Archery Nation



 
HomeCalendarGalleryFAQSearchMemberlistUsergroupsRegisterLog in
Like Us
Order your Fobs here
Photobucket
Who is online?
In total there are 3 users online :: 0 Registered, 0 Hidden and 3 Guests

None

Most users ever online was 74 on Mon Aug 07, 2017 11:52 am
Navigation
 Portal
 Index
 Memberlist
 Profile
 FAQ
 Search
Latest topics
» FOB's and NAP Apache
Sat Oct 25, 2014 11:09 pm by dano

» noob
Sat Oct 25, 2014 10:53 pm by dano

» Why?
Wed Jan 22, 2014 12:08 am by tradermike69

» New Guy from Missouri
Mon Jan 20, 2014 3:16 pm by tradermike69

» New Wanna Be Here
Mon Jan 20, 2014 12:02 am by tradermike69

» Flu Flu Arrows with a compound bow
Sun Dec 08, 2013 12:53 pm by oldmanontheriver

» i need help, with fobs not mentaly
Fri Mar 15, 2013 10:19 am by Norwegian Woods

» New member from Norway
Fri Mar 15, 2013 10:07 am by Norwegian Woods

» QAD Rest set up
Thu Feb 07, 2013 8:31 pm by grumpy413

» New to fobs.
Sun Feb 03, 2013 7:36 pm by Plrosey33

» How much will the extra weight affect arrow spine?
Sat Dec 22, 2012 11:15 pm by Stykbow1

» New guy!
Sun Dec 16, 2012 3:13 pm by trainman673

Loading...
Search
 
 

Display results as :
 
Rechercher Advanced Search
December 2018
MonTueWedThuFriSatSun
     12
3456789
10111213141516
17181920212223
24252627282930
31      
CalendarCalendar

Share | 
 

 Arrow velocities

Go down 
AuthorMessage
Varminter



Posts : 5
Points : 9
Join date : 2011-01-12

PostSubject: Arrow velocities   Thu Jan 13, 2011 1:20 am

Here is an interesting one for all the technical guys out there.

I have two sets of arrows, one set bought and cut to my length, and one aquired along with a recent bow trade.
Both are 340 n-fused Epics. similarly fletched ( sorry no FOB's YET).
Bow is set on 60#.
Set 1 : Length = 31.29 " with 125 gr field points . Total arrow weight = 475 gr
Set 2 : Length = 33" with 100 gr field points. Total arrow weight = 479 gr

Almost no appereciable difference in weights.
NOW COMES THE MYSTERY -- at least to me.

Chronograph readings taken 6 feet in front of bow.
Set 1 : Avg speeds of 3 arrows = 235 fps.
Set 2 : Avg speed of 3 arrows = 248 fps.

How come ??

Should set # 1, the shorter, lighter arrows not have given the fastest readings ? .

Any thoughts on this one would be welcome.
Back to top Go down
View user profile
drcoffee



Posts : 5
Points : 7
Join date : 2011-01-17

PostSubject: Re: Arrow velocities   Tue Jan 18, 2011 2:39 pm

Thinking out loud:

1) Nock tightness. switch them around and check again
2) the heavier arrow has more retained energy than the lighter one off the bow it may have more momentun in the near distance. Check gain at 15 yard.
3) although they look identical, the fletching may have more drag on the lighter arrow.

Back to top Go down
View user profile
Paul Morris
Admin
avatar

Posts : 42
Points : 64
Join date : 2011-01-05
Age : 58
Location : Arizona

PostSubject: Re: Arrow velocities   Wed Jan 19, 2011 3:25 pm

Interesting...Longer arrows carry better but I do not think you would see anything that close. My guess is the spin difference between set ups is the cause.

Did you get muzzle speed as well? Fun stuff

Back to top Go down
View user profile http://www.starrflight.com
ace7038



Posts : 15
Points : 17
Join date : 2011-01-04
Age : 48
Location : Skunk's Misery, On

PostSubject: Re: Arrow velocities   Thu Jan 19, 2012 8:46 am

Oh man... this is the stuff I love to find and then try to figure out why!
I have got to get my chrony back from my brother...he borrowed it three years ago...
Back to top Go down
View user profile
VAhunter08
Admin


Posts : 366
Points : 423
Join date : 2011-01-12
Age : 49
Location : Central Virginia

PostSubject: Re: Arrow velocities   Fri Jan 20, 2012 6:17 pm

I'm listening, I'm listening, go on. I wish I had some popcorn this could get good (pulls up chair).

Hey Paul business must be good I haven't see you in a coons age. LOL

Will

_________________
08' Martin Saber, 27.5" DL 62# DW 7"BH 32.25"ATA, Limbsaver Elite Prism Sight 4 Fixed Pin Plus 1 Adjustable,  NAP Apache Dropaway Rest, Tru-Ball Rack Master Pro Release, Harvest Time Archery HT-2 28" and FOB's with Grim Reaper (Razor tip Mech & Hades Fixed) BH & Red Feather Archery Phoenix BH
Back to top Go down
View user profile http://www.archeryaddix.com
roosclan



Posts : 51
Points : 69
Join date : 2011-02-12

PostSubject: Re: Arrow velocities   Sun Jan 22, 2012 11:51 pm

drcoffee wrote:
Thinking out loud:

1) Nock tightness. switch them around and check again
2) the heavier arrow has more retained energy than the lighter one off the bow it may have more momentun in the near distance. Check gain at 15 yard.
3) although they look identical, the fletching may have more drag on the lighter arrow.

I think #1 and #3 are probably the best explanations.
As for #2, the lighter arrow would have more velocity at the start and less downrange due to the heavier arrow's momentum. HOWEVER, only 4gr difference would mean maybe 1fps, not 13fps.
Back to top Go down
View user profile
Sponsored content




PostSubject: Re: Arrow velocities   

Back to top Go down
 
Arrow velocities
Back to top 
Page 1 of 1
 Similar topics
-
» Red Arrow replacement arrived!
» Red Arrow, Lutterworth - Sponsor Not Paying - Advice?
» [GROUP DECISION]Deke's Dilemma: To Treasure, or Not to Treasure
» Still struggling in Randori?

Permissions in this forum:You cannot reply to topics in this forum
Archery Nation  :: Nuts and Bolts of Arrow Flight-
Jump to: