Newsletter Issue No. 5 - February March 2002
...and do we have issues!
www.mtbkanata.com

In this edition:

News From The Editors
The Wrench (Maintenance Tips & Tricks)
Featured MTB Website(s)
Featured Products (Hope C2 Disc Brakes)
Flat Tire Award Nominations
Environment
Critter Report
Ride Review
The Question - this issue
The Web


News from the editors: 

     Howdy All!  I'm back writing for the Editors... (Eric and Myself).  Been a crazy month at the website... we have doubled our forum traffic (thanks to our friends at mountainbike.nl) and have released another successful video!  Another feature we have added this month, is a Discussion Area in the Forums for the discussion of the newsletter.  You can comment on any story we have, or you can send in your suggestions, or just see what others are saying.  You can access the forum by clicking on the following link: February 2002 Newsletter

     We are also listed on the Top 50 Sports Sites...  You may or may not have seen the small icon on the main page.  What this is, is a place for sports sites to offer their link in hopes of driving more targeted traffic to their site.  We are listed under the Cycling Section.  If you feel that this site is worth a vote, click on the button below for us.  You will not only help us rank higher on the cycling page, but you will also see a listing of hundreds of sports sites!  The click will open a new window for you too!  If you do choose to click, please only click one time.  We do not want to inflate our rating just to be the top!

     Hope you all enjoy this months issue!

-Joe Elliott

Some follow-up:

We missed our self-imposed deadline of the 15th of the month for a February Newsletter... then we missed February altogether... we're getting back on schedule with this being our March issue. This issue has some less than biking related stuff in it but hey... this season has been "biking deficient" in general.

As Joe mentioned above our Online forums are actually being used... we've caught the attention of some local freeriders which should help offer a bit more variety in the forum topics and make for  a far more interesting season of video.

- Eric Twers  

Feature Product:

DVD includes Kranked I (Live to ride), II (Trails from the Crypt) and III (Ride Against the Machine).  DVD is NTSC, and non-region specific.  (I picked up my trilogy from Alan last week... a great addition, or way to start your DVD Mountain Biking collection!

Video's sold through www.spokewrench.com - Email Alan for more information.


Wrench:

    Our local wrench will try to answer all reasonable questions related to maintenance tips and will provide one article each issue on how to perform some type of maintenance. Send your suggestions for articles to wrench@mtbkanata.com 

The Official Eric's Marin Rift Zone weigh in! (More bikes next month)

Peter brought over his digital fish scale and we had a go at weighing the "beast". For those unaware of the beast, it's my 1998 Marin Rift Zone (frame) with a 2002 RockShox Psylo SL and just about anything else under the sun bolted to it. Full spec available here.

The bike is designed to be a heavy duty XC bike, what the real magazine folks would call "enduro" or a "trail" bike. The bike has been weighted and comes in at 15.3 kg  (33.8 lbs.) as it was running last season.

Since our last newsletter we had A QUESTION!!!!

Ok. so it was a BTW part of an e-mail back and forth with me as a carbon copy... but I'll take what we can get!

From "Castor" at mountainbike.nl:

"...what do you think of a Santa Cruz Superlight? It is said to be an XC bike with a bit of freeride flavor. As you have seen the Dutch countryside, do you think it's OK? Or should I consider a RM Slayer or a Specialized Enduro? I'd like your opinions...
(PS I hope to complete the future bike with a Psylo SL) TIA!"

The analysis:

Being a "geek" I first look at this as a choice between three different suspension designs.

Santa Cruz Superlight - high pivot "monoshock" swingarm

Advantages:

  • Very low maintenance… just remember that it’s one MAIN pivot… the shock has two pivots on it too… advertisers get to call it a single pivot… mechanics have to realize that it’s still has three
  • Pivot alignment with the middle chainring reduces pedal induced "bob" for most riding.
  • Shock is protected from the rear wheel "spray path" by the seat tube

Disadvantages:

  • The suspension actually is trying to extend in the granny gear and compress in the big ring (but not that much
  • Shock is driven by a rotating swingarm – shock activation is not linear
  • Chain "grow" during suspension action*
  • Counter intuitive wheel path (up and slightly forward)

Specialized Enduro - Host Link 4-bar suspension

Advantages:

  • Virtually zero chain grow
  • "Impact applicable" wheel path (up and slightly back)
  • shock activation rate profile can be widely tuned (at design time) and can even be modified through linkage changes

Disadvantages:

  • Pivots… count ‘em: 5 "advertised" + 2 for the shock
  • Shock partially exposed to the rear wheel "spray path"

RM Slayer - Low pivot modified 4-bar

Advantages:

