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OPINION
Aluminium frames are the work of the devil
Mon, May 02, 2022 18:00
103
Aluminium bike stress testing - credit Steve ThomasMine may well have become vaguely lost in the great mist of time, but those distant memories, the harsh realisations and promises that I made to myself many years ago have come trickling back to haunt me in recent months... namely where I said I would never ride another aluminium bike frame.
> 10 of the best British bike brands of the '70s and '80s
First things first: before all the love for this great Coke can-like material comes flooding in down in the comments section, please do note that this is an opinion piece. It's based off my own many decades of experience riding bikes made from everything from bamboo to magnesium, with a whole heap of steel, titanium and aluminium thrown into the mix... oh and of course, some metal matrix too. These are my own groans aches and opinions, and I don't expect everyone to agree!
The pre-AL era
When I started riding and racing bikes in the '70s it was about steel, all about steel. From the forks right through it was all that good old hard stuff. There weren't really any other viable frame material options back then.
Sure enough the different tubing grades and builds did make for very different rides between the various combinations available, and mostly they were of the slightly forgiving kind. Thankfully in recent times there is some form of appreciation for steel coming back, and maybe even those younger riders who’ve never slung a leg over a quality steel horse will one day try one and find out why us old fellas love them so much (or at least some of us still do), even if they have drifted out of vogue.
> Southern Steel: take a trip down memory lane with these classic 20th century bike builders
Material world order
Perhaps I was lucky that I went from riding steel straight to various forms of titanium frames, and then to carbon fibre – lucky as in there were only a few fleeting encounters with the bone shacking and wrist jarring frights without the delights of aluminium bikes. Even then those that I did ride were mostly fat-tubed mountain bikes, where much of that harshness was padded out with big tyres, suspension, cross-laced wheels and slack angles.
I did have a couple of reasonable aluminium road frames back around the turn of the century, but even then I found them to be super harsh on the lower back and my wrists, which were rattled to popping point after years of pre-suspension mountain biking.
Back then, aluminium had become the de rigeur material of choice for frame building, mostly because it was so cheap and easy to get hold of and mass produce in the Far East... and yep, just about all of the major pro road teams did ride aluminium bikes for a while, although their rides were generally tempered a little by carbon forks.
Even so, many of those frames were still very harsh in my opinion, albeit that they were compliantly rigid. For me they were just too rough and not quite ready, although perhaps my opinion would be different had I been groomed on aluminium from the start.
At around about that same time, Cipollini et al were all racing around on those gorgeous, bold Cannondales. Cipo made fat aluminium look like sex on two wheels, and so when I was offered a good price for one as an end of line clear out (by friends with a bike shop) of course I jumped at the chance.
It was a dull and dark blue in colour, and so I managed to get friends in the bike industry to spray it up in bright sparkling green. I built it up with all clean and polished Campagnolo kit, and garnished it with highly polished stem and bars. It did look the dog, even with those eyesore extended rear stays.
It didn’t take long for me to start loathing the harshness of that ride, and then the lower back troubles, shoulder and wrist ache became a regular thing. It was not a bike that I could ride for hours on end, and as much as I loved the looks of that green Hulk-like beast, it just had to go.
For a while I did get through a couple more aluminium frames, things just panned out that way. One was of the same stiff ilk and was promptly sold, the other (a Diamondback) was slightly easier on the spine, but was so flimsy that on its very first outing to Mallorca, the down tube took a huge ding in the bike bag, and so it still lingers in the back of a shed somewhere.
Grand designs?
At that time I wasn’t wholly sure whether that hard ride was partly down to the frame design (the rear stays), or whether it was simply that aluminium really had not gotten much easier on my ageing body, so I decided not to compromise again on an aluminium road bike.
As luck would have it I did get hold of a couple of titanium frames just after this: a Merlin XLC compact road frame, and a Litespeed Blue Ridge 'touring' frame. This duo added a whole new level of plushness to my ride immediately, and one that had most definitely made me a titanium frame fan boy.
Times have moved on, and I’ve shifted continents. Those titanium bikes are still around and almost as sweet as ever but, just about everything from the carbon forks to the groupsets are worn out, and being based in part of Asia where anything but pure race bikes and kit are an issue to find, and where someone six foot tall is considered to be a yeti, it’s hard to get hold of viable alternatives.
I have a couple of carbon road frames around, but they don’t really suit the riding I mostly do these days: hot and rough roads (and gravel), often with climbs that make the Bwylch y Groes seem like a mill pond.
Still shaken, and stirred
This is where the evil aluminium sneaked back into my life, just like that proverbial crazy ex from hell. On a trip to the USA I managed to mail order an aluminium gravel bike of Belgian origin. Before I’d even finished assembling it I knew it was potentially a beast of back-breaking burden, and sure enough I was soon shown to be right.
I did consider selling it almost immediately, as the discomfort was just too much for me; however, there was no way of me getting an alternative, and so I’ve stuck with it... on and off that is.
