Showing posts with label Grail bike. Show all posts
Showing posts with label Grail bike. Show all posts

Saturday, October 14, 2023

Two Things

Canyon Grail v2 (Image courtesy of Canyon)
 Canyon Announces V2 of the Grail Gravel Bike:

Canyon Bikes announced the second version of their Grail gravel bike recently. Stating that they had spent hours and hours testing a prototype with adjustable geometry and with race feedback from Pro level gravel racers, they had arrived at the perfect geometry for a gravel bike. 

They needn't have gone to all that trouble though. These things were figured out many decades ago. I wrote a series (which that link is one entry of four in that series) about gravel bike geometry and why things have come to be the way that they are now. Again- these geometry issues have all been thoroughly vetted out and tested. Years and years ago. 

But Canyon did their research and ended up with geometry which is nearly identical to my 2014 Raleigh Tamland Two which was inspired by, you guessed it, geometry from the early 20th Century. I find it not so much a silly thing that we keep hitting on similar things in terms of geometry for gravel/all-road bikes, but I think it is more a validation of those ideas which early bicycle designers found which worked. Yes, the materials have changed, the way we utilize technology has changed, but the basics really have not changed. What makes a bike handle well on rough roads? It seems to be a generally accepted idea that something along the lines of a Tamland Two and a Canyon Grail is where the target is for good geometry.

Now, as for aero, features, and weight, yes- the new Grail is light years better.  I like the integrated storage, the neat frame bag, and Canyon says that bag makes the bike more aero. Cool! That's some good thinking there. Tire size is limited out at 42mm, which is probably a bit tight for many folks, but this is right at where I think most people are wanting to be in terms of tires. Racers especially aren't going to run much bigger tires typically than that.

Yes- the Grail is expensive, but what carbon flagship gravel bike isn't? I don't like to see the prices escalate as that is just another barrier to entry to a sport that needs less stuff like this and more 'not-so-sexy', halo-ish product. But racers are going to want something like this, and I think that overall, the Canyon Grail looks pretty spot-on. 

Gravel Mutt v3: Return Of The Gravel Mutt:

Some years ago now I put together two bicycles from older Trek models to demonstrate the way many riders used to cobble together a bicycle for gravel travel before the advent of "gravel specific" bikes and gear. I used a Trek 720 and an old "barn-built" Trek from 1978. 

Neither were what I would be able to put up with for long and the experiments were both short-lived. The biggest issue I had were the too-high bottom brackets, especially on the 720, which surprised me. You'd think a touring bike would have a deep bottom bracket, but apparently Trek didn't see things that way. 

The older Trek was somewhat better, but there was something weird with the layout of that bike which put your weight way out over the front of the bike. That was a deal-killer. Both Treks went to the scrap heap as a result.

I've been on the lookout for a suitable replacement for those bikes and an old Raleigh I used as a fixed gear bike. Since I have been at the Collective, several near-misses have come and gone as donations there, but none have been close enough for me to take seriously as a project, until now, that is. 

What is really cool is that this bike is a bit of an outlier in terms of its geometry and what it is capable of in terms of gravel set up. I found an old catalog scan which confirmed my quick measurements of the geometry. I decided it was worthwhile and so this bike is nearly done now and it will be ready to show soon. 

In terms of my discussion of the Canyon above, I think we will see this "gravel mutt" is another example of a hold-over from an earlier time in terms of geometry and capabilities. A bike that will point to how the Canyon's geometry isn't anything all that new. 

Stay tuned....

Thursday, March 15, 2018

The Canyon Grail Gravel Bike: My Take

Canyon range topping Grail 8.0 Image courtesy of Canyon
NOTE: Large doses of "my opinion" will be handed out in gloppy dollops today. You've been forewarned.....

Canyon Bikes is a German outfit that is a "disrupter" in the bicycling marketplace. They are a very well engineered and produced bicycles sold 'consumer direct", meaning- this won't be sold through a local bike shop. I don't mind their business model, so I've no axe to grind there, but that is a huge part of Canyon's DNA and something that needs to be thought of whenever you see their bicycles. In some ways, the "checks and balances" that a traditional retail model brings to design choices is not present with Canyon. That can be a good thing or a bad thing.