  • Low pivot remains active during pedalling
  • shock activation rate profile can be widely tuned (at design time) and can even be modified through linkage changes
  • Shock is protected from the rear wheel "spray path" by the seat tube

Disadvantages:

  • Modified 4-bar: translated = NOT 4-bar… the bike is simply a "swingarm" bike with a fancy linkage to drive the shock – this isn’t a "snob" thing, it’s reality…
  • Chain "grow" during suspension action*
  • Counter intuitive wheel path (up and slightly forward)
  • Pivots… count ‘em: 5 "advertised" + 2 for the shock

 

* on my Marin this chain grow is significant enough that if I’m hopping in place, the cranks will actually back pedal because of the freehub ratcheting... but think of how often you spend your time hopping in place

It really comes down to what you want…

If you ONLY consider suspension design then the choice gets easy:

Lower maintenance over suspension performance: Santa Cruz Superlight

Suspension performance over lower maintenance: Specialized Enduro

If you can’t decide which of the above is more important than GOOD! Get all this engineering out of your head and pick the bike with the geometry (fit) that you like…

When I made the switch to full suspension the Marin Rift Zone was the perfect bike for me since in it’s stock form the geometry was identical to my Marin Muirwood hardtail…

As far as suspension designs go, if I was going to go through the trouble of ordering the tubing from Easton and buy a TIG welder I would either be building a "Virtual Pivot Point" suspension design or a Lawhill Design 4-bar. Until then for me the single pivot "monoshock" works just fine!

(Hey, where is the B*Link info Eric?!?  - Joe :)  )

Article Follow-up (March 16th 2002):

Well... Castor read the article and after careful thinking, calculating cost, determining what dealer could provide the best and most accessible service, comparing the shock options/limitations, related outstanding recalls and even considering the aesthetics (remember, we only looked at rear suspension design above) felt like he went "Against the grain" and now has a 2002 Rocky Mountain Slayer Limited Edition frameset! 

The best part is Castor's getting the best bike, not just of the three above, but of all time... he's getting the one he wants!

Thanks to Castor for giving us the feedback, reminding us of many of the other things you should consider when buying a bike and, as "Dutch as He Wants to Be", for "Stimulating the Canadian Economy"...

and a P.S. to Joe... I limited this article to Castor's three choices... if you want a comprehensive analysis of available suspension designs, including the "B*Link™" dropout-flex-pivot "modified 4-bar" MacPherson-esque non-linear hiccup-link driven shock suspension (I made up some of those terms) then I'll get Mardi to drive the CAD while I do the Newtonian vector force analysis... don't say I didn't warn you! 

This issue's "Sneaky Tip"

Don't be an idiot.

Now for the details:

We set out to photograph a full rebuild of my 2002 Psylo SL:
Pure Damper
U-Turn assembly
Bushing check
XXX-Seals service
Oil bath refill

But we stopped photographing when it came time to reinstall the U-Turn assembly. Canada had just won the Olympic gold medal in men’s hockey... we were listening to the after game coverage... I cross threaded the top-cap on the U-Turn assembly... only the first part of the thread was damaged but it took much work, manipulation and many "magic words" before the cap seated properly...

When Fox brags about their "all-aluminium-hardware" they really deserve to do so...

All jokes about my mechanical skills and Canadians/Hockey aside:
BE CAREFUL with anything plastic AND threaded!

And remember: Hockey and Fork Rebuilds DO NOT MIX!

On a positive note:

  • the Pure system oil was really clean and water free

  • the Pure tube is made to a phenomenal tolerance (but very thin-walled)

  • the stanchions were in great shape

  • the bushings are fine

  • the U-Turn assembly is still looking good (some scratches on the plunger shaft to watch)

  • Separate compression and rebound damping shim-stack valves look and work as cool and sophisticated as the hype would have you believe... (sure beats the old "serviceable" Judy cartridge and especially the C3 unit!)

  • Joe got to feel the weight of magnesium sliders removed from the fork - you should have seen the look on his face!


Coming soon:

Spring in Canada!

- Eric Twers  


Featured MTB Website(s):

 
Click on the logo above.  Site opens in a new window

    WOW... What else can I say?  How many MTB sites are there on the internet?  Well, if you visit this site, you'll know!  Bikesutra.com, Great Links, Great Karma... that is an understatement!  The nice thing about the links here, is that they are all categorized and well laid out.  Besides the links, Bikesutra also has informative articles and feature stories to keep you up to speed on the world of cycling.    

     Take the second to check this site out!  I know you will not be disappointed!

