Bearbonesnorm wrote:I think you already know the answer Steve

Zippy wrote:How difficult is it to actually swap them?

slarge wrote:

Bearbonesnorm wrote:I think you already know the answer Steve

Thanks Stu, but in this moment of uncertainty I need some knowledgeable souls to tell me what to do.

slarge wrote:Cheers Dave for the offer, but they're 29 inch wheels.

I think I'll put the non dynamo hub on, and probably replace the SP with a Son hub at some point. Not been too impressed with the reliability of the SP hub, and it seems I am not the only one. And every time it fails it's a wheel rebuild - even for bearing replacement.

Thanks all, as Chew said, it will always be a niggling doubt, and I know where it will fail - just at the point where there are no bike shops and it's 10 past midnight.....

I'd say either way its probably going to be in the back of your mind all of the time if you take it?

Trail-rat wrote:has anyone actually had a look ?

i mean just how big a press we talking ?

i appreciate its not in everyones garage but i have a 20t in the garage - and access to a monster 150ton at work......

just curious as i have 2 SP hubs that will likely need bearings in their future.

slarge wrote:Cheers Dave for the offer, but they're 29 inch wheels.

Trail-rat wrote: i mean just how big a press we talking ?

i appreciate its not in everyones garage but i have a 20t in the garage -

Trail-rat wrote:Slarge - if you do cut it up i would be interested in seeing photos to see if its something i can work with - and to save destroying mine which are still under warrenty.

"Alas, SP hub dynamos are not user serviceable and indeed we are aware of no hub dynamos that are based on manufacturer’s recommendations. Any attempt to service a SP hub dynamo will void its two-year warranty. We have received quite a number of requests from consumers on how they might service their hubs even accepting that attempting to do so would void their two-year warranty. They accept this risk thinking that this would save the need to disassemble and rebuild the wheel. Unfortunately, the design of SP hub dynamos like that of many other brands requires disassembly of the wheel for bearing replacement. Furthermore, the delicate generator mechanism housed within the hub body must be re-calibrated to tolerances of less than a millimetre each time bearings are replaced. Failure to carry out this operation properly (which is likely without expert knowledge, experience and tools), will generally result in catastrophic failure of the generator mechanism after a period of use. SP engineers have considered making their hubs user serviceable (with much prodding from IDC at the behest of our technically savvy testers). But the expertise and equipment required to carry out recalibration of the generator mechanism each time the bearings are replaced presents a technical hurdle that SP engineers, and indeed all other hub dynamo manufacturers we are aware of, have so far declined to attempt."

johnnystorm wrote:Reading that quote and considering that one of my SP's will be over 2 years old when/if it does go I might as well just bin the wheel as the faff of disassembly, sending abroad, and reassembling into a potentially already battered wheel seems a bit pointless.