Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Fri Dec 15, 2017 3:50 am

All times are UTC+01:00





Post new topic  Reply to topic  [ 14 posts ] 
Author Message
PostPosted: Wed Aug 30, 2017 4:07 pm 
Offline

Joined: Wed Aug 30, 2017 4:01 pm
Posts: 4
Hi all,

After a great deal of searching and not a lot of finding it seems that most bike manufacturers are a bit cagey about publishing the frame weights of their supposed rapid TT bikes.

I compete at age group/elite level in 70.3 and IM distance triathlon and am fancying building up a super light TT build for next season.

My plan has a few constraints;

- I want to use SRAM Red etap wifli
- The bike will be fitted with Zipp 808s/ Super9 disc
- Need to keep my Cobb fifty five saddle

Everything other than that is up for lightest wins.

I ideally want the whole thing under 7.5kgs with the 808s on so that needs the frame + forks to come in under 1250-1300gs.

So far I've had a look at the Argon E119 and E117 which seem to be the only ones that come near.

My question is, with a fastforward style seatpost and stem with the required drop to mimic my current TT position, might a road frame be the best approach to get as light as possible.

Thoughts on a postcard.
Cheers
Tom


Top
   
Posted: Wed Aug 30, 2017 4:07 pm 


Top
   
 
PostPosted: Wed Aug 30, 2017 7:53 pm 
Offline

Joined: Thu Mar 08, 2012 11:43 pm
Posts: 3332
Obviously a road frame would be the lightest option, but how much of what makes a good TT bike do you want to sacrifice just so it can be a bit lighter? A TT bike is by definition for competition, so don't you want it to be as fast as possible and light, instead of light at the expense of all else?

That said, yes Argon are a good call, the 117+ should build lighter than the 119+. Or if you can get hold of a 2015/16 Cannondale Slice Hi-Mod frame it's lighter still.


Top
   
PostPosted: Wed Aug 30, 2017 8:11 pm 
Offline

Joined: Tue Aug 12, 2014 3:50 pm
Posts: 1061
Location: FIN
BH is obvious choice for light TT frame. Other choice would be NeilPryde Nazare with reversible post, then tt cockpit. Frame is below 1000g.

_________________
Go to Heaven for the climate, Hell for the company.
Mark Twain


I can be wrong, and have plenty of examples for that ;)


Top
   
PostPosted: Wed Aug 30, 2017 9:01 pm 
Offline

Joined: Thu Mar 08, 2012 11:43 pm
Posts: 3332
stormur wrote:
BH is obvious choice for light TT frame.

Except there's a big warning on BHs website about it not having enough clearance for his wheels...


Top
   
PostPosted: Thu Aug 31, 2017 7:45 am 
Offline

Joined: Mon Aug 29, 2016 11:19 am
Posts: 406
Cervelo S5 frame?

/a


Top
   
PostPosted: Thu Aug 31, 2017 9:05 am 
Offline

Joined: Wed Aug 30, 2017 4:01 pm
Posts: 4
I just wondered how much of a tangible difference you'd see from a properly set up road bike framed TT bike vs a tt bike framed tt bike. Same rider, same position.

Most of the races I tend to enter are hillier... purely because I do better on a hillier course than a flat one when compared to some of the big engines in triathlon. Ironman Wales for example. It's much nicer to ride that bike course on a road bike because the constant ups and downs but a light tt bike might be perfect.

anyone know how much the giant trinity frame weighs?

Cheers for all of your input though guys. I'll take a look at that slice hi mod frame you mentioned.


Top
   
PostPosted: Thu Aug 31, 2017 2:29 pm 
Offline
User avatar

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 8509
Location: Los Feliz, Los Angeles, California
Lightweight makes a TT frameset ?!

Link please.

_________________
Exp001 || Other projects in the works.


Top
   
PostPosted: Thu Aug 31, 2017 2:37 pm 
Offline

Joined: Wed Aug 10, 2016 6:05 pm
Posts: 72
tomcooling25 wrote:
I just wondered how much of a tangible difference you'd see from a properly set up road bike framed TT bike vs a tt bike framed tt bike. Same rider, same position.


I have a spare road frame I have contemplated doing this with. Position is always the most important thing so I may test that out this year. I would go with drop bars as opposed to a full TT base bar so I could use the bike as an actual spare. Plus this gives me a chance to test out my hand a painting one as well :lol:


Top
   
PostPosted: Thu Aug 31, 2017 3:30 pm 
Offline

Joined: Wed Feb 18, 2009 12:02 pm
Posts: 753
I've also thought about the topic a bit and have ridden both TT and "converted" road bike frames.

Re using a "converted" road bike frame: I wouldn't do it. The front center (distance from BB to front axle) is shorter on a road bike than on a TT bike. If you keep the same position, you would put more weight on the front wheel. TT bikes are usually also built to steer slower and go better in a straight line, which you would sacrifice - your setup would be twitchier.

Re light setup: two frames that seem lightish are the Quintana Roo PR6 and the Parlee TTIR Disc (claimed 1200g frame weight). I am attracted by the TTIR Disc, because of the convenience of disc brakes vis-à-vis integrated rim brakes. For example, I currently ride a Trek Speed Concept and avoid changing wheels at all cost because the rear brake is a complete b**** to adjust. Disc would make that way more convenient. Plus the benefits of braking better, which can be interesting on hilly courses.

