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11
Non-Thorn Related / Re: Mobile phone on handlebar bag
« Last post by PH on February 15, 2024, 07:15:04 pm »
Be mindful that your iPhone can use a lot of data when following a route in real time, battery life too.
Good points.  The battery usage is easy to deal with using battery packs. Google maps uses around 0.7MB a minute when navigating so a GB will last around 24hr.  There's other options where you download the mapping and no data is used, I've tried OsmAnd which I didn't get on with and there's a new cycletravel app which I haven't tried (I'm a fan of the website mapping)
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Non-Thorn Related / Re: Mobile phone on handlebar bag
« Last post by PH on February 15, 2024, 07:03:54 pm »
I do some food delivery courier work, deliveroo and the like, which relies on the phone for directions and job info.  After trying several options I got a Quad Lock and it's been flawless for three years. Pricey for what it is, and I'm not sure how you'd mount it to tilt, but if you go down that route it's worth a look.
One of the things I tried was putting the phone in the transparent lid pocket of my Ortlieb bar bag.  That's a bit different to the Carradice, so I don't know how comparable it is.  I found the bar bag bounces a fair bit, that's OK unless you're trying to read the detail, while in traffic, over a rough bit of road.  I also found that the touch screen, through the plastic, couldn't be relied on.
To keep the phone steady within the pouch, I cut a piece of  correx board to fit, with a cut-out for the phone.  The phone did get warm while charging, I don't know if that does it any harm.
My preferred way to navigate urban areas is Google Maps with bone conductive headphones, takes a little getting used to, then you can keep your eyes on the road.  They're also great to have for touring entertainment, much easier than carrying book and radio. 

13
Non-Thorn Related / Re: Mobile phone on handlebar bag
« Last post by in4 on February 15, 2024, 06:58:30 pm »
Iíve seen dedicated cases being used by food delivery cyclists. Perhaps one of those might be an option; leaving your rack top map case free for just paper maps.
Be mindful that your iPhone can use a lot of data when following a route in real time, battery life too.
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Non-Thorn Related / Mobile phone on handlebar bag
« Last post by Andyb1 on February 15, 2024, 04:45:17 pm »
I am not a fan of GPS navigation, I much prefer maps, but google maps has sometimes helped me find a location and I want the option to be able to see my iphone while riding.   What I have found is that it must be tilted back about 45 degrees so that I look at it square on - if mounted flat it reflects the sky.

At the moment I am thinking of mounting it inside the plastic cover of my Carradice Super C handlebar bag.  If the bag is tilted backwards I can see it, I can run a power lead to a small power bank inside the bag and the clear plastic window allows the touch screen to be used.   I will need to sew the original window to make a pocket for it so it does not move - but before I do that I wondered what others did?
15
Rohloff Internal Hub Gears / Re: First oil change
« Last post by Andyb1 on February 15, 2024, 04:35:00 pm »
...
After a 20 mile ride I removed the plug, put a little plastic container between the spokes and left it to drain, occasionally turning the wheel a little either way and also leaning the bike sideways.   Got quite a lot out, not far off 125ml.  Then flushed it.  Seemed better to add flushing oil once I had got as much oil out as possible,

I assume you meant 25ml, not 125.

No, I meant 12.5ml.
It was difficult knowing exactly what volume came out as a little spilled, but when I later poured the drained oil into the empty little bottle that the new oil had come in there was around 10ml.  The hub is 1 year old, does not leak, so I guess 12.5ml of oil was originally in it?
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Rohloff Internal Hub Gears / Re: First oil change
« Last post by Matt2matt2002 on February 15, 2024, 11:51:56 am »
...
After a 20 mile ride I removed the plug, put a little plastic container between the spokes and left it to drain, occasionally turning the wheel a little either way and also leaning the bike sideways.   Got quite a lot out, not far off 125ml.  Then flushed it.  Seemed better to add flushing oil once I had got as much oil out as possible,

I assume you meant 25ml, not 125.

That's a nice tip. Small plastic container between the spokes and tipping / leaning the bike.
I usually leave the syringe tube attached over night to drain onto tissues.
I'll try your tip next oil change.
Thanks

Matt
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Rohloff Internal Hub Gears / Re: First oil change
« Last post by crg on February 15, 2024, 09:05:43 am »
Thatís a useful picture.  The original oil was indeed very black.  ...

Ok, they must have changed the formula over a year ago.  I bought my hub in early 2013, and I think mine came out of the factory only a few months before it reached my hands.

Perhaps it also had some graphite in the oil back then, that would have added black to the color?

