Go Back   English Forum Switzerland > Living in Switzerland > Daily life  
Reply
 
Thread Tools Display Modes
  #1  
Old 27.04.2021, 12:34
Member
 
Join Date: Oct 2020
Location: Vaud
Posts: 215
Groaned at 8 Times in 7 Posts
Thanked 92 Times in 66 Posts
Gravity is considered knowledgeableGravity is considered knowledgeableGravity is considered knowledgeable
Bicycle DYI adjustment, Shimano 105

I've just bought a new bike at Ochnersports.ch. It came with the front derailleur completely un-fitted so it wasn't possible to change the front gearing.

This is the first time I bought a bike with such low class of equipment, Shimano 105. Well, I read that overall it's a good class (!) though might be just heavier than Shimano Ultegra with which I am familiar. The bike overall weight is 8.4 kg so I said to myself, that's ok.

I service bikes myself so also this time I would prefer to do it instead of fighting with the shop and risk that they might screw something else during incompetent servicing.

I tried to adjust it following this guide https://www.youtube.com/watch?v=9zZWAUp6oOE

Unfortunately I cannot get it fit for both edge positions without any scratching. I was able to make it reasonably fit where the chain is just slightly scratching the derailleur in both edge positions. I'm really left with doubts, is it just the quality of Shimano 105 class, or something else is wrong. Maybe the cable is wrong, too stiff or something? It seems to be perfectly fitted (the high/low limits) if only I help it with a little push with my finger, so it's like the spring is too weak or the cable too stiff.

At this moment I regret buying bike with Shimano 105 equipment, but I hope I'm wrong about it.

I'm going to look for a more suitable forum, but thanks for any "professional" advise. I'm sure there are also DYI bike geeks here
Reply With Quote
  #2  
Old 27.04.2021, 12:43
Junior Member
 
Join Date: Sep 2020
Location: Vaud
Posts: 88
Groaned at 3 Times in 3 Posts
Thanked 130 Times in 50 Posts
IslanderInTheMountains has an excellent reputationIslanderInTheMountains has an excellent reputationIslanderInTheMountains has an excellent reputationIslanderInTheMountains has an excellent reputation
Re: Bicycle DYI adjustment, Shimano 105

Shimano 105 groupset is a really solid one, you shouldn't have any problems or whatsoever.

By "both edge" you mean cross-chaining e.g. smallest sprocket with smallest chainring? Or smallest sprocket with largest chainring?

I always adjust my shifting by following Calvin's guides from Park Tool, they really are superb!

https://www.youtube.com/watch?v=ZNG7g83lI-s

Last edited by IslanderInTheMountains; 27.04.2021 at 14:01.
Reply With Quote
The following 5 users would like to thank IslanderInTheMountains for this useful post:
  #3  
Old 27.04.2021, 12:59
Ato Ato is offline
Forum Veteran
 
Join Date: Oct 2017
Location: ZH
Posts: 1,332
Groaned at 15 Times in 15 Posts
Thanked 2,461 Times in 1,001 Posts
Ato has a reputation beyond reputeAto has a reputation beyond reputeAto has a reputation beyond reputeAto has a reputation beyond reputeAto has a reputation beyond reputeAto has a reputation beyond repute
Re: Bicycle DYI adjustment, Shimano 105

105 is perfectly good stuff, unless you need competition level bits.
Whilst cross chaining (tsk, tsk) you might have issues, but there should be a click of minor adjustment in the gears.

The one time I screwed up a front derailleur it was due to it being slightly rotated on the z axis, and then when adjusted it rubbed quite a bit until I straightened it up.

Anyways, cycling etiquette states that you must be in the big ring at all times.

Rule 90 // Never Get Out of the Big Ring.If it gets steeper, just push harder on the pedals. When pressed on the matter, the Apostle Johan Museeuw simply replied, “Yes, why would you slow down?” It is, of course, acceptable to momentarily shift into the inner ring when scaling the 20% ramps of the Kapelmuur.
Reply With Quote
This user would like to thank Ato for this useful post:
  #4  
Old 27.04.2021, 13:13
komsomolez's Avatar
Forum Veteran
 
Join Date: Jan 2008
Location: SZ
Posts: 1,635
Groaned at 81 Times in 56 Posts
Thanked 3,064 Times in 1,199 Posts
komsomolez has a reputation beyond reputekomsomolez has a reputation beyond reputekomsomolez has a reputation beyond reputekomsomolez has a reputation beyond reputekomsomolez has a reputation beyond reputekomsomolez has a reputation beyond repute
Re: Bicycle DYI adjustment, Shimano 105

And more generally, Rule No. 5 applies
Reply With Quote
This user would like to thank komsomolez for this useful post:
  #5  
Old 27.04.2021, 13:50
Member
 
Join Date: Oct 2020
Location: Vaud
Posts: 215
Groaned at 8 Times in 7 Posts
Thanked 92 Times in 66 Posts
Gravity is considered knowledgeableGravity is considered knowledgeableGravity is considered knowledgeable
Re: Bicycle DYI adjustment, Shimano 105

Oh, by edge cases I meant:
1. high front + smallest rear
2. low front + biggest rear

