Lightest Aero Rim Brake Frameset?

[Lelandjt]

Refresh my memory, what was it? I'm happy with my Fuji Transonic SL but was thinking of treating myself if the right frame pops up used (I can't imagine I'ĺl be lucky enough to find NOS.
My guess is the top spec Scott Foil in it's final rim brake version.

[Maddie]

Canyon Aeroad SLX rim is a very good frame but not easy to find.

[iamraymond]

The Canyon Aeroad CF SLX was the lightest aero frame a few years ago before discs took over. Around 950g.

[mrlobber]

Felt AR FRD. That one could be built to 6.2-6.3 kg (Imaking had it here, but when he left, deleted/edited all his posts), and in Tour testing, was 2nd to S5 only.

[WorkonSunday]

not your typical aero shaping frame, but Scott Foil in HMX (is there an HMX-SL version for rim?) is definitely an aero frame and on the lighter side. reportedly on WW 920g.

[MichaelK]

Sarto still make the Lampo in rim brake if you want a brand new frame.

[Visus]

My 2017 Scott Foil Rim in the top spec HMX version (color black-green), size L/56 measured
1066g frame with bottleholder screws
370g fork uncut

[FIJIGabe]

The older Madone 7's (especially if you can find it with the Vapor Coat) weigh in at 725g (size 56). The problem with that bike are the brakes. The Trek brakes, well, suck, and the Shimano brakes are good, but heavy. I don't think you can find a direct mount brake that fits the recess in the front, other than those two options, and for the rear (under the BB), I never found much of a problem with braking, even in wet environments, but again, you're limited to Trek's unimpressive offering, or Shimano's (which aren't light, by any stretch).

[mechkbfan]

What did you end up going with?

[ryanw]

2nd gen 56cm S5 rim was 1,055g IIRC.

[Lelandjt]

What did you end up going with?

Some good suggestions here that I'll start looking for in size 60 but nothing with as much weight loss as i was hoping for. My Transonic SL only looks to give up 150-200g to the lightest frames. The other aspects I'd be looking to improve would be a steeper seat tube or non-setback post and chainstay rather than seatstay brake to eliminate rub under power.

[ehlpitel]

The older Madone 7's (especially if you can find it with the Vapor Coat) weigh in at 725g (size 56). The problem with that bike are the brakes. The Trek brakes, well, suck, and the Shimano brakes are good, but heavy. I don't think you can find a direct mount brake that fits the recess in the front, other than those two options, and for the rear (under the BB), I never found much of a problem with braking, even in wet environments, but again, you're limited to Trek's unimpressive offering, or Shimano's (which aren't light, by any stretch).

I love mine- it's not WW'd out in it's current form but with a mixutre of R9100/R8000 and some 38mm deep ICANs- it's weighed 7.25kgs- that's with stock DM front brake and a 9010 rear- the only piece of the groupo that's 9100 is the shifters- everything else is R8000- so it can be relatively easily made quite lighter- especially with some tubs, lighter bar/stem, crank, brakes, etc. I know you can put an eeBrake on the rear, like you said, not sure what you can fit on the front except for the Bontrager ones (which, the newer DM ones are reasonably priced on eBay and look way better than the older stock ones- IMO).

With all that said, IDK how aero these frames are when compared to the newer ones- they're definitely nice and light, fun to ride, stiff enough and also different from most of those are bikes in that they're not quite as aggressive unless it's an H1 geo- otherwise, the head-tube is like 190mm on my 58- so it's not ultra aggressive like my old P3 aero road bike conversion- my open mold VB-068 was also more aggressive- but it was basically a Venge clone geo-wise.

IDK, I love my Madone, but out of the bikes I've had in the past two years (when I got into riding for real), the Cervelo P3 that I built into a road bike was by far the most fun, fastest "feeling", light at the time b/c I was rocking it w/tubs and stiffest (I think- this was a year ago I had it).

Either way, I'm definitely a big fan of Madones- I just don't love the newer style of rim brakes they offered and I *f##k* HATE the integrated cabling situation- unless I'm running Di2 or eTap with cable brakes- it would be a major headache.

[mechkbfan]

Some good suggestions here that I'll start looking for in size 60 but nothing with as much weight loss as i was hoping for. My Transonic SL only looks to give up 150-200g to the lightest frames. The other aspects I'd be looking to improve would be a steeper seat tube or non-setback post and chainstay rather than seatstay brake to eliminate rub under power.

Yeah, I've been looking for a Transonic SL now. They look like fantastic bang for buck of aero & light. Quite rare though.

[Lelandjt]

Some good suggestions here that I'll start looking for in size 60 but nothing with as much weight loss as i was hoping for. My Transonic SL only looks to give up 150-200g to the lightest frames. The other aspects I'd be looking to improve would be a steeper seat tube or non-setback post and chainstay rather than seatstay brake to eliminate rub under power.

Yeah, I've been looking for a Transonic SL now. They look like fantastic bang for buck of aero & light. Quite rare though.

I love it except the setback seatpost. An attempt at making a second post into an inline head was ruined by the machine shop I hired for the drilling and that was the last replacement post I could find. I may get a custom post made.

[StiffWeenies]

Yonex Aeroflight

830g