Landracing Forum
Tech Information => Technical Discussion => Topic started by: p101 on April 27, 2011, 02:53:38 PM
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KNUCKLEHEAD HEAD WELDING QUESTION ?
does anyone know what to use when welding on S&S new flatheadpower knuckleheads.?
The plan is to make 2 carb and barthtup heads
Tom
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Is this the type of setup you are going for? (my first attempt at inserting a photo)
Should be pretty easy to weld on intake spigots.
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Vinsky:
Make the image size around 800 x 532.
Save it to less than 500k.
Click on Additional Options on this page.
Where it says Attach click on Choose File. You can either drag the image there or you can scroll and find where it is stored and
click on CHOOSE.
Click on Post. All done
FREUD
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Freud,
Thanks for the help. Maybe the third time's a charm. So far attempts cause lockup and a shutdown. This time it worked.
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The engine pictured has far more mods than are visible.
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Vinsky,
Not knowing "dick" about Harleys I can see that your engine has some pretty interesting modifications. Did you put a front head on the rear cylinder?? to get the inlets seperated?? What did you do about the push rods??
I had to turn your picture several different ways before I kind of got what you did.
Neat!
Rex
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Let's see, the fat bulge next to the foot is the clutch end of things. The twin usually points the intakes to the middle of the V (just like most of the V engines with more cylinders), so it has two rear cylinders with the stacks pointed forward at an angle.
Does S&S list what alloy?
Should be straight forward, hopefully someone in the group can point you to a shop that's done it a few times.
It also wouldn't hurt to ask S&S, they should know someone and may take an interest.
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Knuckleheads are iron......use brass to weld on a manifold....Brazing....Bronze welding for you Brits.....
worked just fine for us "way back when"................................................................................
PS. Hard to find someone who still knows the fine art of brazing..........Heat control.....Heat control
and more heat control...
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thanks for the reply
I know the "old" flatheadpower heads was carst iron ductil, and i read somewhere S&S use greay iron
for better cooling
maby brazing is better than welding, the intake is not so hot compare to the exhaust.
Tom
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BAK189,
Right on about Heat Control. I've welded on a few of these and always pre-heated "slowly" and cooled "slowly" covered in loose dry sand.
I brazed the intakes and used Ni-rod on the exhaust. Good prep makes for good welds.
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Knuckleheads are iron......use brass to weld on a manifold....Brazing....Bronze welding for you Brits.....
worked just fine for us "way back when"................................................................................
PS. Hard to find someone who still knows the fine art of brazing..........Heat control.....Heat control
and more heat control...
Some custom bicycle builders still braze frames, so might be a source of someone with high quality of work and experience.
I braze better than I weld, but that is not bragging about my brazing skills!
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thanks for the reply
I know the "old" flatheadpower heads was carst iron ductil, and i read somewhere S&S use greay iron
for better cooling
maby brazing is better than welding, the intake is not so hot compare to the exhaust.
Tom
Hey Tom !
If you need brazing done, you may want to get hold of the guy
who originally build my frame.
He can braze, no problem, and he's down near Skanderborg,
just an hour or so from you.
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Sorry about the quality of the pics,
here's one to tempt you Tom, just across the yard from my workshop
(http://i184.photobucket.com/albums/x214/octane98/CIMG6018.jpg)
(http://i184.photobucket.com/albums/x214/octane98/CIMG6019.jpg)
..if you start up your car now you can come get it here in about 3 hours.
.-)
.
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hello
nice pics, thats the look
i will come and check your work shop out :cheers: