[pheyden]

Attached is an image of a flange that I need machined. 5 pieces.

Overall Dimension 4 x 12.5 inches
Thickness .250 inch
Relieved areas are 0.150 deep.
Hole dimensions +.002/-0.000
6 small holes threaded for 1/4 x 20 thread.

Can provide 3D file.

Please send replies to [email protected]

[keilola]

where are you located? what is this used for?

[functionbikes]

Just emailed you

[GM81]

Is flatness an issue?

[pheyden]

This is part of an airbox assembly and forms the base plate. It will be TIG welded to four individual spigots, and then the top half of the airbox will be made from carbon fibre impregnated nylon. The top will be made with a process called Selective Laser Sintering.

[MrWild]

Performance parts give me a Woody. That is a sweet head set up.

[pheyden]

Mr. Wild,

Here is another photo of the engine compartment. Specifications are as follows:

996cc
Four Keihin carbuertors
Crossflow head
Full dry-sump lubrication
13.8:1 compression
Projected 120+HP @ 9000 RPM (that is 2 HP per cubic inch)



You will also see some of my other fabrication work, header, oil to water heat exchanger, etc.

[tobyaxis]

That is a nice Alibre Model in your first post. Did you do the whole assembly in Alibre??

[pheyden]

Yes, this is basically three sketches. One for the main aluminum surface, extruded to .250 inch. Then an overlay for the area to be machined to a depth of 0.150. Finally another overlay for all of the "through holes".

I must admit that I am still learning.

[LMartin]

Attached is an image of a flange that I need machined. 5 pieces.

Overall Dimension 4 x 12.5 inches
Thickness .250 inch
Relieved areas are 0.150 deep.
Hole dimensions +.002/-0.000
6 small holes threaded for 1/4 x 20 thread.

Can provide 3D file.

Please send replies to [email protected]

Do you want all surfaces machined or are you ok with the extruded finished? Using 1/4 x 4 extruded stock price would be about $20 each because of the low volume. I hope this meet your needs. Shipping 10 to 12 days ARO. Solidwork file or print would be fine or parasolid V14.

[Dualkit]

Do you want all surfaces machined or are you ok with the extruded finished? Using 1/4 x 4 extruded stock price would be about $20 each because of the low volume. I hope this meet your needs. Shipping 10 to 12 days ARO. Solidwork file or print would be fine or parasolid V14.

Looking at the application extruded finish will not work, it will leak, doesn't take a rocket scientist to figure that out.

[pheyden]

This is the base for an airbox mounted on a set of carburetors as shown in the photo in the thread. As this is a naturally aspirated engine, the box does not have to hold pressure. The top of the airbox will have an o-ring groove with a viton o-ring at the mating surface, so I see no reason why the extruded finish would not provide a quite adequate seal with the o-ring. The entire airbox is fed by a 3" diameter duct coming from a NACA duct. If the pressure differential at the NACA duct is sufficient, then the carburetor inlet may experience some slight pressure elevation.

Aside from feeding cooler air to the carburetors, the other reason of the airbox is noise abatement as required by many racing organizations. Having developed very quiet and efficient exhaust systems (even with catalytic converters) it how turns out that inlet noise is the major culprit. At some tracks the requirement is for 89dB or lower. Hence the heriod effort to reduce induction noise yet not hurt induction flow.

[pheyden]

I would like to thank all that responded. The job has been awarded.

Regards,
Paul Vanderheijden
Scuderia Topolino

[LMartin]

Could you let me know if I was higher or lower than the contract price. It help with my quoting.

Thanks for the opportunity to quote for you.

[pheyden]

Just for everyone's sake of competitiveness, if you bid under $25 each you were in the ballpark, and if over then not quite so competitive.

Agains thanks for quoting.

Regards,
Paul

[LMartin]

Thanks