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Re: Nashfan (billet version) group purchase info
Posted by: Kyle_in_Mich ()
Date: February 10, 2019 07:48AM

I happy to see this moving forward. I very much want to purchase one, but the purse strings can only open so wide right now.

When production comes, expect to take some of my money.

CORSA Member
Traverse City,MI
Daily driver- Bicycle
Fun driver/project- 65 Corsa 140/4 speed

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Re: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 10, 2019 08:48AM

Kyle_in_Mich Wrote:
-------------------------------------------------------
> I happy to see this moving forward. I very much
> want to purchase one, but the purse strings can
> only open so wide right now.
>
> When production comes, expect to take some of my
> money.

I understand the affordability issue! it was incredibly painful for
my pocket just to get to the stage it is at now!

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

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: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 10, 2019 09:24AM

jjohnsonjo Wrote:
-------------------------------------------------------
> Hi Kevin, I have been following this since the
> beginning. You have put a ton of thought and work
> into the project. Was this done with a CNC or
> standard machining? Have you ever considered using
> a lost wax or investment casting to reproduce the
> prototype. It should produce an exact replacement
> for less money. If its already stored in a CNC
> they may not be the case.
>
> Thanks J.O.

My 2 test mules were run on a CNC. The job was supposed to have been done on a 5 axis machine but for a variety of reasons it ended up being
done with less than that, and that is one reason why my test mules ended up a bit heavier and showing distinctive tooling marks. Because the test mules are not exact copy's of my CAD model they are not good candidates for physical copies, even if lost wax or investment casting was a viable option, and they really aren't. The problem is the combination of the thin walls and the exacting balance requirements. Every place I've talked to that specializes in these lower volume casting techniques has balked on even giving a bid... they basically wont touch it with a ten foot pole! One guy in the business described it as a "nightmare" trying to balance my fan if it was investment cast... they have to put it in the "spin pit" as he called it, and take it up to 11000 rpm. If it is not dead nuts in every possible way it is going to explode, and even if it does not explode there's a chance they just damaged it from the testing, so now they have to inspect it for that. He was the one that told me I was better off either machining it or having a true hard, high pressure mold made for it, and those things aren't cheap or quick to make. I hope this will make it clear how hard it is to really do a good quality, safe fan, and why these machined fans really are the most viable method right now for a small run.

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

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






Edited 1 time(s). Last edit at 02/10/2019 04:59PM by MattNall.

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Re: Nashfan (billet version) group purchase info
Posted by: jjohnsonjo ()
Date: February 10, 2019 10:26AM

Thanks for the explanation Kevin. Figured you may have looked into that. We live in a world of liability. I'm still considering it, but for me its more the PITA of changing the fan on a turbo than the $$$. I did manage to slide it out once with the turbo in place, but it probably would have been better to pull everything. Not racing at all anymore, but I like the cool factor. Getting to the age where wrenching isn't the fun it used to be. During my last rebuild, I really went ANAL with the de-flashing. All holes are smoothed and slightly larger than stock. After reading your tests about the heat buildup from the high static pressure in a Vair cooling system, I'm even more glad I did took the time.

J.O.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 11, 2019 11:21AM

jjohnsonjo Wrote:
-------------------------------------------------------
> Thanks for the explanation Kevin. Figured you may
> have looked into that. We live in a world of
> liability. I'm still considering it, but for me
> its more the PITA of changing the fan on a turbo
> than the $$$.

I understand! the fan doesn't come out so easy on a Turbo!
if you decide to do this, maybe you can get a gang together
to come over and help pop the turbo and exhaust off!smiling smiley



I did manage to slide it out once
> with the turbo in place, but it probably would
> have been better to pull everything. Not racing at
> all anymore, but I like the cool factor. Getting
> to the age where wrenching isn't the fun it used
> to be. During my last rebuild, I really went ANAL
> with the de-flashing. All holes are smoothed and
> slightly larger than stock. After reading your
> tests about the heat buildup from the high static
> pressure in a Vair cooling system, I'm even more
> glad I did took the time.
>
> J.O.

