Hellenic / Triple Triangle - why?
- Thread starter petitpal
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the smaller rear triangle gives a stiffer rear end, everybody agrees on that.
the can just lower the seat stays, but the make enough space for the rear tire, the would need to bend the seat stay at 90° to connect it at the seat post. other manufacturers have done this.
when they connect the rear stays at the top tube, the can produce it cheaper (not need to bend the rear stay) and they create a nice look.
as said, the small triangle in front of the seat post doesn't add (much) strenght as most forces are distributed to the seat post at the connection at that point.
the can just lower the seat stays, but the make enough space for the rear tire, the would need to bend the seat stay at 90° to connect it at the seat post. other manufacturers have done this.
when they connect the rear stays at the top tube, the can produce it cheaper (not need to bend the rear stay) and they create a nice look.
as said, the small triangle in front of the seat post doesn't add (much) strenght as most forces are distributed to the seat post at the connection at that point.
SeeingisBelievingGTMuseum
Old School Grand Master
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From wiki answers...
The Triangle
The triangle is the strongest geometric shape to as it holds it shape and has a base which is very strong and also has a strong support.
Yes, it is. The triangle is common in all sorts of building supports and trusses. It is strong because the three legs of a triangle define one and only one triangle. If all three sides are made of rigid material, the angles are fixed and cannot get larger or smaller without breaking at the joints, unlike a rectangle, for example, which can turn into a parallelogram and even collapse totally. If you take a rectangle and place one diagonal piece from corner to corner, you can make that strong and stable, too, but doing that makes two triangles!! Think about it! so yes, it is the strongest shape.
Three's gotta be better?
The arc (think: circle (think tube)) is the strongest structural shape, and in nature, the sphere is the strongest 3-d shape.
The reason being is that stress is distributed equally along the arc instead of concentrating at any one point.
Storage silos, storage tanks, diving helmets, space helmets, gas tanks, bubbles, planets, etc. use cylinder or sphere shapes -- or both.
The Triangle
The triangle is the strongest geometric shape to as it holds it shape and has a base which is very strong and also has a strong support.
Yes, it is. The triangle is common in all sorts of building supports and trusses. It is strong because the three legs of a triangle define one and only one triangle. If all three sides are made of rigid material, the angles are fixed and cannot get larger or smaller without breaking at the joints, unlike a rectangle, for example, which can turn into a parallelogram and even collapse totally. If you take a rectangle and place one diagonal piece from corner to corner, you can make that strong and stable, too, but doing that makes two triangles!! Think about it! so yes, it is the strongest shape.
Three's gotta be better?
The arc (think: circle (think tube)) is the strongest structural shape, and in nature, the sphere is the strongest 3-d shape.
The reason being is that stress is distributed equally along the arc instead of concentrating at any one point.
Storage silos, storage tanks, diving helmets, space helmets, gas tanks, bubbles, planets, etc. use cylinder or sphere shapes -- or both.
SeeingisBelievingGTMuseum
Old School Grand Master
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chrisv40":jtr8vkb1 said:
Very true, there were a number of models/sizes that bypassed the seat tube. I also have a NOS 94 Timberline frame that bypasses the seat tube.
pete_mcc":30a91n7p said:
Which takes us nicely back to what pete_mcc was saying earlier and a good reason for the triple triangle. Maybe as things like the Zaskar models were designed to be downhill / XC bikes they went for the extra welds for strength?
