Your TT position - pics

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Your TT position - pics

Postby Jeff Jones » Mon Apr 12, 2010 15:23 pm

Starting a new topic for this one.

celbianchi wrote:go on - I'm game for a bit of postion tweaking. Photo taken 2 weeks ago on second lap of a hilly 23. The meteor helmet is new this season, I must see about getting it closer to my back - looks unaero to me, though could just have been head position at the time. I think it needs to rotate back a bit.

Anyhow - position has not been tweaked for a while and in terms of standard distance saw me get a 21'12 in a 10 last season (levens) and a 56'26 25 (M2510). Last season was first at tt'ing though have road raced for a few years). I usually finish between 6th and 10th in most Open north eastern events.
FTP on my road bike is 290.

Oh - weight is around 73kg, 5'9 tall

Fill yer boots with constructive positional advice - especially Jeff who is a bit brisk himself.

Image


Front on shots are good for this sort of stuff.

Your position isn't bad but it needs a bit of work, especially your helmet/head position. Helmet needs to be flatter against your back and your head/torso could go down a bit, subject to you being able to still put out the power. Ditto your elbows could come in, although not too much.

Wouter Sybrandy has it sorted:
Image

I find the Bell Meteor needs a lot of tweaking to sit flat on your back, e.g. two weeks ago I had it right
Image

But last Saturday I was in too much of a hurry and it was pointing up too much at the back and moving around a lot. Not that it would have made 2+min difference - it's the principle of the matter!
Image

15min of adjusting the straps and a bit of tape has it nice and snug now.
Last edited by Jeff Jones on Wed Feb 23, 2011 14:52 pm, edited 3 times in total.
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Postby celbianchi » Mon Apr 12, 2010 15:48 pm

Thanks Jeff - I will have a look at the helmet.

I might think about changing the bars as they are what came with the bike when I bought it (profile design T2). They are set as close to the stem as I can get them.
I have one more spacer under the stem I can drop the front end. A longer stem also maybe?

I'm aiming for a mid 20 for a ten on a decent course this season so any watts for free are most welcome.
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Postby sub55 » Mon Apr 12, 2010 19:00 pm

the position i always wanted to emulate
Image[/img]
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Postby sub55 » Mon Apr 12, 2010 19:03 pm

and me with out the disc
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Postby Airwave » Mon Apr 12, 2010 22:19 pm

sub55 wrote:the position i always wanted to emulate
Image[/img]

Is that Eamon Deane?
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Postby sub55 » Mon Apr 12, 2010 22:37 pm

Airwave wrote:
sub55 wrote:the position i always wanted to emulate
Image[/img]

Is that Eamon Deane?


yes in the 24h
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Postby Mog Uk » Tue Apr 13, 2010 08:37 am

Jeff,

What did you make the visor from for your Meteor ?

I got one from Bob Heath Visors but because the helmet sits far back on my head ( to get the fit right ) the visor isn't deep enough! That one on your photos looks spot on.

Cheers.....
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Postby SteveR_100Milers » Tue Apr 13, 2010 08:54 am

From last year:

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Postby Jeff Jones » Tue Apr 13, 2010 11:04 am

Mog Uk wrote:Jeff,

What did you make the visor from for your Meteor ?

I got one from Bob Heath Visors but because the helmet sits far back on my head ( to get the fit right ) the visor isn't deep enough! That one on your photos looks spot on.

Cheers.....

I got one from a guy on the timetrialling.co.uk forum, who made a batch of them and sold them. He didn't do it to make money and AFAIK isn't making any more.

I guess you could make your own with the right perspex?

nmcgann wrote:Just over 6ft 1in, 11st-ish. My avatar on a thread on the TT board has a pic of me racing http://www.timetriallingforum.co.uk/ind ... =44329&hl=

I don't look particularly un-aero, but I am. I've narrowed my elbows a bit over the winter, I don't know if that has helped yet.

