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Dankung Tube Sizes Explained


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#41 Hrawk

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Posted 11 December 2012 - 08:39 PM

Is this dankung rubber reliable thinking about buying some 18 42 of it


VERY reliable.

1842 is a great first purchase. Single lengths for shooting small ammo, double it up and go hunting.

#42 RawSlingshots

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Posted 23 January 2013 - 05:58 AM

Guys, what thera tube would you suggest for around 1/4'' steel?

and what for around 3/8'' steel?

cheers!



#43 Knotty

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Posted 23 January 2013 - 12:35 PM

Just found this message thread. So much good info, especially for a newbie like me. Thanks!

#44 Henry the Hermit

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Posted 23 January 2013 - 01:02 PM

Guys, what thera tube would you suggest for around 1/4'' steel?

and what for around 3/8'' steel?

cheers!

 

The beige might be OK. Yellow and stronger is too strong for .25, but OK for 3/8 .



#45 zwillie

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Posted 23 January 2013 - 01:27 PM

Hi,

I added the Mega Rubber (startertube for model airplanes) to the list.

13228725pg.jpg

 

http://www.emc-vega....arubber?cat=159

 

Zwillie



#46 ZorroSlinger

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Posted 28 January 2013 - 04:07 PM

Noobie question: What is CROSS SECTION AREA? I searched and cannot find explanation except that it has to do or related to 'draw strength' but no further details given. Is Cross Section Area given by manufacturer or one uses formula to determine? Also, is CSA only applicable to tubes (not flat bands?) and how do we use CSA to evaluate or make comparisons of the different tubes?


Edited by ZorroSlinger, 28 January 2013 - 04:11 PM.


#47 DaveSteve

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Posted 28 January 2013 - 05:39 PM

I calculate the circular area OD and subtract the circular area ID.

Formular to calculate the circular area: r2 x 3.14   (radius2 x pi)

Cross section is the 'rubber area' when you look at the end of the tube.



#48 Knotty

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Posted 28 January 2013 - 06:12 PM

Since flat bands also have a cross sectional area that can be calculated, I wonder if a tube and flat (made from the same raw material) with the same CSA would have the same performance?

#49 CK Slingshots

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Posted 01 February 2013 - 07:09 PM

Thanks for the info Bro!



#50 Hrawk

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Posted 11 April 2013 - 09:51 PM


Great information! I remember how confused I was before I figured out (actually someone told me) how Chinese rubber is sized. All the newbs should send you something. smile.png


I agree



#51 Hrawk

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Posted 11 April 2013 - 10:03 PM

But we Chinese archers like to play flat rubber band


This was just for clarification as most of us western shooters refer to these size tubes as 'Chinese Tubes'

#52 ruthiexxxx

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Posted 06 June 2013 - 01:14 AM

can anyone tell me how 50/80 might compare in performance with Theratube Black please ?

#53 Hrawk

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Posted 06 June 2013 - 03:38 AM

can anyone tell me how 50/80 might compare in performance with Theratube Black please ?

 

If you take a look at the Tube Cross Section data on the chart you will see that 5080 has almost exactly half the rubber that TT Black has therefore, around 50% of the draw weight and power.



#54 ruthiexxxx

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Posted 06 June 2013 - 03:45 AM

can anyone tell me how 50/80 might compare in performance with Theratube Black please ?

 
If you take a look at the Tube Cross Section data on the chart you will see that 5080 has almost exactly half the rubber that TT Black has therefore, around 50% of the draw weight and power.


Yes, I had seen that. It's just that there seem to be huge differences in performance regardless of the amount of rubber. The exercise tubes i got locally before i got theratube look very similar, and indeed take a lot of pulling, but their performance was pathetic compared to Theratube.. The salient factor seems to be the alacrity with which the stretched tube strives to regain it's normal length. Some things just seem 'snappier' than others

#55 Hrawk

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Posted 06 June 2013 - 04:13 AM

If they bands are pure latex, or very close to it, performance should be very similar.

 

There's a lot of synthetics getting around now which totally suck balls.



#56 tristanjones

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Posted 14 July 2013 - 08:42 AM

This chart helped me a lot! Thanks Hrawk!

Tristan

#57 U.S. Male

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Posted 29 July 2013 - 09:44 AM

Can someone that has ordered from Dankung tell me about how long it takes to receive orders from them?

#58 reset

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Posted 29 July 2013 - 10:18 AM

Took about 2 weeks. 11 working days if i remember from China. Just as fast as i could get it out of the States and shipping was cheaper slightly. 



#59 U.S. Male

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Posted 29 July 2013 - 10:20 AM

Thanks reset. Shipping was free so I couldn't get that any cheaper.

#60 wangyue

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Posted 27 August 2013 - 11:15 PM

我是中国的 我们都在找你们的宽皮 你们却在找我们的圆皮筋






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