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Monthly Bicycle Maintenance

Posted by RL Policar On February - 11 - 2007ADD COMMENTS

I found these on TotalBike.com

Chain – Use the “12 links equals 12 inchesâ€? rule. Measurements of 12 1/8â€?+ are grounds for replacement. Use one of our chain wear indicators for a precise measurement. A worn chain will quickly wear your chainrings and cassettes.

Chainrings/Cogs — Inspect for straightness, bad teeth or small chips. Excessive chain suck with a new chain usually indicates that you need a new chainring. Check chainring bolts for tightness using a torque wrench for accuracy. Do not overtighten.

Crank/Bottom Bracket — Check for looseness/smoothness. Remove the chain and spin the cranks around. They should spin freely. If tightening crank bolts doesn’t solve the problem, rework bottom bracket (cartridge or cup-and-seal).

Handlebar — Check for bending or looseness. If it’s bent or if there is any indications of cracks or stress areas, replace it.

Pedals – Check for axle play by wiggling the pedal. Clean and repack bearings once a year at least. Tighten clips and check straps/clips for excessive wear. Clipless folks check release entities for wear/lubrication.

Saddle/Seatpost — Look for saddle rail deformities or cuts in the upholstered material. Lube seatpost liberally with white lithium grease for proper operation. Use electrical tape on small tears.

Wheels — Check rims for cracks, dings, dents, loose or broken spokes or other deformity. True wheels-if you can’t do it yourself, take it to a shop-a trued wheel is a strong wheel. Check hub bearings for smoothness/lack of play.

Disclaimer: All information supplied is for reference only. Have all installations and repairs done by a professional mechanic.

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Contest Winner Kevin Berman

Posted by RL Policar On February - 11 - 2007ADD COMMENTS

See that guy in the snow? Well, that’s Kevin Bergman. He won our Tifosi Optics give away last month and he was kind enough to send us his photo during a snowy ride.

Here’s what Kevin said about the Tifosi Optics he won.

Hey RL,
I finally got to try out the new Tifosi Q3′s on the bike. It warmed up
to the high 20′s, the sun was out a bit and the wind died down. The
trails were really hard packed for the most part so out the bike came.
The glasses worked great, no glare off the snow, quite comfortable, and
look really cool. They also don’t fog up at all, even after I had to stop
and fix a flat I was able to keep them on with no issues.

Thanks again and keep up the great work
Kevin

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Evomo Ranger

Posted by Randy Policar On February - 11 - 2007ADD COMMENTS

The Evomo Ranger shirt came in yesterday and I just had to pimp it out.

Pimpin

I was really impressed with the design. It instantly catches your attention. Obviously, that was the whole idea.

Evomo

For those who do a double take as you pass them by, the Evomo logo is printed on the back as well.

Sleeve

The Evomo Ranger shirt not only looks great but it feels great. You could easily pimp this shirt both on and off the trails.

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How To Install a Chris King Headset

Posted by RL Policar On February - 11 - 20073 COMMENTS

Installing a headset isn’t rocket science. In fact most people can do it with out any special tools. But when you’re dealing with an expensive investment such as Chris King Headset, well you need to install them carefully and with special attention.

Ryan Crump, Service Manager of Jax Bicycles of Fullerton was installing a new headset on a Trek Top Fuel and we were lucky enough to be there to learn from the experience.
Chris King Headset

First things first, you need to disconnect the brakes from your fork. If you disconnect the stem first and your fork drops while you’re holding your handle bars, then you could run the risk of damaging your cables.
chris king headset

Then remove the stem, and see how Ryan is holding the fork. He does this to make sure once the stem is loose, the fork doesn’t drop to the floor.
chris king headset

Remove the old bearing race. You’ll need a Crown Race Puller. But you don’t have access to it,carefully use hammer and screw driver to tap it out.
chris king headset

Install new Chris King bearing race, use Crown Setting tool, CRS-1. Again if you don’t have access to this tool, then carefully use hammer and screw driver to drive in the race.
chris king headset

To remove old head cups, you’ll need this head cup removal tool, RT-1. No tool, make one out of PVC pipe that you cut into similar pattern or use a wooden dowel.
chris king headset

Insert tool, seat it on the cup, tap it with a hammer.
chris king headset

Chris King Headsets need a special adapter 530-2 when using a cup press.

Align “King” logo to your liking. Ryan chose to have it face directly forward. Press one cup at a time. Ryan stated that if you press both cups in at the same time, the headset has a chance of rotating, causing the King logos to be misaligned.

Do the same for the top cup.

Next step is to grease the bearing race on the fork, just a tiny bit right before reinstalling it on the bike.

The last step of course is to reinstall your fork, brakes and stem then enjoy your new Chris King Headset!

I’d like to say thanks to Ryan Crump, Service Manager of the Fullerton Jax Bicycle Center for taking the time to show us how to install a Chris King Headset.

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NiteRider Dual MiNewt Lights First Impression

Posted by Moe Ramirez On February - 10 - 20071 COMMENT

NiteRiders MiNewt

RL and I took to the trail last night. I mounted my NiteRider Dual MiNewt lights on my Cobia 29er. As the name says, these lights are tiny but they really emit a lot of light.

NiteRiders MiNewt

Installation:
The lights are VERY easy to install, they use a unique rubber ring system that attach to the handlebars. This system also makes the lights easy to transfer from bike to bike. My only concern is durability of these rings, time will tell how much use they can take before breaking.

NiteRiders MiNewt

Adjustment: Finding the ‘sweetspot’ with the dual MiNewts can be a little tricky, what sucks is that in order for the lights to be laterally adjusted, one must stop and use a phillips screwdriver to adjust the lights.

