53/39 from 50/34. Will it make a noticeable difference?

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Bluedoggy
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53/39 from 50/34. Will it make a noticeable difference?

Postby Bluedoggy » Sun Dec 09, 2012 22:29 pm

A very kind friend of mine has given me 53/39 chain set. Will it make it harder for me on the hills? Or is there not much in it? Is it better? I live in the Bath area so lots of undulating hills etc. Also will I need a new bottom bracket? I have a standard chain set on my Wilier Izoard.
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Raffles
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Raffles » Sun Dec 09, 2012 22:37 pm

I went from 53/39 to 50/34 because hills were killing me. I use 12-25 10 speed at the rear and wouldnt contemplate a return to 53/39, id leave the standard double to the racing guys.
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Neale1978
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Neale1978 » Sun Dec 09, 2012 22:46 pm

Its bigger gearing sure but you should still be able to get up any hills with it. You just may shift between the front rings a little more

I have the opposite issue where iam after 53-39 and stuck with compact for now. I never use the inner front ring so would benefit switching

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Bluedoggy
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Bluedoggy » Sun Dec 09, 2012 23:01 pm

In retrospect the only reason I want to swap is because it has a pro carbon cranks. I could simply swap the cranks and leave the original FSA rings I suppose come to think of it?
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Neale1978
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Neale1978 » Sun Dec 09, 2012 23:03 pm

If they fit go for it yeah

TakeTurns
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby TakeTurns » Sun Dec 09, 2012 23:07 pm

It'll make you stronger, lets put it that way. :)

My first chainset was a 53/39 with 12-25 cassette. Any hill above 10% gradient would hurt. Now however, I can climb anything, combined with a 12-27.

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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby southdownswolf » Sun Dec 09, 2012 23:10 pm

If it fits without needing a new BB or chain, give it a go. Might be useful for a TT in future?
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Strith » Sun Dec 09, 2012 23:14 pm

Bluedoggy wrote:In retrospect the only reason I want to swap is because it has a pro carbon cranks. I could simply swap the cranks and leave the original FSA rings I suppose come to think of it?


They will almost certainly have different bcd's on each crankset. Check that.

53/39 is all I need in the uk, but it depends on you and where you ride.

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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Bluedoggy » Sun Dec 09, 2012 23:18 pm

Strith wrote:
Bluedoggy wrote:In retrospect the only reason I want to swap is because it has a pro carbon cranks. I could simply swap the cranks and leave the original FSA rings I suppose come to think of it?


They will almost certainly have different bcd's on each crankset. Check that.

53/39 is all I need in the uk, but it depends on you and where you ride.

What's a 'bcd'?
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby DesWeller » Sun Dec 09, 2012 23:48 pm

Bluedoggy wrote:
Strith wrote:
Bluedoggy wrote:In retrospect the only reason I want to swap is because it has a pro carbon cranks. I could simply swap the cranks and leave the original FSA rings I suppose come to think of it?


They will almost certainly have different bcd's on each crankset. Check that.

53/39 is all I need in the uk, but it depends on you and where you ride.

What's a 'bcd'?


Bolt circle diameter (also sometimes called PCD for pitch circle diameter) .

If you drew a circle through all the screws holding the chainrings on, the BCD would be the diameter of that circle.

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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Bluedoggy » Mon Dec 10, 2012 00:10 am

DesWeller wrote:
Bluedoggy wrote:
Strith wrote:
Bluedoggy wrote:In retrospect the only reason I want to swap is because it has a pro carbon cranks. I could simply swap the cranks and leave the original FSA rings I suppose come to think of it?


They will almost certainly have different bcd's on each crankset. Check that.

53/39 is all I need in the uk, but it depends on you and where you ride.

What's a 'bcd'?


Bolt circle diameter (also sometimes called PCD for pitch circle diameter) .

If you drew a circle through all the screws holding the chainrings on, the BCD would be the diameter of that circle.


Got it:)
They are different. 130 on my existing bike. 110 on the new chainset:(

What about changing the rear cassette instead? I just don't want to struggle with hills. Would this help? I'm not unfit. I ride 30 miles four to five days a week. I climb one short steep hill each time 7% I think?
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Hoopdriver » Mon Dec 10, 2012 01:27 am

Bluedoggy wrote:
DesWeller wrote:
Bluedoggy wrote:
Strith wrote:
Bluedoggy wrote:In retrospect the only reason I want to swap is because it has a pro carbon cranks. I could simply swap the cranks and leave the original FSA rings I suppose come to think of it?


