Now you are talking about compound supercharging.

 

Another interesting turbo compound example:
http://encyclopedia.thefreedictionar...Napier%20Nomad

 

Yes the Nomad is a very interesting engine. But this site doesn't tell the while story. My post number 357 on page 24 of this thread hints towards this.
If you ever get the chance to read the whole thing it reads like a horror story. Well not quite. But it is full of all sorts of misguided development brought on by burocrats and goverment personel who were still in war mode.

Optmistic developers who fired engineers when things couldn't be done with the current technology. The funding was done in war time when anything that could be proposed got funds.

all in all though the fact that it ran in the end is a tribute to the excelent engineering staff at Napier. They were responsable for a lot of sleeve valve engines that flew a lot of missions. In todays world they would never be accepted as even airworthy.

If they continued development into the 1950's you can't blame them for wanting to eat.
I'm sure some of the development work they did helped future engine development. Espescially when you see some of the documentation of these British firms. These are very interesting documentsfrom several companys. I have seen lots of WWll studies from RR that have given me basic thinking that I carry today.

 

huh? I had the understanding that the "gas turbine" on ships... well military ships were just jet engines without the turbofan. For example the John S. McCain runs I believe a GE turbine that is also used in one of the fighter planes... F-15 or F-16. I'll have to ask my navy friend about that again. Although it can run jet fuel the navy uses diesel simply because it's cheaper.

 

You don't have to. We have our own resident expert on this thread, turbine _pwr.
Are you out there turbine?

 

So whats the news on a streets date or Dyno nu#'s?

 

Some gas turbines are aero derivitives ie. they are derived from a jet engine. They are ideal where weight is a problem but will not be as cheap as an industrial gas turbine that has specifically been designed to give shaft horsepower and not thrust. Gas turbines can run on diesel fuel too. (as can the aero engines)

The difference between a jet engine and a gas turbine is that the gas turbine has a "power turbine" to extract the energy from the gas flow instead of using it as thrust.

 

Better yet, they can run on Remy Martin VSOP or Ronrico 151.

Hopefully I can release some numbers in a couple of weeks. Before I get my head bit off.

 

Sounds good Richard, keep up the good work :D

 

use very fine spirts in a engine. only if life depended on it. keep up the good work.

beers

 

Good to see progress is still being made.

 

^ ?

 

There is no shortcut to perfection. As the tale of the tortoise and the hare points out, slow and steady wins the race. Quality is better than quantity.....

Gomez.

 

The problem is this thread isn't about an axial flow supercharger. I've learned a lot about jet engines (still not sure how an engine that essentially works at a stagnate throttle position and stagnate RPM relates to the daily driven Renesis).

I just wish all the useless posts, umm ... I mean unrelated posts, could be filtered out.

This thread is a random-musing-aeronautical-engine-love-fest and there isn't really any new info. Could we put the ramblings (including this one) in a seperate junk thread in the lounge?

Currently this thread isn't worth reading especially for someone new to it.

-Mr. Wigggles

 

Nobody's forcing anyone to read this thread (or any other thread, for that matter).
If you find it uninformative and/or uninteresting, just quit reading it; problem solved.
Some of us find it both informative and interesting. YMMV.

 

I am not deeply insulted by the lack of relevant information. I am deeply disappointed by it.

And yes I do plan to stop reading this thread. pity...

-Mr. Wigggles

 

Dont kill me but I kinda agree with this guy. After all the thead was opened in May with the words "We are ABOUT to market a new supercharger"

 

Personally, I find this thread interesting and amusing. Better than post after post of - Well guys, you need to wait longer.

I'm not complaining about the wait or trying to pressure RP; if anything this banter keeps me a bit distracted from my FI pipe dreams.

 

Wow 56 pages!!

 

Just as a little bit of reference, so it was opened in May with the words "we are about to make a supercharger". So what? When an auto manuficaturer says "we are about to make a new car", it takes them a couple of years to see a working model. We are talking about 6 months. Would you have more faith in a product that you have seen progress through the design and testing phases and know that it works well on your engine because it was designed specifically for it, or would you rather trust a diffeent type of product that suddenly appeared on the market that you had no clue about that makes claims about power output? People are slow to believe here when it comes to new products but strangely enough they believe intake claims and other things.

Richard actually has the blower stages made for the prototypes. He is just waiting on an outside company to supply new spider gears for the unit. His were fine but by cutting them differently he can make the unit quieter. It is little details like this that make this unit really nice and not some rush job product for the unpatient. He is also contracted out to make pulleys and short throw shifters. The guy stays busy. On top of that, when he dyno tests one of these superchargers on a Renesis, it isn't like he goes down to the shop and puts his car on his own dyno. He doesn't. He doesn't have a engine/chassis dyno or an RX-8/Renesis. His schedule has to coincide with someone that has one and will let him do the testing. To make matters worse, his help in this area is a couple hours drive away from where he is at. Give him a break. That's alot of time to balance and alot of it is dependent on when others can fit him in. He is still finding time to work on these consistently and at a pace that still allows him to not sacrifice quality. Would you rather have him just throw out the model he has now without any more verified testing? I'm sure he could. This isn't a turbocharger. He isn't adapting something that is in the ballpark of your needs. He is designing something from square one that is ONLY for YOUR needs. This particualr unit won't work well on another engine. You should all feel proud.

 

Sic 'em RG.....I tell ya what, you take out the local naysayers, and I'll look after the foreigners..... :D

 

I hope your not having a dig at me again. Please refer to my last but one post in this thread if you are, or PM me if you have the courage... [cluck cluck ... cluck] - (chicken noises)

 

He's saying "foreigners" because I am in the U.S. where most of the people in this thread are, and he is in Australia which is foreign to the U.S. You also just coincidentally happen to be "foreign" in this same regard.

Don't get so pissed off so easily. There's nothing chicken in sarcasm.

 

I can understand some people feel impatient at what they deem to be a lack of progress with regard to Richard's supercharger, but how many times do they have to have it explained to them that some things take time???? Richard said he was having problems with the ECU, the electronics will take a while to sort out, we knew that at the outset.

Some whingers in this thread have followed it since it's inceptions, and have read Richard's explanations as to why he posts so irregularly, yet still they whine about perceived "lack of progress" and "losing faith". If those who are carrying on had any interest in the project, they should realise they are doing themselves a great disservice by badmouthing the guy who is working his butt off to bring his forced induction solution to market. It seems to me these guys hope to be around to post "I told you so" should Richard pull the plug on the whole deal. How about some positive reinforcement if in fact you want this project to succeed?

The same moonunits who complain this thread is too long and that not enough new supercharger stuff is in it, "it's all about jets", should stop posting their ad nauseum bleats about it, as these just add to the post count!! Man, that's just shi##ing in your own nest! I've even defended Richard on another thread in the suggestions forum about the length of this thread.

Tokenbrit, I am not singling you out. This is addressed to all who feel this thread is too long, is off topic, or those who feel there is no light at the end of the tunnel.

Gomez.

 

Grand Slams RG and Gomez. Lots of ppl are defending Richard against the unrealistic ideas of a handful of ppl. I would to thank Richard for doing what he is doing for OUR car. Naysayers go buy an "off the shelf" slapped together unit and the rest of us will wait for Richard to sell us his SC SPECIFICALLY designed for the 8. When we are grinning from ear to ear at the complete satisfaction we feel from a purpose built unit, the Naysayres will be crying.......