New Bike With a Few Issues

gbrnole

I just bought a Cannondale Rize 2, quite pleased with it but am having a few issues with the rear suspension.

Just been riding it around the street and after hopping off a kerb i heard a rubbing sound, at first dismissed thinking it was my jeans catching the back wheel, hopped off another kerb and it did it again - turns out the back wheel is hitting the back of the seat tube and the front derailleur cable stop.

Surely this isn't normal ?

See tyre mark on back of seat tube below.

nicklouse

yes the shock is bottoming out.

have you set the shock pressure?

gbrnole

Yeh i set it up to the correct sag - should there not be some mechanism when it reaches the end of its travel as opposed to just hitting the back of the seat tube?

nicklouse

does not look like there is.

talk to the shop if you are not happy.

gbrnole

Would I have any right to request a refund. I was extremely close to buying the mojo but took the rize in favour, now having second thoughts.

I can just imagine that rear tyre hitting the seat tube over time will definately damage the frame and tear the derailleur cable stop out.

I do not want to lose any travel by running real high pressures to avoid the problem and ultimately having a 100mm travel bike.

robvalentine

sounds like a warrenty issue, take it to the shop and get them to ring cannondale about it

nicklouse

it seems that the tyres fitted are too big, or you are running pressures in the tyre that are higher than they expected.

TBH i would get the bike swapped for a different one.

gbrnole

Is it really a warranty issue though? If that is the bike design then I am not happy with it and don't want it anymore.

Well the tyres fitted are the original spec and I looked at the back tyre as i was riding it and thought to myself that it could do with a bit more air in it but figured it wouldn't matter for messing around on the street.

Nick, when you say swap for a different one, do you mean swap for the same model and hope that the present one is faulty or swap for a different model entirely?

Andy B

Swap would usually be for identical model

nicklouse

alex it all depends on what is happening.

yours may be faulty. or it may how it is.

gbrnole

Thinking about it I cant figure where the fault, if a fault could be with the frame.

Only thing I can imagine is the rear shock is out of tune and needs to bottom slightly earlier so the wheel doesn't travel into the frame.

If it turns out everything is normal and I'm not happy with the bike due to the issues - would I be within my right to ask for store credit and get a different bike? Have you heard this happening with other full sussers?

Want to know where I stand before calling the shop tomorrow. Thanks

nicklouse

i cant say where you stand, AndyB might, but To me tyre hitting the saddle is acceptable but the seat tower/post/tube is not.

Andy remember the issues on the Focus Bigbud?

gbrnole

yes, i agree that the tyre hitting seattube is not acceptable on a 4k bike.

What was with the Bigbud?

nicklouse

they had fitted too big tyres. and had clearance issues. new tyres were supplied and fitted FOC.

Andy B

Yup the Focus BigBud was specced with tyres far too large for the frame/swingarm = clearance problems. Problem resolved with new (different) tyres FOC as nicklouse says.

The retailer might give you a credit note for another bike in the name of good service, they may just swap it for the exact same bike or they may swap tyres or shock, it all depends on A) how good the shop is & what the problem is.

gbrnole

I can't swap tyres, these nics i run on all my bikes

Would you be inclined to say that this issue is a fault?

supersonic

seems like poor design if the tyres are hitting the seat tube. Is it impeding the stroke, or just happens in the last few mm of travel? An nn doesnt strike me as a particularly large tyre for a bike like this. I know i'd take it back.

gbrnole

took the bike back and on testing a rize 4 they had in store it didn't have the clearance issues. The Tyre hits the seattube when the travel is at full compression, on the other rize which is the same size it had atleast 1cm of clearance.

nicklouse

so, new bike?

or what are they doing as it sounds like yours has issues

gbrnole

Well I don't know, the cannondale rep is on holiday until monday (typical) and they need to discuss with 'dale to see what the problem is.

We tried the rear wheel off my rize on the rize 4 and it had no issues with clearance.

Both rear shock stroke on each rize bottomed out at the same distance on the sanction so I can't see that its a shock issue allowing the travel to exceed its limit.

The other rize 4 was a large size also and we did various measurements around the stays, shock placement etc. to compare but with nothing obvious standing out.

Mancunianfightingcat

Sounds like the shock is the wrong one, either too short eye to eye or too much travel, that or the frame has been built wrong and the shock mount is too far along the top tube or something similar. Either way 'it's not fit for the purpose' so worst case is money back, but sounds like it's a specific fault on your frame/shock so a repalcement should solve the problem!

gbrnole

We checked the shock eye to eye length in comparison with the other Rize and it measured up the same, stroke length same also.

I do believe that it is more of a manufacturing defect on this frame and a replacement would solve the issue. The frames are handmade so there may well be an error in placement of one of the mounts

Anyways, I shall update when I hear back.

gbrnole

Met Cannondale Rep today, said theres a problem - he has to go through the proper channels or something and will contact me in a few days to let me know what is wrong with it, if it can be fixed or if i need a replacement.