They will almost certainly have different bcd's on each crankset. Check that.

53/39 is all I need in the uk, but it depends on you and where you ride.

What's a 'bcd'?


Bolt circle diameter (also sometimes called PCD for pitch circle diameter) .

If you drew a circle through all the screws holding the chainrings on, the BCD would be the diameter of that circle.


Got it:)
They are different. 130 on my existing bike. 110 on the new chainset:(

What about changing the rear cassette instead? I just don't want to struggle with hills. Would this help? I'm not unfit. I ride 30 miles four to five days a week. I climb one short steep hill each time 7% I think?

Changing the rear cassette might be a very good idea. I honestly cannot see the point of 53x39 for the vast, vast majority of cyclists, myself included. It's just an ego, macho thing. You are most unlikely to be spinning out in 50x11 and if you are outpacing such a gear chances are you are already in the pro ranks.

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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby bernithebiker » Mon Dec 10, 2012 08:16 am

TakeTurns wrote:It'll make you stronger, lets put it that way. :)

My first chainset was a 53/39 with 12-25 cassette. Any hill above 10% gradient would hurt. Now however, I can climb anything, combined with a 12-27.


Me too. I could climb anything with my 53/39, 12-27.

But I can climb a damn sight quicker now with my 50/34, 11-23.

Why? Lower gear, higher cadence (=more power), tighter gear spread.

If riding long days (150km+) in the Alps, I'll use an 11-28 to keep the cadence up on the steepest (8%+) climbs.
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby JSCL » Mon Dec 10, 2012 09:52 am

I find myself eating the hills with 53/39 and 11/25 much better than I was on compact gearing. Absolutely loving it since I upgraded. If you can maintain the cadence on the higher gearing that you'd be used to on the compact (which is what I aim for when climbing), it's a harder workout, but boy you can see the results on your route times.
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby CptKernow » Mon Dec 10, 2012 10:02 am

I got back into cycling last year with a 34/50 and a 12/25 on the back. Didn't like it that much from the start - difference between big and small rings felt too big. I eventually but a 36T inner ring on which I got on with better.
I'm now riding a winter bike with a 39/53 and 12/26 and am loving it. Where I live is pretty hilly (Cornwall) but I'm quite light <70kg, so that might be something to factor in.

What I did before switching was try avoiding the lowest 2 gears just to see if I could handle the steepest hills around.

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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby drlodge » Mon Dec 10, 2012 10:52 am

Love my 34/50 and 13-28/12-27 combinations (prevously had 42-52 chainset). I need the lowest gear on the steepest hills, chaning to a 39/53 would mean I'd struggle. I don't find the big gap of the 34-50 a big issue, but does mean changing chainrings quite often though. I just get used to it.
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Bluedoggy » Mon Dec 10, 2012 10:57 am

So what rear cassette ratio would someone recommend to help with the hills? My current is 12/25.
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby amaferanga » Mon Dec 10, 2012 11:01 am

A 36 or 37 inner ring is better IME. That means you don't have to shift up at least 2 cogs at the back when you move to the big ring and for me with a 34/50 I found that the gear I wanted was too often right in the middle between being on the big and small ring - in other words I'd have a crossing chain too often. I don't get this with a 39/53 or a 37/52, but it was always a problem with a 34/50. Of course that could just be down to the speed I ride at, the terrain and my preferred cadence, but I've heard others say the same thing.
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby amaferanga » Mon Dec 10, 2012 11:03 am

Bluedoggy wrote:So what rear cassette ratio would someone recommend to help with the hills? My current is 12/25.


Try a 12-27 when that one wears out. Any bigger range and the jump between some gears might become an issue and most road rear mechs are only rated up to a 27 or 28 sprocket anyway.
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Re: 53/39 from 50/34. Will it make a noticeable difference?

Postby Bluedoggy » Mon Dec 10, 2012 11:19 am

amaferanga wrote:
Bluedoggy wrote:So what rear cassette ratio would someone recommend to help with the hills? My current is 12/25.


Try a 12-27 when that one wears out. Any bigger range and the jump between some gears might become an issue and most road rear mechs are only rated up to a 27 or 28 sprocket anyway.


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