Jan Ridders Otto 4 stroke build

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dbvandy:

--- Quote from: dbvandy on February 23, 2011, 11:53:15 PM ---left to do...
grind cams... Done
tappet holes and press in bronze bushings... Done
tappets... Done
Intake/exhaust manifold
muffler
flywheel (faceplate just arrived from LMS today)... 75% done
wrist pin in piston
mill slot in base plate for belt
design ignition system (got the tazer yesterday... don't think it will work, does not seem to recharge fast enough... bummer...)... 25% Done
design carb (have some really cool ideas....)

--- End quote ---

Good day today. Cams, tappets, flywheel, and part of the ignition done.

I blacked up the cam blanks and marked them as per the plans.

Then I used the 36x4 belt sander to sand off the extra stock down to the 20mm lip.

This is the finished intake cam. I will need to fine tune the timing once the belt is installed by grinding off more.

I measured the actual distance from the upright to the valve stem. to my complete amazement, it was dead on... go figure... I then transferred those measurements to the cross brace so I could drill the 3/8 hole for the bushing.

The holes were drilled and then the bushings loctited in. I sanded them flat with the belt sander and counter sunk the bushings. The stock for the tappets is 1/4 inch stainless.

I then measured the distance between the cam and the top of the valve stem. Then made 2 tappets.

Here is the finished cams and tappets.

Cams running:

I used the excel pie chart trick to divide the the flywheel into 6 parts for the lightning holes. AND I got to reuse my 1/4 hole in the drill press table as an axle to spin the flywheel on while drilling. I just took a piece of the 8mm shaft and threaded it 1/4-20. Worked well.

Here she sits tonight...

Now off to bed... more to come...

Doug

dsquire:
dbvandy

You have got that baby looking pretty good. It won't be long now and it will be making some noise. :D :D

Cheers :beer:

Don

saw:
Very nice :bugeye:

sorveltaja:
Turns out very nicely :wave:.

Looking forward to see it run.

dbvandy:
Belt an pulleys will be here Monday... still deciding on ignition... should make some fumes next week....

The roughness is bugging me more than anything, I want to start making it pretty!

Thanks for all the kind words.

Doug

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