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Re: My New Fan!!
Posted by: 63turbo ()
Date: October 14, 2018 09:30AM

This last picture shows (kind of) how the crankcase ventilation tube is re-oriented to clear the bell

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: My New Fan!!
Posted by: 63turbo ()
Date: October 14, 2018 08:51PM

Okay- I was hoping that this huge bell was going to push the output way over
the top, based on the low rpm tests that I did with it. Taking care of the
stripped stud and putting the belt tension back to where it should have been,
I had to trust the numbers I got, and unfortunately, it appears that the larger
bell has dropped the pressure numbers somewhat compared to the best tested numbers I posted at the end of the summer.
It is as though there is some sort of sweet spot for the fan, at its current depth- if the intake area is too small, then the pressure numbers are low, if
the area is too large, the same thing happens. This bell has appeared to loose
almost 1" at around 5OOO rpm compared to the first test, but the low rpm numbers are roughly the same as the 2nd test. It seems like if the intake speed
is too slow, the high rpm numbers are going to be most affected, and if the intake is a hair too fast, losses are seen up and down the range.
The large numbers that I was excited about earlier had to do with the tach on my SDS- it can only display numbers in 250 rpm increments, so sometimes the engine is really close to running at 1250, but the SDS is displaying 1000, and
the pressure that I read at what I thought was 1000 rpm was actually borderline
1250, so the pressure was artificially high for 1000 rpm. I checked my work using my laser tach. It also looks like the actual pulley ratio is more like 1.5 or 1.52, not 1.58... my pulley is no different than the stock style in that the O.D. is the same, and the belt sits in the groove at the same depth as a stock style... I just assumed that those dimensions result in a 1.58 pulley ratio, but the laser tach would be reading 1870 to 1900 when the sds
was "displaying" 1250. A fan pulley ratio of between 1.5 and 1.52 is consistent
with those fan rpms and displayed engine rpm of 1250, but 1.58 just is not.
This "probably" screwed up my earlier efficiency calculations, because that was the only instance that I can think of were I had to predict the fan rpm
based on engine rpm, and I had to use the 1.58 fan pulley ratio to do that.
Oh well! looks like I got some work left to do!

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: My New Fan!!
Posted by: County98 ()
Date: October 15, 2018 12:32AM

I'm pretty sure I need this in my life, lol. List me for a kit please!

Very impressive work!

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Re: My New Fan!!
Posted by: dryenko ()
Date: October 15, 2018 05:54AM

I wish there was a way on this forum to "like" posts like this one !!

Bob C aka Dryenko
Dobson, NC 27017

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Re: My New Fan!!
Posted by: dryenko ()
Date: October 15, 2018 05:56AM

Kevin, the pressure delta might also have been affected by minor belt slippage?

Bob C aka Dryenko
Dobson, NC 27017

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Re: My New Fan!!
Posted by: playerpage ()
Date: October 15, 2018 06:45AM

I'd like to get me some of that.

Eric C. Player
Porterville, CA
- National Member, CORSA
- Member: Central Coast CORSA & South Coast CORSA
Former Member: Vintage CORSA Orange County. Member, ISA (Int. Screenwriter's Assn.), SAG Eligible, and Producer's Guild Aspirant


* Then: 1966 Corsa 180 Turbo, Red/1965 Monza 110 Purple/
1967 Monza 140 Red/1966 500 110 Black/1965 Monza 110 Yellow
* Now: 1966 Corsa 180 Turbo Project. Blue, Blue/Beige interior.



"Chevrolet's Corvair was a maverick machine, a rear-engined renegade born out of spite and genius." -- Sports Car Graphic, August 1969

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Re: My New Fan!!
Posted by: Ratt643 ()
Date: October 15, 2018 07:53AM

I would like to be put on the list as well, please!


1964 Monza Coupe

Maryville, TN
U.S. 129 The"Tail Of The Dragon"

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Re: My New Fan!!
Date: October 15, 2018 09:06AM

Lucky Page 7!!
Kevin, List Me, Please!
Fun having an Advanced Modification Guru up here in the Pacific NorthWet.
Hope to see you at the CNW Fall Tune-Up day at Kent Sullivan's Corvair Garage next November 17th!


Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 140 Corsa ~ ~ 1965 Monza 140/4 'Vert Sierra Tan/Fawn ~ 1964 Monza 'Vert (SOLD) ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 Evening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

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Re: My New Fan!!
Posted by: Pacerace ()
Date: October 15, 2018 09:22AM

Please add me to the list as well!

________________________________________________________

Chandler
Powder Springs, GA.



1965 Corvair Monza 110/4sp Coupe



Edited 1 time(s). Last edit at 10/15/2018 09:22AM by Pacerace.

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Re: My New Fan!!
Date: October 15, 2018 10:14AM

If there was any wonder about if a market for this exists, I think you have an answer.

1961 Corvair 700 Sedan - 3sp - Gasoline Heat - Lowered - Rust in Progress


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Re: My New Fan!!
Posted by: 63turbo ()
Date: October 18, 2018 01:09PM

Right on, thanks again for all of the great comments! very much appreciated, both here and the PM's! County98, Ratt643, Pacerace... You are all officially on the list!! By the way, I will be attending the fan belt toss, if any of you
are attending, hunt me down, more happy to chat about the fan!

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: My New Fan!!
Posted by: MattNall ()
Date: October 18, 2018 02:03PM

See ya there!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: My New Fan!!
Posted by: MattNall ()
Date: October 20, 2018 08:11AM

Just for a side note: Singer's new 500 hp 4l Porsche engine







MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: My New Fan!!
Posted by: American Mel ()
Date: October 20, 2018 08:16AM

Those dirty scoundrels! eye popping smiley
They have been following this thread!
winking smiley

.
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater

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Re: My New Fan!!
Posted by: 63turbo ()
Date: October 20, 2018 08:47AM

The combination of backward curved forward leaning blades isn't a new concept... it is talked about in Hughe Mckinnes's book "Turbochargers", and
Mackerle (Tatra Engineer and aircooled GURU EXTREME) received a patent for a backward curved fan with forward leaning blades (early 1980's), although his was a shrouded impeller type (also discussed in Turbochargers). It just goes to show how there really isn't anything new under the sun.

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: My New Fan!!
Posted by: joelsplace ()
Date: October 20, 2018 08:56AM

That fan is being asked to do something completely different. It moves air in a straight line where ours turns it roughly 90 degrees which I would think calls for a totally different design.

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Re: My New Fan!!
Posted by: PGVair ()
Date: October 20, 2018 06:09PM

My understanding is that it doesn't matter about the discharge air direction. A given fan design delivers a certain pressure (usually measured in inches of water) up to a point where it will move no more air. So what matters to the volume of air being moved is the air flow resistance, say across heads or other obstacles, including inlet resistance. Note the Porsche fan has a streamlined center hub which helps to reduce inlet pressure drop. The housing looks like a jet engine housing! Of course the pressure and volume a fan delivers all varies with a particular fan design and speed.

Wade Lanning

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Re: My New Fan!!
Posted by: joelsplace ()
Date: October 20, 2018 06:42PM

I don't believe that is correct. Our fan is centrifugal and the other is axial? (Not sure on the terms) The other fan does look like a jet which also flows the same direction. Ours works like a compressor on a turbo which requires a totally different design.

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Re: My New Fan!!
Posted by: MattNall ()
Date: October 20, 2018 07:07PM

A Bladed fan is mainly for Pressure..

Our Centrifugal fan is for Flow..

Kevin's fan does both.

I was lucky enough to get paid for working on these monsters...

1st Stage was a wheel like Kevin's [ for suction ]

2nd stage was a wheel like ours...

Very efficient but built like a tractor...
Caterpillar 5650 3125kw / 4190 SHP

1st pic is engine setting in Houston warehouse after de-commisiong. 2nd is enclosure they were in... Hot air leaks left their mark on the Door..



Edited 3 time(s). Last edit at 10/20/2018 09:10PM by MattNall.

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Re: My New Fan!!
Posted by: TheRealHip ()
Date: October 28, 2018 07:10AM

Have you thought about using solidworks for your design. You can test everything with it.

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Current Page: 7 of 8


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