What I'd like (Metal crafters, look)

tehbrookzorz · Post by **tehbrookzorz** » September 24th, 2008, 9:29 am

Glad we're on the same page. Now what are you building, wytbishop?

wytbishop · Post by **wytbishop** » September 24th, 2008, 10:17 am

Ryan wrote:
wytbishop wrote:So I'm full on involved into the question of what's going on with the strut bar. These are my thoughts so far...

Because the force due to friction is greater on the outside wheel, the moment about that ball joint is also greater and as a result the stress on the outer shock tower and subsequent deflection is greater. The inside tower does experience a stress, but not as great as the outer wheel so the net result is that the strut bar would be in compresion. [\quote]

Now I completely agree with you
When it comes to pivots, because they are mounted solid to the towers(cannot rotate on any axis), one or two pivots would not change the strength, but I believe three pivot points would cause it to fold, defeating the purpose.

Read what I wrote again. The Strut bar will not be in compression because the inside tower is more stationary than the outer.

This is a quick sketch I did last night. The strut bar is definitely in tension.

wytbishop · Post by **wytbishop** » September 24th, 2008, 10:30 am

tehbrookzorz wrote:Glad we're on the same page. Now what are you building, wytbishop?

I'm not building anything yet. But I will come up with a design in the next few months. Now that it's in my head...there's no getting it out. It's my curse.

fowljesse · Post by **fowljesse** » September 24th, 2008, 12:19 pm

Do you think that astrut bar with bolts that are not tight would work just as well as a solid one?

wytbishop · Post by **wytbishop** » September 24th, 2008, 1:14 pm

I think you're working from the assumption that in order to prevent the deflection of the strut tower you have to have a rigid connection between the bar and the bracket where no rotation is allowed. I don't agree with that. I think that the key ingredients are a solid billet bracket, a good fitting pin and a strong bar.

I am convinced that the bar is going to be in tension during cornering. I am working out in my head how to prove it.

Ryan · Post by **Ryan** » September 24th, 2008, 4:35 pm

I am likewise convinced it is compression... But I don't want to make an arguement about it. Preloaded bars could either be in tension or compression(who does what?). I believe mine is in compression, because as I understand, one is pushing harder in the direction than the other. The one that is pushing harder pushes against the one not pushing so hard. No pulling involved.

wytbishop · Post by **wytbishop** » September 24th, 2008, 4:47 pm

well I don't want to fight about it either...

..but you're wrong.

Meet me at the bikeracks.

Ryan · Post by **Ryan** » September 24th, 2008, 4:49 pm

I can agree to disagree untill someone reaches either of us

fowljesse · Post by **fowljesse** » September 24th, 2008, 8:47 pm

I have an opinion that is an extension of yours, that doesn't necessarily negate what you say, but does contridict, but decided to drop it.
However, I'll be there after the last bell with my throwing stars (just in case).

Ryan · Post by **Ryan** » September 24th, 2008, 9:52 pm

I just washed a hog barn for three hours, and though about this every moment of it.

If it was there soley to transfer TENSION, why wouldn't they manufacture them with cables instead of bars? Would you be confident enough to swap out the bar for a good guage cable? Wouldn't it be more cost effective, and lightweight?

I'm starting to think it does both. I'm also to the point where I'm going to experiment. I want to put a fragile, rigid bar between my towers, and see if it cracks. I could also put a malleable pin in it to see which way it becomes bent

Or a taught string to see if it sags or snaps... get the GF on the camera, take off the hood, and see how it goes

Post by **Mooneggs** » September 25th, 2008, 12:17 pm

lol I think it would be easier to test the rear strut bar...

it seems that there would be more stress on the rear anyways since it is following in a turn... but I'm no expert and I'm leaving now...

(mooneggs runs away quickly slamming the door)

wytbishop · Post by **wytbishop** » September 25th, 2008, 12:45 pm

I'm going to buy a cheap strut bar and put a strain gauge on it and record the data on my laptop. It's the only way to really get it right.

I might be totally wrong. I know enough to know that I don't know everything. But hey...I'm always up for a good experiment.

Edit: I just made a bid on a couple of cheapo EBAY strut bars.

fowljesse · Post by **fowljesse** » September 25th, 2008, 3:30 pm

Please put up findings with the bolts tight, and not so tight!

wytbishop · Post by **wytbishop** » September 25th, 2008, 4:39 pm

I will do a full write up of my findings. It'll be a while before I can get to it though.

Edit...1000th post yeah baby!!

tehbrookzorz · Post by **tehbrookzorz** » October 22nd, 2008, 11:43 pm

1000th post FTW!! (This is mine).

MX-3.com

What I'd like (Metal crafters, look)

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