Aero tube shaping is seemingly everywhere these days and Reilly CycleWorks has joined the club, adding Kamm tail tube shapes to the world of titanium with the Fusion, its latest road bike. The frame features an investment cast 6Al-4V titanium head tube, seat cluster, bottom bracket shell and dropouts with 3Al-2.5V tubing.
The Fusion is set to be launched officially at The Cycle Show, so if you’re headed down there, you can check it out for yourself, but Reilly has given us some details ahead of time. The Fusion is, Reilly says, “an evolution of our road series,” and the new bike “combines classic Reilly race geometry, top grade hydroformed titanium tubes and advanced engineering to create a light, aerodynamic titanium frame to rival carbon equivalents.”
While there are plenty of aluminium road bikes that have been treated to aero tube shapes - namely the 2022 Specialized Allez Sprint - titanium frames featuring aero profiles are significantly less common. Australian brand Bossi has the Strada SS, but otherwise, the Reilly Fusion is one of the only aero titanium road bikes that we know of.
The result is a frame that certainly looks very clean, with all of the cabling hidden away by an FSA ACR headset that passes the cables down through the top headset bearing. But the sleek finish is further helped by what Reilly describes as seamless welding, giving what looks like a very smooth finish to the tube junctions around the headtube.
As previously mentioned, that headtube is made out of 6Al-4V titanium, noted for its very high strength which should make for a very stiff headtube indeed.
The dropouts haven't been overlooked in the aesthetics department either, with Reilly using the investment casting method to create this lovely hollow design.
Away from the looks, Reilly has sought to make the frame a bit faster with the use of aero tube shapes. While making a carbon frame slippery in the wind tunnel is a relatively simple job, coaxing metal into those shapes is a fair bit trickier, and Reilly says that the use of investment casting “allowed us to mimic the aero shapes usually associated with a carbon mould or 3D printing.”
The hydroformed tubes use a Kamm tail design where the trailing edge of the tube is effectively chopped off, with the theory being that you save weight while the air behaves as if the trailing edge is still there.
At the rear end, you’ll find a D-shaped seatpost and seatstays that have been dropped slightly which are both measures that are commonly employed to add comfort to the rear end while also saving a few precious watts.
Speaking of watts, while Reilly says that the Kamm tail tube shapes have been used, there is no claim being made here regarding the Fusion being X seconds faster than another bike.
While there is rightly going to be a lot of attention paid to the sleek design, the Fusion also features some sensible stuff such as the T47bottom bracket. This is a threaded design and should make for a quiet life for the end-user. There is also space for wider road tyres.
Speaking about the launch of the fusion, Reilly co-founder Neil FitzGerald said: “Reilly’s Fusion is spearheading the titanium road revolution. It symbolises an exciting time for us, marking a new chapter as we build on our frame building heritage, while continuing to innovate to offer all customers their dream ride and put the individual back into the bike.”
“We have raised the bar again for road adventurers to create a truly cutting edge bicycle frame to enjoy the great outdoors, whether that’s planning an ultra endurance road trip or sleekly navigating the daily commute.”
Prices start at £7,499 with 11-speed Shimano Ultegra Di2, DCR x Reilly carbon wheels, and an FSA ACR front end. Tyres are Continental GP5000 as standard and you can upgrade to Shimano DuraAce or Ultegra Di2 12 Speed, SRAM Red eTap AXS or Campagnolo Record EPS should you wish.
The wait time for a bike, should you pre-order one, is July of this year. Given the lead times that some brands quote, that's rather good.
reillycycleworks.com
LOL! What a stupid metric. How long does it take to walk a km versus cycle a km?...
Just buy Spatz. Look ridiculous but who cares when your feet are warm?!
I was inches (literally) from being wiped out by a bin lorry on good old CS7 (Tooting High St) this morning. Driver obviously wanted to pull in to...
You just need to increase the braking surface of the brake shoes.
The driver sounds like a nice chap..
I'd guess that the others were simply unfit to stand / walk?
We stopped doing those studies because they didn't work - they didn't show our treatments were working and we know they do, so the tests are wrong!...
"Nobody ever swam across the river full of alligators, so we installed a bridge. Since opening the bridge, three people have tripped when walking...
I work for a company that is starting to use similar software. The issue is that before this someone had to be looking at the screen, and...
Interesting about also taking on Wildcat Gear as I've found that to be both functional and durable as a customer. You could say they've gone from...