Engines > Your Own Design

Halfa, a DOHC inline Twin

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Admiral_dk:

--- Quote ---2) To reduce the size of the throat & throttle vane slightly, from 0.25” to .01875”
--- End quote ---

I'm not sure the I would call a 3/40 reduction a minor one  ;)

But I like you attempt to make it look like a bigger brother  :ThumbsUp:

Per

RReid:

--- Quote ---I'm not sure the I would call a 3/40 reduction a minor one  ;)
--- End quote ---
I don't know how that decimal point got moved...must have been one of the grandkids. :LittleDevil:

(Thanks Per, I've fixed it)

RReid:
After something of a hiatus, I've been able to get back to this engine. I've used my newly made and commissioned Britnell Tube Bender to make up a set of exhaust headers. Tomorrow I'll finish cleaning it up and give it a coat of barbecue paint. Then start working on the intake side.

Kim:
That's some nice fabrication, Ron!  :ThumbsUp: :popcorn:

So, beyond using the Britnell tube bender, how'd you go about cutting the curved tube so it would fit snug against the other one? That's a pretty neat trick!

You're soldering looks really nice too.

Kim

Roger B:
That's neatly done  :praise2:  I know how difficult it is  ::)

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