Rohloff oil is a fixed, same formulation, only as long as any batch lasts. Every time a new batch is made, the formulation changes on hand of what is available and presumably also on hand of developing information flowing from dealers and hubs returned to factory, plus from riders. This isn't unique to Rohloff: even big name motor oils from major vertically integrated brands (meaning they find, extract and refine their own oil and are thus in detailed control of the mixture in the retail can) is subject to creeping development on the pattern and for the same reasons as Rohloff. I don't know a great deal about oil chemistry but I do remember an Atlas Copco general manager once telling me that the sulphur content of oils from a particular region was higher than anywhere else in the world. If Shell and Mobil etc cannot guarantee the exact, precise same oil from year to year at the point of sale, it follows that Rohloff cannot either. But why should they want to? The oils available to them are not likely to be a retrograde; quite the opposite, they are likely to be better at any step, though probably also more expensive.

On the difference in colour between the cleaning oil and the all-seasons oil straight from the bottle: Heavy crude is black because of the way it is formed from plant matter by time and pressure. At each successive stage of refinement it gets thinner and greyer, until it is very thin and clear. I suspect that both the Rohloff oils would be described by an engineer as "light machine oils" but the cleaning/low temperature oil is lighter because it so thin from further refining than the darker all-seasons oil, each further stage of refinement removing more impurities and therefore becoming more translucent.

Rohloff itself has told us something about their oil, specifically in the warning not to put any old automobile or other non-Rohloff oil in their hub: they need to specify it so that it works with Rohloff's weight-saving filter scheme.

I was under the impression that the oil is synthetic and hence not varying in composition. Color could be from additives.
18
Bikes For Sale / FOR SALE: Superb Thorn Sherpa, 610S, ready to tour - £795 o.n.o.
« Last post by kwkirby01 on February 15, 2024, 08:02:13 am »
*** CORRECTION - FRAME SIZE IS 610S, NOT 560S ***

For reference, I am 177cm tall and have a 32" inside leg. When I built the bike I felt the next frame size down, 560S, would be too small. I would have preferred a slightly lower standover height, but it has in no way been detrimental to my enjoyment of the bike, mainly because most of the time, I am riding the bike, not straddling it!

As a long-time lurker and occasional poster here, I have been grateful for members' advice and experience over the years. Thank you.

I bought my first Thorn bike nearly 20 years ago and have been delighted by the quality and performance of these machines.

However, my current Sherpa is not getting the use it deserves, and I have decided that an e-bike will suit my needs better. I am therefore selling my cherished Sherpa, handbuilt by me, and wanted to give members of this forum first refusal before listing on eBay.

It has a very high specification, has been well cared for, and could take the buyer on a long tour with no major changes.

The bike has always been stored inside and regularly serviced. I've not used it for a few months, so the chain is a little dry as you can see in the photo. I will service and lubricate it before the sale and supply a spare chain.

I travel a fair amount for work, M74/M6/M40 to Oxford, M4 Newbury to Bristol and M5 to Bristol, so could arrange to meet and deliver for a contribution to fuel.

Thanks for looking, and do message me with any questions you may have.

Kevin

Frame and Fork
Frame: Thorn Sherpa size 560S, MkII
Fork: Thorn ST Touring fork
Colour: Go faster red
Headset: Orbit XLII

Contact Points
Handlebar: Moustache Bar
Seatpost: Silver Thompson layback
Saddle: Not included
Pedals: Wellgo reflective platform pedals
Stem: VO 110mm 17 degree with cane creek spacers
Grips: Black tape with gel inserts

Wheels
Wheels: DRC hand built touring wheels
Tyres: Schwalbe Marathon Dureme 50-559
Front hub: Shimano dynohub DH 3N70
Rear hub: Shimano XT ??
Mudguards: SKS 55mm with mud flaps front and rear

Gearing
Crankset: Vintage Shimano FC-M730
Chain rings: Specialities Zephyr 45-33-22
Sprockets: Shimano 11-36 Hyperglide
Front mech: Shimano
Rear mech: XT Low rise wide range
Shifter: Silver Shifters, microshift friction shifters

Brakes
Brakes: XT parallelogram brakes

Lighting
Front light: Son Edelux II (dynamo)
Tail light: Son rear light (dynamo)

Please click on the image below for more pictures.




19
Rohloff Internal Hub Gears / Re: First oil change
« Last post by mickeg on February 14, 2024, 10:01:08 pm »
...
After a 20 mile ride I removed the plug, put a little plastic container between the spokes and left it to drain, occasionally turning the wheel a little either way and also leaning the bike sideways.   Got quite a lot out, not far off 125ml.  Then flushed it.  Seemed better to add flushing oil once I had got as much oil out as possible,

I assume you meant 25ml, not 125.
20
Thorn General / Re: Thorn Touring Bike Bible
« Last post by in4 on February 14, 2024, 08:35:59 pm »
Possibly right. I still refer back to it from time to time re tyres, brakes, panniers, Andyís tool kit and Mercedes van etc. Hope heís having a great retirement pedalling and driving as far as the inclination takes him.
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