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21
Wheels, Tyres and Brakes / Re: Thorn Audax Mark III maximum tyre width?
« Last post by Danneaux on April 21, 2018, 04:44:46 AM »
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Now it’s clear to me it’s all about mudguard clearance...So next tour, I will be trying out wider tyres on The Red Bike.
Yay! :) Please let us know how you come out, Graham. All good wishes,

Dan.
22
Wheels, Tyres and Brakes / Re: Thorn Audax Mark III maximum tyre width?
« Last post by Vintagetourer on April 21, 2018, 04:38:37 AM »
Thanks Dan.
Perfect information. Brilliant.
Eureka moment.  Bing!

Now it’s clear to me it’s all about mudguard clearance. Not brake or fork clearance.
I am in Australia the world’s driest inhabited continent so mudguards are total non necessity for me.
So next tour, I will be trying out wider tyres on The Red Bike.
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Wheels, Tyres and Brakes / Re: Thorn Audax Mark III maximum tyre width?
« Last post by Danneaux on April 21, 2018, 04:19:58 AM »
Hi Graham,

First, you'll need to determine if you have an Audax Mk3 or a Mk3R. Where yours is 4 years old, it is likely a Mk3 non-R.
=====
Going back through the archives of the Internet Wayback Machine to the 12April2014 Audax Mk3 (pre-R) brochure ( https://web.archive.org/web/20140412062013/http://www.sjscycles.com/thornpdf/Thorn_Audax_Mk3.pdf ), page 2 states....
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Please note, the Mk3 frame and its steel forks will accept tyres which measure 28mm (i.e. some tyres labelled as 700 x 32c) with sufficient clearance for mudguards - the carbon forks will accept 28mm tyres - but not with mudguards. The carbon forks will only accept tyres which measure 25mm, with mudguard clearance.
On the last page of options on the order sheet, we see...
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Schwalbe Marathon Supreme 32c folding Ultimate in reliability and longevity - still very quick. Actually measure 30mm - will fit the Mk3 frame, with mudguards using either of the steel forks. PLEASE NOTE these tyres need partial deflation to enable removal from the brake callipers - is this an issue for you?
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The latest Thorn Audax Mk3R brochure ( http://www.sjscycles.com/thornpdf/Thorn_Audax_Mk3.pdf ) states on page 2...
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What changes did I make to the
Mk3 frames to create the Mk3R?

Our Audax Mk3 had a 12 year production run, we offered different colours at different times and we changed the decals a few years ago, nothing else was changed - we considered it to be perfect! Only 2 things were changed when we introduced the Mk3R. [1] The rear brake bridge has been raised by 1.5mm - the frame now takes tyres which measure 31mm with
mudguards (e.g. 32c Schwalbe Marathon Supreme or 32cPanaracer Pasela).
Please note the brochure is referring to "32C" tires which measure an actual 31mm. Not all tires' actual size matches their stated size when inflated and "aged" on the rim for awhile...they tend to get wider and taller.

Also on page 2...
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Please note, the Mk3R frame and its steel forks will accept tyres which measure 28mm (Some tyres labelled as 700 x 32c actually only measure 28mm wide) with
sufficient clearance for mudguards - the carbon forks will accept 28mm tyres - but not with mudguards. The carbon forks will only accept tyres which measure 25mm, with mudguard clearance

On page 3...
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...Schwalbe’s latest Marathon Supreme (HS469) in 32c, which are still pretty quick but tougher and longer lasting. There is enough clearance, for sporty riding with 32c Supremes and mudguards, for the mudguards to be an asset, rather than a liability.

As I recall, some Forum members have also had good luck fitting Continental Gatorskins labeled in wider sizes to their non-R Audax Mk3s, but you will need to check the Forum archives to confirm. I suspect a 32mm Gatorskin might actually measure a bit shy of the stated size when mounted but again, it would pay to check first before buying.



Best,

Dan.
24
Wheels, Tyres and Brakes / Thorn Audax Mark III maximum tyre width?
« Last post by Vintagetourer on April 21, 2018, 02:53:52 AM »
Is the Thorn Audax Mark III maximum tyre width 28mm? Or could mine (about a 4 year old model) handle slightly wider tyres? Say 32mm?
When I bought the bike I vaguely recall that 28mm was the limit, but looking at the clearances I am wondering why. There appears to be enough space.
I have a light fork...the Reynolds 853 fitted...if this makes any difference. And Shimano Ultegra brakes are also fitted.
25
Muppets Threads! (And Anything Else) / Re: New shoes/boots
« Last post by Danneaux on April 21, 2018, 02:13:00 AM »
Anto,

I've got a range of hiking boots, but among the less expensive ones, I've found the Hi-Tech brand to be a good value when bought at sale prices here on my side of the Pond.

