Giant Propel Advanced 1 Disc 2021

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Du schaust: Giant propel advanced 1 disc 2021

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The huge Propel advanced Disc is in efficient, firm-feeling bike v aerodynamics designed specifically with disc brakes in mind. It"s not the lightest cycle available weil das this kind of money but it"s fast whether you"re soloing off die front or sprinting zum the line.

Pros: Stiff and efficient, strong aero credentials, excellent disc brakesCons: not especially lightweight, you"re tied into using Giant"s handlebar und stem

Rim brake versions des the Propel oase been in the large line-up zum years, however this zu sein the erste time that disc brakes schutz been added. Although pickled in salt brake Propels are blieb available, they"re every based around die previous framework design; the neu version is disc brake only.

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The Propel advanced Disc might notfall lurch forward favor some lightweights do wie man you accelerate out of a sluggish turn, but that"s not what aero lucidrhythms.comway bikes room all about. It"s designed with efficiency in mind, both in terms von aerodynamics und stiffness. The aero side von things zu sein difficult zu discern (I"ll startseite aerodynamics bei a bit) but this bike definitely feels stiff when you rubber stamp on the pedals, v very little flex to speak of even when you"re stand up und giving that everything you have.


This stiffness expand to ns front ende with a head tube that functions Giant"s Overdrive 2 design with a 1 1/4in top bearing und a 1 1/2in lower bearing. Giant"s own alloy call SL Aero handlebar doesn"t flex much when freundin haul on it either, which is notable because some aero choices do thanks zu their slim profile.


You"d have to speak that ns Propel advanced Disc gives quite a certain ride, und that might or might notfall be zu your taste. Von that i don"t mean that it"s uncomfortable – it"s not that – but it is, yeah, firm. This isn"t a gran fondo or endurance bike, it"s a gyeongju bike (even if freundin don"t gyeongju it) und that comes through bei the feel.

That said, I gott on fine with Giant"s contact Forward saddle through a composite base the flexes enough to take die edge turn off things, and Giant"s very own 25mm Gavia gyeongju 1 tyres space set nach oben tubeless so you tun können run them at lower pressure than you otherwise would without ns danger von pinch flatting if sie hit a pothole.


The Propel progressed Disc treads die middle ground in terms von manoeuvrability, flicking roughly ably when you want zu move in ~ a kopieren, gruppe or change your line on a schon fast descent, und it isn"t too much of a handful bei crosswinds compared kommen sie other aero bikes I"ve ridden, partially thanks zu Giant speccing a shallower-section (42mm) SLR 1 Aero disc wheel at the front than weist the zurück (65mm).


In terms des aerodynamics, large says that the Propel Disc had a detailed development phase involving that engineers und experts at ns Aero principle Engineering facility in Magny-Cours, France. They offered a moving mannequin und spinning wheel on ns bike in the wind tunnel bei order to get precise data.

The result is a bike that functions a new truncated ellipse aerofoil profile. You probably know die deal by now because it"s a formula followed über other brands: designers come up with in aerodynamically efficient shape und chop die trailing edge of the profile turn off square kommen sie save weight, improve handling und stick in ~ UCI rules, while maintaining most von the wind-cheating performance.

This aerofoil profile zu sein used weil das the fork legs, most des the frame elements und the seatpost. Giant uses other functions that we"ve kommen sie to expect von aero lucidrhythms.comway bikes over ns years, such together a concealed seatpost clamp – it"s a wedge system that sits within the top tube/seat pipe junction – a seat tube that"s cut away around die leading edge des the rear wheel, and a horizontal top tube.


One other crucial feature zu sein Giant"s very own aero handlebar and stem system that leaves no exposed hydraulic brake hose and just 5cm of gear cable reflecting on either next (between exiting ns handlebar und entering ns stem). I"d define how that works yet a picture paints a thousand words...

Essentially, gigantic specs in aero handlebar (the dimensions von the tops are 56mm x 26mm) and has included a composite cover to die top von the stem. Die gear cables and brake hoses run under there, then v some rubber shrouding that sits behind die headset spacers und into die frame. Die stem cover is held bei place von 2mm hex bolts that space a wenig fiddly, but nothing sie can"t handle.

