Showing posts with label motorcycle ergonomics. Show all posts
Showing posts with label motorcycle ergonomics. Show all posts

Thursday 19 August 2021

Kawasaki Concours14/GTR1400 Kawasaki Foot Peg Ergonomics

Taking bend out of the bike: the
changes pegs and bar risers
have made so far.
The Concours 14 is an excellent long distance weapon, but it's built for someone much smaller than me.  When you're tackling motorcycle ergonomics you can't just slide a seat back, you've got to physically change parts, and the Concours parts aren't fit for my intentions with it.  I sold a Honda Fireblade to get this bike and it wasn't a like for like replacement.  If I'd wanted (or been able to use) a full on sports bike I'd have kept the 'Blade, so I'm not trying to pretend the Kawasaki is anything like the Honda.  The side of the C14 I'm interested in is the long distance/two up riding bit.

With that in mind this otherwise stock, low mileage 2010 Kawasaki Concours felt like it was trying too hard to be a sports bike when it simply isn't one.  The Honda only gave up 15 horsepower to the Kwak but was over 100kgs lighter!  After one 2+ hour ride the steering, while quite touring in appearance with long bars sweeping back from the headstock, are way too far forward and low for what I want to use the bike for.  At 6'3" and 250lbs I'm also clearly not the average rider Kawasaki was aiming at with the rider ergonomics.  To solve the lean I put in Murph's Kits bar risers which bring the grips 3/4 of an inch back and 1-3/8 inch up toward the rider.  This resulted in a 3% less lean and they installed very neatly, looking stock.

I could live with the pegs but my knees were feeling it on longer rides and my big feet meant I was sitting pigeon toed while trying to keep my feet off the rear brake and shifter.  What sold me on Murph's Kits rider pegs was the promise of no more awkward, pigeon toed foot positioning thanks to the angle in them.  They were straightforward and quick to install (10 mins?) and reduced knee angle a couple of degrees while also allowing me to rest my big wamps on the pegs instead of having to hold my feet off them awkwardly.  A nice bonus is if I hook my boot heels on the new pegs they drop into the windflow under the bike and feel great in vented boots on a hot day; no regrets with that choice either.

But none of this has helped my passenger feel comfortable on the bike, which was a major reason I pitched the Fireblade for a sports tourer.  WIth the panniers on the Connie leaves no room for passengers with big western feet.  The passenger pegs are also set very high, so high you'd have to be seriously into yoga to look comfortable on them.

Unfortunately, Murph ran out of gas after the rider pegs and doesn't offer any passenger peg alternatives.  A bit of lurking on message boards uncovered VicRay Custom Performance who machine a set of passenger pegs for the Concours 14.  Vic sends these kits out himself and it took a few weeks longer than Murph's deliveries (don't sweat Canadian deliveries if you're dealing with Murph, he's got them down!).  Vic's passenger pegs finally arrived this week and I installed them this afternoon.

The instructions were hand written but the installation was well explained and straightforward.  The quality of the machining is excellent and the extension of the pegs means we should have no more passenger ergonomic headaches while riding with panniers.  The rubber isolation and width of the alternate passenger peg also promises greater comfort.  We've been busy with work (contrary to popular belief, teachers work in the summer), but I'm optimistic about this choice too.  The new passenger pegs fold up neatly and suit the look of the bike.  If you didn't know they weren't stock you'd just assume they are.

The last piece of the puzzle is the seat.  The C14 seat is narrow and gets to be quite miserable on longer rides with an awful lot of pressure on your, um, parts.  Alanna described it as, 'hard on the vagina.", so it's uncomfortable for both rider and passenger.

The last time a poor OEM seat made me sad a Corbin saddle solved the puzzle.  I'd have gone for a used one but they retain their value and the used ones I could find were within a hundred bucks of getting my own custom designed seat.

Pre-pandemic my Tiger seat showed up in a surprisingly quick four weeks.  I'm five weeks into having ordered this time but I fear COVIDtime will strike again and the saddle won't show up for some weeks yet.

The pegs relax the legs and the bar risers ease the crouch.  Big Blue is more comfortable than it has ever been and is starting to show the promise of the touring/sports/muscle bike I was aiming for.  Once that Corbin lands it'll be ready to ironbutt on.





Sunday 11 July 2021

Ergo-cycling: Concours 14 vs Tiger 955i for 6'3" Me

 Cycle-Ergo, the motorcycle ergonomics simulator, is a great online resource for getting a sense of what you'll look like and how you'll fit on a bike.  Unlike cars, your options with bikes aren't as easy as sliding your seat back or adjusting the steering wheel.  To make ergonomic changes on a motorbike you need to change hardware and mechanically adjust it to make it fit.

The other day I was out on my trusty 2003 Triumph Tiger 955i.  I came off a Kawasaki Concours 10 to the Tiger and while the Connie was comfortable, it made my knees ache on long rides.  The first time I sat on the Tiger it felt like a bike built by people the same shape and size as me because it is.  I can go for hours without putting a foot down without a cramp on the Triumph.  This got me thinking about the differences between the big Kawasaki that sits next to the Tiger in the garage these days.

Cycle-Ergo gives me a quick way to check out the differences.  Forward lean is much more pronounced on the Concours 14 (12° vs an almost vertical 4° on the Tiger).  Knee angle is the same and my knees aren't bothering me on the Connie but hip angle is 6° tighter on the Kawasaki which explains the cramps I was feeling after today.

