Tales from today's commute....

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BSRU

A Human Being
Location
Swindon
What are the crank lengths?
The CX is 170 and my other two are 172.5.
 

GrasB

Veteran
Location
Nr Cambridge
The CX is 170 and my other two are 172.5.
That's the wrong way round. Usually it's the other direction.
Possibilities are you've got the saddle set in an effectively different position on the CX than the other bikes (because the cranks are shorter the bottom of the stroke is 2.5mm higher than before if the fit is the same to the BB centre). Also the extra force you need to turn the cranks is making you down gear earlier.
 

BSRU

A Human Being
Location
Swindon
That's the wrong way round. Usually it's the other direction.
Possibilities are you've got the saddle set in an effectively different position on the CX than the other bikes (because the cranks are shorter the bottom of the stroke is 2.5mm higher than before if the fit is the same to the BB centre). Also the extra force you need to turn the cranks is making you down gear earlier.
I thought the same bigger lever means less effort and vice versa.
There is a little more seat post showing and the saddle is not quite as far forward, all three of my main commuting bikes have the same saddle. The CX bike seems to have more "aggressive" geometry as it has the shortest wheel base of all three, all are 56cm frames.
 

GrasB

Veteran
Location
Nr Cambridge
I thought the same bigger lever means less effort and vice versa.
I meant gear up not gear down.

There is a little more seat post showing and the saddle is not quite as far forward, all three of my main commuting bikes have the same saddle.
Neither of which give any indication to the relative fits of the bike. The saddle position should be taken from the bottom of the pedal stroke to the sit point of the saddle. The bar position is then referenced from the sit point of the saddle & the bottom point of the pedal stroke. The order IS important. Note that the effective angle of the seat post isn't important only it's length. From that you then get your hand contact points. If you want a more up-right position, you adjust the seat back & correct the seat post length before moving the bars into the correct place.

The CX bike seems to have more "aggressive" geometry as it has the shortest wheel base of all three, all are 56cm frames.
Angles & wheel base mean things, the frame size '56cm' means jack.
 

Frood42

I know where my towel is
:wahhey: My bike and brakes are now fixed and I am back commuting into work (I'm no mechanic so it had to wait to go into a bike shop at the weekend).

I have missed the bike, and despite the slight drizzle and headwind, oh, and the idiot driver not looking and cutting me up as they turned into a bus lane, I had a really nice commute this morning.

Now for the ride home :hyper:
 
Well a lovely day for cycling, head wind coming home was tough and consistent, like a 15 mile ride up hill. My regulars I see coming the other way were loving it !

It is definitely time for shorts, fingerless gloves and short sleeve jersey
 

AndyRM

XOXO
Location
North Shields
Nice ride home, but just before Wallsend High Street saw a BMW nearly pull out in front of a chap on a MTB. She sort of poked out and I thought she'd seen the guy but she just kept coming! Seemed alright when I asked him on the way past, would have been nasty if he didn't have his wits about him.
 

PJ79LIZARD

Über Member
Location
WEST MIDLANDS
A geezer tonight on MTb at a post box, saw me coming down the road, then like summat possessed flung his backpack on, jumped on his bike and jumped off the kerb to get in front of me before I passed him. My problem with this was he was travelling at what I can only describe as a slow pace and then became an obstacle. What was the point and what was it supposed to prove, apart from you being a nob!
 

ianrauk

Tattooed Beat Messiah
Location
Rides Ti2
Really nice ride home tonight. Very little wind. Traffic and other cyclists behaved. The lights were green and I walked through the door just as it started raining.
 

apb

Veteran
Got soaked on the way home. Gave a guy wave who also found himself in the same predicament. Atleast it wasn't cold.
 
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