Sunday 26 April 2015

Two of the 100 Greatest Climbs #19 - Kidds Hill/The Wall and #115 - Ashdown Forest in a day

Easter 2015

I have been trying to tick off some more of the climbs in both the first and second 100 Greatest Cycling Climbs books and due to a few "unofficial cycling holidays" in the last year have made some headway. There's been good progress in the Lake District and a toe in the water in Yorkshire. In addition there's a surprising number in the South East of England that are ridable from my parents house in north west Kent.

The next two in the south east that I was going to approach were #19 (The Wall) and #115 (Ashdown Forest). I had plotted a route to these from my parents a number of months ago, but this was a round trip of nearly 80 miles. 80 miles in early April is still quite a big time commitment (especially when I am meant to be visiting my parents and not spending half the day cycling!). In addition its surprising how hilly the Wealds and Downs of Kent, Surrey & Sussex can be, so it was not just the distance but the likelihood of ~60-70ft/mile or more of ascent as well.

The compromise was therefore to drive to Shoreham (Kent) and this got the distance down to 50 miles or about 3 hours of riding - a lot more socially acceptable. I modified the original route (using the Strava route planner now) to make a shorter one and duly set off.

Here's the route which shows both the "bigger" climbs but also that there are no flat bits:

It was initially a few miles of familiar roads to Sevenoaks then a new route through the town centre and beyond. As it was all new to me from Sevenoaks I really just followed the route on the Garmin without paying a lot of attention. The route was predominantly south to Groombridge with quite a lot of rolling climbing - including one quite long drag (that turned out later to be a Strava Cat 4 I found). At the top of this climb I almost caught another cyclist that I'd been following and was faster who swung off to the right to obviously catch up with his riding partner who was already at the top. Unfortunately he had a clipless moment just as I reached them both! As I turned out of Groombridge I started on a long ascent past a sign saying "Welcome to the Ashdown Forest". This climb was a long steady ride over a reasonable distance - but never really steep.

At the top I turned sharp right almost back on myself at the top of the Forest and saw lots of other cyclists so guessed that I was close to The Wall. As I continued a few yards further on I saw more cyclists coming from a road on the left in low gears looking slow and assumed that this was the climb - however my Garmin route made no indication that I should turn - and I rarely plot a route of the length I was riding that day where part of it would be an up/down detour from the route. I stopped in the car park at the junction and looked at the Garmin more carefully and from the depths of my memory thought that the book also called The Wall Kidds Hill as well - so I took a flier and started to ride down the hill. The fact that there were 20 or so cyclists riding towards me gave me a level of confidence that I was probably correct and that the worst case was I had just added a couple of miles and some climbing to the route. It was a fast but bumpy descent and I rode all the way down until it started to climb up again, and at this point did a U-turn and started back up.

The first landmark on the climb was a ford to the left (and the book mentions that the climb starts from here). The gradient gradually steepened for a while but I was able to hang on in the 34-25 (leaving 1 gear left for a while). The road then drifted round to the left before pointing dead straight up to the top. Its clear here why its called the "The Wall" - although not excessively steep being dead straight all you can see is tarmac to the top. The gradient was fairly consistent all the way - a few areas where it briefly eased before reverting to the average. It was just a case of grinding out the climb (and I needed the 34-28 lowest gear) all the way to the top. A dead straight climb like The Wall is both hard and easy - its hard because there's no relief - just keep straight on and the top looms over you - but easy because you know where the top is and you're not caught out by blind summits and summits round the next corner. Interestingly whilst the climb had been swarming with cyclist when I first reached the top and started the descent - once I started up myself I saw no other cyclists at all  - either descending or climbing.

I had my Garmin Virb with me and started the camera on the descent, here's the video.



For reasons I am not sure about this time the camera did not store any GPS related data - so this is just a video of my descent and climb.

At the top I took a few minutes break in the car park again to have something to eat and a gel, and read the information board about this part of the Forest and its use in the Winnie the Pooh stories before setting off back. Again the route was good (I have been generally lucky selecting roads less well used by cars for areas that I don't know) and I rode generally northwards.

With signs showing Ide Hill was a few miles to go I was passed by another cyclist. A short acknowledgement and he rode away from me at a slightly higher speed. I thought I might be able to keep up but I knew there was still a fair way to go and, given the rolling nature of the area, quite a bit of climbing left including Ide Hill. He slowly rode away (although not quite as quickly on the upwards parts) and a few miles later I was back on the road I recognised at the bottom of Ide Hill.

I've descended and climbed this several times now and know its just about pacing. It's not massively steep or long but it needs to be approached sensibly. I dropped onto the 34 front ring immediately (even though it was not steep where I joined just to up the cadence and lower the effort before it got steeper.

I could still see the other rider still ahead but I seemed to be slowly catching him. As the climb continued I realised that I was actually going a lot quicker than he was and was going to easily catch him - which I did. As I (literally) cruised up behind I could see he was on a very expensive bike (with Di2 of some sort) and in head-to-toe Rapha. That made the catch all the sweeter! However catching is one thing and passing another and I just sucked his wheel all the way to the top just to be irritating. He didn't acknowledge my friendly greeting when I caught him either!

