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Old 03-28-2011, 11:31 AM   #16
supershaft
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I think you are understanding what I am getting at.

My DIY article would be pretty simple. Start with straight tubes and straight trees. Then turn, tighten and re-tighten somemore until it is all straight. Even slightly different torques pull things this way and that. A 2X4 might be faster but I do without that or the block and tackle. It's simple and at the same time complicted in a way if you get it down to minute details. You just have to F with it. Sometimes over and over and suddenly it wil be right.
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Old 03-28-2011, 11:37 AM   #17
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I suppose I didn't need the 2x4 but it was right there and my back was sore!

I understand what you are getting at.

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Old 03-28-2011, 06:13 PM   #18
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If you're into the expense of new triple trees, then go for it! Me, I'll straightne mine if they're slightly out. I believe it's possible lower triple trees have gotten tweaked due to incorrect steering head bearing adjustments, rather than accidents. After a year being tweaked, and baking in the sun on a hot afternoon, it's taken a new set.

But if the tubes are bent, for sure take care of that first!

Excuvator (doing this alignment) found that his new aftermarket aluminum top clamp wasn't machined properly and sent it back.

But the idea is simple - just do what measurements are required to find out if the fork tubes are parallel and both in the same plane.

That's all! Not a big deal really.

But where both Excuvator and I had problems was getting the tubes parallel by blocking (or whatever means) with the idea of the lower tree relaxing into the new 'set'.

Didn't work.

What did, was heating the triple tree with a propane torch (while under tension to be parallel) - and that relaxed it and allowed it to take the proper set.
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Old 03-29-2011, 05:35 AM   #19
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'spokes;

That makes sense to me. When I read complicated DIY's on the internet I generally get overwhelmed in a situation where I could have figured it out myself faster.

Heating was the most logical idea to me! I am going to pull the fork legs sometime tonight hopefully to check for straightness. Aluminum does have cold flow properties but where I am skeptical is "how long does it take to cold flow" as opposed to just bending it. 6months in a twisted configuration isn't in the cards.

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Old 03-29-2011, 09:31 AM   #20
supershaft
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WS, how far off are you talking about?
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Old 03-29-2011, 06:35 PM   #21
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It's been a few years since I've done this so I don't recall just how far off they were.

The dimension that seems to be off and hardest to rectify is parallel. I measured at the lower tree between the two tubes and then at the bottom. They weren't off by much - but the object was to be perfectly parallel and they weren't. I think the difference might have been an eighth or sixteenth of an inch. It wasn't anything to keep the forks from working; just not like they're supposed to.
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Old 03-29-2011, 06:37 PM   #22
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Well, my tubes appear to be straight. Good start. Still need to get a piece of plate glass.
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Old 03-29-2011, 07:21 PM   #23
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Quote:
Originally Posted by Wirespokes View Post
I think the difference might have been an eighth or sixteenth of an inch. It wasn't anything to keep the forks from working; just not like they're supposed to.
You better think about that, and decide if that is what you meant to say. I think you may have misunderstood him?
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