The Cal-look Lounge
Welcome, Guest. Please login or register.
Did you miss your activation email?
November 23, 2024, 12:08:46 pm

Login with username, password and session length
Thank you for your support!
Search:     Advanced search
351207 Posts in 28655 Topics by 6854 Members
Latest Member: 74meanmachine
* Home This Year's European Top 20 lists All Time European Top 20 lists Search Login Register
+  The Cal-look Lounge
|-+  Cal-look/High Performance
| |-+  Pure racing
| | |-+  MeXXspeed NBAC Billet crank		 « previous next »
Pages: [1] Print
Author Topic: MeXXspeed NBAC Billet crank  (Read 9348 times)
MeXX
Hero Member
*****
Posts: 526


World record holder 8.733 @ 255.658
« on: May 16, 2014, 21:21:16 pm »
Hi

After I broke my crank last year I had to realize that I'm in the need of a stronger solution.
Now 8 month later I'm more then proud to release my new designed NBAC billet crank.

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]
just for comparison NBAC vs of the shelf Scat billet crank.

Keep on cranking

MeXX
Logged
Drag or Die
johandryselius
Full Member
***
Posts: 132



WWW
« Reply #1 on: May 16, 2014, 21:31:55 pm »
Mexx!
VERY nice as also your billet heads! Any new times set yet!?
Smiley
Johan
Logged
1600cc Challenge Porsche 356:
9,4386@242,48km/h; 6,1229@193,15 km/h 1,50 60 foot @ Kjula Dragway 2022
1600cc Challenge Buggy:
9,5112@225,42 km/h; 6,0624@185,85 km/h 1,38 60 foot @ Kjula Dragway 2020
Europes quickest ProStock VW:
9,8538@218,80 km/h; 6,2569@176,24 km/h 1,35 60 foot @ BRC Tierp Arena 2014
MeXX
Hero Member
*****
Posts: 526


World record holder 8.733 @ 255.658
« Reply #2 on: May 16, 2014, 21:48:48 pm »
Stepping up to larger 65mm main bearing the overlap between main and rod journal was increased from 7.9mm to 10.4.Which is basically even more than a 84mm stroke crank  Roll Eyes Roll Eyes
The main journal radius was increased to 3.2mm. The webs between main journal #3 and rod journal #1 & #4 were increased in thickness from 8.83mm to 9.87mm and in width from 78.15mm to 104.83mm resulting in a square area increase of 50%.

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]
« Last Edit: February 21, 2021, 18:40:01 pm by MeXX » Logged
Drag or Die
MeXX
Hero Member
*****
Posts: 526


World record holder 8.733 @ 255.658
« Reply #3 on: May 16, 2014, 21:58:27 pm »
Even the thick webs were increase slightly to gain rigidness.
The oil bores for the rods were reduced to reinforce the webs and to gain bearing surface.

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

MeXX
Logged
Drag or Die
MeXX
Hero Member
*****
Posts: 526


World record holder 8.733 @ 255.658
« Reply #4 on: May 16, 2014, 22:03:28 pm »
I'm very proud to have two of this beauties for my new engines and that the first crank for a customer is in production right now and will be delivered soon.

So long

MeXX
Logged
Drag or Die
bedjo78
Sr. Member
****
Posts: 253
« Reply #5 on: May 17, 2014, 00:42:31 am »
That is amazing
Logged
dangerous
Sr. Member
****
Posts: 270
« Reply #6 on: May 17, 2014, 03:58:43 am »
Nice design work Mexx!
Love the curves and extra material right where it needs to be!

I went for 4mm radii and 2.75"(about 70mm) mains on mine.
2.2" (about 56mm)rod journals and only 82.5" stroke.

I did mine old school, on non-cnc and it took 90hours!  Roll Eyes
Logged
wph
Jr. Member
**
Posts: 94
« Reply #7 on: May 17, 2014, 07:50:11 am »
Slightly off topic but:

Mexx and dangerous, how did you model counterweights and balancing ? My cousin has a back burner project for his
inline Ford engine for which he'd like to machine a stroker billlet crank.

Pekka
Logged
jaqo
Full Member
***
Posts: 168


Bugster Team
« Reply #8 on: May 17, 2014, 11:32:37 am »
Great work Mexx, as allways

Quote from: dangerous on May 17, 2014, 03:58:43 am
and only 82.5" stroke.
Wow:D:D
Logged
richie
Hero Member
*****
Posts: 5687
« Reply #9 on: May 17, 2014, 13:07:01 pm »
Quote from: MeXX on May 16, 2014, 21:21:16 pm
Hi

After I broke my crank last year I had to realize that I'm in the need of a stronger solution.
Now 8 month later I'm more then proud to release my new designed NBAC billet crank.

