Turbo Charging

[NU2H2]

I think you may have misunderstood what "B" meant when he said Off Load. Maybe should have been worded more like under load. The turbo will spool up sooner under load than "under loaded" Hence when you tow with a turbo you generally see full boost and full TQ much much sooner than regular driving. generally 1800-2000 under load than 2800-3000 no load. This will be seen when used with a big truck like the H2. I personally would like to see a turbocharged H2 tooling around town blowing the doors of sport trucks might make for a nice change.
Jonathan

[PARAGON]

Along those lines, one could build a turbo that had 5 psi boost at 500 RPM, it just wouldn't be desirable. You would TUNE the turbo system to map out the boost that is best suited for the vehicle AND desires of the owner. This would include the size of the turbo, pitch of blades, how the "overboost" is handled at higher RPM through a controller and wastgate(s).

[PARAGON]

I don't know if I understand very well what I just said.

My point is that the torque converter allows for the engine to reach higher RPMs before it "engages" the transmission. So a higher stall means the engine is turning higher RPMs upon launch and it's those higher engine RPMs that "loads up" the turbo.

[KenP]

Guys, put the vehicle in Cruise Control and head down the highway. As you approach a very moderate hill you will notice the boost gauge go from vacuum to boost without a change in gears and little, if any, change in rpm.

Did I say I love the sound of a turbo spooling up? I had a 5k stall on my Buick. Talk about a crazy sound. (Just thought I 'd throw that in for fun.)

[LasVegas]

Picky picky picky

[HUMMERcustoms.com/TAZ]

I thought I would mention this. I'm working on a SC deal but I'm also working with 2 different turbo co.'s on turbo ideas. Both seem very sharp and We are in the discussion and design stage. If I can not get SC deal then I'm working on the turbo idea. We are working on mapping the turbo to spool up quicker and at lower RPM as I do not want a stall speed converter and I want power sooner than 3000 rpm. Both are looking at how linear they can get turbo power to come on than just at 3000 rpm it kicks in and burns the tires off. I have explained once I get to 3000 rpm with the after market add ons the Girl runs quite well. I'm very disappointed at take off and hard to get her rolling. Spoke with one of the turbo guys this afternoon and he is going to a custom turbo build guy and have discussion. We are also discussng a twin turbo set up with small turbo's and sharp impeller twist to allow for quick low end spool up. We are also looking at twin turbo's where one turbo is designed with more low rpm spool and the second to spool up at say 3000 rpm. A chain reaction type set up where the first does one job and the second does a different job by kicking in at higher rpm. He has a computer program where he loads spec in and gives Him idea of what theoreticlly could be tried. I told Him if I have option of 500 Hp at wheels and 400 ft. pds. torque or 400 Hp and 500 ft. of torque I want the 500 ft. of torque as that will get H2 of line quicker. If I'm wroung here i need to know so please add Your 2 cents worth on this. This is a very serious topic with Me and I know there is a wealth of knowledge here to help Me get in this design what is actually needed.
I hope to have SC or turbo on by end of March or early April.
I would like opinion of heads up race with identical H2's in a 1/4 mile who will win TURBO or Magna Charger?
Everyone please share with me Your experience and knowledge of this topic. It very well may be incorporated into these designs. So serious knowledge and help is required as soon as possible. If I can get something designed then others would be available to try this out once We have used me for test.
Thanks Guys and help Me out here so it does not require to much longer to get this done. If You want Your comments private that is fine PM Me. I would really like everyone inputting on this. If We do something very different and it is not a patented idea I have already decided to do so and would be happy to include anyone that puts in ideas that gets used in this unique design. Seriouly We could have a patent for H2Source that We all benefit from by selling kits etc., we will just reimburse Me for the expense i incured developing it. If You are interested in being involved in a patent type situation if your idea is helpful in R@D PM Me so I can begin a list recorded and the idea You submit on the PM section so it can be saved by You and Me. It will cut down on disputes of who suggested what and at what date and time as it will be recorded by both of us in PM's. We can also display ideas in open forum to spur more ideas and keep open record of who suggested what if We patent. some of You have gotten to know Me better than others. I'm not a selfish person and anytime I can Bless others even in finances I always try to do it. I could keep this quite and do it Myself with the help I have inlisted but I would just like to do something for all You guys and gals that have welcomed Me unjudgementally and with all My quirks like writing novels. I hope to overcome that but the least I could is bring a financial blessing to you and Your family.
Thanks and let's get going on this. bring up in forum and then PPM me so that Your idea is double recorded to prevent disputes.
TAZ

[PARAGON]

I knew what you were saying but for the benefit of someone that comes along and focuses on that one point..... well it was a pre-emptive strike.

[LasVegas]

Not a turbocharging expert but have many hours flying sophisticated tc aircraft & I'll limit this to those generating 100's not 1,000s of hp. Some aircraft are turbocharged just to maintain sea level pressure (29.92 in mercury) at altitude. Others actually boost to 40, 50 or more inches and on top of that bleed off air to pressurize the vessel (cabin) to 5 psi differential or more. Suffice it to say that plenty of boost can be had from a turbocharger. Most aircraft never exceed 3000 rpm at takeoff and more often it's down around 2700 & develops full boost with nearly -0- lag. So rpm is NOT the controling factor. It's all a matter of the size turbocharger & the controller set up to do whatever you want to accomplish. Early tc aircraft actually had manually controlled wastegates with no controller at all. I think turbochargers are more adaptable than roots type chargers and if someone were to design a good one for H2s I'd consider doing it.

Okay, my pet peeve. Cars don't have motors, they have engines. Motors, as in electric motors require external power sources to generate energy. Engines generate energy without external power sources. Sorry, goes back to my school shop days.

[Happy Hummer]

I called Kenne Bell a few weeks ago and they are working on a NEW supercharger for the 2005's. It will be intercooled and have some really good power. They say it will be available in the next few months...

ROB