ADVrider

ADVrider (http://www.advrider.com/forums/index.php)
-   Sports (http://www.advrider.com/forums/forumdisplay.php?f=72)
-   -   Bicycle thread (http://www.advrider.com/forums/showthread.php?t=150964)

Jeffy 11-16-2010 07:03 PM

Quote:

Originally Posted by trailer Rails
Good thinking, I know people who have been attacked by turkey while riding bikes.

Yeah, they own the hills around here. I've seen a hen on some of the paved trail's too. The flock was pretty big. Only half if it was pictured. The other half was in the valley to the right.

Gummee! 11-16-2010 07:07 PM

Quote:

Originally Posted by Jeffy
Where do I measure the 3mm from?

Tops of the teeth on the outer chainring to the bottom radius of the cage of the front derailleur.

You *may* need a new ft der. That old-skool XT don't have the right radius. Try it first. With the thumbies, you may be OK. Upgrade to rapidfire and you'll have issues with it.

M

Jeffy 11-16-2010 07:14 PM

Quote:

Originally Posted by Gummee!
Tops of the teeth on the outer chainring to the bottom radius of the cage of the front derailleur.

You *may* need a new ft der. That old-skool XT don't have the right radius. Try it first. With the thumbies, you may be OK. Upgrade to rapidfire and you'll have issues with it.

M

I checked the instructions and it actually says how to do that! I would never have noticed though.

I think I'm going to keep the thumbies. If I go Rapid fires I'll probably end up going to 9-speed.

I got the XT derailleur when I got a replacement XT shifter from a guy on MTBR. It's a lot nicer then my old Exage LX.

Gummee! 11-16-2010 07:21 PM

Quote:

Originally Posted by Jeffy
I got the XT derailleur when I got a replacement XT shifter from a guy on MTBR. It's a lot nicer then my old Exage LX.

Yeah it is!

Prolly sometime over the winter, I'm gonna try and make a 'poor man's 2x10' setup. I'll post up info when the stuff gets done.

M

jocflier 11-17-2010 08:21 AM

This is about a mile from my house and I ride by it a couple of time a week.

So sad and it pisses me off at the same time.:cry Be carefull out there everyone.

http://groups.yahoo.com/group/BATN/message/47127

Joc

Jeffy 11-17-2010 03:09 PM

Quote:

Originally Posted by Gummee!
Tops of the teeth on the outer chainring to the bottom radius of the cage of the front derailleur.

You *may* need a new ft der. That old-skool XT don't have the right radius. Try it first. With the thumbies, you may be OK. Upgrade to rapidfire and you'll have issues with it.

M

So the edge of the derailleur should be right above the largest ring when setting the height?

I'm also noticing binding when I shift to the extremes. In granny low, the chain hits the rear derailleur. So I guess there is too much slack on the chain? The old low ring was 28T. The new one is 22T. Also, I'm wondering if I should shim the BB over to the non-drive side. Seems to be over a bit more then it used to which is also causing binding.

Gummee! 11-17-2010 03:29 PM

Quote:

Originally Posted by Jeffy
So the edge of the derailleur should be right above the largest ring when setting the height?

I'm also noticing binding when I shift to the extremes. In granny low, the chain hits the rear derailleur. So I guess there is too much slack on the chain? The old low ring was 28T. The new one is 22T. Also, I'm wondering if I should shim the BB over to the non-drive side. Seems to be over a bit more then it used to which is also causing binding.

You'll hafta pull the cage out a hair to get lined up straight, as well as to set the height. AFA the binding, that's taken care of by the limit screws. I'd bet Park Tools' website has a good demo...

M

Jeffy 11-17-2010 05:31 PM

Quote:

Originally Posted by Gummee!
You'll hafta pull the cage out a hair to get lined up straight, as well as to set the height. AFA the binding, that's taken care of by the limit screws. I'd bet Park Tools' website has a good demo...

