In joeklecko's post - http://www.ganggreennation.com/2011/4/12/2106224/the-quandry-with-olbs
he put out some intresting things regaurding OLB's potential to bust with something the original writer called his Twitch number. He started by measuring a players explosive power and if that number was greater than 1.05 then he went ahead and measured out their Twitch number.

Original Writer - http://www.footballsfuture.com/phpBB2/viewtopic.php?t=439601

  For fun/bordam I decided to use the formula for the Twitch on Potential LBs the jets could pick up or add to the 53 man roster, I didnt bother attempting to figure out the explosive power due to the fact I didnt know how he wrote in the broad jump into the equation and didnt have a control to experiment. All numbers for players I found on NFLDraftScout.com.

Explosive Power = (Vertical + 3.5 * broad jump) * (weight/height)/3000 If anyone wants to attempt to figure that out

Twitch = Shuttle - 2 * 10 yd split - (1.60 - 10 yd split)

Player Key Above

High Risk Players Twitch 1.20 or higher

Keith Darbut DE/OLB, UDFA Baldwin-Wallace
Height: 6'4''  -  Weight: 229  -  Twitch: 1.39  -  3 Cone - 7.28  -  Shuttle - 4.45  -  10 Yard - 1.46  -  Vertical - 38           Broad Jump - 10'06'' 
  Put him as very Doubtful that the Jets pick him up because he had workouts with 7 teams and one of them will probably try and claim him before the Jets

Moderate Risk Twitch 1.10 - 1.19

Jamaal Westerman DE/OLB, Jets Current Roster - Thought he was going to make a big jump last year maybe this year with Jason Taylor gone.
Height: 6'2''  -  Weight: 257  -  Twitch - 1.18  -  3 Cone - 7.03  -  Shuttle - 4.38  -  10 Yard - 1.60  -  Vertical - 36.5
BroadJump  10'02''                                                                                                                                                                                                                                                                                                                 

Cody Brown DE/OLB,  Jets Practice Squad - Really liked him out of college but not making the 53 man roster makes me think like the rest of that UConn class that he will become nothing though I hope I'm wrong.                                      Height: 6'2''  -  Weight: 257  -  Twitch - 1.18  -  3 Cone - 7.10  -  Shuttle - 4.40  -  10 Yard - 1.62  -  Vertical - 36.5
Broad Jump - 10'00''

Zane Parr DE/OLB, UDFA Virginia
Height: 6'4''  -  Weight: 281  -  Twitch - 1.18  -  3 Cone - 6.91  -  10 Yard - 1.70  -  Shuttle - 4.48  -  Vertical - 34
Broad Jump - 9'04''

Jonathan Freeny DE/OLB, UDFA Rutgers - Wouldnt mind bringing another Rutgers DE in.
Height: 6'3''  -  Weight: 250  -  Twitch - 1.17  -  3 Cone - 7.07  -  Shuttle - 4.34  -  10 Yard - 1.57  -  Vertical - 37.5
Broad Jump - 10'03''

Cobrani Mixon ILB, UNFA Kent State - Really like this guy I know he is an ILB but put him in because I really like this guy could become a great guy on the inside he has had back to back seasons with high production.  
Height: 6'1''  -  Weight: 241  -  Twitch - 1.13  -  3 Cone - 6.99  -  Shuttle - 4.34  -  10 Yard - 1.62  -  Vertical - 35.5
Broad Jump - 09'11''

Mid to Low Risks -  > 1.10 in the Twitch formula & ran slower than a 7.0 in the 3 Cone

Steven Friday DE/OLB, UDFA Virginia Tech - One year starter put up good numbers had 2 sacks in the BC game and lined across from Constanzo has good upside                                                                                                               Height: 6'3''  -  Weight: 240  -  Twitch - 1.04  -  3 Cone - 7.28  -  Shuttle - 4.27  -  10 Yard - 1.63  -  Vertical - 32.5
Broad Jump - 10'04''

Quinton Spears DE/OLB, UDFA Prairie View A&M - Worthwhile OLB prospect
Height: 6'5''  -  Weight: 236  -  Twitch - 1.03  -  3 Cone - 7.27  -  Shuttle - 4.25  -  10 Yard - 1.62  -  Vertical - 34
Broad Jump - 10'02''

Quentin Davie OLB, UDFA Northwestern - A starter at OLB worth bringing in great measurables and 31 bench press
Height: 6'4''  -  Weight: 232  -  Twitch - 0.95  -  3 Cone - 7.26  -  Shuttle - 4.20  -  10 Yard - 1.65  -  Vertical - 35
Broad Jump - 09'07''

Mathais Kiwanuka DE/OLB, Possible Giants Free Agent
Height: 6'6''  -  Weight: 266  -  Twitch - 0.89  -  3 Cone - 7.29  -  Shuttle - 4.15  -  10 Yard - 1.66  -  Vertical - 32
Broad Jump - 10'00''

Low Risks -  > 1.10 in the Twitch formula & ran faster than a 7.0 in the 3 Cone

Brandon Long DE/OLB, Signed a future/reserve contract with Jets before that was a UDFA with 49ers
Height: 6'3''  -  Weight: 254  -  Twitch - 1.05  -  3 Cone - 6.88  -  Shuttle - 4.37  -  10 Yard - 1.64  -  Vertical - 37.5
Broad Jump - 10'09''

Jeff Tarpinian ILB, UDFA Iowa He had a private workout with the jets extremly intresting measurables
Height: 6'3''  -  Weight: 238  -  Twitch - 0.96  -  3 Cone - 6.78  -  10 Yard - 1.54  -  Shuttle - 4.10  -  Vertical - 37
Broad Jump - 10'05''

Inconclusive Players Due to lack of numbers

Elijah Joseph ILB UDFA Temple Had a private workout with the Jets

Garrett McIntyre OLB, Signed a future/reserve contract with Jets before that was a UFL player