Old Darton viper what speedam I shooting?
#1
Thread Starter
Join Date: Sep 2003
Location: montreal/quebec /canada
Posts: 80
Old Darton viper what speedam I shooting?
I have a 13 year old Darton viper with the energy wheels in between round and cams, My arrow weight is 410gr (carbon) total, my draw length is 29" and my pull is 62 pounds, What speed do you think I am getting from this bow? Thx, Elmer
#3
Nontypical Buck
Join Date: Feb 2003
Location: Eastern PA USA
Posts: 1,398
RE: Old Darton viper what speedam I shooting?
Elmer;
I just sold a Viper like yours last year, and did have it chronographed. I was getting a little over 250 fps with the arrow weight you mentioned. Really only about 10 fps slower than my current bow until I went pretty low with arrow weight. Great shooting bow, and a good performer for an old timer.
I just sold a Viper like yours last year, and did have it chronographed. I was getting a little over 250 fps with the arrow weight you mentioned. Really only about 10 fps slower than my current bow until I went pretty low with arrow weight. Great shooting bow, and a good performer for an old timer.
#4
Join Date: Sep 2005
Posts: 72
RE: Old Darton viper what speedam I shooting?
#5
RE: Old Darton viper what speedam I shooting?
Fastest bow I ever shot was a viper , faster than the black knite I had , but it was 1" longer and 10 lbs heavery , It shot 315 at 73 lbs and 30 inches with a 360 grain arrow . Blazen . Id bet your in the 280s .
#6
Thread Starter
Join Date: Sep 2003
Location: montreal/quebec /canada
Posts: 80
RE: Old Darton viper what speedam I shooting?
ORIGINAL: ijimmy
Fastest bow I ever shot was a viper , faster than the black knite I had , but it was 1" longer and 10 lbs heavery , It shot 315 at 73 lbs and 30 inches with a 360 grain arrow . Blazen . Id bet your in the 280s .
Fastest bow I ever shot was a viper , faster than the black knite I had , but it was 1" longer and 10 lbs heavery , It shot 315 at 73 lbs and 30 inches with a 360 grain arrow . Blazen . Id bet your in the 280s .
Elmer
#7
Nontypical Buck
Join Date: Feb 2003
Location: Eastern PA USA
Posts: 1,398
RE: Old Darton viper what speedam I shooting?
ijimmy:
Are you sure you're not thinking about a Hoyt Viper? They were very fast bows with low brace height. The Darton Viper is 43" ata with a 7" brace. The magnesium High Energy Wheels did store decent energy for a "soft" cam. They were rated at 230 AMO and (I think) 295-300 IBO. Again, pretty fast for a smooth drawing older bow, but mine (same specs as elmer deer's except mine was 63#) did 255 with a 415 gr. arrow. It was actually a little faster than my Pro 40 Wheely (also 62#, 29")with heavier (500 gr.) arrows, but with arrows under 400 grains, it couldn't quite keep up, maybe due to the steel cables and other axle draw length adjusters, etc.
Are you sure you're not thinking about a Hoyt Viper? They were very fast bows with low brace height. The Darton Viper is 43" ata with a 7" brace. The magnesium High Energy Wheels did store decent energy for a "soft" cam. They were rated at 230 AMO and (I think) 295-300 IBO. Again, pretty fast for a smooth drawing older bow, but mine (same specs as elmer deer's except mine was 63#) did 255 with a 415 gr. arrow. It was actually a little faster than my Pro 40 Wheely (also 62#, 29")with heavier (500 gr.) arrows, but with arrows under 400 grains, it couldn't quite keep up, maybe due to the steel cables and other axle draw length adjusters, etc.
#8
RE: Old Darton viper what speedam I shooting?
I had a 1992 Darton Viper, bought as a leftover from Bowhunter's Discount Warehouse. I think one of my faster bows for the time, and even decent by today's standards. At 27.5" draw and 61# shooting IBO legal it would shoot low 280's. Never got a chance to get it set up for hunting. Got me a staff shooter position with XI and had to sell the Viper. I liked the bow well enough, especially the $200 price tag.
#9
RE: Old Darton viper what speedam I shooting?
I have a 13 year old Darton viper with the energy wheels in between round and cams, My arrow weight is 410gr (carbon) total, my draw length is 29" and my pull is 62 pounds, What speed do you think I am getting from this bow? Thx, Elmer
take off 10 fps for the 29" of draw
- 287
Take off 16 fps for the 8 pounds under 70
-271
5 grains added in arrow weight above IBO (5 grain/lb = 350 grain arrow) - 1 fps 410 - 350 = 60/5 = 12 fps
259 fps Assuming you have nothing on the string. Realistically, with a peep, loop, and 2 small string silencers, I'd say your around 245 - 250 fps.
410 grain arrow at 247.5 fps would be 56 ft lbs of KE which is plenty for anything in North American provided your bow is tuned and you make a good shot with a razor sharp broadhead.
#10
RE: Old Darton viper what speedam I shooting?
Joe , the bow Im thinking of had radical dual cams , around 5 1/2 inches of brace , and 40+ inches axil to axil , a darton .
come to think of it , it may not have been that particular model .
come to think of it , it may not have been that particular model .