12h TT August questions:

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12h TT August questions:

Postby Sylv » Thu Feb 07, 2008 12:01 pm

* Is it on open roads?

* Would you use normal clip-on tri-bars? Does that mean pushing the seat forward? Do you use a profiled helmet?

* Can I realistically be hoping to ride for approx 11h50? Would like to get to 240 miles and to stop the least possible, only to oil chain grab food & drink which would be taken in whilst riding. Rich will you have a helper (Joyce?) and do they hand you musettes/bidons every so often?

12h @ 32.2kmh = 0 stops
11h52"30 @ 32.5kmh = 6 * 1"15 stops
11h45 @ 32.9kmh = 6 * 2"30 stops
11h30 @ 33.6kmh = 10 * 3" stops
11h @ 35.1kmh = 12 * 5" stops
10h30 @ 36.8kmh = 12 * 7"30 stops
10h @ 38.6kmh = 12 * 10" stops
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Re: 12h TT August questions:

Postby George » Thu Feb 07, 2008 12:18 pm

Hey Sylv you starting to get a little twitchy already :lol:

heres a couple of bits of useful information

[url]http://www.abcc.co.uk/Articles/12hrtt.html[/url]

http://www.planet-x-bikes.com/index.php ... _ITEMS=226
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Re: 12h TT August questions:

Postby richv » Thu Feb 07, 2008 12:55 pm

[quote="Sylv"]* Is it on open roads?


Yes. First 80 miles on a dual carriageway thereafter mainly quiet single carriageway roads with some stretches of busier roads and dual carriageway. There are 4 circuits:

Start - busy dual carriageway but it's 5 or 6 in the morning!
Circuit A - from six mile bottom towards Newmarket and then back in a triangular circuit.
Circuit B - a 'circular' circuit north of the A505 around Duxford
Finish - an odd shaped circuit taking in the old A11 and bits of the A505

[quote]* Would you use normal clip-on tri-bars?


Without doubt yes. First 12-hour I rode first 4-hours on TT bike and then 8 hours on road bike with tribars. Next 2 I did 12 hours on TT bike. Make sure tri-bars are tight though it's irritating when they keep slipping :?

[quote]Does that mean pushing the seat forward?


Whatever you're comfortable with. Pushing seat forward opens the leg/body angle up a bit and makes it a bit more comfortable. That's why TT bikes tend to have steep angles for their seat tube as it enables you to get a bit lower at the front. However if the clip on tribars are pretty high already you may not want to push yourself forward and reduce your reach. If you do move saddle adjust height as well as moving it forward will lower it slightly.

[quote]Do you use a profiled helmet?


Yes. How long for depends on comfort. If you're sitting still with head in right position with a good position then an aero helmet will make you quicker. However if you're moving your head around the entire time, uncomfortable or have a poor position the helmet isn't going to do much good.

[quote]* Can I realistically be hoping to ride for approx 11h50? Would like to get to 240 miles and to stop the least possible, only to oil chain grab food & drink which would be taken in whilst riding.


In my 3 12-hours I have ridden for approx 11h57m, 12h05m, and 11h50m. First ride I stopped for a pee once and that was it. Second ride I didn't stop - don't kid yourself it's only a 12-hour race it actually lasts about 5 minutes longer as you have to get to the next timekeeper once your time has expired! Third ride I stopped to replace wheels, replace Paul's spare wheel which I nicked at the first stop and which was as smooth as a dodecagon, and had a pee at the second stop. Probably wouldn't have stopped at all if I hadn't trashed my wheels. Every 3 minutes you are stationary you lose about a mile.

[quote]Rich will you have a helper (Joyce?) and do they hand you musettes/bidons every so often?


Yes several helpers and at least one car, possibly two if I can persuade both brothers to get up at a stupid time in the morning. The ideal would be to have at least 2 helpers and a car per rider. Food and drink passed up without stopping. I don't use musettes just greaseproof paper bags but others do. It is possible to do the race unsupported but not great if you're trying to go for it. When we know who's riding I suggest we get together and work out what supporters we can round up and try and make sure everyone has got some help. There is an outside chance of some championship medals if the 'big guns' don't manage to finish 3 riders for the team prize.


[quote]12h @ 32.2kmh = 0 stops
11h52"30 @ 32.5kmh = 6 * 1"15 stops
11h45 @ 32.9kmh = 6 * 2"30 stops
11h30 @ 33.6kmh = 10 * 3" stops
11h @ 35.1kmh = 12 * 5" stops
10h30 @ 36.8kmh = 12 * 7"30 stops
10h @ 38.6kmh = 12 * 10" stops


Look at the article George suggests which gives a guide. It's not completely helpful as the course changes so much from the first 80-miles to the rest that it has a huge effect on speed for lardy riders like myself. For you Sylv it's probably ok but you may want to go off a bit faster than it suggests.
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Re: 12h TT August questions:

Postby Sylv » Thu Feb 07, 2008 1:15 pm

Thanks a lot all. So, George, you are going to start slowly, as advised, right? :lol:

I've got no 10,25 or 100tt times to base estimates on, but I have done a couple 24h and a 12h mtb so know I can keep going for that long if I feed and drink correctly. The pacing is tricky though.

I remember for the 12h, starting pretty quick and telling myself all the time that I would never be able to keep going at this pace (it's hard to pace yourself too as you are riding team members who can do 1 fast lap then go to bed for a couple hours). I was thinking that I might bonk out half-way, but that at least I would have given everything. In the end it was fine, I even had some energy on the last lap as the sun rose, and was tempted to hammer it, but didn't want to risk hurting myself.

I hadn't done any super-long rides in preparation either, and I know some say shorter rides at higher intensity are just as good training.

