Recent Posts

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11
Muppets Threads! (And Anything Else) / Re: Groin pain
« Last post by Andre Jute on November 23, 2025, 06:50:08 PM »
Great news! Wish you a speedy recovery, Matt.
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Muppets Threads! (And Anything Else) / Re: Groin pain
« Last post by Danneaux on November 23, 2025, 04:18:14 PM »
Earlier in this thread, Matt wrote...
https://thorncyclesforum.co.uk/index.php?topic=15158.msg116001#msg116001
Quote
Not sure if I shared with this forum but I have been receiving Chemo for stomach cancer since June/July....Now awaiting a consultation with the surgeon next week for a future plan of action. Probably surgery.

Matt indeed had his surgery on 17 November and today wrote with wonderful news, asking me to update the Forum...
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The operation went well and surgeon said he was pleased with my progress
Perhaps home in another 8 days

Best regards Mart

Pass on my good news to the group Matt
Yay! :) All best wishes for the speediest recovery, Matt!

ATB, Dan.
13
Lighting and Electronics / Re: likely water damage in Son 28 on tour any advice
« Last post by Andyb1 on November 22, 2025, 10:55:39 AM »
If condensation had got the stator / rotor damp then they may have rusted.  Rust on stators / rotors will reduce their efficiency so the output may have become too low to be useful.  It is a known problem on old motorbikes.
Or a corroded internal connection?
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Lighting and Electronics / Re: likely water damage in Son 28 on tour any advice
« Last post by pandanroll on November 22, 2025, 08:39:46 AM »
Update: in January I returned the hub to the bike shop in London, they sent it back to Germany and it was fixed under warranty. No explanation given for the failure.

I'm attaching a PDF of the repair document SON sent me, when they suspected the contacts in the hub were damaged. This was not the cause of the failure, but they provided the doc as part of troubling shooting 'on the road'. It may be helpful for someone Googling SON failures, this is a possible cause.
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Non-Thorn Related / Re: Tyre pressure gauge
« Last post by mickeg on November 21, 2025, 05:13:02 PM »
...I think I used to be far more concerned with the ideal pressure when I was running narrower tyres, now I have nothing under 40mm I'm checking less often, maybe I've just become lazy!

For me, if it is a long ride, I am more likely to top up the tires.
I should have worded that better.  I top up the tyres just as often, what i don't often bother with is then checking the pressures with the digital gauge.

I am sure that at some point in time for some special reason, I checked a tire pressure after disconnecting the pump.  But that would have been years ago.  And if I did that, it would have been to try to compare a handheld gauge against a pump gauge.

If my bike tire pressure is under inflated by 10 percent, to me that is good enough.  Thus, I do not get too concerned about gauge precision on bike tires.

My car, if I am going to do a long trip, I check and want to get the right pressure at the start.  But then I am driving high speed, thus it becomes a safety issue.
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Non-Thorn Related / Re: Tyre pressure gauge
« Last post by Andre Jute on November 21, 2025, 12:19:28 PM »
Once upon a time, and perhaps still, Schwalbe sent out its tubes with a grey sticklike implement in the box. This was a manual pressure gauge. You put the rubber-lined right-angled end on the valve and a bar shot out of the other end. You then read the pressure on the scale engraved or embossed on the bar. This gauge was a freebie, so I just threw it in the bike tool drawer in the glove chest near the front door until one day I remembered that the toolkit in the days of the 356 series Porsche came with a gauge of the same general description, albeit metal rather than plastic, and wondered whether the Schwalbe version, given half a century of manufacturing development, wasn't worth more than its price. It turned out that the Schwalbe item's scale was too small to make it a precision instrument, but it gave a consistent quick reading of the 'close enough" or "in the right neighborhood" kind, and it was a featherweight, a couple of grammes.
17
Thorn General / Re: Paint wearing off forks
« Last post by mickeg on November 21, 2025, 11:24:59 AM »
I have not heard of paint wearing off to bare metal on a Thorn before.

My Nomad Mk II and Sherpa, if I recall correctly they used the base paint (or maybe it was a powder coat?), then added the decals, and a clear coat on top of that.  The clear coat protected the decals.  In some places, the clear coat flaked off of my Nomad frame, but since it was clear it is not something that is easily noticeable where it flaked off.  Clear coat on my Sherpa did a great job of protecting it.

I had a Surly years ago, that had a soft powder coat that easily wore off.  I bought some fingernail polish that was the closest match to it that I could find and used that to touch it up.  Maybe you could do the same? 

If you found some fingernail polish to apply to the places where it is worn off, that polish may be more durable than the original paint, you might only have to do it once.  I use black fingernail polish on my racks for touring where the racks were worn down to bare steel, the fingernail polish is pretty durable.  Fingernail polish is very convenient, has the built in brush, etc.

You can buy a clear coat version of fingernail polish.  If the paint on sharp edges wears off easily, you could apply some of that on the sharp edges to protect it.

Bicycles are supposed to collect nicks and scrapes and dents over time, I suggest you don't replace the fork.  The only reason I touched it up on my Surly was that I hung the bike on a car rack and drove a couple thousand miles.  Where the rack and bike contacted each other, the powdercoat wore off, that was just tooooo ugly to live with, thus I wanted to try to restore that.
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Non-Thorn Related / Re: Tyre pressure gauge
« Last post by PH on November 21, 2025, 11:24:58 AM »
...I think I used to be far more concerned with the ideal pressure when I was running narrower tyres, now I have nothing under 40mm I'm checking less often, maybe I've just become lazy!

For me, if it is a long ride, I am more likely to top up the tires.
I should have worded that better.  I top up the tyres just as often, what i don't often bother with is then checking the pressures with the digital gauge.
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Thorn General / Re: Paint wearing off forks
« Last post by PH on November 21, 2025, 11:22:56 AM »
I'm not sure what or where these "sharp bits" are?  Is something rubbing?  All paint wears if something is rubbing it, a bit of protective tape usually solves that, though it's worth trying to minimise the rub first. Other than that. the paint shouldn't wear off, the gunmetal grey is a DuPont paint, as paints go there isn't much tougher.  If it's fragile, there's been an error in it's application.  My two gunmetal frames have stood up well to the usual knocks.  Maybe a photo would be better than an explanation?  Is it bare metal underneath or the black ED coating?
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Bikes For Sale / Re: Thorn bike
« Last post by pandanroll on November 21, 2025, 11:15:08 AM »
Unfortunately for you, bikes are not selling well currently. I've seen some Rohloff Thorn's go on ebay for not much more for what you are asking for. A derailleur model would be valued at a less.
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