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Fulcrum 5 wheels

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Fulcrum 5 wheels

Old 08-19-10, 05:57 PM
  #1  
armybikerider
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Fulcrum 5 wheels

Anybody having trouble with spokes breaking in Fulcrum Racing 5 wheels?

Thanks,

David
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Old 08-19-10, 06:12 PM
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Do you have the 2010 model with 28 spokes on the rear? Maybe that is the reason they went to a higher spoke count.
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Old 08-19-10, 08:23 PM
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No problems with my pair... (my rear is slightly out of true)

Where are they breaking?

What,s your size and riding style?
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Old 08-19-10, 08:27 PM
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Got over 10,000 miles on mine and no problems at all. Im not exactly light either at 190lbs.
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Old 08-19-10, 08:34 PM
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got about 5k trouble free miles on mine.
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Old 08-19-10, 09:03 PM
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13 months, 4K miles, no problem at all.
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Old 08-19-10, 09:33 PM
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Maybe is because the wheelset is not army strong certified.
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Old 08-19-10, 09:51 PM
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They are the 2009 models with a 24 spoke rear.

Actually the same spoke broke both times (LBS repair problem?). The original broken spoke was replaced with a round double butted spoke and it broke the second time also. Curiously though the first time it broke right at the threads at the rim....and the second time it broke right at the hub. The wheel is at the shop now, but I think it was about 5 spokes away from the valve hole.

I'm 155 pounds on a heavy day. Don't slam potholes....ride chipseal and smooth pavement...mostly 50 - 60 mile rides on the weekends with 10 - 20 mile rides after work during the week. I think I'm a spinner, usually around 85 + cadence, but I tend to stand out fo the saddle on hills and rollers. The first spoke broke when I was standing on a short 10% grade climb, the second when I was standing cresting a fast roller.

The wheel has 4,375 miles since I got it with my Lynskey R330 in late October last year - a little more than 9 months ago.

The local LBS recommended rebuilding with all new spokes. I opted to replace just the broken spoke again, retension all spokes, true and then ride it like I stole it and see what happens.

Thanks,

David
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Old 08-20-10, 01:35 PM
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Originally Posted by lpolliard View Post
Do you have the 2010 model with 28 spokes on the rear? Maybe that is the reason they went to a higher spoke count.
Photos on the website show 24 in the rear and 20 in the front. Only change for 2010 is a slightly deeper interior rim depth. I actually think the numbers are a misprint, since both the current catalog and spec sheet still show 24.
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Old 08-20-10, 01:46 PM
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maybe 7-8k miles of training and racing, i weigh 150lbs, still just as true as they were out the box. well impressed with them, so no, no problems here
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Old 08-20-10, 03:25 PM
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Originally Posted by armybikerider View Post
They are the 2009 models with a 24 spoke rear.

Actually the same spoke broke both times (LBS repair problem?). The original broken spoke was replaced with a round double butted spoke and it broke the second time also. Curiously though the first time it broke right at the threads at the rim....and the second time it broke right at the hub. The wheel is at the shop now, but I think it was about 5 spokes away from the valve hole.

I'm 155 pounds on a heavy day. Don't slam potholes....ride chipseal and smooth pavement...mostly 50 - 60 mile rides on the weekends with 10 - 20 mile rides after work during the week. I think I'm a spinner, usually around 85 + cadence, but I tend to stand out fo the saddle on hills and rollers. The first spoke broke when I was standing on a short 10% grade climb, the second when I was standing cresting a fast roller.

The wheel has 4,375 miles since I got it with my Lynskey R330 in late October last year - a little more than 9 months ago.

The local LBS recommended rebuilding with all new spokes. I opted to replace just the broken spoke again, retension all spokes, true and then ride it like I stole it and see what happens.

Thanks,

David
Assumption: non-drive side

I think the LBS didn't use a high enough quality spoke.

I'm not sure I'd let them rebuild it without them telling you what spoke the propose to use. I understand these high tension wheels need a higher spec spoke. Have you attempted to get any input from Fulcrum customer service?
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Old 08-21-10, 10:44 AM
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Yes....non drive side.

I've not contacted Fulcrum customer support....yet. There is a Fulcrum dealer nearby in Nashville that I will contact if this second repair also fails.

Just got the wheel back today and the replacement is a silver stainless DT double butted spoke.

Leaving now for a 50 miler......we'll see what happens.

Thanks for all the replies.

David
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Old 09-01-10, 08:17 PM
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With about four months and around 5000km and I've got no broken spokes yet...I have the 2010 R5's...There was a small hop in the rear wheel after about a month and a half of riding which was fixed with a quarter turn of one drive side nipple...The wheel was still round and tension balanced after the minor tweak so I didn't mess with it any more....It's been fine since...

The Fulcrum/Campy anti rotation ring is an excellent investment since the spokes are straight pull and have a tendency to twist from beautiful aerodynamic blades to horrible non-aero paddles when you turn the nipples...and once the spoke is twisted it's kind of difficult to straighten out...The anti-rotation ring is far kinder to the spoke than any crescent wrench or vise grip could hope to be...If you don't want to spend the fifteen bucks or whatever the anti-rotation ring costs, you can probably make something that works just as well with a small block of wood with a slit sawed into it....now that I think about it, I kind of feel stupid for paying money for a tool I could have made at home in less than five minutes...

If you're ordering replacement spokes for 2010 Racing 5 wheels, make sure to get either the R5-MKB02 mini spoke kit (if you can even find them) or the R3-MKB mini spoke kit (which is actually for pre-2010 Fulcrum R3 wheels...but the spokes are the same length as the ones used on the 2010 R5 wheels)...If you get the R5-MKB kit (which is for pre-2010 R5's), your spokes will be a bit too short...All the part numbers above are for black spokes...If you want silver instead, change the B to an S...
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Old 09-01-10, 08:35 PM
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BTW, in my experience using a butted spoke to replace a bladed one isn't the best idea ever...

The butted spoke isn't going to handle the tension the same as the other spokes...Which could be why the replacement spoke broke...

Another reason the replacement spoke could have failed is if the mechanic used a standard spoke and straightened out the elbow bend instead of using a straight pull spoke...which would explain why the spoke failed at the hub...I've seen this done as an emergency fix when no straight pull spokes were available but it isn't a good long term solution since the elbow bend of a standard spoke is already it's weakest point before you add the additional stress of bending the metal again...
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Old 09-01-10, 11:18 PM
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A quality double butted spoke like a DT competition isn't going to break just because it's put on a wheelset that features bladed spokes. That's absurd.

If your mechanic attempted to make a straight pull spoke from a J-bend, he's a ****ing ******. Seriously. No wonder it failed.
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Old 09-02-10, 02:34 PM
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I have Racing 3s on two bikes. Both rear wheels broke a spoke within the first 1000 miles, both were fixed under warranty by Fulcrum. No problems in the last 1000 miles. My LBS put it down to a fluke!
Must admit I was disappointed but love the wheels all the same.
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