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Double Bass Flexocore deluxe vs. original

#21
Jake deVilliers said:
Thanks for the data, Martin. I'm thinking you meant kg ie. kilograms - kilopascals are units of pressure. ;)

Translated:

G - 64.15 lbs.
D - 64.15 lbs.
A - 71.43 lbs.
E - 71.43 lbs.
Click to expand...

Jake:

Nope. That's how Pirastro has it written down on their tension chart for the Flexocor DeLuxe.

From Wikipedia:
"The kilogram-force (kgf or kgF), or kilopond (kp, from Latin pondus meaning weight), is a gravitational metric unit of force. It is equal to the magnitude of the force exerted by one kilogram of mass in a 9.80665 m/s2 gravitational field (standard gravity, a conventional value approximating the average magnitude of gravity on Earth). One kilogram-force is approximately 2.204622 pounds-force."

So if we multiply 2.20 by 29.1......the G string tension for the Flexocore DeLuxe would be 64.02 lbs. You were a bit closer than me though on the tension in pounds.
For practical purposes, it looks like the Flexicor DeLuxe G string has the same tension as the Spiro Weich A. Or almost the same as a Dominant G. That may be a bit high for my Spiro Weich E, A and D.:hmm:
 
#22
martinc said:
Jake:

Nope. That's how Pirastro has it written down on their tension chart for the Flexocor DeLuxe.

From Wikipedia:
"The kilogram-force (kgf or kgF), or kilopond (kp, from Latin pondus meaning weight), is a gravitational metric unit of force. It is equal to the magnitude of the force exerted by one kilogram of mass in a 9.80665 m/s2 gravitational field (standard gravity, a conventional value approximating the average magnitude of gravity on Earth). One kilogram-force is approximately 2.204622 pounds-force."

So if we multiply 2.20 by 29.1......the G string tension for the Flexocore DeLuxe would be 64.02 lbs. You were a bit closer than me though on the tension in pounds.
For practical purposes, it looks like the Flexicor DeLuxe G string has the same tension as the Spiro Weich A. Or almost the same as a Dominant G. That may be a bit high for my Spiro Weich E, A and D.:hmm:
Click to expand...

Kilopond, eh? **** that.
 
#28
DaveAceofBass said:
This is a bit confusing. I need to know tension in pounds. I'm considering the solo gauge in orchestral tuning since I prefer less tension. Too bad they don't make a Weich set in the Flexocore Deluxe.
Click to expand...

Dave: Yes I agree....a Weich set of Deliuxe's would be great. I mentioned the conversion in a post to Jake above.
The G and D Flexocor are the same tension....and the A and E are the same.
The E and A are 32.4kp x 2.20 = 71.3 pounds.
I think I will stick with the Spiro Weichs though...the Flexocor Deluxe are getting into Spiro Mittel territory which is too high for me.
 
#30
martinc said:
Dave: Yes I agree....a Weich set of Deliuxe's would be great. I mentioned the conversion in a post to Jake above.
The G and D Flexocor are the same tension....and the A and E are the same.
The E and A are 32.4kp x 2.20 = 71.3 pounds.
I think I will stick with the Spiro Weichs though...the Flexocor Deluxe are getting into Spiro Mittel territory which is too high for me.
Click to expand...

FWIW I've been testing G & D Weich and A & E Mittels against the Flexocore Deluxe and I find the Flexocor Deluxe A & E to be easier on the left hand than the Spiro Mittels.

After all the testing I've done between the Flexocor Deluxe and the Spiros, These are some of my conclusions:

The Spiros pizz tone is outstanding (nothing new here) and they work just fine under the bow. I have no ploblems at all regarding bow strokes. I really liked them in the orchestra setting because that extra brightness helps me to hear myself and intonate better. On the other side, they are too bright for classical solo rep so I think I'm going back to the Flex Deluxe until I finish my studies in the conservatory next year or until I can buy me a second bass and then I won't have to find a compromise regarding strings.
 
#32
:DJust wanted to do an update on the Flexocore De Luxe...pizz only.
I am very happy with my Spiro Mittel E, Spiro Weich A and Flexocore Deluxe D and G combination. The tensions of the Flexocore D and G (63 lbs each) match well with the Spiro Weich A ( 63.9 lbs). The close tension makes them very easy to play and provide a very solid, clear sound on my Eberle ply. I used them at an outdoor show this weekend and my bass has never sounded so good. It was helped by a terrific sound tech on the board.
I tried a Flexocore A but found it too hard on the hands despite a firm touch. Its tension (71 lbs) is close to a Spiro Mittel A.
The DeLuxe are a beautifully made string and hold their pitch well within a few minutes of being installed.
I'll be sticking with them for a while. Really!!!!:hyper::D
 
#33
Jake deVilliers said:
Thanks for the data, Martin. I'm thinking you meant kg ie. kilograms - kilopascals are units of pressure.
Click to expand...

(Just because I read that searching for some older info and this was 1 1/2 years ago and not ten or more...:)

kp is for kilopond and means a force, not a weight.
We don't have a weight of four times 20 to 30 kg on our basses, but a tension on our strings that a pull down of 20 to 30 kg per string would produce (on the surface on earth).
kg is wrong because it is a weight, not a force, but since the numbers are the same and people can imagine what a down-pulling force of 20 to 30 kg of weight is, the correct unit kp is often replaced by kg.
 
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#34
DoubleMIDI said:
(Just because I read that searching for some older info and this was 1 1/2 years ago and not ten or more...:)

kp is for kilopond and means a force, not a weight.
We don't have a weight of four times 20 to 30 kg on our basses, but a tension on our strings that a pull down of 20 to 30 kg per string would produce (on the surface on earth).
kg is wrong because it is a weight, not a force, but since the numbers are the same and people can imagine what a down-pulling force of 20 to 30 kg of weight is, the correct unit kp is often replaced by kg.
Click to expand...


double: Not sure what you mean here. I already quoted the tension to Jake in kiloponds in an earlier post above. That's what Pirastro used when they gave me the information.
Jake questioned me about that and I explained why they used kiloponds after checking myself. Jake did some conversions of his own and found the actual number value of a kg and a kp (kilopond) are quite close.:)
 
#36
martinc said:
double: Not sure what you mean here. I already quoted the tension to Jake in kiloponds in an earlier post above. That's what Pirastro used when they gave me the information.
Jake questioned me about that and I explained why they used kiloponds after checking myself. Jake did some conversions of his own and found the actual number value of a kg and a kp (kilopond) are quite close.:)
Click to expand...

Sorry, I didn't look back in the thread. Good explanation, but I felt for some reason Jake wanted to stick to kg.
The number value is not only close but the same for kg and kp on the (right point on the) surface of earth (by definition). So it doesn't matter if kp or kg is notated, it means the same (but of course is not the same because it is a different kind of unit).
 
#38
Francois Blais said:
I thought kp meant kilopascal.
Click to expand...


Francois: So did I until Adrian Muller referred to kilopond in his reply.

From Wikipedia: "The kilogram-force (kgf or kgF), or kilopond (kp, from Latin pondus meaning weight)........

Also from Wikipedia....the abbreviation of kilopascal is: kPa. ( kilopascal (1 kPa ≡ 1000 Pa).

We're gonna soon need a degree in physics to keep up with all this string stuff.:D
 

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