smoothound
Member
Hi folks, sorry I know these potatoes have been boiled already - but I would welcome your views... (and sorry it's long)
For donkey's years I tuned bare-shaft vs fletched without tape to replicate vane-weight - it worked well enough.
But more recently there is advice to add tape to simulate the weight of the fletching - and this seems totally logical - so I have dabbled with that over past few years.
I shoot formula and have owned and tuned : excel, quattros, F4s and UUkha x-curves - plus old Yammy carbon ceramics. I have had various spines of Aces, X7s and X-busters - with every conceivable fletching, insert and point etc.
For me, adding the tape universally makes the bare shaft immensely stiff - even cranking limbs up to around 7lb over that recommended for a given arrow spine - still stiff! Going from 70 up to 200 grain points - still stiff.
For example, 29.5 inch X7 2114s with 47-48lb on my fingers and 150 grain points come out stiff - and I have a good strong release.
and I am talking 12 inches or so to left of group and tail to right at an angle of 30 degrees at 20yds.
Have checked bow weight on 4-5 different scales to check (wow how those vary too!) confirms that I am selecting the theoretically correct spine of arrows
As soon as i remove the tape - the results improve - then have to un-crank the bow and go for lighter points etc - but tuning is easy again
I want to ask Easton directly but can't find an email - It's not covered in their tuning guide or web-pages - or the FITA tuning manual.
I goes against logic, but I think i will go back to how I used to tune, otherwise I would end-up choosing arrows with spines 2 or even 3 levels weaker than expected to get a decent tune using tape. - and that has me concerned that it may not be giving good results.
I guess 'just shoot' will be the advice - and that is what i am doing - but it would be great to track down some evidential/science based advice from manufacturers on this issue - so any guidance or pointers to robust text is welcomed.
FYI I have a pretty good grasp on the theory about adjusting the dynamic spine of an arrow via measures like brace-height, arrow length and nodes etc, string weight and type, bow weight, weight at front and back of arrow, release quality, finger tension distribution etc plus relationship to tiller and nocking point etc. so no need to cover that...
I am more interested in other's experience in using tape - have any had similar or different experience?
cheers
For donkey's years I tuned bare-shaft vs fletched without tape to replicate vane-weight - it worked well enough.
But more recently there is advice to add tape to simulate the weight of the fletching - and this seems totally logical - so I have dabbled with that over past few years.
I shoot formula and have owned and tuned : excel, quattros, F4s and UUkha x-curves - plus old Yammy carbon ceramics. I have had various spines of Aces, X7s and X-busters - with every conceivable fletching, insert and point etc.
For me, adding the tape universally makes the bare shaft immensely stiff - even cranking limbs up to around 7lb over that recommended for a given arrow spine - still stiff! Going from 70 up to 200 grain points - still stiff.
For example, 29.5 inch X7 2114s with 47-48lb on my fingers and 150 grain points come out stiff - and I have a good strong release.
and I am talking 12 inches or so to left of group and tail to right at an angle of 30 degrees at 20yds.
Have checked bow weight on 4-5 different scales to check (wow how those vary too!) confirms that I am selecting the theoretically correct spine of arrows
As soon as i remove the tape - the results improve - then have to un-crank the bow and go for lighter points etc - but tuning is easy again
I want to ask Easton directly but can't find an email - It's not covered in their tuning guide or web-pages - or the FITA tuning manual.
I goes against logic, but I think i will go back to how I used to tune, otherwise I would end-up choosing arrows with spines 2 or even 3 levels weaker than expected to get a decent tune using tape. - and that has me concerned that it may not be giving good results.
I guess 'just shoot' will be the advice - and that is what i am doing - but it would be great to track down some evidential/science based advice from manufacturers on this issue - so any guidance or pointers to robust text is welcomed.
FYI I have a pretty good grasp on the theory about adjusting the dynamic spine of an arrow via measures like brace-height, arrow length and nodes etc, string weight and type, bow weight, weight at front and back of arrow, release quality, finger tension distribution etc plus relationship to tiller and nocking point etc. so no need to cover that...
I am more interested in other's experience in using tape - have any had similar or different experience?
cheers