No seals etc required, crack old sprocket off with a chain whip while holding the driver still with the tool, quick wipe of the seal with a lint free cloth soaked in eco friendly degreaser, then spin splined carrier on with the sprocket already clipped on, before setting off stamp on the pedal to tighten the sprocket fully.
One side note with 99% of setups its far better to retrofit the slim rather than the standard carrier.
Dave
The likelihood of the current seals remaining fine is good news indeed Dave - thank you.
This makes me feel more confident about tackling the job myself although its a shame about having to buy the tool for a once off.
Too, the fortnights wait it takes to receive anything hereabouts.
Short of hearing its unlikely to work on my setup, its a little late in the day for me to be considering the slimmer carrier, having already had the standard one arrive this morning.
An already expensive postage, coupled with added insurance to return it to Germany in hope of a swap would also add 2 to three weeks to sorting this out in that the company would want one to arrive before sending the other creating a wait in the order of a month to five or even 6 weeks depending how things went.
Granted the post to Germany at this time of year would be unlikely to be held up due to weather but still..... a month is a month longer than I wanted to be rolling with lowered gearing.
Also what exactly does the slimmer carrier do to the chainline?
I'd sort of figured moving my Surly Ogre's front Thorn reversible front chainring on Thorn cranks, from the middle position to the outer would eat up most of the chainline difference?
I don't have a link currently for the Thorn cranks but the outer ring position are the same "spider"(?) 110 bcd as they currently enjoy though in the inner middle position.
Whoops I do:
https://www.sjscycles.co.uk/cranks/140-thorn-11074-pcd-triple-solo-alloy-crankset-silver/?geoc=AUWhat might some of the issues your aware of be? I'm open minded enough to make an order I guess as I can take a loss and attempt to sell locally the original one.
Its the time factor that gives me pause as I was hoping to get away for a trip on my bike next week due to have a few weeks up my sleeve.