For some reason I can't get it right to avoid (both at the same time):
case 1. chain scratching right edge of the derailleur
case 2. chain scratching left edge of the derailleur

In both position there should be still a little gap (~0.5 mm) between the chain and the derailleur after shifting. I can achieve that if I push the derailleur by hand after shifting, so clearly something doesn't move fluidly enough

Quote:
View Post
By "both edge" you mean cross-chaining e.g. smallest sprocket with smallest chainring? Or smallest sprocket with largest chainring?
Reply With Quote
This user would like to thank Gravity for this useful post:
  #6  
Old 27.04.2021, 14:12
Member
 
Join Date: Oct 2020
Location: Vaud
Posts: 215
Groaned at 8 Times in 7 Posts
Thanked 92 Times in 66 Posts
Gravity is considered knowledgeableGravity is considered knowledgeableGravity is considered knowledgeable
Re: Bicycle DYI adjustment, Shimano 105

Ok, later I'm going to move it a bit up to 2-3 mm, as mine sits about 1 mm above the teeth, and I'll double check if it's parallel to the teeth.

Quote:
View Post
I always adjust my shifting by following Calvin's guides from Park Tool, they really are superb!

https://www.youtube.com/watch?v=ZNG7g83lI-s
Reply With Quote
  #7  
Old 27.04.2021, 14:13
Ace1's Avatar
A modal singularity
 
Join Date: Sep 2011
Location: Morgins, VS (and Alsace)
Posts: 9,255
Groaned at 425 Times in 265 Posts
Thanked 15,884 Times in 6,835 Posts
Ace1 has a reputation beyond reputeAce1 has a reputation beyond reputeAce1 has a reputation beyond reputeAce1 has a reputation beyond reputeAce1 has a reputation beyond reputeAce1 has a reputation beyond repute
Re: Bicycle DYI adjustment, Shimano 105

You could do worse than read up the best source of cycle maintenance information available on the internet, that of the late lamented Sheldon Brown. Simply the best, in my view.
https://sheldonbrown.com/front-derailers.html
Reply With Quote
The following 4 users would like to thank Ace1 for this useful post:
  #8  
Old 27.04.2021, 16:04
Neko's Avatar
Member
 
Join Date: Sep 2017
Location: Vaud
Posts: 224
Groaned at 0 Times in 0 Posts
Thanked 176 Times in 107 Posts
Neko is considered knowledgeableNeko is considered knowledgeableNeko is considered knowledgeable
Re: Bicycle DYI adjustment, Shimano 105

Today's Shimano 105 is great, it's almost Dura-Ace/Ultegra in terms of function, it often uses some heavier pieces in places which makes it cheaper.


The shift lever will let you move between the two chainrings with a big throw but normally you can also make a micro adjustment with the lever when the chain rubs, it's a small click in each way.



This video has some specific help for the R7000 105 front mech: https://www.youtube.com/watch?v=9zZWAUp6oOE
Reply With Quote
The following 3 users would like to thank Neko for this useful post:
  #9  
Old 28.04.2021, 11:23
Member
 
Join Date: Oct 2020
Location: Vaud
Posts: 215
Groaned at 8 Times in 7 Posts
Thanked 92 Times in 66 Posts
Gravity is considered knowledgeableGravity is considered knowledgeableGravity is considered knowledgeable
Re: Bicycle DYI adjustment, Shimano 105

I got it working, quite well!

Adjusted the height tan everything else as on this tutorial https://www.youtube.com/watch?v=42bSAnk9_zQ

^^ There's nice tip how to achieve correct tension of the cable in that video
Reply With Quote
This user would like to thank Gravity for this useful post:
  #10  
Old 28.04.2021, 11:35
Junior Member
 
Join Date: Sep 2020
Location: Vaud
Posts: 88
Groaned at 3 Times in 3 Posts
Thanked 130 Times in 50 Posts
IslanderInTheMountains has an excellent reputationIslanderInTheMountains has an excellent reputationIslanderInTheMountains has an excellent reputationIslanderInTheMountains has an excellent reputation
Re: Bicycle DYI adjustment, Shimano 105

Quote:
View Post
I got it working, quite well!

Adjusted the height tan everything else as on this tutorial https://www.youtube.com/watch?v=42bSAnk9_zQ

^^ There's nice tip how to achieve correct tension of the cable in that video
Happy days! Enjoy riding!
Reply With Quote
This user would like to thank IslanderInTheMountains for this useful post:
Reply




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Shimano Ultegra bits countrybumpkin Items for sale 13 21.07.2017 19:24
New Shimano MO-88 MBT shoes for sale Traubert Items for sale 2 07.06.2017 08:34
shimano cycling shoes CH.12.27 Sports / Fitness / Beauty / Wellness 1 04.04.2011 14:13
Shimano crankset alanbrito Sports / Fitness / Beauty / Wellness 1 05.04.2009 13:19
Shimano Tiagra vs Shimano 105 vei1977 Sports / Fitness / Beauty / Wellness 2 09.03.2009 21:25


All times are GMT +2. The time now is 01:42.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.1.0