mins
Charles Davis
Spain
Spain
Native in English
&
English
Specializes in field
Spain
Related KudoZ points
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24
Selected
set into the shaft itself rather than mounted on it.
Having looked at the references you've provided (thank you!), I think "interrupt" means what you've suggested: that the shaft consists of two parts separated by the cam. So the cam is actually an element of the shaft itself: it interrupts or comes between the two pieces of the rod either side of it, rather than being mounted on the shaft, out of line with the axis of the rod.
This means that the axis of the cam can coincide precisely with the axis of the shaft. Dead center does indeed mean the exact or precise center.
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Note added at 21 mins (2014-07-13 08:30:59 GMT)
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(By rod I mean shaft, since the shaft is in the form of a rod.)
This means that the axis of the cam can coincide precisely with the axis of the shaft. Dead center does indeed mean the exact or precise center.
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Note added at 21 mins (2014-07-13 08:30:59 GMT)
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(By rod I mean shaft, since the shaft is in the form of a rod.)
Note from asker:
| Thanks a lot for your explanation, Charles! It seems much clearer now. |
| Thanks everybody!!! |
Peer comment(s):
| agree |
Zsofia Koszegi-Nagy
8 hrs
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Thank you, Zsofia :)
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| agree |
John Alphonse (X)
: Yes as diagramed on their site, shaft is sort-of 2-piece adjustable. Interesting they make a big deal about it when pedals have been doing this for years including Yamaha and others
Foot pedals remain a mystery to even the most seasoned traps players! :D
9 hrs
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Thanks, John :) I must admit I don't know a lot about drum pedals, but it doesn't seem all that remarkable, I agree.
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4 KudoZ points awarded for this answer.
Comment: "Thanks everybody!!!"
Discussion
Because the shaft is interrupted and the independently adjustable levers are true to the center of the shaft, the rebound and feel are optimized. The lever that holds the beater should be set so that upon impact with the head, the beater shaft is parallel to the bass drum head. This results in the optimum rebound, because unlike most pedals where the beater shaft upon impact is at a forward angle, the shaft does not have to travel in an upward arc in order to rebound from the head. Once this adjustment is locked in, the relative leverage can be set to whatever the player prefers...by moving it forward, more power, rearward more speed.
http://www.rkmdrumpedal.com/technical-talk.html