Demon V8

[stevehuckss396]

Never would have thought of doing them that way. Bravo!

 

[Carbuilder]

That is pretty cool Michael!

How are you going to put the slot in the end of them? I'm at that stage with my rockers (no slot yet) but am on a break to work on other things.

Rick

 

[michael-au]

That is pretty cool Michael!

How are you going to put the slot in the end of them? I'm at that stage with my rockers (no slot yet) but am on a break to work on other things.

Rick

I’m going to make a fixture that will hold hopefully all of them and cut the slots all at once


michael

 

[michael-au]

Never would have thought of doing them that way. Bravo!

Thank’s Steve, I had the idea for a while wasn’t sure how it would work out, but they seem to come out good
was a good exercise in programming the 4th axis

michael

 

[Steamchick]

Just watched the Video.. post#80.
A big "WOW!"
K2

 

[rmalsen]

great work , I have not had time to do any on mine must get back to it

 

[michael-au]

OK, Made a jig to hold the rocker arms so they could be machined to the right length and then mill the slot in the end

Good idea so I thought, but not so in practice, they ended up different lengths and the slots didn't come out right either

This is how I set them up, but it didn't work out

 

[michael-au]

So this is how I should have done them in the first place, in the 4th Axis from start to finish




Just break them off and touch up the end with a file

 

[michael-au]

Got the rockers done, just have to clean them up and them make the rollers to fit them

 

[michael-au]

Posts for the Roller rockers & the rocker nuts are made

 

[michael-au]

Some more rocker parts

 

[michael-au]

Decided to make the sump a slightly different shape to the plans, more for looks than anything else

 

[michael-au]

I found that there was a mistake in the modelling I did in fusion360, for the first two heads I made.
I redid them in fusion and the cam for the mill
Made two new ones they look better

 

[michael-au]

Got some of the bell housing done, still need to drill the mounting holes

I did the inside and out side on my small CNC lathe, first time turning inside on the cnc
Was a bit rough but you can't see in there when its together, the cuts were a bit to aggressive with the boring bar, good learning curve

 

[michael-au]

extractor plates are made from stainless steel
First drilled the mounting hole then screwed it to a piece of aluminium then did the profile

 

[michael-au]

Carby is done except for the needle
The carby body was machined on the 4th axis from round bar stock, all four side were machined and then all the holes drilled
It was then held in the vice with the bottom facing up and the mounting flange was milled and holes drilled, then it was mounted to a piece of square aluminium and the top was milled

 

[Carbuilder]

Very nice work there Michael. I made a few sets of heads before getting all the holes correct and not ruining another set! Thank you for all the pictures, that will help when I'm wondering how to set up for some of the parts.

I have some catching up to do once I get back to it. Since winter is here now I'll be doing more basement work and less garage work, so back to the little V8 engine soon.

Rick

 

[michael-au]

Very nice work there Michael. I made a few sets of heads before getting all the holes correct and not ruining another set! Thank you for all the pictures, that will help when I'm wondering how to set up for some of the parts.

I have some catching up to do once I get back to it. Since winter is here now I'll be doing more basement work and less garage work, so back to the little V8 engine soon.

Rick

Hi Rick
Its a pain having to make more parts then you need because of mistakes but it is also a good learning process
You tend to think more about the order of operations

Will be good to see some more of your work on Demon

 

[michael-au]

Made the Fill and Drain plugs for the sump, these were made from brass
The hex head was done in the 4th axis on the mill

 

[michael-au]

I have been trying to cut the gears on CNC mill required for the V8, never cut gears before
It has been a real learning curve for me, first was to model them in fusion360, then I had to learn how to make a form cutter in fusion360 to use as a gear cutter
Made a few out of aluminium first the had a go at making them is steel, they didn't come out to bad but I might make some more and see if I can improve on them a bit