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]
just for comparison NBAC vs of the shelf Scat billet crank.

Keep on cranking

MeXX



Hi Mexx

very nice Cool, are you making them yourself or having them made to your specs?  with a 60mm main bearing will they fit into a type 1 case or does it need to be something like Pauter? what bearings will it use? what do you use for the thrust?

cheers Richie
Logged
Cars are supposed to be driven, not just talked about!!!   


Good parts might be expensive but good advice is priceless Wink
MeXX
Hero Member
*****
Posts: 526


World record holder 8.733 @ 255.658
« Reply #10 on: May 18, 2014, 07:00:12 am »
Quote from: richie on May 17, 2014, 13:07:01 pm
Hi Mexx

very nice Cool, are you making them yourself or having them made to your specs?  with a 60mm main bearing will they fit into a type 1 case or does it need to be something like Pauter? what bearings will it use? what do you use for the thrust?

cheers Richie

Dear Richie

They are made to my spec.
65mm bearings are of the shelf.
The fit T1 with a new line bore slightly smaller than T4.
The of the shelf bearings come with a thrust bearing similar to T1.

will ad a pic soon....

sorry but just got up and it was such a long (great) day yesterdays.

WRH

MeXX
« Last Edit: February 21, 2021, 18:41:15 pm by MeXX » Logged
Drag or Die
richie
Hero Member
*****
Posts: 5687
« Reply #11 on: May 18, 2014, 08:41:00 am »
Quote from: MeXX on May 18, 2014, 07:00:12 am
Quote from: richie on May 17, 2014, 13:07:01 pm
Hi Mexx

very nice Cool, are you making them yourself or having them made to your specs?  with a 60mm main bearing will they fit into a type 1 case or does it need to be something like Pauter? what bearings will it use? what do you use for the thrust?

cheers Richie

Dear Richie

They are made to my spec.
60mm bearings are of the shelf.
The fit T1 with a new line bore slightly smaller than T4.
The of the shelf bearings come with a thrust bearing similar to T1.

will ad a pic soon....

sorry but just got up and it was such a long (great) day yesterdays.

WRO

MeXX

Hi Mexx

thankyou, now take a break for 1 hour, enjoy what you achieved yesterday Cool  then go work on the car to make it better Grin Cool

cheers Richie
Logged
Cars are supposed to be driven, not just talked about!!!   


Good parts might be expensive but good advice is priceless Wink
Ragtop
Sr. Member
****
Posts: 385


8.93 at SCC 2012


WWW
« Reply #12 on: May 18, 2014, 21:33:41 pm »
You are a very talented man!
Logged
Turbo Town "Home of the overboost addicts"
MeXX
Hero Member
*****
Posts: 526


World record holder 8.733 @ 255.658
« Reply #13 on: May 22, 2014, 18:36:51 pm »
Hi

Here are some pix from my bearings.
They are available of the shelf in different materials for different levels of performance

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

MeXX
Logged
Drag or Die
mr horsepower
Sr. Member
****
Posts: 463



WWW
« Reply #14 on: May 22, 2014, 19:22:48 pm »
They look like ford small block to me Mex
Maybe  i am wrong but for me they look like it
Btw congrats with youre achievement on the run
You are writing history

Gr henri
Logged
Shag55
Full Member
***
Posts: 220

Shag Leone, SL-1racing
« Reply #15 on: June 19, 2014, 21:36:39 pm »
Another very nice product Mexx!
Logged
325hp and 290# torque @17psi on 91 pump
383hp and 324# torque @23psi on 50/50 mix
Shag55.sl1racing@gmail.com
Facebook at SL 1 racing
Type3s
Newbie
*
Posts: 11
« Reply #16 on: June 20, 2014, 10:25:06 am »
Hi MeXX,

now the good piece lying on my table, awesome!!!!
Thanks for everything, looking forward to the future ....

some pics

[ Attachment: You are not allowed to view attachments ]
[ Attachment: You are not allowed to view attachments ]
[ Attachment: You are not allowed to view attachments ]


Daniel
« Last Edit: June 20, 2014, 10:29:07 am by Type3s » Logged
UltraOrange67-2443
Hero Member
*****
Posts: 1034
« Reply #17 on: August 15, 2014, 16:16:06 pm »
Quote from: MeXX on May 22, 2014, 18:36:51 pm
Hi

Here are some pix from my bearings.
They are available of the shelf in different materials for different levels of performance

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

MeXX

Hi Mexx,
Can you supply a rear thrust bearing in a T4 outer / inner dia?
Logged
1967 1200 2920cc EFI
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!