Login required to started new threads

Login required to post replies

Prev Next
Re: Aero geeks, rip this apart... [phog] [ In reply to ]
Quote | Reply
I hadn't thought of that actually, I'd be interested to know if they are legal or not to be worn during the swim (ITU+wetsuit.) If putting on in T1 then I race Olympic distance so time benefit would be outweighed by slow T1. But I'll look into it, thanks!

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
One thing to consider with the BTA is that if you have a straw you won't need to break aero to drink, possibly outweighing any penalty from the bottle/straw assembly vs the bottle behind the seat.
Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Hi Ian, do you mind me asking what extensions do you have? I like the angle, what is that about 30 or 35 degree? I thought from the picture they didn't look much like carbon, so wondered if they were the USE Tula extensions. I've also been looking at the PDQ extensions from Ian Cammish, but they are 25 degree only.

Cheers, good luck with your race season.
Quote Reply
Re: Aero geeks, rip this apart... [knighty76] [ In reply to ]
Quote | Reply
knighty76 wrote:
Hi Ian, do you mind me asking what extensions do you have? I like the angle, what is that about 30 or 35 degree? I thought from the picture they didn't look much like carbon, so wondered if they were the USE Tula extensions. I've also been looking at the PDQ extensions from Ian Cammish, but they are 25 degree only.

Cheers, good luck with your race season.


Not at all, they are use tula alloy's with a 50deg angle. But the rise from flat is lessened as they are turned in as you can see from the front end picture.

Always happy to discuss and give honest opinions on my kit choices, just don't want to display any branding unless there is a reason to.

The PDQ's are the same bar I have, the link below is a me running the extensions with the same bar set up (Note its to my FB page so don't click if you don't want to visit, It's just to save me from re-uploading the photo - not intended for clickbait.)

https://www.facebook.com/.../?type=3&theater

I had the original extensions turned in the same amount as the current ones and they were very flat.

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Last edited by: Iain Gillam: May 11, 15 4:19
Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Cheers Ian, appreciate the reply.
Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Holy thread resurrection!

So I finally have some ok photos with me actually riding the bike with my helmet on etc.

Ignoring kit set up for the minute (it was a baseline test, I'm going to test a range of items over the coming races before settling on a final clothing/ nutrition set-up.) How bad is the position?

I have two things in mind I need to do straight away, but I'll see if anyone else thinks the same before muddying the waters with my thoughts. As well as those things, my head is much higher than the first post, I think it's lower in the 2nd image than in the 1st (side on) but I do struggle to see out of it with me head in a low position.





Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Last edited by: Iain Gillam: Jul 17, 15 7:55
Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
if you could tweak the mount a little, a Torhans 30 - installed very close to the head tube - would yield an improvement. It's worth pursuing, if only as a legal fairing.
Last edited by: davetallo: Jul 17, 15 8:59
Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Iain Gillam wrote:
Holy thread resurrection!

So I finally have some ok photos with me actually riding the bike with my helmet on etc.

Ignoring kit set up for the minute (it was a baseline test, I'm going to test a range of items over the coming races before settling on a final clothing/ nutrition set-up.) How bad is the position?

I have two things in mind I need to do straight away, but I'll see if anyone else thinks the same before muddying the waters with my thoughts. As well as those things, my head is much higher than the first post, I think it's lower in the 2nd image than in the 1st (side on) but I do struggle to see out of it with me head in a low position.





Iain

Very good. You've accomplished pretty much everything you can without testing or upgrading to a faster frame.
Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
How bad is the position?

You look good. Any CdA testing?

What frame is that?

Also, if you wanted, you could mount a bottle just under and between your arms. It would persuade the air to flow around your stem and pad area. Only guessing that it might be a tad more aero, and at any rate it's convenient.
Last edited by: rruff: Jul 17, 15 9:14
Quote Reply
Re: Aero geeks, rip this apart... [Nick B] [ In reply to ]
Quote | Reply
Nick B wrote:
Very good. You've accomplished pretty much everything you can without testing or upgrading to a faster frame.

Thank you!

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [rruff] [ In reply to ]
Quote | Reply
rruff wrote:
How bad is the position?

You look good. Any CdA testing?

What frame is that?

Also, if you wanted, you could mount a bottle just under and between your arms. It would persuade the air to flow around your stem and pad area. Only guessing that it might be a tad more aero, and at any rate it's convenient.

Thank you! You people are clearly all too nice!

No cda testing, I hate to say it but I don't have time. I've done no proper aero stuff (tunnel) either - I should have done but I wasted my money on kit when I was more naive and now don't want to spend the cash. I generally have just looked to lower frontal area and get rid of anything that isn't likely to benefit drag reduction.

Frame is an old (2011) blue triad.

I have tried the bottle at a previous race, even had a custom solution with a straw on a regular bottle. But I couldn't actually get to it and it shifted my arms a bit forcing me to keep shuffling on the bars so I ditched it.

My next move nutrition wise is to get rid of the bottle all together. I only race olympics and think I can get away without if I go fast enough. As an added bonus I will be able to concentrate on staying in the position for more of the bike split and not have the drop in power when I go to grab the drink.

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [davetallo] [ In reply to ]
Quote | Reply
davetallo wrote:
if you could tweak the mount a little, a Torhans 30 - installed very close to the head tube - would yield an improvement. It's worth pursuing, if only as a legal fairing.

I think I'd struggle to get it close with the cable for the brake and my bars are a way away from the head-tube. If I got one and modded it I think I would struggle to get it to work without it being essentially a fairing which I'm sure isn't allowed.

