Tag Archives: cannondale

Wheels Manufacturing BBKT and Cannondale System Six

Wheels Manufacturing BBKT and Cannondale System Six. Wheels MFG make many bottom brackets among other products, allowing cyclist to remove the BB30 / press ft bottom brackets to install a more traditional creak free system. Very nicely made components with fairly detailed instructions. However I am about to fit for the third time the “PF30A Outboard Angular Contact BB for 22/24mm Cranks (SRAM) – Black” simply because as detailed as the instructions are the company send out the component with lots of axles spacers and cup spacers. Now that might sound handy but seeing as this BBKT has been made specifically to fit a GXP to a System six frame you’d think that they would inform you of which ones to use.

But unfortunately WheelsMFG don’t, so the already flawed GXP system now adds in some new factors

Of course the Q-factor of the system should be correct for the chainset to be fitted. And the asymmetrical Cannondale design means the cups are different for both sides. So on the first attempt we fitted 1mm cup spacers on both sides and some axle spacers to take up the slack. This did not work to our liking as the axle was not as smooth as desired. We measured the donor bike at the bottom bracket and worked out that with a 2.5MM spacer on one side and a 1MM spacer on the other the Bottom bracket would be the correct length. It worked perfectly and no spacers on the axle were needed…. (Why did they send them in the first place). However after two rides on the bike and happy with the result we decided to measure the crank distance from frame, only to find out that it is 3MM out.

Fitting a Wheels Manufacturing PF30A bottom bracket to a Cannondale System Six

So simple maths, change the spacers from one side to the other and the job should be correct. I just don’t understand why the drive side cup did not have the extra 2.5MM designed into it and the off side an extra 1MM no spacers would be needed anywhere, remember this is designed for this bike….

Wheels Manufacturing BBKT and Cannondale System Six

So in conclusion, drive side 2.5MM and off drive side 1MM no other spacers are required. I hope this saves other people some time.

Link to Bottom Bracket https://wheelsmfg.com/bottom-brackets/cannondale-pf30a/pf30a-outboard-angular-contact-bb-for-22-24mm-cranks-sram-black.html

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Cannondale lifetime guarantee

Cannondale lifetime guarantee is it a good reason to buy a new Cannondale bicycle, with the knowledge that your bike is guaranteed for a lifetime. Obviously many believe so, and on top of that Cannondale make such nice light bikes it is easy to want to buy one of their very nice machines. Twelve years ago I bought a Cannondale R900SI and rode it about 500 miles a year for the next ten years, not a great deal but enough for me to be happy in my ownership of a nice road bike. After having owned at least a dozen bikes previously. The last two years saw me increasing my mileage and I was then getting up to 2000 – 2500 miles a year for the last two seasons on the bike. Unfortunately I noticed a funny noise coming from the frame and realised that it had cracked near the saddle pin along the end of the top tube. In all honesty I was ready to throw the bike away as it had twelve years and about 10000 miles on it.

However I remembered the lifetime guarantee and sent it off to my local bike shop. Who were very helpful. Unfortunately I have since been told Cannondale have a policy on what lifetime means, it is in fact the lifetime of what a high quality Aluminium product should be and not at all the lifetime of me, the purchaser. This post is simply to put it out there, maybe Cannondale should just give a limited frame guarantee of five years as obviously very rarely would they need to supply a frame on the “lifetime guarantee”. Indeed I wonder what the lifetime of a carbon fibre frame should be…. Below a part of my correspondence coming back from Cannondale. Thanks for reading.

Our ‘Lifetime Warranty’ like anyone else’s, covers issues arising from manufacturing defects and faults only. Generally such issues rear their head very quickly (usually unless unused within first 1-4 years of ownership). Aluminium, like all other frame materials has a finite lifespan and is heavily affected by ‘fatigue’ (structural weakening through usage). Due to its nature, at some point in their life all alloy frames will fail unless unused. High use =high fatigue = shorter lifespan (WILL fail sooner). The exact lifespan of a frame is dictated by the amount and type of use and maintenance that a bike receives and, as such, can vary massively.

Any metallurgist will tell you that the life expectancy of a faultless alloy frame which receives normal use and regular maintenance is around 5-7 years as dictated by the natural qualities of the construction material. This however takes no account of specific usage. One person can use their bike as much in one year as another does in 10. As such, each case is individual and is COMPLETELY dictated by individual personal circumstances (unless there is a known design fault / issue). This is the reason for a ‘Lifetime’ Warranty. The statement is open ended to allow for timescales dictated by personal circumstance. We will not and do not abuse that. It does not mean however (as stated in our manual) that a bike made of finite lifespan construction materials can or will last forever but, it likewise doesn’t mean that all users are penalised with a set timescale of cover. i.e the customer who has a 15 year old bike that he has only ridden 5 times and it has broken would not get warranty when really, if it hasn’t been crashed, he should. On the flipside it is quite possible if an alloy 5yr old Cannondale bike has broken, but has clearly been well used and covered a lot of miles that it has failed as a result of being ‘worn out’ (fatigued) as opposed to a warrantable issue. A ‘Lifetime’ Warranty rather than a specific timescale warranty gives us the chance to judge every case individually and does not unduly penalise anyone. It should mean that every one of our customers ends up getting their monies worth from their bike.

Cannondale lifetime guarantee

Cannondale lifetime guarantee Cannondale lifetime guarantee

I think the frame broke due to the steel cap that inserts into the boss of the frame, it reacted to the Aluminium and oxidised therefore weakening the frame. But hey what do I know? I know that I wanted to keep the bike as I was happy with it and was going for a respray this winter, now however I need to find a frame which is a pain in the backside. I would almost like to buy another Cannondale, however with their Cannondale Lifetime Guarantee appearing to be nothing other than  a marketing ploy, why would I.

Thanks for reading.

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