The other vital fact about aerodynamics ist that, as mentioned, the neu Propel framesets are disc brake only. Huge says it found that with suitable integration a bowl brake design tun können be an ext aerodynamically effective than a rim brake bike.

"This ist because ns location des traditional callipers (either in front or behind the fork crown/legs) create "dirty" air," states Giant. "Opening up ns fork crown area (by placing die disc-brake callipers down at the hub) way that the air hitting the neu disc-brake calliper has already been disrupted von the leading edge of the tyre/wheel. This effect ist further amplified by bei asymmetric fork that helps smooth out airflow over die calliper."

There space three Propel bowl platforms und various builds, und here space the main features des each:

The top-level Propel progressed SL Disc has actually a frame und fork do from Giant"s progressed SL-grade carbon composite, in integrated seatpost und a contact SLR Aero composite integrated handlebar und stem. Die fork is a one-piece construction.The Propel Advanced jeden Disc has an Advanced-grade carbon composite frame and fork, a non-integrated seatpost, a call SLR aero composite handlebar und a contact SL Aero alloy stem. Die fork ist full-carbon yet it"s not a one-piece construction.The Propel progressed Disc, which ist the one we oase here, is so made native Advanced-grade composite, but the fork steerer ist alloy, as are the Contact SL Aero handlebar and stem.

Putting die integrated seatpost kommen sie one side, the frame and fork file are identical across the range. Huge doesn"t to speak that die Propel wollen save freundin a particular amount von time end a offered distance, but does say the it ist the faster disc brake aero lucidrhythms.comway bike it has actually tested weist all wind angles except zero (when the apparent wind zu sein coming from directly ahead).

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The only mal you"ll get a zero apparent wind angle room when die air ist completely still, wie you"re riding straight into a headwind and when die wind ist coming from directly behind you. Giant"s engineers reckon the this zu sein rare und claim that the Propel zu sein the fastest bike bei its category an real world conditions. Giant also says that die Propel has a lower drag coefficient hinweisen a more comprehensive range des yaw angles 보다 its non-disc brake predecessor.


The giant Propel progressed Disc zu sein built to an aggressive geometry, which is what you"d expect von a cycle designed zum speed. We have the M/L modell here v a 545mm seat tube, a 570mm oberteil tube und a 165mm head tube. Ns stack is 562mm, the reach is 398mm, and both the head angle and the chair angle space 73 degrees.

The height of the front ende is boosted by a whopping 5cm des headset spacers. Possibilities are you"ll want to drop that, weist least a little, von chopping down ns fork steerer. This requires that freundin take ns top cover off die stem an order to access the headset"s top cap. You tun können only refit the cover if die top des the steerer sits do the washing up (or practically flush) with die top von the stem – yet you kann sein run the stem there is no the cover for a if if you nur want zu try the end a couple of different handlebar positions weil das size.

While we"re talking about such things, ns aluminium alloy Giant call SL Aero stem ist 110mm on M/L versions of the Propel, und it wollen soon be easily accessible aftermarket (£150) in 80-140mm lengths. You don"t acquire a choice des angles deshalb it"s nur the number von headset spacers the determines handlebar height. It"s down to the individual dealer even if it is they"ll swap zu a different length stem if you want one. Freundin don"t need zu disconnect the cables or brake hoses bei order zu swap ns stem, von the way.

The unique clamp shape means that with this stem you"re tied zu using a large handlebar weil das the duration (it"s 42cm wide on our M/L dimension bike) since nothing else will rechts (the Giant contact SL Aero riegel on die Propel advanced Disc is alloy, back a composite SLR version ist available in 40cm, 42cm und 44cm widths weil das £249.99). Ns cynical among sie might number that huge does this kommen sie keep you true to die brand. Maybe, however on a bicycle that"s all around aerodynamics it also makes sense to use components that have been specifically designed to work with each other as a complete system to minimise drag.

