[Neanderthal Racing]

Originally Posted by howboutthemapplz

moral of the story = Bruce pwns n00bs.

why, i'm a high school graduate. cherry hill h.s. west. 1970. surely youve heard of it. (isfh)
(i'd offer to show you my diploma but i've never seen it. i didn't bother going to the graduation ceremony)

[Neanderthal Racing]

Originally Posted by Turbineguy

In a Blackhawk I run out of power before I run out of airspeed. VNE is 193kts. In the Huey I run out of airspeed before I run out of power. VNE is 123kts. Thats the difference between a fully articulated rotor system and a hingless teetering rigid rotor system. As a helicopter pilot I must agree with both sides that retreating blade stall is an issue as well as VNE causing supersonic tip speeds. However retreating blade stall is nearly always encountered first. The nice thing is that it's a self correcting issue to a point. It causes the helicopter to pitch up and roll left. This has the effect of reducing your airspeed and the issue then is corrected. Sometimes the onset can be felt with the aircraft porpoising and rolling slightly. The other side of the coin is caused by stoopit or careless pilots who try to exceed placard limits for fun or who don't pay attention to airspeed in a dive. The way this happens without retreating blade stall is like this. When there's pitch applied to the blades the velocity over the top is higher to create lift. However when the pilot is in a dive or other low power setting maneuver the blades are at a flatter pitch delaying the onset of any flow separation over the top due to lower airflow velocity. On alot of helicopters the outer 1/3 of the blade if not the whole thing is a symetrical airfoil so at flat pitch the lift goes to about zero. So when you hit the critical velocity where a shockwave is formed at the tip it's very violent and destructive for an airfoil that wasn't designed for that type of airflow and drag to be placed on it. Now picture this blade going from zero airspeed to supersonic and back again several hundred times a minute. Bad.

if there was a better example of the difference between knowing from reading and knowing first hand, i haven't seen it.

what pistons and rods?

(i skydived out of a blacked out huey with no numbers once (isfh)

[Turbineguy]

Originally Posted by Neanderthal Racing

why, i'm a high school graduate. cherry hill h.s. west. 1970. surely youve heard of it. (isfh)
(i'd offer to show you my diploma but i've never seen it. i didn't bother going to the graduation ceremony)

I didn't go to mine either. They mailed me a photo copy thats still in a sealed yellowing envelope somewhere around here. Apperently the Army doesn't feel I require a degree in anything. It wouldn't do me any good falling out of the sky in flames any how.

[Turbineguy]

Mine has red targets painted on it from every angle.

06 with an 18g running preturbo injected meth and all the usual stuff done short if opening the block and putting down around 370whp and over 400wtq would pistons even with this stuff be just a nice to have and alot of pointless work or something to look at doing? Make me feel better Bruce. (no not like that-think clearly for a minute)

[Neanderthal Racing]

Originally Posted by Turbineguy

Mine has red targets painted on it from every angle.

06 with an 18g running preturbo injected meth and all the usual stuff done short if opening the block and putting down around 370whp and over 400wtq would pistons even with this stuff be just a nice to have and alot of pointless work or something to look at doing?

i would just stay with the stock block until this one quits. it should have a nice long life with a good tune at that power level and there's no point in spending the money now.

Originally Posted by Turbineguy

Make me feel better Bruce. (no not like that-think clearly for a minute)

i hope i just did...no, no, not THAT way.

[Turbineguy]

I do my own tuning and sometimes I feel like I'm a key stroke away from a bunch of paper weights. However so far all is well and the car pulls like a pissed off draft horse. Full spool in third at 2900rpm up to 24psi and holds 20 to redline on my conservative learning noob tuner map. Turbo will push 26-28psi but I feel no need to do that until I work out the other crap a little better. So far the preturbo injection has worked out to be the next best thing since underwear elastic and grenade pins. Shifts the compressor map to the left and basically gives me a 20g for the price of 18g spool.

Whats with the blacked out Huey? Or would you have to kill me? I can keep a secret. The government says so.

[Neanderthal Racing]

Originally Posted by Turbineguy

I do my own tuning and sometimes I feel like I'm a key stroke away from a bunch of paper weights. However so far all is well and the car pulls like a pissed off draft horse. Full spool in third at 2900rpm up to 24psi and holds 20 to redline on my conservative learning noob tuner map. Turbo will push 26-28psi but I feel no need to do that until I work out the other crap a little better. So far the preturbo injection has worked out to be the next best thing since underwear elastic and grenade pins. Shifts the compressor map to the left and basically gives me a 20g for the price of 18g spool.

better you should tune your own motor than me. i trust phil a hell of a lot more than i trust myself.

