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Fastest acceleration

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Old 02-17-2013 | 08:24 AM
  #26  
luv2flyrc's Avatar
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Default RE: Fastest acceleration


ORIGINAL: rcjetsaok

Why are there 18 post ( 19 now including me ) in this thread and on the post summary column it says 17 and if you click the 17 (18 now with me ) in the summary column there are 24 (25 now with me ) different people that have posted here???? Some of the 24 listed are not even shown in the thread. IE: Dieselman... He DID post here and it is not even shown....***... Over ????



Danno


The moderator has been here and chopped up the thread.

Mike
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Old 02-17-2013 | 08:29 AM
  #27  
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Default RE: Fastest acceleration


ORIGINAL: LGM Graphix

I think truthfully that with today's engines they are all comparable in acceleration and deceleration. The truth of the matter is, the sppol time from idle to full throttle isn't as big of a factor anymore than one might think simply because in flight we are rarely going back to a full idle. The throttle from 25% to full power has a much faster spool time. With most jets outside of the trainer realm, even landings are carried out at around 25% throttle up until just moments before touchdown. So on a final where you have botched up your approach you will hopefully be either a) flying a jet that will stay airborne at little airspeed or b) flying a jet where you still have power on and the acceleration will be fast anyway.
Picking a turbine based on the ''what if I screw up on final'' is the wrong way to pick one. As I say, the throttle lag or these days, lack of throttle lag, is minimal. Not like the days of 10second spool times. Between the three engines you listed, I have not owned any of them, if I were to consider one, I would base it more on weight, size, and thrust. All those being equal, I would base it on real world experiences of what engine has had the most success (don't get ducked into lifetime warranty promises, it's always better to have an engine that doesn't need warranty than one that promises a lifetime one). If all that is equal, then I would look at price.
The acceleration difference is so subtle now days that it's really become a moot point now. Turbines manufactures used to advertise their spool time, but like I say, it's so minimal and seemingly equal these days, there is no point.
Based on everything I have said, my only real choice between the three engines listed would be the kingtech simply because the size and power are right, I hear very very little bad about the engines, including very few threads about how great customer service is because something failed (to clarify, there aren't that many threads about it because it seems there aren't that many failures) and when service ks needed Barry is excellent to deal with. On top of that, the price is great too!
Just my opinion.
+1 I fly Jetcat, Kingtech, and Evo Jet and spool up time is comparable across all three. Perhaps there is a technical difference, but I can't tell when flying.
Old 02-17-2013 | 08:30 AM
  #28  
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Default RE: Fastest acceleration


ORIGINAL: DiscoWings

Behotec 180 Gold accelerates brutally fast, its faster than a k-170G or a K-180G by 1 second form about 60,000 rpm to 120,000 rpm.
Jet cat 180rx is also very fast.
I'd love to try a Behotec 180 some day. Heard nothing but good things about it.
Old 02-17-2013 | 11:28 AM
  #29  
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Default RE: Fastest acceleration


ORIGINAL: luv2flyrc


ORIGINAL: rcjetsaok

Why are there 18 post ( 19 now including me ) in this thread and on the post summary column it says 17 and if you click the 17 (18 now with me ) in the summary column there are 24 (25 now with me ) different people that have posted here???? Some of the 24 listed are not even shown in the thread. IE: Dieselman... He DID post here and it is not even shown....***... Over ????



Danno


The moderator has been here and chopped up the thread.

Mike
<br type=''_moz'' />
Well if that's the case, the Moderator should advise of removal of post... Dieselman's post was not out of line and was removed with no explanation as well as some others I assume. He has not received an P.M. or e-mail explaining the removal of his post... What's going on here ??? How many other post on other threads do we never see based on the Moderator removing post at will... So it seems to me.



D
Old 02-17-2013 | 12:11 PM
  #30  
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Default RE: Fastest acceleration


ORIGINAL: rcjetsaok


ORIGINAL: luv2flyrc


ORIGINAL: rcjetsaok

Why are there 18 post ( 19 now including me ) in this thread and on the post summary column it says 17 and if you click the 17 (18 now with me ) in the summary column there are 24 (25 now with me ) different people that have posted here???? Some of the 24 listed are not even shown in the thread. IE: Dieselman... He DID post here and it is not even shown....***... Over ????



Danno


The moderator has been here and chopped up the thread.

Mike
<br type=''_moz'' />
Well if that's the case, the Moderator should advise of removal of post... Dieselman's post was not out of line and was removed with no explanation as well as some others I assume. He has not received an P.M. or e-mail explaining the removal of his post... What's going on here ??? How many other post on other threads do we never see based on the Moderator removing post at will... So it seems to me.



D
Must be Obama
Old 02-19-2013 | 09:13 AM
  #31  
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Default RE: Fastest acceleration

"Cycle","Page","Aux","Temp","RPM","Throttle","Pump ",#2013-02-04 17:17:09#
8,133,0,552,33000,290,66
8,133,0,552,34000,290,66
8,133,0,548,34000,1000,70
8,133,0,552,36000,1000,82
8,133,0,572,40000,1000,86
8,133,0,628,49000,1000,90
8,133,0,656,56000,1000,90
8,133,0,668,67000,1000,113
8,133,0,660,83000,1000,164
8,133,0,668,123000,1000,243
8,133,0,680,123000,1000,243

0.5 second per frame
Data from a random K-140G only took 3.5 seconds from idle to full RPM.

Regards,
Barry

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