Some technical help (camshaft)!

Dunks

Dunks

Dunks

Soldato
Joined
31 Oct 2004
Posts
8,691
Location
London
Hey all, might be a bit specific for this forum, but I'm sure there's a few knowledgeable chaps around ;).

And yes, this is sort of homework ;). Done a bit of looking around, and have come to the following conclusion:

2n691js.jpg


Am I right in thinking that the TDC, BDC and stroke, wonderfully annotated on some random drawing I found, correct?

Thanks :p
 
Cool. Just double checking before I embark further on my quest. :p

Basically, I need to produce 3D and 2D drawings of a crankshaft to a certain specification.

Stroke/Bore ratio of 1:1, firing order 1-2-4-3, 5 main bearings and the engine has a 2000cc capacity.

As the Stroke/Bore ratio is 1:1, and displacement = pi/4*bore^2*stroke*4.

I've gotten: 2000=pi/4*bore^2*stroke*4, which gives me a stroke of 86.025mm (and bore), correct? :p. So the distance between TDC and BDC is therefore 86.025mm?
 
God ummn, not exactly my area but I shall give this a bash.

For a kick off that image above is not a fireing order of 1-2-4-3? As 1 and 4 and 2 and 3 fire at the same time :p

Calculation is sound to me too.

Good luck :)
 
Concorde Rules said:
God ummn, not exactly my area but I shall give this a bash.

For a kick off that image above is not a fireing order of 1-2-4-3? As 1 and 4 and 2 and 3 fire at the same time :p

Calculation is sound to me too.

Good luck :)
Click to expand...

Yeah, it probably is 1-2-4-3, it's just a random image :). For 1-2-4-3, I'm assuming it's 2 down, 2 up?. Or vice-versa obviously.

I think. :p
 
Concorde Rules said:
Excellent. Have fun.

Autodesk is better tho :p

Mech Eng student i assume?
Click to expand...

Yeah, second year. :)

Heh, I've got Autodesk Inventor installed on my laptop (free for students, pretty awesome), not really given it a proper try. Seems pretty similar to Solidworks at a first glance though.
 
That image you posted can be for a 1-2-4-3 firing order. All Ford inline 4-s have that firing order and a crank that shape.
 
Jonny69 said:
That image you posted can be for a 1-2-4-3 firing order. All Ford inline 4-s have that firing order and a crank that shape.
Click to expand...

Yeah, I've came across a few images for an OHV Ford Kent engine which shows a crank of the same arangement. Guess either is ok :)
 
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