Planet X pro carbon speed wobble, questions
Comments
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Or just ride it. The bike sounds fine and I don't know anyone who tests a bike like this ? It rides well - theres no play ? Go for it.0
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Or just ride it. The bike sounds fine and I don't know anyone who tests a bike like this ? It rides well - theres no play ? Go for it.
I've sent PX a message to see what they think about this but thanks for the replies and the assitance.0 -
Have you minutely examined the fork for cracks ? I guess it's conceivable that it got damaged in transit..(or in the warehouse before dispatch)0
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Have you minutely examined the fork for cracks ? I guess it's conceivable that it got damaged in transit..(or in the warehouse before dispatch)
Yeah, I don't see any cracks.0 -
When I bought a pair of those (Planet X pro Carbon) forks a few years ago I was aware of the internet rumour mill about them being "flexy".
In my experience this is nonsense. I have them on a pretty rigid alu frame that has since done several thousand miles including alpine descending (and ascending of course but the point here is high speed sh1tscary downhills), TT-ing and the usual hilly, bumpy stuff round here. They seem absolutely fine and, for the money, very lightweight and well made.
Whatever is "wrong" with your bike, I would say it's not a fork design issue.0 -
I don't know how it would behave on alu frame. One thing to note is that instead of this:
http://www.planetx.co.uk/i/q/FSPXFBUMK2/planet-x-carbon-steerer-fork-bung-mk-2
(which I didn't order with the frameset as I had no idea) the LBS used this bung:
http://www.wiggle.co.uk/pro-headset-carbon-expander-cap/ - although PX Support said this is fine.
Also the headset is correct. Best bet would be to find another PX pro carbon owner and compare both bikes I guess.0 -
I would return to PX and ask for a replacement/refund as it sounds like a manufacturing issue.0
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^ really?! Lol.
The only time I ever turn the bars all the way 90 degrees is to check I havent cut the cable outers too short so I can turn my bars to fit in the bike box, otherwise there is no reason.
For all I know my bike could act the same!0 -
Seems like a non-issue in the end and I have gotten used to it after few rides. I hope it stays that way
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I think I said that orginally... :-)0
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Deja vudiamonddog wrote:The Pro Carbon can feel very light on the front end when you first ride it but after a few rides it's not even noticable. Shorter stems can sometimes make the steering feel more jittery IME. 0 -
Thing is I also changed the stem from 100 to 80mm (not because of the wobble but I was coming from a 56cm top tube) - didn't notice a difference.0
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FTFYzefs wrote:Seems like a non-issue from the start0 -
I am scared of my PX because of this reason had an epic wobble at 47mph, bike was built by a fiend a very good mechanic and everything is tight I Running fulcrum quatros 90mm stem but bike feels very short so a longer stem is in order but can feel flex, could I buy another fork?TREK REMEDY 9
ORANGE CRUSH
DOLAN TUONO
PLANET X PRO CARBON0 -
pauljoes wrote:I am scared of my PX because of this reason had an epic wobble at 47mph, bike was built by a fiend a very good mechanic and everything is tight I Running fulcrum quatros 90mm stem but bike feels very short so a longer stem is in order but can feel flex, could I buy another fork?
Someone mentioned upgrading the fork and the front end became more stable so I guess it depends on the new fork's stiffness. The post was here on bikeradar I think and it was a Deda fork.0 -
Wobbles at speed can happen on any bike no matter what fork/stem/wheels or other components are fitted. A longer stem may help in making the front end feel a bit more planted, I run a 90mm on my small PX frame and it is fine.pauljoes wrote:I am scared of my PX because of this reason had an epic wobble at 47mph, bike was built by a fiend a very good mechanic and everything is tight I Running fulcrum quatros 90mm stem but bike feels very short so a longer stem is in order but can feel flex, could I buy another fork?0