Looking forward to it!We should definitely hold a strategic meeting beforehand :)
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Re: 12h TT August questions:

Postby Jon H » Thu Feb 07, 2008 1:30 pm

If you're devising a schedule aiming for a specific distance you definitely need to do the first 80 miles at a faster pace than the rest of the course; the roads are so much faster at the start of the course. Plus you will naturally slow down throughout the day; the ABCC article describes the pacing strategy very well.

Comfort is a big big factor in a 12 hour. Things that are comfortable for a normal ride may be horrendous after 8 or 10 hours. In the one 12 hour that I've done I had back and neck pain from about 9 hours onwards and had to stop every half hour to try and stretch. My shoes became so painful on my big toes that I couldn't get out of the saddle for the last couple of hours - then my toenails went black and fell off. Even if you do a 100m TT, a 12 hour is a big step up - somewhere between 2 and 2-1/2 times as long.
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Re: 12h TT August questions:

Postby Jon H » Thu Feb 07, 2008 1:34 pm

Marco - skinsuit would be the aero choice, but they don't have pockets for food. So most people use shorts and a jersey. If it's chilly use arm warmers in the morning, whip them off and chuck them at your helpers when it warms up. ECCA also provide two numbers, so you can start off with an extra jersey on, or pin one onto a rain jacket if the weather's looking dodgy.
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Re: 12h TT August questions:

Postby Dominic » Thu Feb 07, 2008 5:55 pm

For those that are interested, in about the 2nd week of July there is an audax ride called the Faeries Flattest Possible 300k. It starts in Bethersden, Kent and I think starts at silly o'clock even for hardened TTers (2 or 3am I think).

I am thinking of using this as a sort of fine tuning run for equipment prior to the 12. It starts so early because I think the first part of it is on main roads until dawn, dependent how fast you are going. It sounds to me to be a good type course in that it is flat and my target would be to get round in 12 hours or less. I should have most of equipement type stuff sorted in my preceding events but I don't think that doing something like this could hurt. It is far enough away from the 12 to be fully recovered :D
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Re: 12h TT August questions:

Postby Sylv » Thu Feb 07, 2008 6:45 pm

Another issue with using clip-on tri-bars is that I would constantly be changing position as the gear/brake levers would still be on the drops - sounds like a nightmare. Probably better off borrowing/stealing a proper TTT bike (that or do it on a fixed ...)
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Re: 12h TT August questions:

Postby richv » Thu Feb 07, 2008 8:56 pm

Marco's spot on. After a few hours you'll want to change position often anyway. A proper TT bike would be quicker but you have to be able to stay on it for 12 hours. With a road bike you have a comfortable position available on the top or hoods but with a TT bike you don't have that option and the 'hoods' are often very low with a tri-bar set up.
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Re: 12h TT August questions:

Postby Mike I » Thu Feb 07, 2008 10:03 pm

I won't be able to do this one after all, which is a pity as it sounds as if it might be a bit an ACC outing this year. Still, by reading the article George posted, I can at least brag about what I 'would have' done :wink: .

Somewhere on the graphs you will see the name of one-time champion Longland (who I think still holds the 24 hour trike record :shock: ). Way back in the 1970s, my dad taught him geography, which presumably is why he didn't go off course on such epic rides :) .
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Re: 12h TT August questions:

Postby mrP(Boonen)VT » Fri Feb 08, 2008 9:43 am

Thought I'd wade in here....I don't have the technical data/knowhow, Watts, Joules, Faradays or whatever, but over the years have ridden many 12's with varying degrees of pain, sorry, success.

Firstly, some form of aero bar (I love chocolate :lol: ) is a terrific aid in a 12. When you start, you can get in the "tuck" up and down the dual carriageway and sail along. Then later, when you're feeling tired, can lean on them for a short doze :wink: after all the guy who invented them based them on a comfortable ride in the RAAM.

I have always used my road bike with clip ons as I know it is comfortable enough to sit there for 12 hours whereas my TT position is just about OK for a 100. Am working on that for this year :wink:

I don't think many, if anyone, uses a skinsuit in a 12 as the aero advantage is minimal and the lack of pockets to stuff lardy cake, paste sandwiches and a pizza slice (plus some money for the McDonalds Drive Thru) are invaluable.

240 in your first one is some challenge, but then you have ridden 12 & 24 MTB's before. I'm still trying to make it - after my best last year of 238. I paced myself on heart rate, based on 80% of my max, which I am reliably informed is not the best way , but it meant that the first 4 hours seemed so slow that I felt like I'd just been down to the shops, but the last 4 hours at the same pace were incredibly tough.
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Re: 12h TT August questions:

Postby Snoop Doug » Fri Feb 08, 2008 10:36 am

[quote="mrP(Boonen)VT"]the first 4 hours seemed so slow that I felt like I'd just been down to the shops,


Excellent advice from the Guru.

I had no idea you lived so far from civilisation Guru Paul, 4 hours just to get to the shops eh....? Still - that isolation must be good fer the ole meditation eh wot?
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Re: 12h TT August questions:

Postby mrP(Boonen)VT » Fri Feb 08, 2008 10:55 am

At my speed, it does take 4 hours :roll:
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Re: 12h TT August questions:

Postby huw williams » Fri Feb 08, 2008 1:51 pm

Richard V - do you have any power data available form your distance TTs?
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Re: 12h TT August questions:

Postby Sylv » Fri Feb 08, 2008 1:58 pm

[quote="huw williams"]Richard V - do you have any power data available form your distance TTs?

I have a print out somewhere of my HR over the 24h of Mountain Mayhem 2003.

It keeps creeping down and down continuously even though the speed was more or less constant.

I remember by the end I just couldn't get it over 130 or so, even on the only big climb of the course (I tried cos I was just curious).
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