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PostPosted: Thu Jan 10, 2013 11:37 pm 
retrobike rider
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Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
just found this nice review on the Vertex, and I have to say from experience, I feel pretty similar with my 96 version
Diamond Back WCF VERTEX CARBON FIBER AS IT SHOULD BE

The irony of carbon fiber as a frame material is that its strength can be its downfall. One misplaced or mislaid layer of the phenomenally stiff stuff can make a bike handle like a brick. We know - we've tested a few. Conversely, with a deft hand, a designer can create something that handles like - well, like the Diamond Back WCF.

The WCF is carbon fiber as it should be - light, resilient, shock- absorbing, and with a slight spring at the bottom bracket that enlivens every ride.

The WCF acronym stands for - get this - Welded Carbon Fiber. If you' re like us, you're probably wondering how one applies a torch to carbon fiber without the result looking like the melted witch at the end of The Wizard of Oz. The secret is that Diamond Back's own carbon tubes are bonded to chrome-moly steel inserts, which are then TIC- welded together. (The rear triangle is chrome-moly.) This avoids the sometimes heavy and expensive carbon-fiber tube junctions. Clever, huh? But not easy. According to designer Brent Graves, numerous prototypes were produced and tested before arriving at the correct sleeve length and tube overlap. The challenge was to ensure a thorough, sound weld, yet keep the bonded area from suffering heat damage.

Bicycling completed its rigorous test, including the rock-strewn Cactus Cup race, without fatigue damage (to the bike, anyway). But we'll be interested in seeing how the WCF's unique construction process holds up over time. It results in a of just under 4 pounds, and an excellent complete bike weight of 23.86. No need to put this one on a diet to go racing. Affix the number plate and proceed to the head of the field.

Diamond Back correctly set out to create a frame that was resilient and would shed vibration - the best attributes a plastic bike can have. They succeeded. The WCF frame acted like a high-frequency filter on rock-strewn riders. Arizona singletrack, muting the worst of the noise and allowing you to finish less fatigued than you would on a steel bike. The bike was also a pleasure to ride out of saddle, with a springiness that invites one to sprint out of every apex. Fun. We also approved of the riding position of our 18-inch test bike, with its long, low 22.5-inch top tube and 14-cm stem - just right for this 6-foot rider.

We could hardly fault the component spec either (aside from the inexplicable chain breakage experienced in the race). The Shimano XT/LX drivetrain with Grip Shift SRT 800 X-Ray shifters provided sure shifts. In fact, Arizona's undulating single-track is exactly where the Grip excels, allowing you to maintain a precise cadence with constant, quick cog shifts, even out of saddle. The Avenir Dial-Adjust seatpost offered the easiest fore/aft and seat angle adjustments this tester has ever experienced. We also liked the light, comfortable Ritchey Vector Prolite saddle, and the solid wheel spec (Mavic 230 SBP rims and 32 butted stainless spokes). The supple Tioga Psycho-K 26x1.95-inch tires offered good traction, but desert riding devoured a pair in just a week (due to wear and a sidewall cut).

Complaints? We found the front end somewhat vague during attempts to wrestle it through technical, boulder-strewn single-track due to independent leg movement in the Manitou Comp elastomer suspension fork. An aftermarket fork bridge might help. And while the budget- level fork supplied more than ample compliance (we couldn't have done the race without it), we found it grossly underdamped. We wouldn't have said this a year ago, but I'm afraid we've been forever spoiled by the addition of oil damping to elastomer models such as the Rock Shox Judy and Manitou's own EFC model. Let's hope the feature continues to come down-market. And finally, we noticed the lack of bar-ends, but consider it a reasonable cost-cutting measure that's easily remedied with a trip to the local fat tire trading post. Ditto for the feet belts. Leave some room in the budget for your favorite brand of clipless pedals.

Was the WCF made for the desert? We have to believe so, since our Diamond Back came face-to-face with its real-life counterpoint, coiled and ready to strike [ILLUSTRATION OMITTED], on one pre-race ride. It was about the only obstacle we hesitated to negotiate on this confidence- inspiring rig.

In short, the WCF offers the best of what has made this tester committed to carbon in his personal bike stable. If you're pondering the purchase of a plastic bike, run, don't walk, to your Diamond Back dealer.