M

I think I have it set up OK but it still clatters a bit. The problem I see is the derailleur gears are pitched inwards a bit because it's following the chain stay. The crank is a bit more outboard and so the bottom gear on the derailleur is getting caught on the links in the chain occasionally. Any way to correct this? Shim the crank in? Would this be corrected if I switched to a 9-speed derailleur?

http://lh6.ggpht.com/_NUT3v0pNW04/TO...0/DSC_0061.jpg
http://lh3.ggpht.com/_NUT3v0pNW04/TO...0/DSC_0054.jpg

I also lowered the front derailleur. It's probably more then 3mm but less then 6mm. I can't lower it any further since it hits the chain stay. Shifts nicer though.

http://lh5.ggpht.com/_NUT3v0pNW04/TO...0/DSC_0057.jpg

reed523 11-17-2010 06:27 PM

Looking for maps
 
Hope i'm not disrupting the flow of the thread here but i'm not having any luck anywhere else. It looks like life has smiled on me and i may get to take a cross country bicycle ride next summer:D I'm looking for a set of AC Northern Tier maps http://www.advrider.com/forums/showthread.php?t=636317 . I'm hoping for a used set (re: cheap) as i took a 25% pay cut to get the time to do this sort of thing. Will probably also be in the market for some used bike luggage as well at some point. (rear panniers, handlebar bag w/map pocket, etc).

The biggest ride i've done to date is Oklahoma Freewheel (450 miles) so this is a HUGE step for me.

Brek81 11-17-2010 06:47 PM

Is anyone else thinking about doing ragbrai next summer?

melville 11-17-2010 07:30 PM

Quote:

Originally Posted by Jeffy
I think I have it set up OK but it still clatters a bit. The problem I see is the derailleur gears are pitched inwards a bit because it's following the chain stay. The crank is a bit more outboard and so the bottom gear on the derailleur is getting caught on the links in the chain occasionally. Any way to correct this? Shim the crank in? Would this be corrected if I switched to a 9-speed derailleur?

http://lh6.ggpht.com/_NUT3v0pNW04/TO...0/DSC_0061.jpg
http://lh3.ggpht.com/_NUT3v0pNW04/TO...0/DSC_0054.jpg

In your first pic you may have chainline (chainrings moved outboard) issues or the derailleur hanger may be twisted. More likely chainline.

In the second pic it appears that your chain is too long now that you have the compact crank. The chain should be one inch longer than the length necessary to wrap the big ring and large cog, not running through the rear derailleur.

Jeffy 11-17-2010 08:01 PM

Quote:

Originally Posted by melville
In your first pic you may have chainline (chainrings moved outboard) issues or the derailleur hanger may be twisted. More likely chainline.

In the second pic it appears that your chain is too long now that you have the compact crank. The chain should be one inch longer than the length necessary to wrap the big ring and large cog, not running through the rear derailleur.

I think it's a long derailleur. I did play around with the chain and I think there might be 3-4 links too long. Actually I just noticed, in the pic below the bike is in granny so there is a lot more slack with the new crank. I'll have take the derailleur off and double check.

If the crank is on correct, then how do they get the proper chain line?

http://lh5.ggpht.com/_NUT3v0pNW04/TJ...0/DSC_0018.jpg

slackmeyer 11-17-2010 08:05 PM

Melville's right on the chain thing- big ring + big cog + 1 link (or inch, same thing). To see if your crank is set right, measure the distance from the centerline of your seat tube to the centerline of the middle ring on the crank. Should be 45mm, if I remember correctly. Without being close to that number, you're not going to have good shifting through all gears.

Jeffy 11-17-2010 08:10 PM

Quote:

Originally Posted by slackmeyer
Melville's right on the chain thing- big ring + big cog + 1 link (or inch, same thing). To see if your crank is set right, measure the distance from the centerline of your seat tube to the centerline of the middle ring on the crank. Should be 45mm, if I remember correctly. Without being close to that number, you're not going to have good shifting through all gears.

Thanks! That gives me something to work with. I'll check it in the morning.

Mr Head 11-18-2010 05:20 AM

Quote:

Originally Posted by Brek81
Is anyone else thinking about doing ragbrai next summer?

I want to. Need to figure out the work schedule. I should know after Thanksgiving.

I plan to buy a bike transport box/case. Costs about $450 or so, and $50 each way for the oversized baggage on the plane.

I might blow that part off and ride the Adventure. We'll see how I feel about that.

Last time I was training for this I fell off the mountain bike and broke two ribs. I'm not riding the mountain bike. :lol3


Times are GMT -7.   It's 01:44 PM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014