Carbon Express shooters…need some help!!!

[Oliverstacy]

I was out driving around minding my own business checking trail camera when all of a sudden I found myself in the parking lot of an archery shop back where I grew up (I usually gloss over the details of how I end up in such a place).

Anyway I’ve been looking for a good deal on some 340-spine carbons for my 60” Kanati 57 @ 29” (drawn to 29.5”) and they offered me a really good deal on some Carbon Express Pile Drivers…nice looking shaft, but I’ve never used CE.

So here’s what I wondering…I’ve been shooting Beman MFX and Easton Axis 400’s that aren’t stiff enough.  Currently they have 100-grain brass adaptors (some have 50 grain) and even with just 150 grains total (point and adaptor) they are still too weak.  My current arrows are 30.5” and I could drop .25” on these new shafts if that would help.

So should I install the factory aluminum adaptors or get some the 50-grain brass adaptors?  I don’t mind shooting heavy field points/broadhead and figure the arrows will end up in the low to mid 600’s finished (Fletcher are these still considered wimpy?).

Anyway some help would be great…the bow is smoke’n fast and I’m hoping these new arrows are the ticket.  I have a lot of different field points in various weights 100 to 300 grains so I would be able to weaken these and get good arrow flight.

Thanks,

Josh

[Old York]

HUH?  

[Oliverstacy]

Originally posted by Old York:
HUH?      

Basically I'm wondering if I'll need to add more than 300 grains (largest field point) up front...if so then I’ll need to add either a 50 or 100-grain brass adaptor.

Everything that I’ve tried with 400’s show they are still too weak.

Thanks,

Josh

[Old York]

The CE PileDriver 350 and PileDriver Hunter 350 are listed both with 0.345" deflection ASTM. Their diameters and GPI are different.

N.B.! CE's deflections are model-specific. Stu's DSC calculator can get you closer into the ballpark.

[Oliverstacy]

Originally posted by Old York:
The CE PileDriver 350 and PileDriver Hunter 350 are listed both with 0.345" deflection ASTM. Their diameters and GPI are different.

N.B.! CE's deflections are model-specific. Stu's DSC calculator can get you closer into the ballpark.

Regular black CE PileDriver 350...all black version.

Thanks,

Josh

[Reaper TN]

Josh....I don't know what kind of broadhads you use, but I would tune with the 100 grain brass insert.  Lots of good broadheads in the 100 to 200 grain range.  If you use a standard insert you limit yourself to just the really heavy broadheads. Leave your shaft long when you start tuning, say 33 inches to start.  Don't glue your insert, wrap insert with with a piece of plastic grocery bag and push it in shaft for a temporary hold.  Then start flingin' arrows and tune.  A Dremel tool works great for cutting carbons while tuning.

BTW....I finally settled on an ILF riser and limbs and ordered one. I will email you in a few days with the specs for a new string for it.

Benny Clark

[Oliverstacy]

Benny,

Looking forward to the string!  Sounds like you finally got what you've been wanting!

Old York,

According to Stu's cal. I'd need 50 grain adaptors and 150 points...this was with the Heritage shaft, the PileDrivers weren't in there and I could get the "other" to work right.

I have some Beman MFX 400's that I was thinking about putting the stock aluminum adaptors in...they'd need 125 grain points.

STU's Calculator...nice tool!  How close is it to real life?

Josh

[JimB]

Josh,I use .340 Gold Tips,30" long on a Mojo Stik that,at my draw is 55#.I use a 100 gr insert and a 295 gr point.FOC is about 26%.Total arrow weight is 709 grs.You may need a little less point weight,depending on shaft diameter,cut of your sight window etc.

[Fletcher]

Hey Josh, sounds like you're having fun, anyway.  600+ arrow weight is plenty manly and your Kanati will handle it quite well.  I do believe she would be more pleased with something that has some spirit in it, tho.  In my world, I would try around a .300 deflection, ie 85-89 lb, and 160 gr points.  For a higher FOC, stiffen things up a bit and go to a 200 gr head.  You would be shooting 700+ grains   :eek:   but she will handle it and its gonna take a lot to stop them.

[Arwin]

250's with 160 up front sounds good.

[inthere10x]

I did the numbers in Stu's cal "other", using your numbers, plus a 12 strand string (?), 1/16 before center = 65.1. I used the piledrivers which are 10.4 grain per inch. The results 31" long, 150grn point, 50gr insert, 5" fletching = 63.8 (total weight 541/9.2 per inch). I would start around 32.5" with the above insert and point.