This could be just the rambling of a pyschotic personal rod builder.I*m not an engineer but based on what I have observed I dont think the reel size is going to detemine weather or not to use high frames.It will effect where the first guide is put on the blank.On a shorter blank it might be that the 40HH would be so far up the blank that you couldnt use enough guides to drop the line height down to the tip and there would be to much flex in the part of the blank between the reel and the first guide.It would depend on the blank used. Because of this The 50BSVLG which is still a pretty high frame lets you run the guide a little further back and still lets the line flow through the guides without chocking and causing line slap.Line coming off the reel according to fuji since they introduced the high frame theory funnels down to the first guide and then pretty much runs in a straight line to the tip.They are now pushing this with the new concept guide placement theory.Old theories used to be that it ran in a funnel all the way to the Tip and was gradually brought down to size by guide size.It used to be that surf rods were built with a 75mm first guide then 60-50-40 30 20 16 etc.This was with S/S guides like mildrum.Fuji had trouble making ther early ceremic guides in over 50mm as they were prone to breaking and poping out of the shock rings they tried to cushion them in. I think their biggest was 65mm.the 50 was the most reliable biggest guide so that is what got used by most.They also have to deal with the publics perception on how the guides should look going down a rod and gradually decreasing in size.everything is a trade off as to how it looks and what fits in the area you have to put the guides in.I have found that there are a lot of factors and compromises for guide spacing that have to be made for not only blank performance but also for what actually appeals to ones eye as far as spacing.I use different styles and experiment only for Me-- Myself and I. All three of us like to build rods and fish. Always asking what everyone else thinks and how they are doing it so feel free to give opions.I could have it all wrong but it works for us.I heard a rod builder in Worchester Sportstman show a couple of years ago telling a perspective client how he used a geometric formula to figure guide spacing and I cracked up.I told him I had a formula also it was called a ruler and a reel with line on it.Once you do a certain blank you pretty much know where to put guides on a simular rod as a starting point.line should follow blank without sharp angles guide to guide and on casting rods line should not hit blank with a normal load on it.Whewwwww did I forget anything.Feel free to disagree!!! We*re willing to learn.Sorry for length hope it helps
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