No you don't look it, although front-on would tell more of the story. You're only an inch taller than me and the same weight so we shouldn't be vastly different. I have my elbows further back than you, and my knees go inwards over the top tube.

Tried tiliting your bars up slightly?
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Postby SBezza » Tue Apr 13, 2010 11:32 am

Here is one of me from a New Years Day 10.

Image

As Jeff has said still need to sort out the helmet 100%, or possibly get a better fitting helmet.
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Postby celbianchi » Tue Apr 13, 2010 13:49 pm

SBezza wrote:Here is one of me from a New Years Day 10.

Image

As Jeff has said still need to sort out the helmet 100%, or possibly get a better fitting helmet.


I was fiddling with my helmet last night (quiet at the back there!). I put the meteor II on, played with the straps for a bit, then kind of held the tail and pulled it downards towards my back, there was a ratchety type noise like when you pull a cable tie through, and then when I got on the bike - it was pretty much flat down against my back, hopefully it will stay there when riding at race intensity. However, I could see no ratchety type plastic inside the lid that would lead to this.
Maybe I've broken it!
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Postby Jeff Jones » Tue Apr 13, 2010 16:06 pm

sub55: spot on!

SteveR_100Milers: as others have said, you are making life harder for yourself with extra weight. Shedding a bit should enable you to get your elbows a bit narrower (subject to you being able to breathe ok). Alternatively, you could go wider with your forearms but aim to keep shadowing your thighs.

Big shoulders are of no help in a TT, unfortunately.

SBezza: you look cold :) Besides the helmet, have you tried a slightly upward bar tilt? And dropping the stem a little?
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Postby SBezza » Tue Apr 13, 2010 16:22 pm

Jeff Jones wrote:SBezza: you look cold :) Besides the helmet, have you tried a slightly upward bar tilt? And dropping the stem a little?


Not tried the bars tilted upwards, they are actually parallel to the ground though they don't look like it in that pic.

With regards to the stem, I have an adjustable one fitted, that is down as far as it will go. I could get a longer adjustable stem which would allow me to get slightly lower, and slightly longer, but other than that it is a new frame.

The frame is perhaps slightly too big for me, but until I get one that is a better fit, it will have to do.
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Postby Jeff Jones » Tue Apr 13, 2010 16:29 pm

I was just thinking you had fairly short upper arms so tilting the bars may help. Not praying mantis but more Leipheimer style.

You have a power meter don't you? You could maybe test this with some roll down tests.
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Postby SBezza » Tue Apr 13, 2010 16:36 pm

Ah I see what you mean Jeff, I could do a few tests. No I don't have a PM yet, hopefully at the end of the year though :)
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Postby Jeff Jones » Tue Apr 13, 2010 16:43 pm

Actually roll down tests don't even require a power meter :) Just an accurate stopwatch.
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Postby celbianchi » Tue Apr 13, 2010 17:55 pm

I am going to tinker for a club 10 tomorrow night. The orbea Ora I use has two saddle positions, in the pic above it is on the 'Chron' position, that is the furthest back. I am going to move it onto the 'Tri' position which is about an iunch forward and if I have read the orbea stuff right increases the seat tube angle to around 78 degrees from 74ish. I will pop the saddle height up a fraction to compensate.
I am riding the same 10 course as I rode on Sunday so we'll see how it goes.
Oh - and I have taken the bottom spacer off below the stem so I'm right down at the lowest height.
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Postby markos1963 » Tue Apr 13, 2010 20:21 pm

Image


Not in the same leauge as the others but I would be grateful for a few pointers. I DO know I have to loose some weight. and I only have access to this bike for the moment for TTing.

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Postby sub55 » Tue Apr 13, 2010 20:33 pm

Jeff Jones wrote:sub55: spot on!

thanks jeff, but it cant be that good because the last time we met ,you stuffed me for 3 mins down the bank .
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Postby sub55 » Tue Apr 13, 2010 20:38 pm

here`s an interesting one, 2 blokes going around the same roundabout in the same event , but ones abit quicker than the other, an you guess who?

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