A thought for you: if you want to go light, don't stick to the 808 and Super 9 disc: for example, the Citec Ultra disc is a whooping 250g lighter (1075 Super 9 clincher vs 825g), their 8000 Ultra front wheel is another 160g lighter. Both very under rated products imho, but technologically interesting and good for real world use.

Have fun with your project and share what you settled on!

_________________
----
No longer in the industry


Top
   
PostPosted: Thu Aug 31, 2017 3:38 pm 
Offline

Joined: Wed Jan 22, 2014 11:48 am
Posts: 2460
Location: Vienna Austria
Why disc? Just makes it heavier

Edit: Meant the OP


Last edited by Marin on Fri Sep 01, 2017 7:26 am, edited 1 time in total.

Top
   
PostPosted: Thu Aug 31, 2017 3:43 pm 
Offline

Joined: Wed Feb 18, 2009 12:02 pm
Posts: 753
jever98 wrote:
...because of the convenience of disc brakes vis-à-vis integrated rim brakes. For example, I currently ride a Trek Speed Concept and avoid changing wheels at all cost because the rear brake is a complete b**** to adjust.

_________________
----
No longer in the industry


Top
   
PostPosted: Thu Aug 31, 2017 7:25 pm 
Offline

Joined: Wed Aug 30, 2017 4:01 pm
Posts: 4
jever98 wrote:
I've also thought about the topic a bit and have ridden both TT and "converted" road bike frames.

Re using a "converted" road bike frame: I wouldn't do it. The front center (distance from BB to front axle) is shorter on a road bike than on a TT bike. If you keep the same position, you would put more weight on the front wheel. TT bikes are usually also built to steer slower and go better in a straight line, which you would sacrifice - your setup would be twitchier.

Re light setup: two frames that seem lightish are the Quintana Roo PR6 and the Parlee TTIR Disc (claimed 1200g frame weight). I am attracted by the TTIR Disc, because of the convenience of disc brakes vis-à-vis integrated rim brakes. For example, I currently ride a Trek Speed Concept and avoid changing wheels at all cost because the rear brake is a complete b**** to adjust. Disc would make that way more convenient. Plus the benefits of braking better, which can be interesting on hilly courses.

A thought for you: if you want to go light, don't stick to the 808 and Super 9 disc: for example, the Citec Ultra disc is a whooping 250g lighter (1075 Super 9 clincher vs 825g), their 8000 Ultra front wheel is another 160g lighter. Both very under rated products imho, but technologically interesting and good for real world use.

Have fun with your project and share what you settled on!


good points on the wheels mate. I suppose i've just been hesitant to change the disc + 808 because of the initial price outlay.

I considered the handling issue... i wonder if that could be negated by using a TT bike fork with a more relaxed steering angle.

I've had a look at that 2016 cannondale slice black.... could be a beauty in all black.

Once again cheers for the input.

I've got one more race (Ironman Wales next weekend) on my current Argon E112 and if I'm lucky enough to get a ticket to kona I'll get some kind of build thread on the go for the new race whip.


Top
   
PostPosted: Thu Aug 31, 2017 7:33 pm 
Offline

Joined: Thu Mar 08, 2012 11:43 pm
Posts: 3332
tomcooling25 wrote:
I just wondered how much of a tangible difference you'd see from a properly set up road bike framed TT bike vs a tt bike framed tt bike. Same rider, same position.

Except when you can't get the same position. Modern TT bike STAs are significantly different from road bikes. S5 vs P5 is 73 vs 79. E-117 vs Nitrogen is 78 vs 73.5. Then as mentioned the reach and FC measurements are often quite different to accomodate the forward position.


Top
   
PostPosted: Fri Sep 01, 2017 10:30 am 
Offline

Joined: Wed Feb 18, 2009 12:02 pm
Posts: 753
tomcooling25 wrote:

I've got one more race (Ironman Wales next weekend) on my current Argon E112 and if I'm lucky enough to get a ticket to kona I'll get some kind of build thread on the go for the new race whip.


Good luck with that race. Bloody hard bike course. I did the first edition in 2011 (on a road bike with a forward seat post ;-). Run is a killer, too, if they haven't changed the course. My slowest IM.

_________________
----
No longer in the industry


Top
   
Posted: Fri Sep 01, 2017 10:30 am 


Top
   
 
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 14 posts ] 

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. New build ideas

in Road

ohyeah22

2

411

Sun Aug 06, 2017 7:28 pm

ohyeah22 View the latest post

There are no new unread posts for this topic. Build Ideas for trial of 1x Road Set-Up

in Road

minorsubplot

10

751

Fri Oct 27, 2017 8:27 pm

bm0p700f View the latest post

There are no new unread posts for this topic. Climbing bike project ideas....!!!

[ Go to page: 1 2 3 4 5 6 ]

in Road

Neckkoss

86

13751

Sun Nov 12, 2017 5:36 am

Conza View the latest post

There are no new unread posts for this topic. Looking to build a 12-lbs climbing bike

[ Go to page: 1 2 ]

in Road

Noctiluxx

19

1578

Mon Aug 07, 2017 6:35 am

tonytourist View the latest post

There are no new unread posts for this topic. bike build questions...

[ Go to page: 1 2 ]

in Road

izz012

26

1708

Wed Oct 04, 2017 11:21 pm

hcgaloi View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: evan326, kookie, mnmasotto, toshi and 18 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited