81
Cycle Tours / Re: Sri Lanka 2026
« Last post by RonS on December 10, 2025, 10:39:27 PM »Great stuff, Andy. Here's hoping that some sort of normalcy has returned by the time of your trip. That cyclone has certainly done a number on them.
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82
Rohloff Internal Hub Gears / Re: ?oil leak
« Last post by swayzak on December 10, 2025, 09:34:32 PM »Just a thought……the OP had a problem with gear slippage in the lower ratios and then changed the oil (and adjusted the chain) which sorted the problem……then found the oil leak.
Could an oil leak have been there all the time (and emptied the hub of oil) which has now become more obvious with new (more) oil in the hub?
Did much oil come out when the hub was drained or was it dry?
Aaargh! I hope not..
Have reattached ex box successfully now and will hold off on another oil change and keep a close eye on things
83
Lighting and Electronics / Re: likely water damage in Son 28 on tour any advice
« Last post by Jornw on December 10, 2025, 08:54:01 PM »Hi,
I have an alternative theory, based on personal experience with my Edellux front light and SON 28. My light went out during a very wet bike trip in Norway. Back home, I opened the light and found much moisture inside, partly covering the electronics. Further forensics showed the the elastomer O-ring, normally sealing the front glass to the housing, had become brittle and broken at several locations. (I suspect that the O-ring material was chemically incompatible with cosmetics carried out by previous owner. This could include applying a polishing wax or even worse, spraying frame with a chemical). I dried the light internals and installed a new O-ring. My Edellux has worked flawlessly since. More details can be found elsewhere on this forum.
To elaborate my theory; it would not come as a surprise if the moisture in the light also affected the current supplied to the "Sinewave". Perhaps the SON 28 was perfectly innocent after all.
I have an alternative theory, based on personal experience with my Edellux front light and SON 28. My light went out during a very wet bike trip in Norway. Back home, I opened the light and found much moisture inside, partly covering the electronics. Further forensics showed the the elastomer O-ring, normally sealing the front glass to the housing, had become brittle and broken at several locations. (I suspect that the O-ring material was chemically incompatible with cosmetics carried out by previous owner. This could include applying a polishing wax or even worse, spraying frame with a chemical). I dried the light internals and installed a new O-ring. My Edellux has worked flawlessly since. More details can be found elsewhere on this forum.
To elaborate my theory; it would not come as a surprise if the moisture in the light also affected the current supplied to the "Sinewave". Perhaps the SON 28 was perfectly innocent after all.
84
Cycle Tours / Sri Lanka 2026
« Last post by Andyb1 on December 10, 2025, 08:14:33 PM »Airline tickets bought. Railway tickets to LHR bought. Raven sorted. Leaving UK in early Feb 2026.
Horrible flooding in SL so I wondered about cancelling but as I go in 2 months time I am continuing.
Details in my CycleBlaze Journal
https://www.cycleblaze.com/journals/srilanka26/
Horrible flooding in SL so I wondered about cancelling but as I go in 2 months time I am continuing.
Details in my CycleBlaze Journal
https://www.cycleblaze.com/journals/srilanka26/
85
Rohloff Internal Hub Gears / Re: ?oil leak
« Last post by Andyb1 on December 10, 2025, 05:25:54 PM »Just a thought……the OP had a problem with gear slippage in the lower ratios and then changed the oil (and adjusted the chain) which sorted the problem……then found the oil leak.
Could an oil leak have been there all the time (and emptied the hub of oil) which has now become more obvious with new (more) oil in the hub?
Did much oil come out when the hub was drained or was it dry?
Could an oil leak have been there all the time (and emptied the hub of oil) which has now become more obvious with new (more) oil in the hub?
Did much oil come out when the hub was drained or was it dry?
86
Rohloff Internal Hub Gears / Re: ?oil leak
« Last post by UKTony on December 10, 2025, 01:12:41 PM »The simple answer is anti-clockwise to get to gear 14.
If I'm looking at the inside surface of ex-box face on, do I turn the ex-box nut clockwise or anti-clockwise for gear 14?
87
Rohloff Internal Hub Gears / Re: ?oil leak
« Last post by mickeg on December 10, 2025, 11:59:39 AM »When I put my EX box together and do not get all gears, say if the shifter only goes from 1 to 12, I put the hub into that gear the shifter says is gear 12. But I know that I actually put it in the highest gear that way, so I take the cover off the EX Bos, then turn the shifter to 14 and reassemble.
Or if the shifter only worked from gears 4 to 14, same concept. Set it at 4 which is the lowest gear, take the cover off the EX Box, set to gear 1, reassemble.
Takes less than two minutes, no tools needed.
Or if the shifter only worked from gears 4 to 14, same concept. Set it at 4 which is the lowest gear, take the cover off the EX Box, set to gear 1, reassemble.
Takes less than two minutes, no tools needed.
88
Rohloff Internal Hub Gears / Re: ?oil leak
« Last post by PH on December 10, 2025, 10:56:40 AM »If I'm looking at the inside surface of ex-box face on, do I turn the ex-box nut clockwise or anti-clockwise for gear 14?I can't remember, but there's no need to. You can change gear with an 8mm spanner while the wheel is in the dropout, turn it to one end, turn the pedals, turn it to the other and you'll know. I frequently forget to change gear before disconnecting and do the above, it takes a couple of seconds.
89
Rohloff Internal Hub Gears / Re: ?oil leak
« Last post by swayzak on December 10, 2025, 10:21:12 AM »Thank you
It sounds from what eveyone has said that it's probably not worth doing a repeat oil change 7 days after the previous change to cure this issue (apart from peace of mind maybe)?
If I'm looking at the inside surface of ex-box face on, do I turn the ex-box nut clockwise or anti-clockwise for gear 14?
It sounds from what eveyone has said that it's probably not worth doing a repeat oil change 7 days after the previous change to cure this issue (apart from peace of mind maybe)?
If I'm looking at the inside surface of ex-box face on, do I turn the ex-box nut clockwise or anti-clockwise for gear 14?
90
Rohloff Internal Hub Gears / Re: ?oil leak
« Last post by JohnR on December 10, 2025, 09:55:24 AM »From memory, use a spanner to turn the gears to one of the limits, turn the shifter to the corresponding limit and then fit the ex-box. Finally check if you have the full range of gears.
I've had the leakage problem in the past. You may want to draw off a little oil from the hub. As already noted, there doesn't have to be a lot of oil in the hub to be able to keep everything lubricated. There's the risk that when doing a flush and refill of ending up with more oil in the hub than at the start unless you've been patient in trying to extract every drop.
I've had the leakage problem in the past. You may want to draw off a little oil from the hub. As already noted, there doesn't have to be a lot of oil in the hub to be able to keep everything lubricated. There's the risk that when doing a flush and refill of ending up with more oil in the hub than at the start unless you've been patient in trying to extract every drop.