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Posted

thats a 12 - 25, learn to count.

 

Or remember to stop when you get to the start again.

 

 

no need to be mean !

 

its more a case of dont count after a G&T (more like stop at the correct marker).

 

Your assumption is correct it is a 25.

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Posted

Dude, your big chain ring on the front is a 53.... right?

 

You say your big"cog" at the back is a 50...right?

 

Now look closely at both, do they look almost the same size as each other?

 

50 tooth cassette....Pfffft...

 

that thought did occur to me as I was ready Jaco's post. It was then I realised maths was never a good point. Kinda like english.

 

So now we I have discovered the truth about my bike, will a longer crank arm make any difference ?

Posted

no need to be mean !

 

its more a case of dont count after a G&T (more like stop at the correct marker).

 

Your assumption is correct it is a 25.

 

Haha, I dont what to know why you have a G&T in at this time of day!!! :thumbup:

Posted

that thought did occur to me as I was ready Jaco's post. It was then I realised maths was never a good point. Kinda like english.

 

So now we I have discovered the truth about my bike, will a longer crank arm make any difference ?

 

Yes

Posted

that thought did occur to me as I was ready Jaco's post. It was then I realised maths

 

So now we I have discovered the truth about my bike, will a longer crank arm make any difference ?

 

 

Yes your pedal will be closer to the ground at 6 o clock and closer to your thigh at 12 o clock

Posted

So now we I have discovered the truth about my bike, will a longer crank arm make any difference ?

 

It might, it might not.

 

The first time I swapped between 170 and 172.5 I felt a big difference. These days every second day is on a different crank arm length, and I don't feel it anymore. I'd probably feel 160 to 180, though. What size is the MTB crankarm?

 

It might also be pedal/cleat position if you use different shoes on the two bikes.

Posted

Yes your pedal will be closer to the ground at 6 o clock and closer to your thigh at 12 o clock

 

And further away from your back wheel at 3 o'clock :whistling:

Posted

It might, it might not.

 

The first time I swapped between 170 and 172.5 I felt a big difference. These days every second day is on a different crank arm length, and I don't feel it anymore. I'd probably feel 160 to 180, though. What size is the MTB crankarm?

 

It might also be pedal/cleat position if you use different shoes on the two bikes.

 

dude, no offense, but I can hardly count teeth, now you asking me to use a tape measure with like mm's and cm's ?

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