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Pro-Flex suspension woes and hacks.

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Pro-Flex suspension woes and hacks.

Old 12-02-19, 07:09 PM
  #26  
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Lockjaw bottle cages make the bike.

I had a Vector 2 fork on a Giant ATX 890 (polished aluminum) hardtail. Neat bike but I had too many and cut it loose.
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Old 12-03-19, 06:37 PM
  #27  
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Originally Posted by Darth Lefty
dddd I can't square the photo in post 1 where the system appears to have a pivot at the front of the shock, the seatstay strut's pivots keeps everything in a straight line, and there's only compression through the shock, which seems normal, and you could make it work just by turning the aft eye of the shock vertical because it's really just a longer analogue of the Ibis yoke I mentioned... to the one in post 17 where the top of the shock is in a socket and it has to take some bending, which seems terrible. (though considering that's what a telescoping fork does all day, maybe not that terrible, but prevents using a regular shock)
That photo is apparently misleading you, since the shorter-travel Attack model anchors the shock solidly at it's top end, with it's pivot at the bottom of the shock!
This follows their much older designs that had perhaps even less travel than the Attack.
Either approach allows enough pivoting to prevent undue bending loads from feeding into the seal/bushing area in the shock, but this design does still handle loads caused by twisting or lateral flexing of the swingarm, so ProFlex (strut-style) bikes really need a bit larger shaft diameters than most other bikes do. I consulted with Dan White of White Brothers, and at the time in late 1995 he wanted to use my new 1996 model 856 bike to research a new shock design for the bike, which he said would have to have a larger 10mm shaft. He didn't say that my loan would net me a new shock, so I declined to hand the bike over as the racing series was still going on. We rode together and compared his new Y-bike to my 856 on one occasion, but our different skill sets made for difficult conclusions. Both designs pretty much died out long ago!
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Old 12-03-19, 06:49 PM
  #28  
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Originally Posted by cudak888
OMG moment of the year. I'm looking at it, and I still don't believe it.

-Kurt
Just like my current mtb, which consists of wide 27.5" K-Mart (Mongoose) wheels on my WalMart (Huffy).

I paid as much for the new fork ($180) as I did for the Huffy itself!

Current bike=Huffy+Mongoose, with selected upgrades (the 'goose is shown after I had upgraded over half of it's components).



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Old 08-06-20, 07:57 PM
  #29  
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Sun melts them

Originally Posted by Drillium Dude
Whoa, how do those things melt? Is it a function of the urethane breaking down chemically, or is it heat-related?

DD
when there old, all it takes is a couple of minutes in direct sun light to melt them. Its not the heat that melts them, but sun light. fascinating reaction. Like a Vampire when sun light hits them.
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Old 08-06-20, 09:10 PM
  #30  
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Always like me a good necro thread!

Good point about the sunlight dissolving the rubber, happened to a Pro Flex bike left on my porch a few years back!
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