I had put my Garmin Virb on for the Ide Hill Ascent as well so here's the video:



Once at the top of Ide Hill its then a fast downhill to Sevenoaks and a relatively short ride back to Shoreham.

The ride was 49.9 miles with 4500ft of climbing (so almost 100ft/mile) and 3hrs12mins duration at 15.5mph average. I was happy with that. A good ride.

When I got back and uploaded the route I realised that the planned route was actually for #115 Ashdown Forest and did not include The Wall. It shows I need to pay more attention next time - I got the climb I planned but did not know I was doing, and added a second climb in by chance that I thought I was meant to be doing in the first place!

I have updated the summary of my climbs progress here: http://midlandscyclist.blogspot.co.uk/p/100-gr.html

Sunday 12 April 2015

Upgrade of my Home Made Chain Whip

I have a chain whip (all cyclists need one). Actually the chain whip was my father's, who made it probably 60 years or so ago. Its made from a bit of chain (an old single speed I'd guess as my Dad rode single speed fixed for a long time) and a piece of modified steel bar.

The bar has been filed (or heated and hammered) thinner with a piece of chain attached. This works fine. However its quite hard to hold the bar straight on the cassette and there is always a risk of the bar slipping into the spokes, so I thought I would upgrade it to match the more modern designs with the second length of chain. Fortunately I also had an old (but unused) chain that I could use.

I filed the bar thin enough to allow the chain to fit over. I then found a slim screw (actually an electrical socket screw I think) to fit through the chain rivet holes and the bar, and then bashed over the end of the screw to peen it over and hold it in position.

A total of around 20 minutes work and the outcome was an improved (easier to use) chain whip:


The modified whip. Original chain is on the left and the newly added piece is on the right


The Chain Whip in use


The Chain Whip in use
Note my exemplary behaviour wearing PPE - overalls and steel toecap shoes. I even use disposable plastic gloves as well!

Friday 10 April 2015

Short or Medium Cage Shimano 105 5700 Rear Mech for 30T Cassette?

Updated 12 April2015

Do you need a medium or long cage rear mech to run a 30T Cassette? This was the question I asked myself recently. We're going to the French Alps for our Summer Holiday this year. Whilst I hope to be properly bike fit I am really keen to make sure that I can ride all the climbs - including the difficult ones like Mont Ventoux - without running out of energy and failing.

I normally run a 11-28T cassette with a compact chain set (as I am old!). Until last year I had never failed to get up anything using this gearing - although I failed on Hardknott Pass. I saw that as an aberration but  recently (March 2015) I failed again on Rosedale Chimney and Boltby Bank. Whilst these three climbs are special cases with very steep sections it just shows that if I'm over geared I know I am lining myself up for a failure. The climbs in the French Alps are quite different in that the gradients don't reach over 25% but the challenge is in the length - which can be 20km in some cases.

I was not as worried about the gradient but more about the duration - for example I am estimating 2 hours for Mont Ventoux. The backup plan was therefore to lower the gearing and the option was a 30T cassette. However 28T is the biggest for 105 (5700), and so the option is Ultegra where a 12-30 is available. Until last year the word "Ultegra" would mean a non-starter on cost grounds. What has changed is the introduction of Ultegra 6800 and 105 5800 ranges - i.e. 11spd. This has meant that Ultegra 6700 (10spd) is now more affordable (although not cheap). So I ordered a 12-30T Ultegra 10spd cassette.

The next challenge was whether or not my 105 5700 rear dérailleur (short cage) was up to the job of managing an 18 tooth difference across the cassette (although only 1 more than needed for an 11-28). I do have a spare medium cage 105 5700 rear dérailleur so if the short cage would not work I had a fall back plan.

The voice of the internet on the question of short or medium cage is fairly evenly split between short cage so the only way to really see was to try it.

First I photographed the 11-28 cassette on 28T in both the 34 and 50 chain rings:


34-28

50-28

This set up has worked very will for me for many 1000's miles so I am fully satisfied with it.

I then removed the 11-28 cassette and fitted the 12-30. The biggest issue is probably the big-big combination here:

50-34T
In big-big the dérailleur is on the limit and I would not use it. I occasionally use the big-big with the 28T cassette but only for a few meters at a time as the chainline is poor. It shows that with the 30T cassette I need to make sure I never go lower than the 2nd gear.

In small-big (the one I want for the Alps) it actually looks OK. In this picture I have adjusted the B Screw by about 3 full turns tighter to pull the jockey wheels away from the cassette and after this all was fine. The photo does not show it but these few turns made all the difference


34-30T (B Screw tightened)

Having fitted the 12-30 cassette all gears can be selected smoothly and without snatching or slipping, when using the work stand. This includes front ring shifting both up and down in all the most likely combinations of gears on the cassette.

This gives me a lot of confidence that all will be fine. I might be at the limit but as long as I am careful I see no issues.

 Image result for warning sign images
The next steps is to actually ride it on the road - so all this review can say at the moment is that all is fine on a work stand. I'll report back when I have ridden it.

Updated 12 April 2015 - I have ridden the bike a few miles and can report all is well. More miles needed but I think all OK - just don't select big-big.

The good thing about this is I can fit the 12-30 before I go to France and then if its not as hard as I thought I can refit the 11-28 while I am there. I only need take the cassette lock ring tool and a chain whip