skydived19006 4 #1 October 14, 2009 I found these pictures interesting. In this country these modifications would require either a Field Approval, or STC. I'm guessing that the external exhaust/muffler is done with STC since I found three airplanes running it. Also, all three with the exhaust are running three blade props, so more than likely an engine upgrade. I don't see what the potential advantage of adding a bar to the strut on a 182. The rear float step in interesting, but again I don't really see the need, and it would require more than a little structure to keep it from ripping off the airplane. The last one is just not smart IMO. Martin Strut Grab Bar Exhaust Exhaust Exhaust Rear Step Rear Step DangleExperience is what you get when you thought you were going to get something else. AC DZ Quote Share this post Link to post Share on other sites
fastphil 0 #2 October 14, 2009 The grab bar blocks the spot we always put someone in on 4-way exits... Quote Share this post Link to post Share on other sites
skydived19006 4 #3 October 14, 2009 QuoteThe grab bar blocks the spot we always put someone in on 4-way exits... Keeps someone from filling "The V". I can't imagine that this is the "why". MartinExperience is what you get when you thought you were going to get something else. AC DZ Quote Share this post Link to post Share on other sites
JohnMitchell 16 #4 October 14, 2009 What's the advantage to the external muffler system? Quote Share this post Link to post Share on other sites
skydived19006 4 #5 October 14, 2009 QuoteWhat's the advantage to the external muffler system? It could be a high flow, low back pressure, tuned header exhaust system? My A&P was talking to me about a new STC (not on the market as yet), I think Power Flow Systems, Inc. Here's what they say about their 172 install: Bolt-on Horsepower. Complete replacement of the Cessna exhaust system. For Use with C172 A-Q. The concept is simple, out with the old, in with the new. By effectively emptying each cylinder, Power Flow is able to give the Cessna 172 Skyhawk a number of benefits. You will immediately notice an increase in RPM (30-130 more) as well as a significant improvement in rate of climb (125-300fpm). Want to save fuel? You can use less throttle to go the same speeds and save up to 2.2 gallons per hour. The Power Flow is a versatile, quality constructed, complete replacement of your entire exhaust system. You are in control. For more power, use the extra RPM. For fuel savings, throttle back and fly your pre Power Flow airspeeds. The entire system is constructed from stainless steel and includes minimal structural welds in the cabin heat section for improved safety. All necessary parts are included for easy installation. Our Cessna 172 Skyhawk customers report an average install time of between 3-5 hours. The system can be installed by one of our dealers, by your local A&P, or you can fly your plane to us for a local install. Fly in with a standard Cessna 172 Skyhawk, fly out tuned for performance. Each exhaust system includes an unconditional 60 day (from time of installation) money back guarantee. If you are not totally satisfied, for any reason, you can return the system for a full refund of your purchase price (Refer to Shipping/Return policy for details). http://www.powerflowsystems.com/products.php?cat_id=9&pid=6 I think that the 172 system runs around $5,000. One of my pilots put a Power Flow exhaust system on his Piper 140 and swears it lived up to all the advertised numbers. I'll seriously consider it for my 182. Don't know if there will be an issue with combining the Power Flow with the Texas Skyways O-520 U/TS STC. All that said, I don't know anything about the system in the pictures. Martin Edit for spelling, etc.Experience is what you get when you thought you were going to get something else. AC DZ Quote Share this post Link to post Share on other sites
kallend 2,146 #6 October 14, 2009 QuoteI found these pictures interesting. In this country these modifications would require either a Field Approval, or STC. I'm guessing that the external exhaust/muffler is done with STC since I found three airplanes running it. Also, all three with the exhaust are running three blade props, so more than likely an engine upgrade. I don't see what the potential advantage of adding a bar to the strut on a 182. The rear float step in interesting, but again I don't really see the need, and it would require more than a little structure to keep it from ripping off the airplane. The last one is just not smart IMO. Martin Strut Grab Bar Exhaust Exhaust Exhaust Rear Step Rear Step Dangle Since the exhausts are all European registered, I venture a guess that they are done to meet Europe's much more stringent noise regulations.... The only sure way to survive a canopy collision is not to have one. Quote Share this post Link to post Share on other sites
