Hello .

Since i varnish a blank , i feel that it came a little more stiff ... Not sure because i dont have an other same blank to compare with .

For instance , a 7 foot blank m=54.40 g.
With 2 coats of Lumiseal ( with piece of pantyhose ) then m= 54,64g
So the quantity of varnish weight 0.24g .... This is 0.411% of the weight's blank ... no too much .

Then i try to estimate the aditional thickness .
If specific density( Lumiseal ) is 1.5g for 1 cm3 ( métric system ) --> Then Volume is 0.16cm3 = 160 mm3
Butt = 14.7mm .......... tip = 1.74mm ..... lenght = 212.2cm
surface ( area )= 54790.04 mm2
and thickness is = 160 / 54790.04 = 0.00292 mm = 2.92 micrometer

Do i made a miscalculation ?
If not , i think that a thickness of 0.00292 mm is realy very little .

I repeat myself , it is just a feeling that the blank is stiffer ...
I do not think it would change significantly the power nor the action significantly.
But maybe the feeling ?

Need advice from experienced rodbuilder !

Thanks.

Didier .

No, it will become a little bit softer. You've added weight, not stiffness, and now the blank must carry that weight. You can perform a CCS ERN measurement on the next one you do to prove this to yourself.

Action will be unchanged. Speed, however, how quickly the rod reacts and recovers, will slow a bit.

..........

anything and everything you add to a blank (varnish, guides, thread, epoxy, decals, ECT. affects the blank.

As Mr Kirkman said: "Action will be unchanged. Speed, however, how quickly the rod reacts and recovers, will slow a bit"

and the more you add the more it slows

Thanks for your comments .

Yes , every weight added will slow it .
Since i didn't held this blank a long time before i varnish it , I must be confused by my feelings when i thought it was stiffer .
I would hate to have to buy the blanks by two ...

This blank is a NFC MB 705 HM, that i plan to fit with TKTSG #3 ( 0.0306g ) , TLSG #3,5 for tip top ...
From your experience, is that such additional weight ( 0.24g varnish ) can change the speed enough to be noticeable by normal hand?

Didier .



Edited 1 time(s). Last edit at 06/13/2013 06:48PM by didier stephan.

Yes. Often it is. Most people can close their eyes and shake a naked blank, and then add nothing more than a tiptop and repeat the sequence and easily tell a difference. Of course, that puts all the additional weight at the tip-most end, where it has the greatest effect on this sort of thing.

...........