I sold a Honda Fireblade to bring the 1400GTR in and that bike had an extreme 'sports' riding position which was basically like doing a push-up on the bike (you lay on it) - it ain't easy on the wrists.  There are advantages to this aggressive riding position.  When you want to get down to business in corners a forward lean gives you a more intimate relationship with the front end, which is why sports focused bikes tend to sit a rider the way they do.  If I lived somewhere where roads were dancing with the landscape instead of cutting straight lines across it I'd have happily kept the Fireblade, but in tedious Southwestern Ontario it didn't make much sense.

Today I did a 200km loop on the Kawasaki and the constant lean does make it tiresome on the arrow straight roads around here (I have to ride 40 minutes to find 10 minutes of curves).  In the twisties the Concours is much more composed than the taller, bigger wheeled Tiger.  The Concours is a 50+ kg heavier bike but you can see in the animation that it holds its weight much lower than the Tiger.  In the bends today the Connie was fine but the SW Ontario-tedium I have to deal with most of the time has me thinking about ways to ease that lean.

There are solutions to this in the form of 'bar risers' which are blocks of machined metal that you slip in under the handlebars to bring them taller and closer to you so you're not stooped.  For me the lean also means I'm putting a lot of weight on my, um, man-parts, which end up pressed against the tank due to the lean.

Here's the difference between a stock
Concours 14 and the Murph's Kit bar
riser modification.
I had a look around at bar-risers.  There are number of people who put them together including some cheaper Chinese options but I ended up going with Murph's Kits C14 bar risers.  Murph is well known in the Concours Owners Group and has been producing Concours specific parts for decades.  His risers aren't quite as tall as some of the others and look to solve the problem without over-solving it by giving too-tall handlebars that spoil the lines and the purpose of the bike.

The biggest ergo-thing I did on the otherwise well-fitting Tiger was getting a Corbin seat for it which makes it a long distance weapon.  I'll eventually do the same thing for the Connie but I think I can make do with the stock seat this year and then do the Corbin over the winter.  That doesn't stop me from mucking around with the Corbin seat simulator though:



By next spring I'll have a C14 that fits but it isn't as easy as sliding the seat back in a car.  In the meantime we've got the Lobo Loco Comical Rally coming up at the end of the month.  That requires a minimum of 400kms travelled in 12 hours and will need more than that if we're going to be competitive.  I'm hoping my bar risers will be installed and I'll bring the good ole Airhawk out of semi-retirement to keep me limber over a long day in the saddle.

If you're thinking, "oh, a long distance motorcycle rally, that sounds like fun, you're out of luck on the Comical Rally, it sold out!  Lobo Loco is doing other rallies later in the summer though.

Sunday 15 September 2013

Ergo-Cycle

http://cycle-ergo.com/

Looking at a better fit of bike (at 6"3' I'm a bit of a giant on the '07 Ninja 650r), I came across Cycle-Ergo, an online simulator that shows you the shape of any number of bikes and how your frame sits on it.  This is an interesting exercise even if you aren't looking for a new bike.


The FAQ explains that the basic rider model isn't perfect, but

does show you lean angles and other ergonomic considerations in riding.  The feet on the floor option should be taken lightly (the FAQ explains there are too many factors - rider weight, thigh size, seat shape,etc - that can change it), but it still gives you a rough idea.  

If you want to be a lean into it sport rider, then this will show you just how uncomfortable you'll be looking cool.  If you are looking for a long distance multi-purpose (as I am),then this will show me which bike offers me the most natural/classic riding position.



There are a lot of options in the menus to the right, so be sure to play with them.  After you put in the rider height and inseam you can modify various parameters of the stock bike (handlebar locations etc).  It also shows you variations in angle due to seat position.  At the riding school they encouraged me to sit as close to the tank as possible, so I tend to sit forward in the seat.  


I looked up my current Ninja (an '07 650r).  The bike feels too small for me, and it looks it in the diagram.  

I don't find the wrist position overly uncomfortable, even though I am at quite a forward lean angle.  What I do find uncomfortable are how high the pegs are and how bent my legs are on it.  At 75° it's one of the most extreme angles I found in the knees.


My feet are flat on the floor with bent knees.  The low seat means I can stand up at a light with inches of light beneath me.  It's a short bike I have to fold myself onto.  When at speed I'm catching a lot of wind in the face, even with the aftermarket windshield on it.  I have to lay on the tank to get out of the blast.



One of the bikes I'm considering is the Triumph Tiger 800xc.  The seat height on this bike is much (much) higher than the Ninja, and the steering seems to be closer and higher, offering a less stretched forward lean.


Unlike the backward bent legs on the Ninja, the Tiger offers me a more neutral almost 90° leg angle as well.  It looks like it might be a promising fit.



The Kawasaki KLR650 is also short listed as a possible contender.  It too has a tall, upright stance with a more neutral riding position.  At half the price of the (nicer) Triumph I'd also be much less worried about dropping it, which would certainly happen at some point if I'm exploring less paved roads.


As a bike I've actually sat on, I have to say this looks pretty close to accurate.




I ran the simulator with a number of other bikes just to see what various styles looked like.  The vague body shape reminds you that this is a rough simulation, but if you're considering buying a bike why not compare it to what you're on now or what you think would be your preferred style of riding.


I wish I'd have known about this tool when I was first looking for a bike, it would have given me some stats to consider.



The Ducati all-rounder adventure bike - the seat is supposed to be horrible


I've always thought Gixers were cool... painfully cool


Living out my Mad Max fantasies on an Interceptor... worse lean, better on the knees than the Ninja






I was considering this bike last year, but the blandness described  in reviews put me off


I've sat on one of these too - it felt small, it looks small in the picture, but classy!


Another rider at work has one of these, loves it, nice riding position!


The simulator lets you put a passenger on too - this is the Tiger with Max on the back

Here is what I'd look like if Ewan McGregor was my best friend...