- Joe Elliott


Featured Product:

Hope C2 Hydraulic Disc Brake

     You know, there was a time that thought Disc Brakes where all hype... but when you get a chance to ride them all that speculation quickly disappears!  I recently purchased the brakes from Alan at www.spokewrench.com, the one and only place to get cool bike components!  Eric and Alan also built the wheel - Sun DS-1 XC Rim, Sapim spokes and a Shimano XT Disc hub... very sweet.

     First impressions: Since it's still snowing here, I took the bike out for it's first ride in my parking garage... certainly not North Shore, but a kilometre of warm dry cycling bliss!  The modulation and control are paramount! (How's that for a review word)?  You want to stop fast, fine... you want to stop slow, fine... you want to endo down the ramp, no problem... you provide the courage and the balance, the brakes will make it possible.

     Since I haven't been on the trails yet, I'll have to wait until a future newsletter to give a full report.  Also, in the next couple weeks, I'll be installing (which means Eric will be installing) the rest of the package... another Hope on the back, Sun rim and XT hub.  You'll be hearing a lot from me in the future!

- Joe Elliott 

2002 Shimano XT Shifters

     So what's in a shifter?  Well, I guess as long as it changes the gears when I want it to, it's alright... right?  Well, what about feel?  To me, that's half the battle!  I've been using Shimano LX shifters since last year, and with the disc upgrade have moved to the XT model.  Just by playing with them in the garage and unmounted in my hand, I can tell you that these feel great!  The click is precise... the distance to click is right, and the feedback to your hand is perfect!  Now, this might also be because of the new cables and sleeves, but, whatever... they are definitely an upgrade in look and feel!  

     I'll have to give an update in a future newsletter once I have abused the shifters for awhile on the trail... but for now, everyone is smiling!

- Joe Elliott

Not Really Features, but Product Reviews!

The list of reviews is slowly growing... I can only review so much, so if you have a product you have reviewed, send me the details, and I'll make a page for it!  webmaster@mtbkanata.com

Review 1 - Sigma Sport Cycle Computer
Review 2 - Total Air Fork/Shock Pump
Review 3 - Hammerhead Bike Roof Rack
Review 4 - Race face Aquanot Glove
Review 5 - Park Tools Bike Stand


Environment:

Winter time Drama:

Still lots of fun with the Skiers vs. Mountain Bikers controversy...   

Well this has been a lousy season for XC skiing and we've seen some of the frustration directed towards the presence of other trail users... I figure that we have two options at opposite ends of the range of possibilities that would resolve this:

1. Skijorers, Dog-sleders, XC Skiers, Snowshoers, Hikers, Birdwatchers, Photographers and other artists, Bikers and what-have-you all just drop the labels and realize that we're TRAIL USERS.

2. Take a lesson from made for TV wrestling events and lock us all in an arena and resolve this "roller-derby-style"... (I'll be there with spiked tires on my bike and a ski pole in hand)

Ok... I've vented, I'm back to my "happy place"...

Along the topic of frustration - which I will keep within the category of "Environment" - it looks like a regular frustration induced event: "Snow Jump" will be cancelled for 2002 due to lack of, well, snow. That ludicrous lack of snow, that I personally still believe was the root of conflict on the trails this winter, has left us looking at what might be an early biking season... with that in mind please review the articles on trail erosion from previous MTBKanata newsletters, look into groups such as IMBA's rules of the trail and guidelines for "treading lightly" and sign up for a local trail maintenance day!

Last year, giving up one perfectly good day of biking to help others move (literally) tonnes of stone, shift dirt and redirect traffic flow to reduce trail damage paid huge dividends... 

Even if you can't find out when the local trail maintenance day is please follow the example of the bikers that were having a great ride when they passed by the trail maintenance crew. They stopped a great ride to help with the task of moving that previously mentioned tonnes of stone to build up a section trail that had previously be "accepted" as being underwater from August to July.

- Eric Twers  


Critter Report:

Last issue we told you of an unconfirmed sighting of a seldom seen critter, the ermine.  We made sure to tell you that although "cute" they were described as aggressive carnivorous predators. This newsletter I wanted to make sure you learned of another aggressive carnivorous predator, one that is far more often seen by the MTBKanata crew. The Phi.


(File photo)

Phi is a female tabby cat about 8 years old. She looks cute and shows interest in anybody that comes by our place but should be treated with the respect that you would show a runaway buzz-saw blade.

With those that Phi has become accustomed, she is quite tolerant (sociable is a luxury afforded only to me and recently Mardi). There have been many great Phi stories to tell including Dan, all colour drained from his face, asking me to go and retrieve his wallet from Phi. Dan agreed that she could keep the cash if he could get his credit cards, drivers license and other ID back.

