When using foam arbors on fly seats is it necessary to use the full length arbor as it comes? I believe they are about 3 inches or so long. Could I cut the arbor into smaller sections and have less epoxy involved to save weight or am I splitting hairs at that point?

I have a polyurethane arbor for a 18mm reel seat. It's 4.25" long. The glue area of that arbor would be 9.35 square inches. Lets say the layer of epoxy needed to install that arbor is .020" thick. You'd need less than 2/10 of a cubic inch of epoxy to cover the entire surface of the arbor. I don't know how much 2/10 of a cubic inch of epoxy weighs, but as the entire arbor only weighs 4.353 grams, I can't imagine the amount of epoxy needed to install it, would weigh more than 1 gram.

How much weight you save is going to depend on how much surface area of the arbor you're eliminating.

I'd say you're splitting hairs

David Baylor Wrote:
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> I have a polyurethane arbor for a 18mm reel seat.
> It's 4.25" long. The glue area of that arbor would
> be 9.35 square inches. Lets say the layer of epoxy
> needed to install that arbor is .020" thick. You'd
> need less than 2/10 of a cubic inch of epoxy to
> cover the entire surface of the arbor. I don't
> know how much 2/10 of a cubic inch of epoxy
> weighs, but as the entire arbor only weighs 4.353
> grams, I can't imagine the amount of epoxy needed
> to install it, would weigh more than 1 gram.
>
> How much weight you save is going to depend on how
> much surface area of the arbor you're eliminating.
>
>
> I'd say you're splitting hairs

But...if you just used half the arbor(4.353 gr) you would save 2.1765 grams.
I totally agree that its just splitting hairs...

LOL Chris .... didn't think of that, did I?

And here I was thinking I'm being all scientific by figuring out surface areas n junk, and I missed the most obvious part of the equation.

Duh me ..... and nice catch !!!! LOL

But yeah, still just splitting hairs

I usually cut my arbors into three and sometimes four pieces, and use two pieces per reel seat. This gives plenty of support for the reel seat. Thus, 2 full length arbors can be used to arbor 3 or 4 reels seats. It’s not about saving weight it’s about saving money.
Norm

David...I figured you missed it.

Norm kinda hit the mark below with the cost.

A RSA-22 from MudHole cost $2.79.

Its length is 12cm...I will make an arbor about 2cm in width...thats end up about $0.465 cents each.

Its a battle on two fronts...keepin the cost down and the weight down.

I’m with Norman. It’s not about the weight, it’s the cost for me. I also cut senkos in half versus buying Ned rig worms. I guess it’s just the bean counter (retired CPA) in me.

I use fluorocarbon line on all but one of my rods. It's heavier than braid and nylon or co-polymer lines, so I'm not really worried about weight at the reel seat.

And the only fluorocarbon line I use, is Tatsu, so I'm not really worried about cost either. But ...... in the name of saving a little money, I just won't buy those 6 packs of little Hostess chocolate covered donuts that I normally buy as a snack for when I'm out on the boat.

It's gonna bum me out, and the resultant grumbellies I'll get from not having a snack during the day may scare a fish or two. But if that's the kind of sacrifice I have to make to use a full length polyurethane arbor when an arbor is called for ..... I'll do it. I won't like it .... but dagnabbit I'll do it !!!! LOL

Daryl Ferguson Wrote:
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> I’m with Norman. It’s not about the weight,
> it’s the cost for me. I also cut senkos in half
> versus buying Ned rig worms. I guess it’s just
> the bean counter (retired CPA) in me.

I pour both Senkos and Neds with my own plastisol mix, but typically store bought Senko's will sink while a Neds floats.

Norman Miller Wrote:
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> I usually cut my arbors into three and sometimes
> four pieces, and use two pieces per reel seat.
> This gives plenty of support for the reel seat.
> Thus, 2 full length arbors can be used to arbor 3
> or 4 reels seats. It’s not about saving weight
> it’s about saving money.
> Norm


Not worth the possibility of a reel seat failing (spinning). I fill the whole area under the seat with the arbor.
Herb

Not about arbors, but check out the rear portion of a Pac Bay Minima seat some time and see how little surface area needs to be glued to a blank in order to make so strong a connection that you can't get off even when you want to.

I use 2 roughly 1-inch long arbors. If you were to use a full length arbor, it's certainly not going to hurt anything. Any additional weight would be terribly slight as the arbors just don't weigh that much. As far as additional epoxy weight - the fit of the arbor should be close to the rod blank. The amount of epoxy between the two surfaces is absolutely tiny. It's just not of any practical concern.

....................

I think a guess of .020" thickness of epoxy is way too conservative, if that much adhesive is needed I suspect that the arbor will have a very sloppy fit in the reel seat.

I size the arbor to a snug fit in the reel seat which my guess would result in a glue line less than .002 inches which makes the weight of the adhesive minuscule.

That being said. Hairs are being split.

Have fun

Thanks for everyone’s input on the subject!

So which would weigh more:

a full 3 inch arbor

3 .5 inch arbor pieces and epoxy in the gaps?

Or are you not adding epoxy to the gaps, just epoxy around the arbor?

Building rods in MA, Building the community around the world

Epoxy packed in-between multi-piece arbors would only add weight, not strength. It would also be heavier than the urethane foam arbors in that same space.

............

I have a somewhat related question:

I'm putting together components for a slow pitch build. I'd like to use a Fuji PULS-MPK17 seat with accompanying Fuji Perfect Fit Carbon Sleeve CSPTS17 - 16mm OD / 14mm ID.

My problem is I can't find an arbor to fit this 14mm ID sleeve. So, does anyone have a recommendation on an arbor that comes ready to work with this sleeve?

If not, can I put two smaller pieces of 16mm arbor above and below a section of the carbon sleeve that will show in the seat cutout?

You can turn a polyurethane foam arbor down to fit, or arbor with masking tape, or dry wall tape.
Norm

Chris Catignani Wrote:
-------------------------------------------------------
> Daryl Ferguson Wrote:
> --------------------------------------------------
> -----
> > I’m with Norman. It’s not about the weight,
> > it’s the cost for me. I also cut senkos in
> half
> > versus buying Ned rig worms. I guess it’s
> just
> > the bean counter (retired CPA) in me.
>
> I pour both Senkos and Neds with my own plastisol
> mix, but typically store bought Senko's will sink
> while a Neds floats.

I get all of my plastics to order from a local. I also get all of my jig heads from him.

Norman Miller Wrote:
-------------------------------------------------------
> You can turn a polyurethane foam arbor down to
> fit, or arbor with masking tape, or dry wall tape.
>
> Norm


Thanks, Norm. Casey over at Voodoorods.com had already suggested turning down a larger arbor. I was hoping to find an easier path, but there may not be.