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Guest Message by DevFuse


long travel subaru

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9 replies to this topic

#1 thejucie



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Posted 25 November 2013 - 02:11 AM

Long travel can be done! I have two different cars going now. One is a outback  other is a impreza both are 2.2 that will be worked. what do you think?

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Edited by thejucie, 25 November 2013 - 02:12 AM.

#2 ryot1


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Posted 25 November 2013 - 02:30 AM


#3 Subaru Scott

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Posted 18 December 2013 - 08:36 PM

Really nice! Good work. Can you post some pix of the suspension?

#4 monstaru


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Posted 19 December 2013 - 12:15 AM

There is all kinds of non termination in your tube work. You need nodes.
I suggest looking at more design aspects before you waste more money, and /or hurt yourself or family.
Just because there is room for more travel does not mean you will get it.
The axles literally stop before you get there. Just in case hadn't thought of that.
You simply will not get more travel than a couple more inches out of this suspension unless it is totally rebuilt. With all different components. Been beat to death on this forum.
And your shocks will break that bolt being single terminated as it is.

Edited by monstaru, 19 December 2013 - 12:18 AM.

#5 Uberoo


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Posted 19 December 2013 - 12:33 AM

I think the correct term is "single shear", and yes you are right it will easily bend.
To the OP:
single shear one upward force with one downward force right at the attachment point. if you mounted another support on the other side it would be far stronger.A pin in double shear is twice as strong as a pin in single shear because it has 1/2 the stress on it. Think about a diving board,now nail the other end down and jump in the middle.

#6 jmoss5723


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Posted 19 December 2013 - 09:09 AM

I don't know what almost anything in this thread means


However, I'd like to get into some minor fabrications, and I would LOVE to hear some elaboration in more layman's terms about what is wrong with this set up. To my ignorant eyes, it looks pretty good.

#7 Uberoo


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Posted 19 December 2013 - 03:02 PM

monstaru was talking about nodes because they are stronger.Lets say you have two pieces of tube that come together in a T.If any force is directed along the tube that makes up the "long" side of the T it will cause the other tube to bend.A bend is weaker than straight tube even perfect mandrel bends.Instead of Ting into a tube it should be placed at a "Node". A node is a place where multiple tubes meet at the ends.I'm using a mobile device so I can't link pics but search google for rollcage design,and you should be able to find pics or diagrams explaning it. As far as single vs double shear goes think of a 2x4 that is bolted to something solid at 1 end while the other end hangs in the air.If you walk on that 2x4 it wont be long before it starts bending downward or breaks.Now if you nail the other down to something supporting it and walk across it, it will bend down about 1/2 as much as it would in the first example.You are putting the same force to it but the load that the board sees is 1/2 what it was before.

if you stand on the first board and weigh 100 lbs there is your force off 100 lbs down,and100 lbs up at the support.-100+100=0
if you stand on the second board there still is 100 lbs but because both supports hold the weight each one only has 1/2 the load. -100+50+50=0

So if somehow you could see inside the board with your weight on it at anyplace along the board the first example has 100 lbs of force in it,while the second board would only have 50lbs.Short of proving it with math and various diagriams just trust me ok.

#8 monstaru


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Posted 23 December 2013 - 11:14 PM

Double up the mounting point on the shocks. And yes, also known as single shear , double shear.
The point of the matter is when mounting something in single shear ]- , as opposed to double shear ]-[ . the - being the bolt. The][ being
the tabs that the bolt goes through.

Now, nodes.

The center of the asterisk is the node. All tubes terminate at the center.
If it carried on through to the last point your good.
Anywhere the nodes touch end up transferring the force of a collision to the other tubes allowing for true transference of the energy. If the tubes are not connected then the energy is not terminated and transfers into the next tube full force and it usually ends in failure.

I don't really know anything .I just build stuff a lot. lol

#9 Uberoo


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Posted 23 December 2013 - 11:41 PM

" the only knowledge consists in knowing that we know nothing"

#10 Olnick


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Posted 23 December 2013 - 11:45 PM

" the only knowledge consists in knowing that we know nothing"


In that case, I am quite knowledgable.

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