Stephens knuckle head build

[driller1432]

Hello to all I'm currently building Jacks Knuckle Head V twin from the free plans that were generously provided for free. Many thanks to Jack👍🏽Here are some pics of what is done so far crank, rods, cylinders, pistons. Has anyone built this engine? Currently working on heads will post more pics soon.
Steve
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ATTACH]78056[/ATTACH]

 

[jimjam66]

Got the popcorn ready - will be following this build closely!

 

[Gerhardvienna]

Seat in first row preserved, I`ll stay tuned!
I love this old BigTwins, even as a model.
Regards
Gerhard

 

[motorman46]

Hi Steve, very nice work, I too will follow your build closely. I just found the plans and downloaded them yesterday. Jack did a fantastic job on the plans, and it is remarkable that he made them available for free. Please post pics and comments often. I am really excited to start this engine, but am in the middle of another build at present. I am know if I don't finish it first I'll never get back to it.
Julian

 

[driller1432]

Hey guys, almost have the heads completed. I'll get some pictures posted pretty quick. I moved to the heads before the crankcase because the heads seem to be the most challenging components to make. But I got them on first try with out screwing them up what a relief.
Steve

 

[stevehuckss396]

Looking forward to seeing the photos!

 

[Draw-Tech]

Hi Steve
I am so jealous, they look sooooo good.
Here's a link to some of the vids.
https://www.youtube.com/channel/UCdkcsw2IfOWdDSJorrhnq9A
Jack
Draw-tech

 

[driller1432]

Hey guys getting close to completing heads have to make rocker arm shafts and rocker box coversView attachment ImageUploadedByModel Engines1443791617.790443.jpgView attachment ImageUploadedByModel Engines1443791635.824222.jpgView attachment ImageUploadedByModel Engines1443791652.710452.jpgView attachment ImageUploadedByModel Engines1443791670.688797.jpg

 

[Draw-Tech]

Hi Steve
Can't believe the progress you have made, all your work is awesome, I have to do all with lots of handle cranking. If you need any help with the drawings, or find any oops, let me know.
Jack

 

[driller1432]

Finished rocked arm assemblies a couple of more holes for push rods and cut valves to length after lapping deburr and polish final cleaning and heads will be complete. All parts fit together very nice and snug dimensions are right on thanks Jack. View attachment ImageUploadedByModel Engines1444051486.885391.jpgView attachment ImageUploadedByModel Engines1444051512.918730.jpg

 

[Draw-Tech]

Hi Steve
What can I say, let people know the size your dealing with. Put a quarter in the pictures, and we can see how accurate this model is. again GREAT WORK!!!

Jack

 

[Chiptosser]

Very Cool!!

Where did I miss the plan offering?

Always a pleasure to view other people's work.

 

[Draw-Tech]

Very Cool!!

Where did I miss the plan offering?

Always a pleasure to view other people's work.

Hey Chiptosser
You can download the plans on the download page.
Jack
draw-tech

 

[Rozlo]

Oh wow very good work Steve. I just down loaded the plans also but like Jack it will be a lot of handle cranking for me. Good job fit and finish look great.

 

[driller1432]

Thanks guys I too am a manual machinist, late 30s southbend 9 lathe grizzly mill with x power feed and dro. Here are photos of all pieces that were machined for heads 38 pieces per head not counting screws or springs. Assembled valve and springs in heads but springs coil bind with just about 1/16 valve opening so I'll have to take a bit more from floor of rocker box still lots of meat to work with. Then on to crankcase.View attachment ImageUploadedByModel Engines1445482760.496957.jpgView attachment ImageUploadedByModel Engines1445482781.112889.jpgView attachment ImageUploadedByModel Engines1445482802.746413.jpgView attachment ImageUploadedByModel Engines1445482832.179814.jpg

 

[Draw-Tech]

Hi Steve
I can't believe you got so much done, do you ever sleep? Please try to keep track of any adjustments you may need to fix. I started printing the engine in plastic, I will post some more pics soon. Here's one of the cylinder.
Jack

 

[driller1432]

Crankcase done , this engine is looking pretty cool I think I will make some small parts for a while before moving on to the cam box View attachment ImageUploadedByModel Engines1446646133.615873.jpgView attachment ImageUploadedByModel Engines1446646162.431306.jpgView attachment ImageUploadedByModel Engines1446646239.067910.jpg

 

[Draw-Tech]

I'm drooling!!!!

 

[driller1432]

Latest progress on build, cambox and cover complete as well as lifter guide plates next comes the innards bump stick up next.View attachment ImageUploadedByModel Engines1448374130.553007.jpgView attachment ImageUploadedByModel Engines1448374144.871239.jpgView attachment ImageUploadedByModel Engines1448374157.854339.jpgView attachment ImageUploadedByModel Engines1448374175.005296.jpg

 

[Davewild]

Beautiful work, I have to build this!!!!