Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

4340 Billet Corvair Crankshafts are here!

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Zenith601-List
View previous topic :: View next topic  
Author Message
Brady



Joined: 26 May 2008
Posts: 182
Location: Poulsbo, WA

PostPosted: Sun Jul 06, 2008 11:41 am    Post subject: 4340 Billet Corvair Crankshafts are here! Reply with quote

Ladies & Gentlemen,
I have just received our first 4340 billet crankshaft!
I am proud to say that the workmanship and the finish are top notch and the dimensions are all perfect.
Our next step is to send a material sample to an independent laboratory for a material analysis. This will confirm the alloy and the quality of the alloy.
Assuming it passes the laboratory tests we will have the strongest Corvair crankshaft available any where!

Here is a picture of the Crankshaft.
Thanks,
Brady


- The Matronics Zenith601-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith601-List



DSC00780.JPG
 Description:
4340 Billet Corvair Crankshaft
 Filesize:  2.49 MB
 Viewed:  677 Time(s)

DSC00780.JPG



_________________
Brady McCormick
Poulsbo, WA
www.magnificentmachine.com
Back to top
View user's profile Send private message Visit poster's website
Ron Lendon



Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI

PostPosted: Sun Jul 06, 2008 4:47 pm    Post subject: Re: 4340 Billet Corvair Crankshafts are here! Reply with quote

Looks good Brady. What radius sizes did you get in the rod and main journals?

- The Matronics Zenith601-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith601-List

_________________
Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
https://sites.google.com/site/corvairenginedata/
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Brady



Joined: 26 May 2008
Posts: 182
Location: Poulsbo, WA

PostPosted: Sun Jul 06, 2008 7:53 pm    Post subject: Re: 4340 Billet Corvair Crankshafts are here! Reply with quote

Ron,
The Radii are .090". This is typical of High performance Crankshafts so I thought it should be good for us. I can increase the radii if necessary but I don't think it will be.

Thanks,
Brady


- The Matronics Zenith601-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith601-List

_________________
Brady McCormick
Poulsbo, WA
www.magnificentmachine.com
Back to top
View user's profile Send private message Visit poster's website
craig(at)craigandjean.com
Guest





PostPosted: Sun Jul 06, 2008 8:40 pm    Post subject: 4340 Billet Corvair Crankshafts are here! Reply with quote

So (by any measure you choose) how much "stronger" do you think your new
cranks are compared to a recently nitride (as opposed to nitride by GM in
the 60's) factory crank. Will you be nitriding yours too? Do you think your
new cranks will still need a fifth bearing?

-- Craig

--


- The Matronics Zenith601-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith601-List
Back to top
Brady



Joined: 26 May 2008
Posts: 182
Location: Poulsbo, WA

PostPosted: Sun Jul 06, 2008 9:25 pm    Post subject: Re: 4340 Billet Corvair Crankshafts are here! Reply with quote

Craig,

These crankshafts are Plasma Nitrided.
And can be Cryogenicly treated as well as an option.
Mine will get cryo-ed.
They are approximately 25% Stronger than a NEW OEM crankshaft that is Nitrided, by conservative estimates.

The necessity of a fifth bearing is a personal decision and application should be taken into consideration.

I am going to fly this crankshaft without a fifth bearing.

Strength is not the only issue.
Fatigue Life is the issue.
All crankshafts have a finite number of cycles until failure.
These crankshafts have 0 cycles on them.
How many cycles does your GM crankshaft have on it?

Brady


- The Matronics Zenith601-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith601-List

_________________
Brady McCormick
Poulsbo, WA
www.magnificentmachine.com
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Zenith601-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group