Engine damage from running 100% too long...

[Karnak]

The only thing I want to know is why RAF Merlins take 50% longer to cool down than USAAF Merlins in AH....

[Volron]

Hey colmbo, if you were to run your B-24's engines at the 100% we are allowed for an entire flight, till you need to land due to fuel, what would the result be?  Could you do the entire flight?

[Soulyss]

My understanding with the "historical" limited to maximum engine use that is often quoted in the manuals was for the ongoing wear and tear from the engine from hours upon hours of use spanning multiplie missions.  The engines got regular service but they weren't completely stripped down and replaced after each flight.

In AH a sortie lasts what... 20 minutes? and hour at most?  Then we land, or get shot down and voila new plane with a factory fresh engine with 0 running hours on it.

[Wiley]

My understanding with the "historical" limited to maximum engine use that is often quoted in the manuals was for the ongoing wear and tear from the engine from hours upon hours of use spanning multiplie missions.  The engines got regular service but they weren't completely stripped down and replaced after each flight.

In AH a sortie lasts what... 20 minutes? and hour at most?  Then we land, or get shot down and voila new plane with a factory fresh engine with 0 running hours on it.

Off the cuff, it seems to me similar to the difference between the POH's VNE versus the actual speed where if you exceed it, stuff starts falling off the plane.

Wiley.

[bustr]

The only thing I want to know is why RAF Merlins take 50% longer to cool down than USAAF Merlins in AH....

This document might help.

http://www.missbardahl.com/engine/hist/rr_merlin_dev.pdf

[Karnak]

This document might help.

http://www.missbardahl.com/engine/hist/rr_merlin_dev.pdf

Nope.  Doesn't explain it at all.  The Spitfire Mk XVI and Lancaster Mk III both have Packard built Merlins, yet cooldown the same speed as all other RAF Merlins, 3 seconds of cooling for 1 second of WEP, while the USAAF Merlin powered aircraft all have 2 seconds of cooling for 1 second of WEP.

[bustr]

Seems my crystal ball that looks into Hitech's head is at the cleaners, and they keep telling me some strange man keeps sneeking in and spray painting it every time they finish cleaning it.....

I've been warned it may never work again.....

[FLS]

Nice to see Krusty back.