Reviews

Bird Aeris One45 review

So I recently tested the new Bird Aeris One20 and the review is here. Once I handed that back, I was given the bigger, burlier brother, the One45 and went to the Surrey Hills to put it through its paces. Simply put, at the end of the day, I didn’t want to give this bike back.
Before I get too carried away, let’s talk about the bike. At 6’1” and 87kg, I currently ride a large original (now retro?) Aeris, but opted for the ML (medium long) version of the new bike. The reason for this is due to an increased top tube length (630mm) and wheelbase (1230mm), effectively sitting me in a similar position to my current ride. Measurements are below, these can also be found on the Bird website:
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The demo bike came with 150mm RockShox Yari forks and a metric Deluxe RT3 shock with 145mm travel. I ran the suspension at 30% and 20% sag respectively, opting for a slightly stiffer rear for the terrain I was heading to. Like the One20, it was equipped with SRAM GX 1×11 drivetrain and guide r brakes. The wheels were slightly wider DT Swiss M1700’s, with the same Maxxis DHF/HR2 combo I tried the day before. This time though, I ran the rear at 23psi and the front at 20psi. Again, a mighty Mudhugger Shorty was on standby to keep any mud and slop from my face.
The weight was around 30lbs, so a like for like with my current bike and this was evident the second I sat on the bike; I felt instantly at ease with it. The bike has been totally redesigned around metric sizing and boost spacing, but it felt familiar, which is a huge plus when you only have a day to form an opinion!
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It was another cold Winters day, so the ground was frozen with some iced over areas to contend with. I set out and after what is usually a brutal climb out of the Walking Bottom car park up a super steep 13-15% incline, I still had air in my lungs; this bike genuinely climbs like a hardtail with zero feeling of pedal bob… from then, I knew it was going to be a fun day out. I hit Proper Bo to get the measure of the bike and the power was instant. Snaking through the small turns and ruts, the small double and drop on this trail felt like nothing.
Due to it’s steep seat tube angle (440mm), the One45 felt long and slack when attacking the descents but put the saddle up for a killer climb and it shortens up, allowing you to really put the power down and stomp uphill in record time. It’s like Optimus Prime’s wet dream, a transformer of epic proportions.
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I figured it was time to try a bigger trail. Thick & Creamy on Pitch Hill had a hold over me this time last year with its 2 sizeable drops and a crazily steep, tight chute as the entrance. I’d nailed it a few months back, but on the One45, I breezed through and it genuinely made the drops there feel like I was hopping off a kerb. The landings were so smooth and the bike soaked up everything with more to give. Granted it’s not carbon, but when the One45 is released in March with its ultra-stiff chassis and tidy design (and bottle cage mounts!), it may have Nomads and Capras squirming a little uncomfortably in their seats.
Thick & Creamy done, I gave Thicker & Creamier a go next. Another crazy steep entrance gives way to loamy turns and fast bombholes. However, there was a monster puddle in one of these, which I tried riding around, only to eat dirt. After a nice soft landing and a little chuckle to myself, I was back up and finished the end of the run with its nice step up before leading out to the road and a nice climb back to the top.
The Surrey Hills is great, too, with an abundance of trails and friendly riders. I bumped into a film crew from Fly Creative and a guy called Phil, chatted to them for a while, then saw Joe Williams of Physio 1 to 1. Check him out here if you’re in need of a top class physio! Here’s a couple of close ups:
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Taking so many pictures, riding like a bat out of hell and laughing like a mental case made me hungry, so I set my sights for the Peaslake village store, via the renovated Captain Clunk. When I say renovated, I mean ruined. It’s been tamed down massively and wasn’t anywhere near as challenging as it once was. A huge shame, but there’s still a vast network of trails to keep every level of rider entertained.
Whilst I was tucking into a red velvet cupcake and slurping coffee to refuel courtesy of the ever lovely ladies at the store, a few Trek staffers rocked up on some of their 2017 demo models, so we had a chat about the Aeris and their Remedy and EX models before I set off for round 2 and my old favourites on Holmbury Hill; Yoghurt Pots and Barry knows best.
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Consistently, the One45 climbed like a trooper, making light work of the Radnor Road climb. With sore legs, I hammered through Yoghurts as best as I could and then flew down BKB as if I had sprouted wings. I did pick up some PR’s earlier in the day (including climbs), which is testament to the bike. The Surrey Hills is a place I’ve been riding for so long and riding this bike breathed new life into very familiar trails, rejuvenating my love for some that had become a little stale over the years.
Massive thanks to Bird for the demo. The One45 drops in March and you can pre-order yours here. As with the One20, a huge range of sizing and a fully custom bike builder means there will be an Aeris One45 for you. Colours are delightful too; lime green, the tangerine orange model I tested and my favourite of course; stealth black. Frame prices start from a wallet friendly £900, so this is set to be another outstanding value for money machine.
I absolutely love my current Aeris and I’m sure it’ll go on for a long time yet. However, when it’s time to change, the One45 will be at the top of my list. The One20 is superb, but from the second I slung my leg over the One45, I felt at home; one with nature and metal, with nothing but zen thoughts of shredding epic trails in my mind.
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I’ve been trying to pick out a flaw or a negative point, but after sleeping on it, I honestly have nothing bad to say about this bike. To sum it up, imagine if you will, that Hercules and Icarus had a baby. Their lovechild would be an Aeris One45. Immensely strong, stiff and solid, yet light as a feather when climbing and faster than me at an all you can eat buffet.
It’s a most welcome addition to their line up and is simply an outstanding successor to the Mk1 and Mk1.5 Aeris models.
The Aeris is dead; long live the Aeris.
Cheers,
Ian @ Stealth Riders
Note – This is my own review and all opinions are mine. I was not paid or asked to do this, I just wanted to share my views in the hope it may help you out if you’re in the market for a new bike. The ride I did can be seen on Relive right here. I’ve also included a video full of sketchy riding, crap angles and a little stack from my day out:
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