Just a reminder in general that critters are just that, critters. Domestication has bread out many violent attack characteristics and certain animals have a general history of cohabitation with humans (particularly cats) but remember that each critter must be given the respect it deserves... All folks that have visited my place know (or learned very quickly) that Phi decides with whom and when she will "play nice".

Always remember to not spook animals on the trail (in addition to this not being "nice", a startled animal may behave very unpredictably) and always talk to the human companions of domesticated critters before approaching.

Last reminder: if Phi is sitting on the front hall table beside your car keys, she's telling you that she already owns your car, if you reach for the keys she'll take your hand too.

- Eric Twers  


Ride Review:

Hmmm, other than riding in my Underground Garage, there has not been too much going on.  Still waiting for the first rains to wash the salt away before hitting the roads.  Tell you what, rather than post a Ride Review, I'll post the survey results!

  • Looks like most people Ride XC on our site.. although there are quite a few freeriders!

  • People ride a couple times a week (Must be due to the cold out...)

  • The favourite part of mtbkanata.com is a toss up between the Videos, Online Forum and Event Calendar!  Good to know that people are using all areas of the site!

Thanks to everyone that took the survey.  I'll come up with a new one and post the results in the next newsletter. 

-Joe Elliott


Flat Tire Award Nomination:

About the "Flat Tire Award":
You're having a great ride, the group is fairly well matched in skill and fitness, it's a social group, laughs are had by all... then it happens... someone gets a flat tire. Even the most social, happy group all stare at the ground and say "oh gosh" (Ok they don't say that, but you get the idea). Everyone will stop and offer to help repair the damage but it still sets the ride back. The award isn't meant as a shot at anyone that's got a flat tire on a group ride, the person getting the flat isn't (usually) at fault, it just happens. This award is so named because of the same "stare-at-the-ground-muttering-oh-gosh" that happens when someone close to biking does something really dumb.

Category:
Least appropriate use of a material in an otherwise well thought out design

I would like to thank RockShox for their use of plastic top caps and my own carelessness for this nomination. What is with the plastic top caps?

Category:
Most compelling reason to have flat tire awards for other industries

First, some background. I have a job like many others where I have my official role and my unofficial role. My official role is to "do stuff" (a recent build-up of "stuff" is the prime contributor to the fact that there was no February newsletter). My unofficial role is to be a sardonic smart-ass (this role was self appointed). 

I'm at work when I get back to my desk to see an e-mail from one of the "Incident and Problem Managers" located in Calgary. The subject says only: "Remedy Down - No Ticket". A failure of the Remedy application, being the ticket tracking system, would without doubt be something that an Incident and Problem manager would have to track and report, but as this IS the tracking system it would be self evident as to why a ticket had not been cut.

Eric, the Sardonic Smart-ass, is on the case! Within three (3) minutes of the e-mail being delivered, I call Michelle (the IPM) in Calgary:

  • Me: "It's Eric, from the Ottawa centre"

  • Michelle: "It would be."

  • Me: "Remedy down... dash... no ticket"

  • Michelle: (mumbling - probably still about it being me on the phone)

  • Me: "You want to take bets on how many people ask you WHY there isn't a ticket?

at this point I think I'm really clever, laughter is had between us it's the equivalent of a good ride...
then "Pffft - Hisssss":

  • Michelle: well the "transportation" desk sits right next to me, and they've already asked WHY.

If the enjoyment I get from my sardonic wit was my bicycle, this incident was, without a doubt, it's flat tire.

- Eric Twers


The Question - this issue: 

Last Month's Question:

Manitou Black Fork... Reverse Brake Arch Technology.  Okay, I saw this for the first time at Full Cycle on Bank Street... Thinking they just put the fork on backwards, I had to get a closer look.  This fork looks strange, but really, it's quite amazing what they have done!   By moving the arch, they made the fork 50% more rigid (not travel, but unwanted lateral motion).  Check out http://www.answerproducts.com/forks/black/superair/info.htm you can see the fork for yourself... and also, check out the new line of Gary Fisher's bikes... They are equipped with the Black for 2002.  Anyway, it's good to see the MTB products revolutionizing the industry, rather than just taking Motocross and sizing it down... (Which is cool too..)

The question is: What do you think?  Do you think that Motocross is where MTB should be going for inspiration... or are there other areas to look... or do you think that MTB should branch off and develop it's own hardware?  

 - Joe Elliott 

Answer(s) to last issue's question on Motocross influence on MTB technology:

I think Joe touched on the approach that should be taken to technological advancements when he asked if MTB should use it's own research instead of just sizing down Motocross technology. The two technologies are now very similar for some obvious reasons but let's look at the differences we should remember:

A motocross bike is mechanically powered, a mountain bike is human powered.

