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Bugatti T57/59 engine

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shit that's going to be a large motor!

i had in my head that those parts were the profile of the crankcase and that part housed the crank gear like a standard engine would have a timing gear case on the front of the block

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5 hours ago, BlownCorona said:

shit that's going to be a large motor!

i had in my head that those parts were the profile of the crankcase and that part housed the crank gear like a standard engine would have a timing gear case on the front of the block

Yeah its pretty big.

Banana for scale. 

Cepva6Jl.jpg

Also mm for scale. Its about 1020mm long.

HOb2DYyl.jpg

About 700mm tall

zMgyyOal.jpg

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The mandrel is spaced apart like that so that if we cant form it by hand and need to make hydraulic tooling theres some room to put it behind the rail.

Ideally it would only be 100mm apart. Save some weight!

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32 minutes ago, anglia4 said:

what thickness is the chassis that you have to form over it?

4mm mild steel.

Though they did them out of G350 by accident. So that may or may not suck. Hopefully they can replace them with mildsteel.

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58 minutes ago, Not-a-number said:

4mm mild steel.

Though they did them out of G350 by accident. So that may or may not suck. Hopefully they can replace them with mildsteel.

Whats wrong with using 350 as opposed to 250?

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Its higher tensile material. Nominally 350MPa yield strength as opposed to 250MPa.

To form it over the mandrel you need to be able to "yield" it, so the higher tensile would need more force to bend to yield.

@Not-a-number will you be heating it to form?

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1 hour ago, 00quattro00 said:

Whats wrong with using 350 as opposed to 250?

Nothing, just that it will be harder to do by hand.

 

6 minutes ago, anglia4 said:

Its higher tensile material. Nominally 350MPa yield strength as opposed to 250MPa.

To form it over the mandrel you need to be able to "yield" it, so the higher tensile would need more force to bend to yield.

@Not-a-number will you be heating it to form?

Hopefully not but probably. Ive heard if it was G350 that would  probably crack and distort it. Since it would be locally annealing.

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25 minutes ago, 00quattro00 said:

Is that tomato sauce in the bottle? 

Ketchup* since im in America.

 

*actually ceramic core paste

 

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On 14/10/2020 at 22:36, IvyMike said:

What resin do you use for your castings and at what ratios? The quality looks great.

Techniset 6435 with catalyst 712. Its a 3 Part system.

Part 1 + 2 = 1.8% of sand mass

P3 = 3% of Part 1.

Sand is #90 so quite fine.

3 part system works way better than the 2 part I used in NZ. Mixes really evenly with hardly any effort.

 

 

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