Shimano 105 upgrade

Clash Royale CLAN TAG#URR8PPP

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I inherited an interesting Curloo Tri bike, I believe built in the late 90’s. It has a Shimano 105 group set but the cassette is only a close ratio 9 speed. Can I upgrade to a 10 or 11 speed cassette or do I need to consider a new modern group set? The chainrings are 54/39. Thx

cassette compatibility

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edited 3 hours ago

Christian Lindig

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asked 4 hours ago

Don Mann

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Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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up vote
1
down vote

favorite

I inherited an interesting Curloo Tri bike, I believe built in the late 90’s. It has a Shimano 105 group set but the cassette is only a close ratio 9 speed. Can I upgrade to a 10 or 11 speed cassette or do I need to consider a new modern group set? The chainrings are 54/39. Thx

cassette compatibility

share|improve this question

edited 3 hours ago

Christian Lindig

1,5752519

asked 4 hours ago

Don Mann

61

New contributor

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

up vote
1
down vote

favorite

up vote
1
down vote

favorite

I inherited an interesting Curloo Tri bike, I believe built in the late 90’s. It has a Shimano 105 group set but the cassette is only a close ratio 9 speed. Can I upgrade to a 10 or 11 speed cassette or do I need to consider a new modern group set? The chainrings are 54/39. Thx

cassette compatibility

share|improve this question

edited 3 hours ago

Christian Lindig

1,5752519

asked 4 hours ago

Don Mann

61

New contributor

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

I inherited an interesting Curloo Tri bike, I believe built in the late 90’s. It has a Shimano 105 group set but the cassette is only a close ratio 9 speed. Can I upgrade to a 10 or 11 speed cassette or do I need to consider a new modern group set? The chainrings are 54/39. Thx

cassette compatibility

cassette compatibility

share|improve this question

edited 3 hours ago

Christian Lindig

1,5752519

asked 4 hours ago

Don Mann

61

New contributor

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 3 hours ago

Christian Lindig

1,5752519

asked 4 hours ago

Don Mann

61

New contributor

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

share|improve this question

edited 3 hours ago

Christian Lindig

1,5752519

edited 3 hours ago

Christian Lindig

1,5752519

edited 3 hours ago

Christian Lindig

1,5752519

1,5752519

asked 4 hours ago

Don Mann

61

New contributor

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 4 hours ago

Don Mann

61

asked 4 hours ago

Don Mann

61

61

New contributor

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

New contributor

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

Don Mann is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

add a comment | 

2 Answers
2

active

oldest

votes

up vote
1
down vote

You can't just drop in a 10/11 speed cassette; 10 and 11 speed road sprockets are spaced differently than their 9 speed counterparts; a 9 speed shifter will not move the chain the right amount for use with a 10 speed cassette without additional hacks (restricting chainstops, an adapter pulley).

I'd suggest just getting a new 9 speed cassette with more favorable gear spacing. If the chainring sizes bother you, you could also put on a new crankset.

If you choose to go to 10 speed or 11 speed, you will need at a minimum a new shifter; 11 speed will need a new derailleur as well. And the shifter is probably the most expensive part to buy; buying the entire groupset might be a better deal (though questionable on value for a 20 year old bike). On top of that, 11 speed road hubs are wider than 8/9/10 speed road hubs, so you're likely going to buy another wheel if you do a 11 speed.

share|improve this answer

answered 1 hour ago

Batman

42.4k355125

add a comment | 

up vote
1
down vote

All indexing is happening in the shifters and not in the derailleur. So moving to 10 or 11 speed does not require a new derailleur. However, the pull (ratio) exercised by a 10-speed shifter is not always the same as for a 9-speed shifter. See Bicycle Rear Derailleur Compatibility for a discussion of compatibility. My takeaway is that you should be able to move to a 10-speed without updating components.

share|improve this answer

edited 1 hour ago

answered 4 hours ago

Christian Lindig

1,5752519

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Thanks Christian, good information for me to consider.
  – Don Mann
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  This answer isn't correct.
  – Batman
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  You are right - you need a shifter that now indexes for the desired new number of cogs.
  – Christian Lindig
  1 hour ago
  

  
  
  
  

add a comment | 

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

active

oldest

votes

active

oldest

votes

up vote
1
down vote

You can't just drop in a 10/11 speed cassette; 10 and 11 speed road sprockets are spaced differently than their 9 speed counterparts; a 9 speed shifter will not move the chain the right amount for use with a 10 speed cassette without additional hacks (restricting chainstops, an adapter pulley).

