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Post by cannycatchacold on Dec 29, 2010 20:25:37 GMT
Im about to tie a spring tube, now my original plan was to use a small tungsten tube and a cone, but Ive seen another dressing which Im wanting to use and also a cunning way for tube bodies using tungsten. Now from this new way to use the tungsten has got me thinking!!!!!
We know Tungsten is heavier than Copper but how much so?
Question.
A 1/2" Tungsten ways the same as x " of Copper? What = x "?
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Post by builnacraig on Dec 29, 2010 20:44:32 GMT
1" tungsten tube from Helmie weighs 2.3g, more than twice the weight of copper.
Martin is right regarding the weight of copper but different brands of tubes vary a lot in wall thickness. I got some from Ebay (Cairnmore) where 7/8" tube weighs 1g, whereas Slipstream are 0.9g per 1".
BnC
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Post by macd on Dec 29, 2010 22:00:57 GMT
intersting variations in the weight of copper tubes- i like the sound of the ebay ones Brian.
did you try different lengths from Cairnmore or just 7/8"
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Post by cannycatchacold on Dec 30, 2010 9:21:18 GMT
Interesting indeed... So as a rough rule of the thumb were saying Tungsten is twice the weight of Copper stick a tungsten cone on it and it will be a preverbile brick!! Ok lets take this a little further ;D Stick with me lads youll eventually see where Im taking this  We know Tungsten is heavier but will a 1" Tungsten tube sink fater and fish deeper than a 2" copper tube?? Both weigh roughly the same with or without a conehead. Lets say Ive 2 Park shrimps 1 tied on the Tungsten and the other on the Copper, Im fishing agains Ill say a deep pool in Newtyle which fly would get down amoungst the spring salmon? |
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Post by macd on Dec 30, 2010 11:18:34 GMT
the shorter tungsten will sink faster- while a similar weight , its denser.
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Post by stinger on Dec 30, 2010 11:30:13 GMT
the shorter tungsten will sink faster- while a similar weight , its denser. Agreed! The higher the SG the denser the material. I'm no physicist but it would appear that you would require more than double the amount of copper to achieve the same action of Tungsten assuming the dressings were the same. www.csgnetwork.com/specificgravmettable.html |
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Post by madkeen on Dec 30, 2010 11:31:20 GMT
Interesting indeed... So as a rough rule of the thumb were saying Tungsten is twice the weight of Copper stick a tungsten cone on it and it will be a preverbile brick!! Ok lets take this a little further ;D Stick with me lads youll eventually see where Im taking this We know Tungsten is heavier but will a 1" Tungsten tube sink fater and fish deeper than a 2" copper tube?? Both weigh roughly the same with or without a conehead. Lets say Ive 2 Park shrimps 1 tied on the Tungsten and the other on the Copper, Im fishing agains Ill say a deep pool in Newtyle which fly would get down amoungst the spring salmon? Macd's right the tungsten will sink faster as with the 2" copper tube has more resistance. I'm sure Martin says the fish are not deep anyway  |
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Post by builnacraig on Dec 30, 2010 13:57:44 GMT
intersting variations in the weight of copper tubes- i like the sound of the ebay ones Brian. did you try different lengths from Cairnmore or just 7/8" Ross, the Cairnmore ones were really heavy duty. I got some in 1 1/4" and 7/8". They were two packets for one so a great deal, but he has none left. I emailed him a few weeks ago and all he has now are bottle tubes. At one time he had a full range, I hope he gets them back again as I thought they were a good weight. Recently I got some copper tubing from McHardys. They sent me the 1/8" diameter tube instead of the 3/16" that I had ordered. It has a very thin wall and is much lighter. The 1/8" tube is 0.5g/1" and the 3/16" tube is 0.7g/1". When I got the 1/8" tube I thought it was too small and light but it is actually good for tying with a conehead. There are quite a range of copper tubes about. BnC |
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Post by builnacraig on Dec 30, 2010 14:04:46 GMT
Some other info I'd posted elsewhere. Obviously the weights of different bottle tubes etc will also vary.
Item
Tungsten tube 1" = 2.3g
Tungsten tube 0.5" = 1.16g
Tungsten tube 0.25" = 0.61g
Copper tube 1.25" = 1.5g
3/4" copper tube = 0.75g
Aluminium tube ? = 0.4g
Eumer tungsten cone lar = 1.1g
Eumer tungsten cone med = 0.55g
Wet & wild cone 1/4" = 0.52g
22mm brass bt = 2g
12mm brass bt = 1.3g
9mm brass bt = 0.7g
6mm brass bt = 0.53g
22mm alum bt = 0.6g
15mm alum bt = 0.3g
1 1/4" plastic tube with liner = 0.12g
If you add a large Eumer tungsten cone to a 1" tungsten tube you have 3.4g . You could spin with that!
BnC
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Post by madkeen on Dec 30, 2010 14:40:26 GMT
A bit off topic but if anyone wants 100 - 1 1/4" brass tubes unlined that weigh 2g then let me know as I'll never use them.
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Post by macd on Dec 30, 2010 14:50:08 GMT
ill take them
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Post by macd on Dec 30, 2010 14:55:06 GMT
thanks for the list of weights brian, very useful info.
i recently made a batch of fles for an early kharlovka week and mixed 1" tungsten, 1 1/4" copper and 1" coneheads using a large eumer tungsten cone.
the tungsten tube is brutal and I imagine a really heavy leader is needed for that. I found the copper tubes and conehads to feel similar, but the cone is deceptive on the finished fly the weight is so concentrated.
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Post by madkeen on Dec 30, 2010 15:14:05 GMT
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Post by macd on Dec 30, 2010 15:15:59 GMT
thanks alan
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Post by cannycatchacold on Dec 31, 2010 8:28:07 GMT
Cheers for the input lads its all been very interesting. Im going to tie a Bertie dastard using Dave's method of front mounting the. Ive ordered some just to try. Ill post it up once Ive got my materials and tied it.
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