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I run 28mm now on the Kinesis 4S and I would like to go bigger. 2 weeks of smashing into potholes takes its toll on undercarriage AND sanity so I'm quite prepared to sacrifice some speed for comfort.
I can't find a weight for the Racelight 4S Disc - do you know how it compares with the Aiethien? What's the £100 price difference get you on the Aithein? Lighter?
I guess the tyre limiter on my 4S is actually the brake calipers, not the frame. I never tried >28s as they were already pretty damn close to the fork. Get a bit more clearance with discs.
Good call.
I might have a word with Bike Whisperer since they sorted my last two Kinesis frames out. Dunno if they're still in contact with the dealer(s) though.
hippy-
I can't find a weight for the Racelight 4S Disc - do you know how it compares with the Aiethien? What's the £100 price difference get you on the Aithein? Lighter?
If you visit its website and choose the "Geometry" tab, at the bottom of each size there is the frame weight, the fork is 450gr in their site, but mine weights 440gr uncuted. My 63cm frame is 1,790kg "naked", although the chart claims 1,72kg.
My actual build is about 9,3kg with mid-range components
For what I know comparing Aithein to 4S, they advertise the first more for racing because of geometry and lightweight, and the 4S has more comfort in the rear triangle. Or at least that's what their seatstays claim:
The Aithein is also cleaner (no mudguard/rack mounts in the frame or fork), but as I said it has no hole in the fork to put the Supernova Triple where the rim brake caliper whould go (I assume you will be using some kind of handlebar bag, I'm not but don't like to have a hot light near my garmin). The 4S Disc is pretty good for just 757€ (£487), more money to get wheels and gears.
I don't have 32mm tyres to test it on my frame, but I assume there is still enough room on both fork and chainstays (0,5mm with 28mm tyres).
PS: Kinesis UK usually answers my questions via direct message quite fast and effectively
bertocq
I suppose you're talking about the price of the GF Ti Disc.
The Aithein 28mm limit should be enough for TransAm, and maybe for TCR if they get some gravel back in to next years course, where you considering 32mm?
You always got the Racelight 4S Disc 55cm S/R = 566.3/394.4
Tarmac 56cm S/R = 564/395
Kinesis Aithein Disc 56cm S/R = 565.8/397
It has clearance up to 32mm, 27.2 seatpost and still under 2kg frameset, Di2 compatible, but 140mm rear rotor. Plus has a hole in the fork that lets you mount the dynamo light (Aithein has no hole there). My Conti GP 4000SII 28mm get 0,5cm clearance on each side of the fork, 1cm on the seatstays and 0,5cm on the chainstays.
I've many pics an info on my project thread, but can take more if you need