Sounds like a simple equation where you can choose to say: "well then, make the weight proportional to the available power and expected performance requirement and you're set". but you have to remember that internal combustion engines and muscles have different "power curves" and performance characteristics. Where a motocross bike can be "hopped" by holding the clutch, red-lining the RPM and making some mechanic smile with the smell of burning clutch plates mountain bikes have a different method of "launch"... yeah... no immediate conclusions about which technology is applicable for cross over from that but so long as people keep that in perspective we'll do better.

Some of the places where I'm personally glad motocross technology was incorporated after being scaled down:

  • 4-piston open system Hydraulic disc brakes

  • inverted long travel forks

  • "through axle" technology

  • realizing that sprung vs. un-sprung weight matters

  • rear swing-arm suspension

  • Cartridge and Open Bath hydraulic suspension damping

  • use of an internally geared hub as a DH bike's "gearbox"

Some places where we've set out on our own:

  • Suspension lockout

  • Quick release wheels

  • Ceramic braking surfaces for rim brakes

Some things that "may" not cross over very well:

  • use of floating calliper mount activation of hydraulic force transfer to activate the less applied brake (I've only heard about this but it involves cross-plumbing the front and rear brakes and using the pressure of one applied brake to activate a third piston to drive the braking pistons in the other calliper)

Some places where Bike technology may influence motocross:

  • Two wheel drive (ok this is purpose specific and a bit of a stretch)

Before incorporating technology from ANY other source we should look at two things:

  1. does it adequately answer a need that we have?

  2. does it highlight a need we didn't even realize that we had?

Just realize that motocross technology isn't the only place from which we have "stolen" technology.

Easton's phenomenally worked/extruded/butted tubing is made possible because of a "need" to produce an aluminium shaft for archery arrows.

If you look at a Lawhill 4-bar rear suspension and can't see the resemblance to the auto industries tried and true a-arm/steering knuckle/Mac Pherson strut... well good... if you see the cross planar interpretation of the wheel path application... stop reading this and go ride!

- Eric Twers  


Dream Bike:

Okay... so no one has a dream bike... that's cool... we'll start this back up in the summer.  In the meantime, if you have a dream bike, send it to me (Not the bike!) joe@mtbkanata.com

Video's sold through www.spokewrench.com - Email Alan for more information.


The Web:

     Well, this month, it's my turn!  Things are always changing here at mtbkanata.com.  We now have a bit of a following for our videos, and my web server can really feel it!  over 30GB have been downloaded in Video alone in the last few months... and our newest video "The Good The Bad and Their Face Plants" was downloaded over 200 times in the first few weeks alone!  I also added a PHP counter to the video page... that way you can see how many times a video has been enjoyed (or mocked) from our server.  

     On the web server side... we had a few hiccups this month due to DNS servers in the States which seemed to drop our domain.  But, Alain at www.aspcanadahost.com smoothed everything over and upgraded our web hosting service to make up for the few days of repeated outages.  Thanks Alain!  

     Borrowed Space - We also devoted a few MB of space for www.spokewrench.com to host their picture gallery... you can check it out by visiting spokewrench and clicking on the photo gallery link.

     Hardware Repairs - I also had to replace a router in January between the internet and my Video server.. so that caused a day or so of outages... all-in-all though, January was a good month!  Out stats where as follows:

Server Activity Totals for Period:
 Total sessions served :   5711 
 Total hits made on server :    84839 
 Total page view hits :    15590 
 Total non page view hits :    69249 
 Total time spent by all sessions :    601301  seconds 
 Total bandwidth :    880998.15  kilobytes  
 
Session Averages for Period:
 Total sessions served :   5711 
 Average hits per session :   14.86 
 Average page views per session :   2.73 
 Average time spent per session :   105.44  seconds 
 Average bandwidth usage per session :   154.26  kilobytes  

- Joe Elliott



Make sure to visit http://www.mtbkanata.com for all your mountain biking needs!
Please forward this newsletter on to any friend who you think may want to join!
Any suggestions, or articles you would like to submit?  Send them to:
newsletter@mtbkanata.com

Missed a newsletter?  Check out the Archive at: www.mtbkanata.com

To unsubscribe send an email to: newsletter@mtbkanata.com

The MTBKanata.com Newsletter is © 2001 MTBKanata.com. All Rights Reserved. No part of this Newsletter may be reproduced in whole or in part without written permission. All guest articles are copyright their respective owners and are reproduced with permission.

 

  

Hit Counter