Looks fiine.

I didnt know Specialized made the Shiv in a kids size though.

Yeah it looks really little in the pic. It is a size small. I am 174cm which I think is 5''8 or 5''9

How much do you want for the medicine ball?

Heh, I think it would be a bit heavy to post.

Who cares what people think....if you feel good, and comfortable go with it!

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Shouldn't the line for the hip angle bisect the bottom bracket? It looks like you've aligned it with your pedal axle.

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CodyBeals.com | Instagram | TikTok
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what program are you using to measure those angles?

Kinovea. Someone on this board suggested it. It's free too.

If comfortable, you could rotate your arms up slightly and maybe work on lowering your head between your shoulders a bit more to help keep the frontal area smal.

Probably the largest undervalued aspect of bike fit is weight distribution on the bike. It surprises me it never really gets addressed despite it's impact on comfort esp. in females. Dan wrote a piece talking about it years ago and it really stuck in my mind as a diamond. As far as I can recall roughly 48% weight on front wheel and 52% back wheel were some numbers he mentioned as an upper limit. What does that mean in terms of angles and positions??...... A good starting point for many is if you draw a line thru' the shoulder joint and elbow joint that line passes cleanly thru' the centre of the headtube.

Now some people, particularly males may cope with a more aggressive aero position so if you can ride that position for 5hrs straight staying on the tribars about 98% of that time with no upper or lower back discomfort great. Otherwise consider my above point.....

FYI for those wondering how you check this, what you need is a calculator, a set of decent bathroom weighing scales and a turbo(indoor trainer).....

1) You weigh turbo (A), you weigh athlete in their kit + their bike (B).
2) Rest front wheel of bike on weighing scales and ensure both tires are same height from floor (you may need to shim under turbo)
3) Athlete gets on bike and in their aero position
4) Look at weight value on scales (Z) and calculate what % of (A+B) it is......

I have never had an issue with any bike fits for athletes after making sure that Z is not > 48%(A+B).
But I'll reiterate.... if you can ride that position for 5hrs straight staying on the tribars about 98% of that time with no upper or lower back discomfort great.

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David T-D
http://www.tilburydavis.com

I have been thinking about angling the bars upwards very slightly. I might give it a try. My head tends on slump down a little more between my shoulders when I settle.

Interesting stuff, thanks. I have wondered about weight distribution. I have found that when in the aero position, having more weight on the front of the bike, thus having my weight over my forearms and not over the perineal area tends to be more comfortable, but when I was on my road bike I preferred to have my weight supported more by my sit bones than arms.

Hi, thanks for the post in other Shiv thread.

I'm The same height as you and potentially could have the same fit measurements.

What's your stack now with the pro missiles?
Looks like you are at or close to lowest setting stem and so may be at lower limit of stack for the small?

Thanks

Using a spirit level from the center of the bb and measuring straight up/down from the level to the armrests I am getting about 580mm. Also, this stem is one of the variable angle ones. I am currently at -8 degrees but it can go to -16 which gives quite a bit of extra drop. IIR, these bars have about 4-4.5cm more drop/less stack than the stock specialized ones. They also have a couple more cm reach than the stock ones in their forward-most position.
Happy to take other measurements if this helps you.

Thanks.
Perfect so, did you chose missiles as they provide lowest stack options or just personal choice.
I guess it's more the stem that enables this anyway - which do you have?

I would be interested to know your current reach now from centre of BB to arm pad using same method of spirit level.

I'm currently at 470mm and suspect we may have v similar fit so this is ideal.
Much appreciated.

Reach is roughly 435mm from bb center to edge of armrest another 35-40mm to the center of the armrest so a total of 470(ish) center to center. This is using the stock 90mm stem. The stock stem comes with shims that allow you to change its angle from -8 to -16 (or might be -18) so using the standard stem I could lower and lengthen the front just by swapping the shim.

I had a short list of bars that I wanted because they all had low stack. My list was the Pro Missile (not the Evo which has more stack), the Easton Attack (preferably the newer model which uses collets to retain the extensions like the Missiles as opposed to the older model which does not have adjustable or swappable extensions), or the Felt Devox/Bayonet bars which also have a very low stack. The Missiles just happened to be the ones that came up at the right price while I was looking. They are very nice bars and I am very happy with them.

Good luck with your fit and let me know if there is any more info I can help you with.

Thanks,
I wasn't aware the standard stem has some adjustment. Good to know.
I also thought the clamping mechanism meant if changing aero bars then you would need to change stems also?
So are you running the standard stem with Missile Aerobars?

Yep, standard stem with missile aerobars. The ones with the carbon bars require the integrated stem but the ones with alloy bars like the Comp just use a standard stem.