Delay in Reverse Thrust

[sprangerjack 0]

This seems to be a matter that has been discussed but i havent come across a solution. I lust landed in KMDW winds are 04013G17KT so i increased my Vref to 134 ( 1/2 of 13 + 4) Auto Brake level 3. Ok.... App was manual. At 50feet i reduced trottles to idle to allow a touchdown at vref. As soon as the main gear touched i decided instead of pulling the trottles back to reverse ill use F2. ( ive been having this problem if i use the trottles, thats why i decided to try F2.) The Auto brake engaged as normal, however by time the reversers were deployed i was at 68kts. I had 6 seconds between touchdown and reverse selected to "reverse green". Could someone plz tell me whats wrong? This has only happend since SPc. I never wrote about it because i guess like the others, im hoping that a solution would have come forth before. Please let me know

 

Sean

 

This seems to be a matter that has been discussed but i havent come across a solution. I lust landed in KMDW winds are 04013G17KT so i increased my Vref to 134 ( 1/2 of 13 + 4) Auto Brake level 3. Ok.... App was manual. At 50feet i reduced trottles to idle to allow a touchdown at vref. As soon as the main gear touched i decided instead of pulling the trottles back to reverse ill use F2. ( ive been having this problem if i use the trottles, thats why i decided to try F2.) The Auto brake engaged as normal, however by time the reversers were deployed i was at 68kts. I had 6 seconds between touchdown and reverse selected to "reverse green". Could someone plz tell me whats wrong? This has only happend since SPc. I never wrote about it because i guess like the others, im hoping that a solution would have come forth before. Please let me know

 

 

 

 

Sorry about the text size

sean

[serviceceiling 135]

The reverse itself indeed needs some time to spool up.

What was your payload? What were you flying, the 800, 900, 700 or even 600?

[sprangerjack 0]

Yes im aware that it needs time to spool up, but not 6-8 seconds for the reverse doors to open

[serviceceiling 135]

Thats true, hold F2 on ground and watch at your throttle in the VC, maybe you'll see some abnormalitys