I have the Hi-Tech Altitude V model, rated as waterproof. After some pretty extensive wading of creeks and stream crossings in the rain, it has proven watertight for me (photos below). They sell for as much as USD$105, but I paid just over USD$40 for mine, a good value. It pays to look around online, as they seem to frequently go on sale. Here's some links:
https://www.amazon.com/Hi-Tec-Mens-Altitude-Waterproof-Hiking/dp/B00DVDWYU2

At the other end of the scale I like my Danner Mountain Lite IIs, made in Portland Oregon. Handmade, very nice and now horribly expensive, they are no more waterproof than the Hi-Tech Altitude Vs. I paid USD$8.50 for mine brand new/unworn at a thrift shop:
http://www.danner.com/mountain-light-ii-5-brown.html

All the best,

Dan.
26
Muppets Threads! (And Anything Else) / New shoes/boots
« Last post by jags on April 20, 2018, 11:33:58 PM »
Have we any walkers in the house.im lookin g to buy a good pair hiking boots that doesn't cost the earth.I use leather steel toecap boots a t the moment time they got fired iver the nearest ditch .my feet are in agony and shin splints are really bad.anyway enough moaning if anyone knows of a good boot please give me a link.may all your spuds be balls of flower if you can sort me out.
Anto.
27
Thorn General / Re: Handlebar choice?
« Last post by Inbred on April 20, 2018, 08:17:15 PM »
Yikes! I didn't even think of that!
Maybe I should avoid cycling altogether? 😉
I think I presently do a fair mix of walking and cycling.
Probably going to diversify a bit into other activities too, just to be on the safe side!
28
Rohloff Internal Hub Gears / Re: Rohloff Ex-box Maintenance
« Last post by mickeg on April 20, 2018, 07:20:04 PM »
If I should do anything on a transfer arm, it is news to me.  The parts in it only move when I shift gears, that is not a lot of movement or wear.  Also, I would not be surprised if some of the lube oil in the hub got into that transfer arm during use and regular riding. 

I changed the oil in my hub before I went to Iceland.  I suspect that the wheel was in the cargo area with the left side down and I suspect the air pressure changes caused a lot of my lube oil to leak out of the hub, possibly into that transfer arm.  The photo will tell you why I suspect this.  But all last year I never had that mess of oil on my EX box or transfer arm, so I think that lube oil loss in Iceland was a one time event from the airplane.

For comparison, my Sram Dual Drive (a three speed internally geared hub that takes a cassette) was greased at the factory and is only supposed to get a few drops of oil a year.  I put 360 miles on that hub last week.  My point is that it is pretty easy to over-think some of this stuff.  If they do not tell you to maintain it, I am not going to worry about it.

29
Rohloff Internal Hub Gears / Re: Rohloff Ex-box Maintenance
« Last post by Ubert767 on April 20, 2018, 07:04:27 PM »
What are your thoughts on routine maintenance for the Rohloff EX box transfer arm ?

https://www.sjscycles.co.uk/hub-spares/rohloff-ex-transfer-box-8216/

Rob
30
Thorn General / Re: Handlebar choice?
« Last post by Danneaux on April 20, 2018, 05:54:33 PM »
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Cycling is great for building stamina and aerobic fitness but it's pretty rubbish for flexibility or core strength!
<nods> Boy, that's true. Doesn't do much for bone density either as it is not considered weight-bearing exercise. I found myself with osteopoenia -- partly due to cycling as my primary exercise, according to my doc, partly due to celiac sprue disease (gluten intolerance). He advised walks -- preferably with rocks in my pockets or some sort of additional weight carried. I took it to heart and added a daily 8km walk to my regular exercise. That and Vitamin D supplements helped a lot in rebuilding bone density. My original DEXA bone density scan showed a >28% risk of hip fracture; that is now down to about 3%.

I lost the greatest bone density when I was regularly riding 8,000-12,000mi/13,000-19,000km annually.

For more on the topic:
http://www.cyclingweekly.com/fitness/cyclists-bone-health-281573
https://www.trainingpeaks.com/blog/why-cycling-is-bad-for-bone-density-and-how-you-can-improve-it/
https://www.velopress.com/building-strong-bones-for-cyclists/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3554602/

Best,

Dan.
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