I'd suggest just getting a new 9 speed cassette with more favorable gear spacing. If the chainring sizes bother you, you could also put on a new crankset.

If you choose to go to 10 speed or 11 speed, you will need at a minimum a new shifter; 11 speed will need a new derailleur as well. And the shifter is probably the most expensive part to buy; buying the entire groupset might be a better deal (though questionable on value for a 20 year old bike). On top of that, 11 speed road hubs are wider than 8/9/10 speed road hubs, so you're likely going to buy another wheel if you do a 11 speed.

share|improve this answer

answered 1 hour ago

Batman

42.4k355125

add a comment | 

up vote
1
down vote

You can't just drop in a 10/11 speed cassette; 10 and 11 speed road sprockets are spaced differently than their 9 speed counterparts; a 9 speed shifter will not move the chain the right amount for use with a 10 speed cassette without additional hacks (restricting chainstops, an adapter pulley).

I'd suggest just getting a new 9 speed cassette with more favorable gear spacing. If the chainring sizes bother you, you could also put on a new crankset.

If you choose to go to 10 speed or 11 speed, you will need at a minimum a new shifter; 11 speed will need a new derailleur as well. And the shifter is probably the most expensive part to buy; buying the entire groupset might be a better deal (though questionable on value for a 20 year old bike). On top of that, 11 speed road hubs are wider than 8/9/10 speed road hubs, so you're likely going to buy another wheel if you do a 11 speed.

share|improve this answer

answered 1 hour ago

Batman

42.4k355125

add a comment | 

up vote
1
down vote

up vote
1
down vote

You can't just drop in a 10/11 speed cassette; 10 and 11 speed road sprockets are spaced differently than their 9 speed counterparts; a 9 speed shifter will not move the chain the right amount for use with a 10 speed cassette without additional hacks (restricting chainstops, an adapter pulley).

I'd suggest just getting a new 9 speed cassette with more favorable gear spacing. If the chainring sizes bother you, you could also put on a new crankset.

If you choose to go to 10 speed or 11 speed, you will need at a minimum a new shifter; 11 speed will need a new derailleur as well. And the shifter is probably the most expensive part to buy; buying the entire groupset might be a better deal (though questionable on value for a 20 year old bike). On top of that, 11 speed road hubs are wider than 8/9/10 speed road hubs, so you're likely going to buy another wheel if you do a 11 speed.

share|improve this answer

answered 1 hour ago

Batman

42.4k355125

You can't just drop in a 10/11 speed cassette; 10 and 11 speed road sprockets are spaced differently than their 9 speed counterparts; a 9 speed shifter will not move the chain the right amount for use with a 10 speed cassette without additional hacks (restricting chainstops, an adapter pulley).

I'd suggest just getting a new 9 speed cassette with more favorable gear spacing. If the chainring sizes bother you, you could also put on a new crankset.

