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Ender
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I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere.

This is a 27.5" Merida Big Nine 100 XC MTB. Its chainset has been replaced with a Shimano FC-MT101 by its previous owner. Original chainset is SR Suntour XCM 40-30-22 CG (BSA) according to 99spokes.com. Bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm. I suspect that's why I can't shift from smallest chain ring to the middle without tightening the shifting cable too much via the adjuster barrel on the shifter.

enter image description here

After I got the advise from @Nathan Knutson to find the chain line of the bike I measured it as 57-58mm. enter image description here

However the front derailleur's chain line compatibility is 50mm. So the answer is they are incompatible I guess.

I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere.

This is a 27.5" Merida Big Nine 100 XC MTB. Its chainset has been replaced with a Shimano FC-MT101 by its previous owner. Original chainset is SR Suntour XCM 40-30-22 CG (BSA) according to 99spokes.com. Bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm. I suspect that's why I can't shift from smallest chain ring to the middle without tightening the shifting cable too much via the adjuster barrel on the shifter.

enter image description here

I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere.

This is a 27.5" Merida Big Nine 100 XC MTB. Its chainset has been replaced with a Shimano FC-MT101 by its previous owner. Original chainset is SR Suntour XCM 40-30-22 CG (BSA) according to 99spokes.com. Bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm. I suspect that's why I can't shift from smallest chain ring to the middle without tightening the shifting cable too much via the adjuster barrel on the shifter.

enter image description here

After I got the advise from @Nathan Knutson to find the chain line of the bike I measured it as 57-58mm. enter image description here

However the front derailleur's chain line compatibility is 50mm. So the answer is they are incompatible I guess.

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Ender
Ender
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Space between chainring Frame and framebottom bracket compatibility

I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere. 

This is a 27.5" Merida Big Nine 100 XC MTB frame. Its chainset has been replaced with a square type bottom bracketShimano FC-MT101 by its previous owner. My bike's bottomOriginal chainset is SR Suntour XCM 40-30-22 CG (BSA) according to 99spokes.com. Bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm. I suspect that's why I can't shift from smallest chain ring to the middle without tightening the shifting cable too much via the adjuster barrel on the shifter.

enter image description here

Space between chainring and frame

I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere. This is a 27.5" XC MTB frame with a square type bottom bracket. My bike's bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm.

enter image description here

Frame and bottom bracket compatibility

I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere. 

This is a 27.5" Merida Big Nine 100 XC MTB. Its chainset has been replaced with a Shimano FC-MT101 by its previous owner. Original chainset is SR Suntour XCM 40-30-22 CG (BSA) according to 99spokes.com. Bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm. I suspect that's why I can't shift from smallest chain ring to the middle without tightening the shifting cable too much via the adjuster barrel on the shifter.

enter image description here

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Ender
Ender
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I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere. This is a 27.5" XC MTB frame with a square type bottom bracket. My bike's bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm.

enter image description here

I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere. This is a 27.5" XC MTB frame with a square type bottom bracket. Do you think the space between the frame and chainring is too wide? It's about 1 cm.

enter image description here

I have problems with adjusting front shifting on my MTB so I suspect something is wrong elsewhere. This is a 27.5" XC MTB frame with a square type bottom bracket. My bike's bottom bracket shell is 72mm wide but I don't know the model of the bottom bracket so I don't know its width.

Do you think the space between the frame and chainring is too wide? It's about 1 cm.

enter image description here

Source Link
Ender
Ender
  • 2.2k
  • 11
  • 32