NiteRiders MiNewt

Brightness: It is a huge difference riding with the Dual MiNewt lights to my commuter Halogen lights. How do they fare with other LED systems? Check out the following pictures:

NiteRiders MiNewt
Single LED competitor light

NiteRiders MiNewt
Dual MiNewt Lights

My camera is about 2 years old and not equipped for taking pictures in the dark. RL and I came up with this simple comparison test, you can clearly see the difference on the brightness of the lights.

So far I’m very happy with my purchase, the Dual MiNewt are perfect for the trails I ride and for the style of riding I do. If you are a recreational rider, check out the Dual MiNewt, but make sure you get the Dual lights, I can’t see having 1 light as a primary source of light.

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Can a 26 inch tube fit in a 29er tire?

Posted by RL Policar On February - 10 - 2007ADD COMMENTS

If you’re out riding your 29er, you get a flat and don’t have a spare tube, but one of your buddies who rides a 26er hands you a his spare tube. Take it!

I tested this out since I’ve been asked about this subject quite a bit.

Basically it will work as long as you get the tube into the tire and rim. As you can see a 26er tube doesn’t quite go all the way in.

As long as you work it into the tire and rim, you should be able to at least inflate it enough to get you back home.

What I was impressed about was that I got the tire pressure up to 30. I probably could have gone higher but the rim I was using didn’t have a rim-strip.

So there you go, it is possible to use a 26 inch tube on a 29er tire….only for temporary and in emergency purposes!

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Need Some Help Fixing Your Bike?

Posted by RL Policar On February - 10 - 2007ADD COMMENTS


Photo courtesy of Jimlangley.net

Got a mechanical question or would like to learn how to perform some sort of repair? Shoot me an email. I am the resident wrench of MtnBikeRiders.com and would love to help out in any way I can.

If your question is really good, I’ll even post a tutorial on the site complete with pictures and give you, the reader/rider the props for sending in your request.

Heck if you’re in the North Orange County (ca.) area, I’ll be glad to teach you personally.

Send your Emails HERE.

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Protecting Your Chain Stay

Posted by RL Policar On February - 9 - 2007ADD COMMENTS

There are many ways to protect your chain stay. Some have used old inner tubes to wrap them, I’ve even seen old tires used before.

But what works the best in my opinion is using some old bar tape. The bar tape works better because its thicker and softer than an old tube. When your chain hits it, the impact isn’t so bad since it absorbs the energy and dampens the sound.

Below are some easy instructions on how to wrap a chain stay with bar tape.

1. Clean your chain stay.

2. Start wrapping. Nothing fancy needs to be done, just make sure that the tape is wrapped tightly.

3. Then finish it off with some electrical tape.

Here’s a tip for you. If you don’t have any old bar tape or don’t feel like buying any. Just ask your LBS if they have some laying around that they could give away. You only need about 15″ of the stuff.

Have Fun!

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New Product: KMX K-CLASS

Posted by RL Policar On February - 9 - 2007ADD COMMENTS

Today we received the KMX K-CLASS. I suppose the “K” stands for KIDS, since this recumbent trike is made for kids.

Here’s the specs:

The K Class Features

* Self energizing front hub brakes
* Powerful V Brake on the rear
* Balanced front brakes from a
single brake lever
* Park brake on rear wheel which
also allows for easy upright storage
* Compatible with standard BMX parts
for easy upgrades
* Stylish Nylon Mag Wheels
* Ackerman and Center point Steering
* Frame is Powder coated Hi Carbon
Steel Box with Chromed front boom
* Tires are KMX’s own brand heavy
duty compound
* Wheels 20″ Rear Mag Wheel,
12″ Front Mag wheels
* Chainset is a 7-speed Shimano
derailleur, with full chain tube set

What’s cool is the K-CLASS can fit each of my kids without a problem. My children are from ages 5-11 and if you adjust the front boom (cranks) and move the seat around the K-CLASS can accommodate the littlest riders to the the taller ones.

Aleah, the smallest rider, can fit right in.

Breanna, the middle sized one out of my kids fits just right.

Alyssa, the tallest of them, sits in there just fine.

Just to show you how cool the KMX K-CLASS is, I made a video from today’s fun with the kids.

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Review: Fezzari Alta Peak UPDATE

Posted by Jeremy Yang On February - 9 - 2007ADD COMMENTS

Earlier this week, RL & I spent some time tweaking the Alta Peak to fit my dimensions. We initially tried to install a longer stem, but we were missing a headset spacer, so we scrapped that idea.

We then spent some time tweaking the air pressure in the rear shock to minimize pedal bob & adjust the front fork to better fit my weight. These minor adjustment paid off nicely.

Where once I felt minimal pedal bob I now find virtually no pedal bob. When I climb, no bob. When I hammer, no bob. Pedal bob has disappeared to the point that I didn’t lock out the shock on any of my climbs.

Ario 2.2
This simple fix was completed rather quickly with the use of RL’s shock pump. You just find the cap on the shock, unscrew it, put the pump on and pump or release air until desired air pressure is achieved.

We also spent some time fiddling with the front fork. This change was less dramatic but helpful as well. Because RL previously rode this bike, the fork was a bit soft for my tastes. I noticed this when I was climbing on a previous ride. During the climbs, I had the feeling that the front end wanted to lift up. I originally attributed this phemomenon to bike geometry and the fact that the bike was a little too small for me. But after fiddling with the fork, the front end of the bike felt much more planted, even during my climbs. It might not hae been just a size issue afterall.

I guess the moral of this post is that getting your bike fit to you will help you to maximize the abilities of the bike as well as your comfort on the bike. Not doing so can leave you feeling unsure and uncomfortable.

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