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Title: MeXXspeed NBAC Billet crank Post by: 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=1] [attachment=2] [attachment=3] [attachment=4] just for comparison NBAC vs of the shelf Scat billet crank. Keep on cranking MeXX Title: Re: MeXXspeed NBAC Billet crank Post by: johandryselius on May 16, 2014, 21:31:55 pm Mexx!
VERY nice as also your billet heads! Any new times set yet!? :) Johan Title: Re: MeXXspeed NBAC Billet crank Post by: MeXX 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 ::) ::)
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=1] [attachment=2] [attachment=3] [attachment=4] Title: Re: MeXXspeed NBAC Billet crank Post by: MeXX 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=1] [attachment=2] [attachment=3] [attachment=4] MeXX Title: Re: MeXXspeed NBAC Billet crank Post by: MeXX 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 Title: Re: MeXXspeed NBAC Billet crank Post by: bedjo78 on May 17, 2014, 00:42:31 am That is amazing
Title: Re: MeXXspeed NBAC Billet crank Post by: dangerous 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! ::) (http://i113.photobucket.com/albums/n216/dangerous_05/Billet82.jpg) (http://s113.photobucket.com/user/dangerous_05/media/Billet82.jpg.html) Title: Re: MeXXspeed NBAC Billet crank Post by: wph 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 Title: Re: MeXXspeed NBAC Billet crank Post by: jaqo on May 17, 2014, 11:32:37 am Great work Mexx, as allways
and only 82.5" stroke. Wow:D:DTitle: Re: MeXXspeed NBAC Billet crank Post by: richie on May 17, 2014, 13:07:01 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=1] [attachment=2] [attachment=3] [attachment=4] just for comparison NBAC vs of the shelf Scat billet crank. Keep on cranking MeXX Hi Mexx very nice 8), 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 Title: Re: MeXXspeed NBAC Billet crank Post by: MeXX on May 18, 2014, 07:00:12 am Hi Mexx very nice 8), 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 Title: Re: MeXXspeed NBAC Billet crank Post by: richie on May 18, 2014, 08:41:00 am Hi Mexx very nice 8), 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 8) then go work on the car to make it better ;D 8) cheers Richie Title: Re: MeXXspeed NBAC Billet crank Post by: Ragtop on May 18, 2014, 21:33:41 pm You are a very talented man!
Title: Re: MeXXspeed NBAC Billet crank Post by: 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=1] [attachment=2] MeXX Title: Re: MeXXspeed NBAC Billet crank Post by: mr horsepower 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 Title: Re: MeXXspeed NBAC Billet crank Post by: Shag55 on June 19, 2014, 21:36:39 pm Another very nice product Mexx!
Title: Re: MeXXspeed NBAC Billet crank Post by: Type3s 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=1] [attachment=2] [attachment=3] Daniel Title: Re: MeXXspeed NBAC Billet crank Post by: UltraOrange67-2443 on August 15, 2014, 16:16:06 pm Hi Here are some pix from my bearings. They are available of the shelf in different materials for different levels of performance [attachment=1] [attachment=2] MeXX Hi Mexx, Can you supply a rear thrust bearing in a T4 outer / inner dia? |