What kind of deflection numbers are there for BD400, 420,440 bows?

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Smong2000
Posts: 137
Joined: Fri Mar 18, 2016 3:21 pm
Location: Vermont

What kind of deflection numbers are there for BD400, 420,440 bows?

Post by Smong2000 »

Curious about what numbers are showing up or expected. I sent in a bow with splintered 58's that were replaced with 69.5's. The bow is shooting considerably faster, between 25 to 40 fps faster according to the scope ring adjustment needed. If anyone has pictures showing the profile difference between 'high output' limbs and the original BD400 limbs, I would love to see them. Thanks
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Montana Mark
Posts: 120
Joined: Thu Feb 28, 2019 9:00 pm

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by Montana Mark »

I cracked a limb (by dry firing my bow within 2weeks of owning it). My old limbs were 53. The new limbs Dawn sent me were 67. The new limbs were noticably faster and I was penetrating my bag target past the fletchings (wasn’t doing that before). Had to substantially beef up my target. I was very pleased with the new limbs and I thanked Dawn for them (and, I no longer minded the $80 “dryfire fee” she charged me). Dawn also sold me the Guardian ADF which has earned its weight in gold by now!

Later, I bought a whole new front end from Danny Miller to get a forward matrix riser (sapphire has a swept back riser). The limbs Danny sold me were marked 70 but they were 1 FPS slower than the 67’s. I now have a set of backup limbs (funny, neither sets match my stock camo, but I don’t care).
Matrix Sapphire 325 (forward riser)
Matrix Grizzly (for son #1)
Matrix Grizzly (for son #2)
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Montana Mark
Posts: 120
Joined: Thu Feb 28, 2019 9:00 pm

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by Montana Mark »

I had the same thought as you after i got the new limbs. Wondered if Dawn slipped me some "super duper Assasin limbs". My speed dial jumped up 20 fps with the new limbs. I only used a chronograph (at the local bow shop) after I got my forward riser and shot 326.
Matrix Sapphire 325 (forward riser)
Matrix Grizzly (for son #1)
Matrix Grizzly (for son #2)
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ThunderXB
Posts: 431
Joined: Fri Feb 12, 2016 7:33 pm
Location: Wisconsin

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by ThunderXB »

For what it's worth, got this answer from Excal customer service:

"We are always making small in line changes to improve our products. We have made some small changes to the matrix limb. The base of the limb that goes into the pocket is slightly thicker and the radius on the edge of the limb is now molded instead of sanded off.

New limbs are available for $200.00 per set. No hard and fast rules with how much extra speed however.
"
Bulldog 400, Hawke XB30, JBK string, Dr S, TriggerT
405 Matrix, XBR, HAA, DM string, TT, ti64
405 Matrix Blackout, XBR, HAA, DM string, TT, ti64
Smong2000
Posts: 137
Joined: Fri Mar 18, 2016 3:21 pm
Location: Vermont

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by Smong2000 »

Thanks guys, been out of the loop due to illness. Better now and tried to shoot the new limbs a few times yesterday in the garage. Surprise, :shock: I can barely cock the beast by rope now! I'm not too disappointed because I know that I am a little weaker than a month ago and I have a crank for it... :thumbup:
Gotta put an arrow over a chrony one of these days just to see what they are doing. Might just have a 'real' 400fps/400gr now.
drywallerdave1
Posts: 74
Joined: Thu Jan 24, 2019 8:18 pm

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by drywallerdave1 »

How do you know the deflection on your limbs?? I have a bulldog 400 that’s about 2 years old
Smong2000
Posts: 137
Joined: Fri Mar 18, 2016 3:21 pm
Location: Vermont

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by Smong2000 »

It is written in Sharpie on the inside of the limbs under the pocket... :thumbup:
drywallerdave1
Posts: 74
Joined: Thu Jan 24, 2019 8:18 pm

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by drywallerdave1 »

I guess I have to take off my limb to find out??? Can’t see anything right now. Thanks
hankenhunter
Posts: 2978
Joined: Mon Jul 12, 2010 10:21 pm
Location: Thompson/Nicola, British Colombia

Re: What kind of deflection numbers are there for BD400, 420,440 bows?

Post by hankenhunter »

Splintered a limb on my Equinox and the replacement limbs were definitely faster. Shooting around 345 with 410 grain arrows. :eusa-dance: Higher the number the faster the limbs?
Hank
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