Originally Posted by Turbineguy

Whats with the blacked out Huey? Or would you have to kill me? I can keep a secret. The government says so.

is it possible to do jack this thread any worse...sure it is.

huge bicentenial celebration...unnamed law enforcement agency of one of the branches of government...lunchtime diversion...blah, blah, blah. too cool for words and if told you any more, someone lese would have to kill you. lol

[Turbineguy]

Originally Posted by Neanderthal Racing

huge bicentenial celebration...unnamed law enforcement agency of one of the branches of government...lunchtime diversion...blah, blah, blah. too cool for words and if told you any more, someone lese would have to kill you. lol

And on that note we now return to our regularly scheduled thread already in progress.

[modaddict]

Originally Posted by rjacobs

Your father in law is an idiot or you mis understood him. A turbo prop is a turbine(jet) engine, it does not have pistons or a block.

FWIW, Bergstrom aircraft calls their cessna 182's a "turboprop". How do I know this? My father fly's it.

No, it's not a jet engine. It's a H6 with a turbo.

Cessna 182 - Wikipedia, the free encyclopedia

Aircraft Information: Cessna 182 Skylane | Airliners.net
The popular, relatively high performance Cessna 182 began life as a tricycle development of the 180.

The first Model 182 appeared in 1956 while the Skylane name was first introduced with the 182A development to denote an optional higher level of equipment. Major changes were introduced with the 182C, including a third window on each side of the cabin and a swept vertical tail. Other improvements introduced over the 182's lifespan included shorter undercarriage, reprofiled cowling, wrap around rear cabin window, progressively higher takeoff weights and improved wing root, fintip, and rudder fairings.

The retractable undercarriage Skylane RG arrived in 1977, giving a significant speed increase. A further performance boost came with the introduction of the turbocharged 175kW (235hp) Lycoming O-540-L engine on the T182RG, which became available from 1979. The AiResearch turbocharger meant that maximum power could be delivered right up to the 182's service ceiling of 20,000ft. A turbocharged fixed gear model was also offered for a time, but only small numbers were built.

The 182 was also produced by Reims in France as the F182, and by DINFIA in Argentina as the A-182. Cessna 182 production initially ceased in 1985.

In 1994 Cessna announced plans to return the 182 to production, following the success of product liability law reforms in the USA. The new 182S prototype first flew on July 15 1996, the first was delivered in April 1997. Improvements include a IO-540-AB1A5 engine, new interior and avionics panel.

[BenW]

well, I gotta say, this is my first foray into the built motor subforum. I've decided to build mine up to withstand a rotated GT30R on pump gas for road course/daily driving duty. Naturally I saw this thread and thought it would be a great place to start.

Maybe I'm not an IWSTI.com professional, but you guys took a pretty decent thread and turned it into a pissing contest about aircraft. Can we get back on track?

[gabedude]

Originally Posted by BenW

well, I gotta say, this is my first foray into the built motor subforum. I've decided to build mine up to withstand a rotated GT30R on pump gas for road course/daily driving duty. Naturally I saw this thread and thought it would be a great place to start.

Maybe I'm not an IWSTI.com professional, but you guys took a pretty decent thread and turned it into a pissing contest about aircraft. Can we get back on track?

Yeah Bobby and I are friends so it was less of a pissing contest than you think.

The only point was that I have seen a trend where the 2.5 motors in stock form are not up to the task of holding the same power upgrades that the 2.0L motors are. To make them strong, you at least need forged pistons. Then the weak point is no longer pistons or rod/main bearings, it is now the cylinder wall. Go ahead, bore those small SS liners out some and put in drop in pistons with a forged rods and the wall is likely to break. Now replace the whole sleeve with ductile iron sleeves and you have a stronger engine.

Thats it. The point was that airplane 4 cycle engines use ductile iron sleeves in their aluminum engines because not only do they attempt to maintain sea level air pressure and volume at altitude with turbochargers, they often go past that threshhold in the older fighter planes. Of course those old planes did not use knock sensors, the pilot monitored cylinder head temps and had a boost controller.

[JT's06sti]

after reading this, i forgot i started it and what it was even about...you guys need to grow up instead of bashing each other over degrees,airplanes and all kinds of "noone cares" ****...

i ended up building my block because i knew i would never be satisfied,i have the mod sickness , i started at a 320whp stocker,360whp 20g(wmeth),then 440whp fp green i was going to get a red, now i went rotated and got a 35r setuplooking for 530-550whp racegas..before long a 40r will be on it with 6-700whp..so yes i figured id do it right...i did pistons,rods,bearings,oilpump,cams,valves,springs, retainers...almost everything...i want it to last rather than be on the fence saying it might hold for xx long..
also yes its a street car and yes i need more than 400WHP...there is alot of cobras and even fast ass evos and a new z06 done up running around locally,heck theres even 11 second hondas here... i love to street race...and i want to beat them..i live 10 minutes from my local dragstrip and really close to 2 big race teams/shops,slowboy and hybrid dynamics and theres 11 second cars like its nothing, most detuning to run the 11.50 or slower to keep running, they only let you go 11.00-11.49 or less 2 times before they boot you without a cage and theres plenty doing it..

[calisti]

I going with Manley Turbo Tuff rods and cp pistons standard 99.5 mm in non-sleeved block, stock forged crank.