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Wow looks good. It's probably actually good but no way to know for sure without testing. Can you see up the road?! I would not be able to in that position.
Quote Reply
Re: Aero geeks, rip this apart... [Dilbert] [ In reply to ]
Quote | Reply
Dilbert wrote:
Wow looks good. It's probably actually good but no way to know for sure without testing. Can you see up the road?! I would not be able to in that position.

It's a bit of a challenge and I'd like to be able to get my head lower but I'm sort of looking right at the top of the visor as it is. Most of my races are or will be on closed roads though so not too much of a worry.

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
As no one has mentioned anything similar - my first thoughts were to bring the saddle back. My logic was I could rotate my pelvis fwd more to reduce the steepness of my lower back and combined with a slight increase in length drop my whole torso down a bit.

From the frontal picture, the widest point are the edges of my shoulders. I can bring them in with a shrug but that's hard to maintain for me whilst going full gas. I also think having the arm pads so narrow is probably increasing the width of my shoulders so I was going to open them out just a touch. As well as this I was thinking of rotating the extensions a little more outwards to get my hands a touch higher.

Is this logic flawed and should I just leave it alone or is there merit to this?

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Looks like you're doing something right - #1. Bike split at the weekend. Bravo!

-------------------------------
´Get the most aero and light bike you can get. With the aero advantage you can be saving minutes and with the weight advantage you can be saving seconds. In a race against the clock both matter.´

BMANX
Quote Reply
Re: Aero geeks, rip this apart... [Barchettaman] [ In reply to ]
Quote | Reply
Thank you! Unfortunately like the rest of the race it was a long way from the speed I was looking for, but I am a bit down on power currently.

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Hello Iam Gilliam,


You can get your head down (and see ahead) for a nice speed gain by using our View-Speed Cyclops glasses.

Try them and return them (full refund) if they do not help you.

Wind tunnel tested and raced to good effect.





If you order please note your dominant eye.

PM me if you have any questions.

http://www.view-speed.com

.

Cheers, Neal

+1 mph Faster
Quote Reply
Re: Aero geeks, rip this apart... [nealhe] [ In reply to ]
Quote | Reply
I was able to find several cheaper options for prismed glasses. I was thinking if you have your head down, not much need for glasses to block wind. Some really neat dual prism options out there primary design for belaying (rock climbing). A couple of them can fit over glasses and some sunglasses.

http://cubelayglasses.co.uk/
http://www.belayspecs.com/
http://www.yy-belayglasses.com/
http://www.belaggles.com/

Or the superduper cheap china version:
http://www.aliexpress.com/item/Upright-Of-Prism-Glasses-For-Climbing-And-Outerdoor-Activity/1754476049.html
Last edited by: Pantelones: Jul 18, 15 0:12
Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Ian,

Am I right in thinking that you have relatively long legs compared to torso? If so, do you think this adversely affects the cda you can achieve. What sort of times do you do for 25TTs at 380w? I just ask as my cda seems high despite lots of testing and wondered if the long legs exposed to the wind were a problem. If so, the dropping the saddle might help as long as it doesn't drop power.

P.S. Great bike split in Geneva, you're clearly not doing much wrong on the bike :-) Maybe my long legs are not the problem.
Last edited by: Nobbie: Jul 18, 15 0:16
Quote Reply
Re: Aero geeks, rip this apart... [Nobbie] [ In reply to ]
Quote | Reply
Yes I am a bit, but I'm also generally just tall 6'5". I think in general it's not good being tall for anything in triathlon! With longer legs you have a bigger frontal area which you can't do much about really. I've got my saddle quite low as it is, I used bikefastfit and got it at as low as I could whilst keeping the knee angle parameters within the guide. I've also got the cleats as far back as they go so more centered in the foot which allowed my to drop it a bit more. It seems ok powerwise.

As for times I think I'm not aero really as my times are slow for the power. The split the pictures were from was 57.02. The course wasn't stunningly fast and I didn't have my PM on but I wasn't at 380W. I'm sure of that! My PB is 380 (from last year) this years best was 368W and I'm below that now. Next block of training is bike focused to hopefully get back up to 380 and hopefully a good chunk past that.

But yeah low saddle should lower frontal area therefore lower cda, advantage of being tall is you should crank out more power so perhaps one can afford to loose some for a drop in cda. I've not gone that far but might be worth testing out.

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
Thanks for that Ian, I've got time to test, so may try dropping the saddle 30mm just to see what effect it has. At least long legs are good for the run.
Quote Reply
Re: Aero geeks, rip this apart... [Nobbie] [ In reply to ]
Quote | Reply
No worries, as an aside the run is where I think being tall looses you the most just from the weight disadvantage really!

Iain

Training Full Time in 2015: http://www.triopensource.com
http://www.facebook.com/iaingillamracing http://www.twitter.com/iaingillam
https://www.youtube.com/...9JYCrOLP34Qtgp5w1WsA

Quote Reply
Re: Aero geeks, rip this apart... [Iain Gillam] [ In reply to ]
Quote | Reply
If I recall, John Cobb had an article here or somewhere about hand position. I think he said that something is minimal and pronating your hands and thumbs a bit, changes the air flow over your forearms and under and around the chest to reduce CdA. (That might give room for something short BTA like one of the TorHans.

I believe he also said that having elbows to narrow keeps the air from flowing smoothly out from the elbows around the hips.

Try PMing him to look at the thread.

_________________
Dick

Take everything I say with a grain of salt. I know nothing.
Quote Reply
Re: Aero geeks, rip this apart... [nealhe] [ In reply to ]
Quote | Reply
What is happening with the Mono-T hydration?

_________________
Dick

Take everything I say with a grain of salt. I know nothing.
Quote Reply

Prev Next