Author not available, Carbon mountain bikes.. Vol. 36, Bicycling, 07-01-1995, pp 69(9)
http://www.alicehui.com/bicycling/Buying%20&%20Reviews/Carbon%20mountain%20bikes.htm


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 Post subject:
PostPosted: Thu Jan 10, 2013 11:42 pm 
retrobike rider
retrobike rider

Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
Pyro Tim wrote:
The Vertex is the earlier, and by the pics, looks fatter, but I think that's because it is smaller. I don't believe there is any difference between them other than parts. Not that I've ridden the Vertex, I have studied pictures, as nearly bought one not long ago


Apologies, I must correct myself, having double checked Bikepedia. The Vertex has Tange prestige, the 4.0, and 6.0 have Tange Cromo


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PostPosted: Thu Jan 10, 2013 11:54 pm 
Special Retro Guru
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Joined: Mon Sep 29, 2008 11:34 am
Posts: 5663
Location: Don't mess with monkeys, man
Pyro Tim wrote:
Pyro Tim wrote:
The Vertex is the earlier, and by the pics, looks fatter, but I think that's because it is smaller. I don't believe there is any difference between them other than parts. Not that I've ridden the Vertex, I have studied pictures, as nearly bought one not long ago


Apologies, I must correct myself, having double checked Bikepedia. The Vertex has Tange prestige, the 4.0, and 6.0 have Tange Cromo

I don't have any info for 96, but for 95, I have the brochure in front of me.

In 95 there were four frames using the Vertex name:-

WCF Vertex - pretty self explanatory...
Vertex TA - Easton ProGram Elite
Vertex TR - True Temper TT-Lite
Vertex - 7005 Aluminium butted main frame

The third picture in the OP is consistent (ignoring the fork, headset, and what looks to be the front wheel) with the 95 brochure picture for the WCF Vertex (noting that the brochure top-tube cable routing looks to be an anomaly for that year Vertext and WCF Vertex)


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 Post subject:
PostPosted: Fri Jan 11, 2013 12:17 am 
retrobike rider
retrobike rider

Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
Yeah, they only did the WCF Vertex in 95. I have the WCF 4.0, which they only did in 96, with the 2.0, 6.0, and WCF Pro.

The only thing that would match my WCF with the brochure is the frame though.


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 Post subject:
PostPosted: Fri Jan 11, 2013 1:26 pm 
Dirt Disciple

Joined: Wed Dec 26, 2012 10:14 pm
Posts: 36
Location: Rome-Italy
... and this could the WCF Pro?


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PostPosted: Fri Jan 11, 2013 1:50 pm 
retrobike rider
retrobike rider

Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
not sure, never seen one. Bikepedia says they were in team colours, and this doesn't look like team colours. Also, the Graphics don't match mine.

DB also did some WCF in 97, but none under WCF Pro.


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 Post subject:
PostPosted: Tue Jan 15, 2013 1:29 pm 
Dirt Disciple

Joined: Wed Dec 26, 2012 10:14 pm
Posts: 36
Location: Rome-Italy
the choise was made ...
I bought the WCF Vertex, i will recive it in a couple of days.
When it ... better "she" arrives i will take some shot to post.
I hope you will help me to service her or to fix her up.

thak you for all the useful tips you gave me.
I started with the apex, but all your posts made me fall in love with the Vertex.
Particularly I appreciated what Jango said in his 2009 post "I love the glint of carbon in the sunshine" ...


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 Post subject: Re: Diamond back choice
PostPosted: Tue Feb 19, 2013 2:05 pm 
retrobike rider
retrobike rider

Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
mdonald, where's the pics of your Vertex? ;)


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 Post subject: Re: Diamond back choice
PostPosted: Tue Feb 19, 2013 5:01 pm 
Dirt Disciple

Joined: Wed Dec 26, 2012 10:14 pm
Posts: 36
Location: Rome-Italy
hi, thanks for having remembered my post, I have been busy for work.

here are some pics of the bike, please tell me what you think about.


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WCF21.jpg
WCF21.jpg [ 277.62 KiB | Viewed 124 times ]
WCF1.jpg
WCF1.jpg [ 291.21 KiB | Viewed 124 times ]
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 Post subject: Re: Diamond back choice
PostPosted: Tue Feb 19, 2013 5:59 pm 
retrobike rider
retrobike rider

Joined: Tue Jul 10, 2012 11:58 pm
Posts: 2362
Location: Bournemouth
Looks nice, and being used :D

The forks look as though they may not be working very well. Are they? What are your plans?


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