The heat build up isn't so much caused by the high resistance of the stock system as it is the inefficient blade shape... the fan is literally beating the air and heating it. An efficient fan MUCH reduces this heating.. I agree
with you though, it is always a good thing to deflash the heads as best one
can, as well as plug/seal up the numerous minor leak points in the shroud, tighen the fan to shroud clearance, engine to body seals installed properly and
working, dealing with the intake flow losses and perhaps do something with the restrictive lower shrouds (if conditions and use warrant it)… all those tricks
work way better with my fan than stock because it doesn't necessarily cause the hp usage to go up. With the stock fan, ANYTHING that is done to increase the flow causes the already exorbitant hp usage to go up even more! for my fan, theres a point where "upping the flow" causes the hp usage to go down.

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

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: Nashfan (billet version) group purchase info
Posted by: corventure Dave ()
Date: February 13, 2019 09:31AM

Kevin,
Definitely a fantastic project. Congrats!thumbs up

Corventure Dave

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Re: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 13, 2019 11:17AM

corventure Dave Wrote:
-------------------------------------------------------
> Kevin,
> Definitely a fantastic project. Congrats!thumbs up
>
> Corventure Dave

Thanks Dave!!!smileys with beersmileys with beer

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

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: Nashfan (billet version) group purchase info
Posted by: Darrin ()
Date: February 14, 2019 05:00AM

Hi Kevin,

Just sent the email. I am in for one fan, pulley and bell.

Thank you for making this happen.

Fun!

Darrin

Darrin Hartzler
Bethesda, MD/Catlett, VA

Northern Virginia Corvairs & Group Corvair

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Re: Nashfan (billet version) group purchase info
Posted by: roger65180 ()
Date: February 15, 2019 06:01AM

high Kevin I sent my email this week my computer wont copy /paste witch makes me parranoid . I run a high boost turbo and cooling is one of the most important issues If I did not send all the required info PM me Thanks Roger R

Roger R
Madison Wi
62 ct pg turbo
65intercooled 180 4sp,autocrosser
62 Rampy

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Re: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 15, 2019 07:12AM

Roger R pm sent!

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

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: Nashfan (billet version) group purchase info
Posted by: jjohnsonjo ()
Date: February 15, 2019 07:30AM

Hi Kevin, still on the fence. Did you do any decibel testing between, the stock fan and yours? If its in there I missed it! Anyway, I drive with the top down most of the time and the fan noise gets pretty busy when cruising above 3500 RPM.

I have used Rotron Centrimax high pressure blowers in my Solar powered greenhouse for about 40 years.

[www.ebay.com]

Somewhat similar blade design, but the do make a little more noise than a standard squirrel cage.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 15, 2019 08:04PM

J.O. I haven't actually measured the fan noise for the stock fan or my fan, however, my ears have been telling me there's no difference in noise level.
It does have a different sound to it though... a bit more whirring type of sound. I kind of like how it sounds!!

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

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: Nashfan (billet version) group purchase info
Posted by: jjohnsonjo ()
Date: February 16, 2019 06:51AM

Thanks Kevin, if its anything over 7K I couldn't hear it anyway. That's about where my ears shut down.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: Nashfan (billet version) group purchase info
Posted by: TedBrown ()
Date: February 16, 2019 07:25AM

Excellent work Kevin... thanks for your time and effort to take the Corvair to the next level.

Ted
www.corvair-efi.com

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Re: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 16, 2019 11:57AM

Thank you so much Ted- it really means a lot coming from a guy like you that has been there and done it with a huge undertaking with Corvair next level development!!smileys with beer
My extra special thanks to all the great comments and excitement from everyone that has posted, seen and "heard" all about the Nashfan!!! and also,
to Ray Sedman, especially, as without his considerable involvement and help, there's not one snowballs chance in hell that my project would have ever gotten off the ground.smileys with beersmileys with beer
Lastly everybody should give the early adopters a serious, deafening, loud round of applause, because these are the folks that are going in early and will be the ones that make this project a success, simply by trying and enjoying their fan, pushing it in ways that I cant possibly do and seeing whats really possible!!!

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

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: Nashfan (billet version) group purchase info
Posted by: Oldschool327 ()
Date: February 21, 2019 03:04AM

Kevin, how we looking on the order?

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Re: Nashfan (billet version) group purchase info
Posted by: 63turbo ()
Date: February 21, 2019 08:04AM

Oldschool327 Wrote:
-------------------------------------------------------
> Kevin, how we looking on the order?

PM SENT!!!!smileys with beer

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

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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