I know this may sound a really dumb question, but as I'm relatively new to fly fishing it's something that I have been pondering for a while .

What would happen if you put say a weight 7 line onto a rod that was a #4/5 ?

Would it still cast OK, or would it be worse or better ? and how crucial is it to match line to rod ?

Paul

I am looking forward to the replkies on this one....wheres zoomer?

short answer is no dont do it,.
What type of rod is it? more than likely it will just be a sloppy car aerial, with all that extra weight. going up from say a 5 to a 6 some times helps .....but thats too big a leap.

I dare say there's some rods that would do it!

Paul - i don't know what the technical terms are but what you are really trying to achieve is matching the strength/spring power (again don't know official term) to the weight of the line. If you use too heavy a line it will not have the strength/spring power () to straighten the rod tip at desired speed and casting your loop nicely. A heavier line than the rating will in effect make the rod bend more and straighten more slowly, obviously this effect increases the heavier you make your line. The rod acts as a spring when you stop it at the end of the cast, the heavier weight you pull on the spring the slower you will make it.

By all means try your 7 on the lighter rod but be careful casting it, i'm sure you could probably damage a rod with brutal casting when it's way overloaded.

Hope that helps

I'm sure someone with real knowledge like David Norwich will come along and be able to explain it properly!

[QUOTE=Whingeing pom;579845]I am looking forward to the replkies on this one....wheres zoomer?

i'd go with the sloppy car aerial annalogy

alford, they do this for short line nymphing type things because the heavier line will balance the rod with less of it, less line = less weight sort of thing,
interesting to try but it will would be whole lot easier with the right line weight.

Scotty, pretty spot on there.

The heavier line slows down the recovery rate of the rod (how quickly it straightens from bent). The slower the rod tip moves the slower it pulls the line through the air. So as result you get less line speed, that is, the loop moves slower. The slower it goes the less distance it will travel.



Frank

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Frank Williams APGAI

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Cheers Guys,

I've ordered a 4 off Pirate to compliment the new rod.

After all that you might find a #5 line suits your #4-5 rod better, especially as you're relatively new to fly-fishing

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eek, good point.