That said, here is my take on Canyon's gravel bike, the "Grail". Besides the obvious religious reference the name brings up, it also conjures up the thought of earnest pursuit and desire. An interesting moniker for such a bike. Unless Canyon thinks this is the "holy grail of gravel bikes", in which case I'm going to strongly disagree. I'll get to that later......

Of course, the bike is carbon fiber, a fact barely mentioned by most media coverage of the bike so far. I looked at a few reports, but this one from Cyclingtips is the best, most detailed I've found yet. Then again, with the oddball "Hover" handle bar/stem system, one might be forgiven for focusing on other fare here. Yes, that's an innovative take on vibration management. Yes......it is also proprietary. That can be good or bad. A few media folks have already stated their misgivings on the design, which may reflect deeper negativity towards the design, since when your host flies you out to a swank media camp for the unveiling, it isn't easy to be harsh on the product. At any rate, early commentary by others is interesting in that it doesn't go all in for the Hover system.

A look at how the Hover bar geometry works in relationship to traditional set ups. Image courtesy of Canyon
I won't get into details about the design. Go read the Cyclingtips article, but the bottom line here is either it fits you, you like it, and you won't ever want to change, or it is a big ask from Canyon to have folks compromise on fitting and ergonomics. I'm betting on the latter, but I still tip my hat to Canyon for trying something different. Beyond the striking, shocking design, here is my take on the Hover Bar system, and that will lead into why I feel Canyon missed the boat on the geometry here.

First off, they tell us that the Hover Bar is most comfortable when you ride on the hoods or even more so with your hands nearer to the stem. This is very traditional roadie positioning for rougher sections of riding in road races. Okay, fine, but.......those sections typically don't last a long time. Obviously, if road races were chock full of sections so rough that riders needed to use this position to survive them, and sit upright, not being very aero, then we would see a sea change in design to allow for more aero positioning in the drops. In fact, that's how road racing was pre-World War II. Front end design was extremely different then as compared to today.

In gravel racing, the "rough sections" are often times the entire course. Then we throw winds into the equation. If you are thinking about racing and sitting upright to make the bars work their best on this Canyon you won't be cheating the wind like the other riders around you. Even having to sit on the hoods all day isn't optimal, so Canyon's claims of great compliance may be true, but not entirely practical.

Secondly, this also leads to Canyon's choice of traditional road geometry in the front end. Weight off the bars and on your butt allows for the use of a steeper head angle with a shorter offset fork, which according to the numbers posted in the Cylingtips article, I think they are using here. That's fine until you weight the bars and the front wheel gets planted. The steep head angle (stated at 72.5°) with the short offset will make impacts want to "tuck the fork under" the rider. This was what was wrong with 29"er geometry in the beginning. Designers wanted a quicker feeling front end for 29"ers so they steepened the head angles and used the shorter offsets to achieve that. They were successful, but when used in practice it was a horribly unstable, harsh, crash prone way to get better handling due to the way forks would want to bend backward under impact, effectively making the trail figure less and therefore more unstable.

This problem was solved by using longer offsets with slacker head angles, putting the fork more in line with impacts and ridding the bikes of the mechanical trail issues while riding. This is exactly what is going on with the Canyon bike. They are effectively doing the "29"er v1" geometry mistake for a bike that is meant to be ridden in rougher terrain. The trail figure they reached is fine, but just like early 29"ers, when the rider is in the drops and fighting rough, gravelly roads in a headwind, this bike won't handle as well as a bike with a slacker head angle and longer offset with similar trail figures. Having that front wheel "out there", floating above the gravel instead of digging in is also a factor to consider here.

Otherwise I like the deep bottom bracket drop and chain stay length looks fine. The tire clearances aren't optimal, but if this is a racing bike then......fine. If it is a do everything-go anywhere at anytime bike, well then they screwed up here. You decide what they mean by limiting tire/mud clearances.

Bottom line- A striking bike that will have its fans but misses on a few key points in my opinion.


The Canyon Grail Gravel Bike: My Take

Canyon range topping Grail 8.0 Image courtesy of Canyon
NOTE: Large doses of "my opinion" will be handed out in gloppy dollops today. You've been forewarned.....