Just over a year ago I did take a trip to another region with this bike (it was the only fully functioning option at the time), which was when the wrath of the second wave of the pandemic struck, leaving me stranded with nothing but this bike for company ever since.
As much as I’ve swapped out the wheels, widened the tyres and softened the saddle, it just doesn’t cut it for me in the comfort department. Okay it is a gravel bike, but the ride is so harsh that I’ve almost 90% switched to riding it on the roads now.
My back, my ribs, my shoulders and my neck have taken such a pounding in the last year, which takes me right back to the sensation of that early Cannondale. Aluminium truly is the work of Satan Cycles Inc, at least as far as I’m concerned! Sure there are those younger riders out there who can ride on razor blades, and who have never known any different. But, one day, they most probably will.
For me, as I scour and search for ways of turning aluminium into something more rideable, I do have to remind myself not to fall into the trap of buying more of the stuff simply because it’s all I can get hold of. For now I’ll stick mostly to the hard stuff and soften the tyre pressure some more, just until I can find a ride less brutal on my old body...
More Opinion
Latest Comments
- chrisonabike 51 min 33 sec ago
It was made private someone yesterday dunno why.
- mattw 1 hour 27 min ago
How the FUCK do you do that?...
- mattw 1 hour 36 min ago
Thanks for this Robert. I've made a comment on the review.
- jaymack 2 hours 51 min ago
The only thing those shorts are likely to reduce is your bank balance
- mdavidford 3 hours 3 min ago
To pay any attention. To bother considering one's own actions. To do anything about it.
- David9694 3 hours 8 min ago
Outrage over Exeter parking charges as some refuse to visit...
- Rendel Harris 5 hours 51 min ago
Cars and especially buses and lorries going through standing water, bumping through water-filled potholes etc at 20-30mph are quite capable of...
- Psi Squared 7 hours 42 min ago
I use Conti TR S tires in a 30mm flavor, and they inflate to 32+ mm in width on my Reserve 40/44s.
- Joe Totale 14 hours 59 min ago
It's a shame that Road.cc don't provide their reviewers with spirit levels 😉
- AidanR 21 hours 26 min ago
Chapeau. That is truly epic.
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103 comments
I think it is blue.
Beautiful plumage
(can't find a parrot and squirrel together, but this is cute)
Should have looked harder
Thanks for confirming the 31% price difference.
As you have confirmed, it's a comparison of two bikes in different price brackets.
And also fails to correct for confirmation bias. They *think* the new shiny will be better so the brain makes it so. The only way to prove this out is with vibration sensors at the seat post and stem.
Another alu fanboy that simply can't accept reality.
I have different suspension settings in my car - not surprisingly I can tell the difference between them. I also have two bikes that I love and won't sell - not surprisingly I can tell the difference between them. In my case the alu one was the new 'shiny' one - why didn't I 'think' that one was less buzzy?
To back up your case please explain why my aluminium frame comes with a CF fork and seatpost. Why do manufactures regularly spec them with CF forks? Why do titanium frames usually come with CF forks? Clearly they're all suffering from confirmation bias
You may notice, if you look carefully, that bicycle frames and forks and seatposts are different shapes. Frames are two attached triangles. Forks and posts are not. The former is an extremely stable shape, particularly in the vertical plane that we are concerned with here. The latter are, again, not.
As has been explained to you already, in the vertical plane, a bike frame's material is irrelevant to ride quality because the air suspension contained in the tires will flex long before the double-triangle frame will. As will the fork and the seat post ( and the handlebars, and the saddle itself ). So the material from which those parts are made matters -- unlike the frame, which is simply not going to flex under any usage traditionally referred to as "cycling".
Because you aren't well-informed enough to know to better, and you assumed that would be the case. Non double-blind testing is worthless -- especially when the tester has such hardened preconceived notions.
Interestingly, some of the more technical German cycling magazines subject frames and wheels to engineering flex tests in jigs...and they do flex, usually at the bottom bracket.
Not before the tires do.
One can do a quick test to confirm. Grab a wheelset. Inflate the tires to a normal pressure -- probably 60 to 80 psi for a modern set. Push on the tire with your finger. See it deflect. Now try and deflect your bike's frame with your hands.
Instructions unclear - does anyone know of a good carbon fibre frame straightener?
Caution: excess use may result in a permanent wave - appreciated by other cyclists but not UCI compliant.
Apart from the obvious (that tyres flex), I'm not sure what you're trying to say - unless you really mean that the comfort of your bike derives 100% from your tyres and their psi?
I am saying that frame material has no bearing on ride quality when using any modern tire at appropriate pressure.
Ride quality is a function first and foremost of tire pressure. Other, lesser factors include the choice of tire, fork, saddle, seat post, and handlebar. Think about it -- do you touch the frame of your bike while riding? No, you do not. Your five contact points are all insulated from the frame -- in fact, you do not even touch any component that touches the frame, so there are at least two degrees of insulation between your body and your bicycle frame. Does the frame itself cause discomfort? No, it does not, it is an inanimate object. And that object is itself insulated from the cause of any discomfort ( the surface being ridden on ) by two cushions of air. This is the precise genius of the invention of pneumatic tires, and why we no longer travel around on wooden wheels.
What's the most comfortable suspension-less bike? A fat bike. Why? Obviously, the massive cushions of air at ~10psi, which soak up everything. From there down to the skinniest tires at the highest pressues is a spectrum of declining ride quality, and this is not a coincidence.
But here's a simple experiment for you: you put your foot on one of the pedals, hold the front brake on and put half your weight on the pedal with the crank at about the 1-2 o-clock position. You'll be able to see how much your frame flexes
You're one of those Ultegra crank salesmen aren't you? I'm not falling for that trick again.
How and from where are you measuring this alleged flex?
Because what actually happens when you put half your weight on a pedal is that you compress your tires. So yes, in this test, your bike will get slightly closer to the ground, but not because the frame is bending -- it will be because you are compressing your "suspension", which in the case of a typical road bike, is those two cushions of air inside your tires.
Try the same test with a full-suspension mountain bike if you are not yet sure of the effect.
Completely missing the point and not remotely answering my question.
Your attempted point was that manufacturers commonly use CF for forks and seat posts. I explained exactly why. Or, more precisely, one of the reasons why. CF is also cheaper than titanium, and lighter than other options. To say nothing of marketing. Manufacturers of many products use materials without any benefit, if customers will pay a premium for them.
Your second attempted point was that you preferred one of your frames over the other -- and again, I explained to you why.
I'm afraid you are going to have to try again.
You didn't explain anything that was vaild - as mentioned previously - it's not about frame flex.
Anyway - Just for reference we have tyres here and we spend pounds.
Really. So you are claiming that it is "invalid" to state that CF is lighter than other frame and fork material options? And it's "invalid" to point out that bike manufacturers often have completely non-technical motivations for selecting materials?
Or, more to the point, that frames are a different shape than posts and forks.
I'm afraid you are going to have to try again.
So if you've finally abandoned the idea of frame flex, what is it now about? Please say 'vibration damping'. I am dying to hear how and why frame builders use some magical formulations of CF and titanium that are apparently unavailable to fork, post, saddle, stem, and handlebar manufacturers. Also cannot wait to hear about these bottom bracket and headset bearings that transmit every vibration with audiophile fidelity.
A significant proportion of which can be accounted for with the groupset so as I stated - your argument is nonsense and also clearly completely misses the point.
But hey - keep going Alu fanboy!
How much do you think the cost difference was between 105 and Ultegra at the OEM prices of the day?
I don't think you realise how moronic this sounds.
Significantly less moronic than refusing to accept the blindingly obvious.
So blindingly obvious that the comments are full of people who disagree with you.
Well - there are a few comments from your fellow alu fan boys but nothing that remotely approaches a worthwhile counter argument - how about (attempting) to answer my question?
So blindingly obvious that the comments are full of people who disagree with you
I think it's a futile and thankless task trading sense with a nutter peddling a load of nonsense blended with stupid epithets like 'alu fanboy'. Apparently, I'm one of these, despite having never owned a single aluminium framed road bike (I do have an oversized tubing Al mountain bike). I'm getting used to this- I'm also designated as a dimwit unable to perceive that disk brakes are really rubbish, having been deceived by marketing into a belief that they're a lot better (for non-racers) than rim brakes and that those rims that I thought I had worn through from braking were merely an illusion. There are quite a few stupid people on here.
Why is it difficult for you to accept the real life experience of someone who has tested it out? As I mentioned - I LOVE both bikes and have had them for years.
If you haven't got any actual experience yourself you are simply peddling a load of nonsense you've read on the web.
It's worse than that - the disc brakes you like are - shudder - MECHANICAL.
Most comfortable bikes I've ever ridden: Mason Definition (Al), Kinesis T3 (Al), Bianchi Infinito (carbon), Cervelo R5 (carbon)
Least comfortable bikes I've ever ridden: Felt FA (Al), Cervelo S3 (carbon), Genesis Day One (steel), Van Nicholas Ventus (Ti)
The Genesis and Van Nic were particularly harsh, despite steel and titanium allegedly providing a "magic carpet" ride.
I don't think frame material makes a blind bit of difference to ride quality. Geometry, tube selection, wheels and tyres, however...
I had a Scott Aluminium bike and it was the biggest POS but it got me back into riding. I decided if this was Aluminium my next bike would be carbon. Forward a few years and did a holiday where I rented a caad12 because it was the same as my Evo at home but cheap to rent. It was brilliant and so close to the Evo I bought one when I got home as a winter bike. I've just killed it by ripping off the braze on! She will be missed. Wheels do make a big difference even the same tyre/tube combo. Recently gone tubeless and 28mm on a bone shaking aero bike and honestly has turned it into an all dayer.
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