Ageless 9 and 18 Radial

[Bentwings]

Decided to make rocker covers. Added some grooves for curb appeal Three at a time. The grooves are 0.03125 wide and take quite a bit of time to machine due to how fragile the end mills that size are.View attachment 135845View attachment 135846

Very very nice!
Byron

 

[rlo1]

Machining the backside relief that will allow the rocker arm to fully cycle. Doing a three at a time it was easiest just to make a jig to hold the work

 

[rlo1]

Annealing brass tubing for the intake manifolds.

 

[rlo1]

Fabricated the doublers for the intake manifolds that will be folded over later and brazed to the pipe.

 

[rlo1]

Spent a lot of time aligning and clocking the cylinder heads to the cylinders. I am all prepared to start loctiting them together. I need 27 assemblies. And I have 30.

 

[ShopShoe]

OT Follows - Attempt at cheap humor:

Your last photo above shows what appears to be an alien army massing to attack, perhaps Dr. Who is nearby....

--

Actually, congratulations on coming this far. I am following along with the build.

--ShopShoe

 

[Bentwings]

View attachment 136209View attachment 136210View attachment 136211
Annealing brass tubing for the intake manifolds.

if you are going to bend this stuff I suggest you get some low melting point “cero bend metal to fill the tubes it melts just above room temp looks like solder but pours like water . It will kinking to a minimum it’s a bismuth alloy there are several melting point levels you can get mc master Carr has it.
Byron

 

[rlo1]

I picked some of the filler from Micromark. Still figuring out how to use the stuff. Expensive too.

 

[Vietti]

For low temp alloy, Woods Metal, try Rotometals. $9 a pound

John

 

[rlo1]

$15.59 per pound now... If you wanna play, you gotta pay! Thanks for the link. I did order some more so I have plenty.

 

[Vietti]

Their site is hard to navigate. They have various melting temperature alloys, hard to find though.

They have 117, 154, 203, 208 degree metal, the lower the melting temp the higher the price. I think the $9 stuff was 203 degree. Search under low melting point metal.

 

[Bentwings]

I picked some of the filler from Micromark. Still figuring out how to use the stuff. Expensive too.

I forgot to note it’s expensive per volume.
I made a tight fitting aluminum foil plug, then filled the length of tube. I had made a very tight bender using grooved rollers for the bending surfaces. Stainless steel took a lot of force fore small diameter but it worked very well. Just dig the foil out and gently heat with small soldering torch . Drop the cero bend into cold water . Then you can remedy it with hot water or the little torch . Just make the tubes a bit over length . I’m going to make intake and exhaust headers for my steamer . I’ll have to make a new bender. I had an inside radius that formed the actual bend. The outside roller just rolled the tubing around the inside roller . The cero bend forms a solid bar that doesn’t really stretch much. Sometimes it actually cracks if the bend is tight but that doesn’t ent seem to affect the bend. Be sure you get the final part hot enough that no cero bend is stuck to the inside of the tube
Byron

 

[rlo1]

I forgot to note it’s expensive per volume.
I made a tight fitting aluminum foil plug, then filled the length of tube. I had made a very tight bender using grooved rollers for the bending surfaces. Stainless steel took a lot of force fore small diameter but it worked very well. Just dig the foil out and gently heat with small soldering torch . Drop the cero bend into cold water . Then you can remedy it with hot water or the little torch . Just make the tubes a bit over length . I’m going to make intake and exhaust headers for my steamer . I’ll have to make a new bender. I had an inside radius that formed the actual bend. The outside roller just rolled the tubing around the inside roller . The cero bend forms a solid bar that doesn’t really stretch much. Sometimes it actually cracks if the bend is tight but that doesn’t ent seem to affect the bend. Be sure you get the final part hot enough that no cero bend is stuck to the inside of the tube
Byron

Do you end up reusing the bismuth metal? Or is that a one time only use material? In other words do you collect and reuse it after you flow it out of the tube? Thank you

 

[stevehuckss396]

Collect it and reuse it.

If you use a thicker wall tube chances are you won't need to fill the tube. I used 5/16 x 1/4 (1/32 wall) which is double the wall thickness as the k&s telescoping tube and I had no trouble with kinking.

 

[Bentwings]

Do you end up reusing the bismuth metal? Or is that a one time only use material? In other words do you collect and reuse it after you flow it out of the tube? Thnk you

ii am a cheap skate so I collect it and reuse it when needed. Be sure to get it all out so it doesn’t get into solder or braze joints