Canyon Bikes is a German outfit that is a "disrupter" in the bicycling marketplace. They are a very well engineered and produced bicycles sold 'consumer direct", meaning- this won't be sold through a local bike shop. I don't mind their business model, so I've no axe to grind there, but that is a huge part of Canyon's DNA and something that needs to be thought of whenever you see their bicycles. In some ways, the "checks and balances" that a traditional retail model brings to design choices is not present with Canyon. That can be a good thing or a bad thing.

That said, here is my take on Canyon's gravel bike, the "Grail". Besides the obvious religious reference the name brings up, it also conjures up the thought of earnest pursuit and desire. An interesting moniker for such a bike. Unless Canyon thinks this is the "holy grail of gravel bikes", in which case I'm going to strongly disagree. I'll get to that later......

Of course, the bike is carbon fiber, a fact barely mentioned by most media coverage of the bike so far. I looked at a few reports, but this one from Cyclingtips is the best, most detailed I've found yet. Then again, with the oddball "Hover" handle bar/stem system, one might be forgiven for focusing on other fare here. Yes, that's an innovative take on vibration management. Yes......it is also proprietary. That can be good or bad. A few media folks have already stated their misgivings on the design, which may reflect deeper negativity towards the design, since when your host flies you out to a swank media camp for the unveiling, it isn't easy to be harsh on the product. At any rate, early commentary by others is interesting in that it doesn't go all in for the Hover system.

A look at how the Hover bar geometry works in relationship to traditional set ups. Image courtesy of Canyon
I won't get into details about the design. Go read the Cyclingtips article, but the bottom line here is either it fits you, you like it, and you won't ever want to change, or it is a big ask from Canyon to have folks compromise on fitting and ergonomics. I'm betting on the latter, but I still tip my hat to Canyon for trying something different. Beyond the striking, shocking design, here is my take on the Hover Bar system, and that will lead into why I feel Canyon missed the boat on the geometry here.

First off, they tell us that the Hover Bar is most comfortable when you ride on the hoods or even more so with your hands nearer to the stem. This is very traditional roadie positioning for rougher sections of riding in road races. Okay, fine, but.......those sections typically don't last a long time. Obviously, if road races were chock full of sections so rough that riders needed to use this position to survive them, and sit upright, not being very aero, then we would see a sea change in design to allow for more aero positioning in the drops. In fact, that's how road racing was pre-World War II. Front end design was extremely different then as compared to today.

In gravel racing, the "rough sections" are often times the entire course. Then we throw winds into the equation. If you are thinking about racing and sitting upright to make the bars work their best on this Canyon you won't be cheating the wind like the other riders around you. Even having to sit on the hoods all day isn't optimal, so Canyon's claims of great compliance may be true, but not entirely practical.

Secondly, this also leads to Canyon's choice of traditional road geometry in the front end. Weight off the bars and on your butt allows for the use of a steeper head angle with a shorter offset fork, which according to the numbers posted in the Cylingtips article, I think they are using here. That's fine until you weight the bars and the front wheel gets planted. The steep head angle (stated at 72.5°) with the short offset will make impacts want to "tuck the fork under" the rider. This was what was wrong with 29"er geometry in the beginning. Designers wanted a quicker feeling front end for 29"ers so they steepened the head angles and used the shorter offsets to achieve that. They were successful, but when used in practice it was a horribly unstable, harsh, crash prone way to get better handling due to the way forks would want to bend backward under impact, effectively making the trail figure less and therefore more unstable.

This problem was solved by using longer offsets with slacker head angles, putting the fork more in line with impacts and ridding the bikes of the mechanical trail issues while riding. This is exactly what is going on with the Canyon bike. They are effectively doing the "29"er v1" geometry mistake for a bike that is meant to be ridden in rougher terrain. The trail figure they reached is fine, but just like early 29"ers, when the rider is in the drops and fighting rough, gravelly roads in a headwind, this bike won't handle as well as a bike with a slacker head angle and longer offset with similar trail figures. Having that front wheel "out there", floating above the gravel instead of digging in is also a factor to consider here.

Otherwise I like the deep bottom bracket drop and chain stay length looks fine. The tire clearances aren't optimal, but if this is a racing bike then......fine. If it is a do everything-go anywhere at anytime bike, well then they screwed up here. You decide what they mean by limiting tire/mud clearances.

Bottom line- A striking bike that will have its fans but misses on a few key points in my opinion.