chris2392

Hi guys.


recently the bearings went in my fulcrum 7s so I have swapped
them for campagnolo zondas with a continental gp4000s ii tyres.

for some reason it just feels like i have to put so much more
effort in to maintain the same speed as before and climbing has totally
gone out of the window for me. i also seem to have to be a gear
or two lower on the flat.

I have been racking my brain for what the reason could be.

i have tried going a few days without riding to see if it was fatigue
which i don't think it was.

when i fitted the new cassette i only put the spacer that came with the
the new wheels on and not the one that came with the cassette as i kind of forgot.
could this be the problem?

Does the knew combo take a few miles to break in?

Would the Zondas be slower than the Fulcrums?

i'm open to any suggestions as i am really not enjoying my riding as much
at the moment and i am thinking of swapping back to the fulcrums just because
the felt faster with bad bearings.

Thanks

Chris

Homebrew01

If the wheel is rubbing the frame or brakes, or tires are really low, then you will feel a difference. Even tight bearingwouldn't be noticable unless they were so tight you can barely turn them by hand.

Are the rims wider, and perhaps rubbing the brake pads?

chris2392

thanks for the reply.

i always pump the tyres up before a ride and i have checked the brakes aren't rubbing the rims
and i don't think they are rubbing the frame unless they are moving while i am riding but i wouldn't know how to check that?

Homebrew01

Sounds like the "inverse placebo" effect.

Bill Kapaun

Same tires?
Same cassette?

chris2392

New tires, new cassette, new chain.

inverse placebo sounds about right actually

Bill Kapaun

Same brand & size tire?
Same ratio's on the cassette?

Wilfred Laurier

Campy wheels have a very restrictive weight limit - like 180 lbs or something - I believe because their hubs do not have the same outboard axle support as SHimano style hubs. If you exceed this weight then perhaps the hub is overstressed and causing more drag. Just a wild guess.

chris2392

Different brand of tire buy same size and yes same cassette ratio.

chris2392

Ahh I see, that may be why. I did buy the campag wheels with shimano hubs? I have no idea how much I weigh but I guess it is just under 180.. I'll have to read up about that though!

fietsbob

something you ate?

Wilfred Laurier

Nah. If you are not significantly over the weight limit then you have nothing to worry about. The 'Shimano' wheels from campy have the campy mechanism but with a shimano spline pattern.

Homebrew01

Wut ?!?!

chris2392

Yeah i've really got to cut down on the concrete blocks..

chris2392

do you think swapping from 23 to 25 tires would help take some of the stress away from the axel?

Wilfred Laurier

Not at all. Also, I hope you aren't considering that because of what I suggested earlier about the weight limit - campy wheels are sccessfully used by racers close to the weight limit, so this is almost certainly not the problem.

Wilfred Laurier

What wut?

AnkleWork

That's what happens to a thread like this. You drag it around until the wheels fall off.


Then it starts smoking.

berner

If you figure it out, send me a PM cause I had a day just like that today. For whatever reason, what should have been a fine and rewarding club ride turned into an ordeal.

Homebrew01

Stress on the axle is based on rider and bike weight. Different tires will not help you lose weight.

Homebrew01

I had never heard of a 180 weight limit for Campy wheels.

Wilfred Laurier

I was surprised when I saw ig too. I read it on their website two or three years ago. I may be mistaken and it has changed..

alcjphil

Me neither, but since the OP previously had Fulcrum wheels which use the same hub design as Campagnolo wheels because they are made by Campagnolo, there should besically be no difference

Wilfred Laurier

So I was wrong - 240 lb weight limit but with special concerns if you are over 180 lbs: What are the weight limits of the wheels? Where can I find the weight limits allowed by the wheels? - Info on Campagnolo wheels Campagnolo

Homebrew01

Thanks for the update.