Bugatti straight 8 cylinder with blower, design, 3D printed molds, castings , machining, assembly

[michelko]

Piston wrist pin
to make piston shafts I use inductively hardened shafts that are available from diameter 3mm (less than 1/8 inch) in inches from 1/4) the advantage is that the core is still soft, the outside is hardened and ground to h6 tol , is round, straight and cylindrical. to protect the cilinder wall i used teflon pads
the axes are used in linear motion technology ( https://www.thn.nl/files/stream/documents/THN-TS06-NL.pdf)
gr

Hi i also used these material for my bugatti piston pins.
You can turn them to length with hard alloy inserts,no need to grind.
Michael

 

[Foketry]

Hi i also used these material for my bugatti piston pins.
You can turn them to length with hard alloy inserts,no need to grind.
Michael

Hi Michael
do you buy it in Holland or is there an online seller in Germany?
Is it possible to drill with normal HSS drills?

 

[leerkracht]

Hello

These inductif hardened rods can be drilled with normal HSS drils ( i prefer HSS Co 5%) for lengtening i prefer grinding
https://www.thn.nl/contact

 

[michelko]

Hi Lules,
as leerkracht mentioned These rods can be drilled with hss. Thea just have an hardened survace aprox 05-1mm thick Maybe less.

Here i ordered mine if i remeber correct. You can get them in many numbers but not smaler than 3 or 4mm i guess.




https://www.ebay.de/i/401496171710?...SSlgshB7P8UujIyeTuKOh0XBPfNeFRC4aAkiJEALw_wcB

 

[michelko]

This is another source for the hardenend and Ground rods.

https://www.maedler.de/product/1643...tahl-werkstoff-cf53-gehaertet-und-geschliffen
I usealy cut them Rough to length with an anglegrinder and then use a Carbide insert for turning to the exact length.

Michael

 

[leerkracht]

look at this site lots of information
https://steelnavigator.ovako.com/piston-rod-predictor/https://steelnavigator.ovako.com/heat-treatment-guide/https://steelnavigator.ovako.com/

 

[Foketry]

This is another source for the hardenend and Ground rods.

https://www.maedler.de/product/1643...tahl-werkstoff-cf53-gehaertet-und-geschliffen
I usealy cut them Rough to length with an anglegrinder and then use a Carbide insert for turning to the exact length.

Michael

Hi Michael
I found the same material from my usual supplier, near my house, I thought it was completely hardened and hard, but instead it is possible to drill in the center with HSS
Thank you for your suggestion

 

[Foketry]

look at this site lots of information
https://steelnavigator.ovako.com/piston-rod-predictor/https://steelnavigator.ovako.com/heat-treatment-guide/https://steelnavigator.ovako.com/

Thank you for your suggestion

 

[Foketry]

Timing gearbox design and construction

Photo of the original engine

 

[Foketry]

Timing gearbox design

The cover with housings for ball bearings

the box with relative housings

 

[Foketry]

Top cover

 

[Foketry]

the plastic molds to be finished and painted with primer and top coat

 

[Foketry]

The mockup for test distance of the gears , each gear is supported by 2 bearings

 

[Foketry]

The 4 castings for timing gearbox

 

[Foketry]

sanded and painted molds

 

[Foketry]

Timing gearbox with gears

 

[Foketry]

assembled timing gearbox

 

[michelko]

This is a cool idea withe the two side ball bearings.
Michael

 

[michelko]

show me yours and i willl show you mine

 

[Foketry]

Camshaft project , there are a double overhead camshaft
The square profile on each cam has the function of facilitating the timing, the hole is for spring pin
The shaft is 8 mm supported by 5 needle bearings