kallend 2,146 #7 October 14, 2009 QuoteQuoteWhat's the advantage to the external muffler system? It could be a high flow, low back pressure, tuned header exhaust system? My A&P was talking to me about a new STC (not on the market as yet), I think Power Flow Systems, Inc. I bet NOISE, since they are all in Europe. I have the PFS system on my Mooney - it certainly does increase power but it is also noisier.... The only sure way to survive a canopy collision is not to have one. Quote Share this post Link to post Share on other sites
chutem 0 #8 October 14, 2009 Agree on the exhaust being to reduce noise since all three have three blade props also. James Quote Share this post Link to post Share on other sites
skydived19006 4 #9 October 14, 2009 Quote Since the exhausts are all European registered, I venture a guess that they are done to meet Europe's much more stringent noise regulations. It could be about noise, the standard muffler isn't much of a muffler. Again, the majority of the noise is from the propeller especially at climb RPM. If it's a generic regulation for all piston aircraft, the fact that the propeller is noisy for a hard climb would not have been considered. I wonder if they go so far as to consider the tip speed of the propeller? With three blades you can go shorter propeller, and lower tip speed, so less noise. I have a three blade propeller on my 182, but it's the same diameter as the one it replaced. For break in we flew it around at 2600 rpms for a while, I liked the sound but the propeller was generating one hell of a lot of noise!Experience is what you get when you thought you were going to get something else. AC DZ Quote Share this post Link to post Share on other sites
skydived19006 4 #10 October 14, 2009 QuoteAgree on the exhaust being to reduce noise since all three have three blade props also. James Here's what someone in the Cessna Pilots Association form said: Martin, I think you're correct about the noise. There is a German company that makes an STC'd "silent" exhaust system for those who want to go unnoticed. Maybe the three blade propellers are also about noise as opposed to high power output engines? Now, what about the silly handle bar mounted on the strut, and the "rear float steps." You know what I hate about the German? They have a different word for everything!!Experience is what you get when you thought you were going to get something else. AC DZ Quote Share this post Link to post Share on other sites
pms07 3 #11 October 15, 2009 You will find that aviation rules are much different in Europe. No flying or restricted hours on Sunday, as an example, at a couple of places I jumped at. The muffler deal is pretty common also from what I saw when I lived in Germany. Both are about noise restriction. Quote Share this post Link to post Share on other sites
SansSuit 1 #12 October 15, 2009 QuoteThe last one is just not smart IMO. Reminds me of the glider at the last WFFC. The Sweitzer takes off with BOTH of the jumper's legs dangling out the side of the cockpit.Peace, -Dawson. http://www.SansSuit.com The Society for the Advancement of Naked Skydiving Quote Share this post Link to post Share on other sites
jimmytavino 16 #13 October 15, 2009 the rear floater step sure looks like a foot could get hung up in it...seems to be more of a bar, than a step.... Is that some type of handle??? up near the flap??? not sure i like that,,, from the point of interfering with the container of anyone exiting from the step.... " if it ain't broke??? why "fix " it ??" jmy Quote Share this post Link to post Share on other sites
neandertal 0 #14 October 15, 2009 the rear step and the handle located below to the right hand flap are designed for the CM, AFF/I or 4 way team. They have the rear step built in one small step like on Twin Other as well. That big one is perfect for an AFF instructor and a CM positioning themselves out and leave most of the above the wheel step for the student. Both aircraft are located in Brazil where this system has been in use since late 80's without any problem. No Drogue, no JUMP!! Quote Share this post Link to post Share on other sites
Andy9o8 2 #15 October 15, 2009 Quote The last one is just not smart IMO. Dangle That's the Flintstone brake. Quote Share this post Link to post Share on other sites
jumpwally 0 #16 October 15, 2009 Believe it or not, i knew a jump master who after dropping the students, would climb out on the step in student position at about 1000 ft and stay there all the way thru landing and rollout to in front of the hanger........wild just wild, scared me just looking at them. smile, be nice, enjoy life FB # - 1083 Quote Share this post Link to post Share on other sites
DBCOOPER 5 #17 October 16, 2009 Since the exhausts are all European registered, I venture a guess that they are done to meet Europe's much more stringent noise regulations. Don't you ever get tired of being wrong? Its for students that get cold feet....Replying to: Re: Stall On Jump Run Emergency Procedure? by billvon If the plane is unrecoverable then exiting is a very very good idea. Quote Share this post Link to post Share on other sites