Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Recommended Posts

holes are seldom good for strength...

t

Toilet paper never tears on the perforation...

So these must be stong! :)

In all honesty, judging a design's strength just by looking at it is... well, inaccurate.

I want a coffee table made with those!

'71 2002 Malaga, fun weekender

'70 2002ti Colorado, Restoration/money pit

'74 2002 turbo in my dreams, sideways...

Link to comment
Share on other sites

I think that would be a great use for them!

 

Oddly, if you look at the third picture, the rods shown use a much stronger design, with pockets, not holes.

 

And yes, every time you see a hole, you CAN see a weak spot.  That gets proven over and over...

 

t

"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

Link to comment
Share on other sites

If you put enough weak spots in it, It won't know where to break.

Edited by allbim

No amount of skill or education will ever replace dumb luck
1971 2002 (much modified rocket),  1987 635CSI (beauty),  

2000 323i,  1996 Silverado Pickup (very useful)

Too many cars.

Link to comment
Share on other sites

Note that the rods in the first picture (with holes) are not the typical I-beam construction; they're the same thickness across.  So I suspect that extra thickness makes up for the holes--although I would think the weight savings would be negligible.  They look cool, though.  

 

mike

'69 Nevada sunroof-Wolfgang-bought new
'73 Sahara sunroof-Ludwig-since '78
'91 Brillantrot 318is sunroof-Georg Friederich 
Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette) & Kermit, the Bugeye Sprite

Link to comment
Share on other sites

So I suspect that extra thickness makes up for the holes

 

Oddly, it doesn't.  The non- round shape probably is better than round, but the standard H- beam (or variations on that theme)

is still the way to go.  Almost all the stress is concentrated in the outer edges, so concentrating material there makes the most sense.

There are some tricks that can be done with CNC- but they 'usually' don't  outweigh the grain advantages of forging...

 

I gots my armchair and my internets, I must be an engineer!

 

hee

 

t

"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

Link to comment
Share on other sites

Pic #3 the holes don't go through the rods..  Pics 1 and 2 they do.   

 

Pic 1's pistons look like JE's that someone then machined the exceses material out of the pin support.  JE's are more of a billet piston than a forged.  They'll find that out when they spin it up. 

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

×
×
  • Create New...