That"s fine if you get ~ above well with this bar, und I did. Ich liked ns ergonomic shape of the drop und didn"t find my wrists hitting die tops while i was under there. I deshalb found the deep, aero section tops yes, really comfortable throughout climbing.

However, you can"t alter the angle of the handlebar und if sie don"t like ns bar"s form or level von stiffness you"re stuck, dafür make absolutely sure that ns Contact SL Aero bar works weil das you prior to handing over her cash.

The unexplained shape von the handlebar method that return you kann fit a rubber-backed bike computer mount through O-rings, freundin can"t clamp in out-front mount zu it. Instead, huge gives you in out-front mount that fixes kommen sie bolts the hold die stem"s front plate an place. It"s a neat equipment but the mount at this time has inserts only zum Garmin Edge und Giant Neostrack computers und Giant doesn"t oase plans kommen sie extend the to startseite a Wahoo Elemnt Bolt, weil das example. The tonnage we heard, Giant was going zu speak to RaceWare to seen if there was enough demand zum it kommen sie produce other inserts, und you tun können buy third party out-front mounts that rechts to stem bolts for other devices.

Wheels und tyres

As mentioned above, gigantic specs its very own SLR 1 Aero disc wheels, the rear one v a 65mm-deep composite rim kommen sie reduce drag, ns front one v a shallower 42mm-deep rim for greater stability bei crosswinds. Makes sense. Ns rims are ns same as on Giant"s top-level SLR 0 wheels however with lower ende DT Swiss hubs. Both the front und rear wheels space 12mm thru-axle.

I went on a couple of really publicly rides throughout testing and only i found it a significant effect on handling compared to shallow section rims wie man descending punkt about 40mph with ns wind gusting across me. Of course, some world (and your bike positions) are more susceptible to being thrown off-line than others.

The SLR 1 Aero disc wheels and Giant"s very own Gavia race 1 tyres come set hoch tubeless. Periodically oberteil them trost with sealant und you have to experience far fewer punctures than normal. There"s enough space zum you zu swap the 25mm tyres weil das 28s if freundin fancy putting more air between yourself und the

Ultegra groupset

The Propel progressed Disc ist built up with a second-tier Shimano Ultegra groupset which ich won"t cover bei depth here, however it basically performs favor top-level Dura-Ace with die addition of a wenig weight. The 52/36-tooth chainset ist matched to an 11-28-cassette, i beg your pardon doesn"t provide you die widest range of gears ever but it"s clues on zum a bike des this type, and the Shimano PressFit bottom parentheses hasn"t creaked at all during testing.

The Shimano Ultegra hydraulic disc brakes put in a dependable performance an all weather conditions. Giant specs 140mm rotors front and rear (it go this across its range) which provide marginally much less stopping energie than 160s and will heat trost quicker, yet I"ve got along just fine without providing them a 2nd thought.

Good value?

Of the aero bikes we"ve reviewed right here on recently, Bianchi"s Aria Disc was £3,350, another model for which the manufacturer doesn"t i have announced any specific aero figures (whatever those figures are worth!). The Aria Disc has a carbon frame und the ausführung we reviewed had actually a Campagnolo Potenza groupset, back it"s deshalb available an a Shimano Ultegra build zum £3,150.

The rim brake Orbea Orca Aero M20 team that we reviewed was built nach oben with in Ultegra groupset und DT Swiss PR 1600 Spline 32 wheels, and was priced weist £3,632. On ns face of it (and this is always dangerous), ns Giant is better value zum money.

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Overall, huge presents a compelling package here. The Propel advanced Disc ist fast und efficient with terrific disc brakes and very an excellent wheels, unlike some rivals that kommen sie fitted through place-holder wheels the you"d want kommen sie upgrade in order kommen sie realise die bike"s full potential. That does oase a for sure feel und you can"t switch to a various handlebar and stem combo, however if you"re glücklich with those jene then this ist a cycle that"ll give freundin a boost an your pursuit of speed.


Aero bike that provides speed, efficiency und a solid spec

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