If you choose to go to 10 speed or 11 speed, you will need at a minimum a new shifter; 11 speed will need a new derailleur as well. And the shifter is probably the most expensive part to buy; buying the entire groupset might be a better deal (though questionable on value for a 20 year old bike). On top of that, 11 speed road hubs are wider than 8/9/10 speed road hubs, so you're likely going to buy another wheel if you do a 11 speed.

share|improve this answer

answered 1 hour ago

Batman

42.4k355125

share|improve this answer

share|improve this answer

answered 1 hour ago

Batman

42.4k355125

answered 1 hour ago

Batman

42.4k355125

answered 1 hour ago

Batman

42.4k355125

42.4k355125

add a comment | 

add a comment | 

up vote
1
down vote

All indexing is happening in the shifters and not in the derailleur. So moving to 10 or 11 speed does not require a new derailleur. However, the pull (ratio) exercised by a 10-speed shifter is not always the same as for a 9-speed shifter. See Bicycle Rear Derailleur Compatibility for a discussion of compatibility. My takeaway is that you should be able to move to a 10-speed without updating components.

share|improve this answer

edited 1 hour ago

answered 4 hours ago

Christian Lindig

1,5752519

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Thanks Christian, good information for me to consider.
  – Don Mann
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  This answer isn't correct.
  – Batman
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  You are right - you need a shifter that now indexes for the desired new number of cogs.
  – Christian Lindig
  1 hour ago
  

  
  
  
  

add a comment | 

up vote
1
down vote

All indexing is happening in the shifters and not in the derailleur. So moving to 10 or 11 speed does not require a new derailleur. However, the pull (ratio) exercised by a 10-speed shifter is not always the same as for a 9-speed shifter. See Bicycle Rear Derailleur Compatibility for a discussion of compatibility. My takeaway is that you should be able to move to a 10-speed without updating components.

share|improve this answer

edited 1 hour ago

answered 4 hours ago

Christian Lindig

1,5752519

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Thanks Christian, good information for me to consider.
  – Don Mann
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  This answer isn't correct.
  – Batman
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  You are right - you need a shifter that now indexes for the desired new number of cogs.
  – Christian Lindig
  1 hour ago
  

  
  
  
  

add a comment | 

up vote
1
down vote

up vote
1
down vote

All indexing is happening in the shifters and not in the derailleur. So moving to 10 or 11 speed does not require a new derailleur. However, the pull (ratio) exercised by a 10-speed shifter is not always the same as for a 9-speed shifter. See Bicycle Rear Derailleur Compatibility for a discussion of compatibility. My takeaway is that you should be able to move to a 10-speed without updating components.

share|improve this answer

edited 1 hour ago

answered 4 hours ago

Christian Lindig

1,5752519

All indexing is happening in the shifters and not in the derailleur. So moving to 10 or 11 speed does not require a new derailleur. However, the pull (ratio) exercised by a 10-speed shifter is not always the same as for a 9-speed shifter. See Bicycle Rear Derailleur Compatibility for a discussion of compatibility. My takeaway is that you should be able to move to a 10-speed without updating components.

share|improve this answer

edited 1 hour ago

answered 4 hours ago

Christian Lindig

1,5752519

share|improve this answer

share|improve this answer

edited 1 hour ago

edited 1 hour ago

edited 1 hour ago

answered 4 hours ago

Christian Lindig

1,5752519

answered 4 hours ago

Christian Lindig

1,5752519

answered 4 hours ago

Christian Lindig

1,5752519

1,5752519

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Thanks Christian, good information for me to consider.
  – Don Mann
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  This answer isn't correct.
  – Batman
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  You are right - you need a shifter that now indexes for the desired new number of cogs.
  – Christian Lindig
  1 hour ago
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Thanks Christian, good information for me to consider.
  – Don Mann
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  This answer isn't correct.
  – Batman
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  You are right - you need a shifter that now indexes for the desired new number of cogs.
  – Christian Lindig
  1 hour ago
  

  
  
  
  

Thanks Christian, good information for me to consider.
– Don Mann
3 hours ago

Thanks Christian, good information for me to consider.
– Don Mann
3 hours ago

This answer isn't correct.
– Batman
1 hour ago

This answer isn't correct.
– Batman
1 hour ago

You are right - you need a shifter that now indexes for the desired new number of cogs.
– Christian Lindig
1 hour ago

You are right - you need a shifter that now indexes for the desired new number of cogs.
– Christian Lindig
1 hour ago

add a comment | 

Don Mann is a new contributor. Be nice, and check out our Code of Conduct.

 

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