I've brought my bike but worried about gram size

[youngoldbloke]

I've measured from centre of crank to top of seat tube and it is 53cm also popped into my LBS and he said it looks fine it wasn't that I was feeling uncomfortable i was just curious

According to the Boardman website that makes it a Medium, with a virtual seat tube of 56cm (the length it would be if it had a horizontal top tube), actual 53cm. So that sounds fine.

 

[supercooper88]

According to the Boardman website that makes it a Medium, with a virtual seat tube of 56cm (the length it would be if it had a horizontal top tube), actual 53cm. So that sounds fine.

Sorry what do you mean virtual seat tube I'm new to all this so I haven't a clue and have lots of thing to learn thanks

 

[ColinJ]

Sorry what do you mean virtual seat tube I'm new to all this so I haven't a clue and have lots of thing to learn thanks

Traditional bike frames had horizontal top tubes rather than the sloping ones on compact frames. A virtual seat tube length would be measured to where the seat post meets a virtual horizontal top tube!

 

[youngoldbloke]

Sorry what do you mean virtual seat tube I'm new to all this so I haven't a clue and have lots of thing to learn thanks

As ColinJ says^.
If you look at the 'geometry' diagram on the website the dotted line shows the 'virtual top tube', (but doesn't give a measurement for the actual (sloping) top tube). On the other hand it gives the actual seat tube measurement (53cm - which is what you measured), and it also gives a measurement for a 'conventional' seat tube - 56cm - this is what I call the 'virtual' seat tube - the measurement to the point where the dotted line would meet the seat tube if it was extended upwards. It would be really helpful if there was a universal convention regarding the way frames were measured and described. At the moment it can be really difficult to compare different makes with each other.

 

[supercooper88]

So as was said going by this http://www.boardmanbikes.com/cx/cx_team.html the size is correct ..

 

[youngoldbloke]

So as was said going by this http://www.boardmanbikes.com/cx/cx_team.html the size is correct ..

Looks like it - would appear you have a MEDIUM frame according to their website

 

[MrGrumpy]

I purchased my new boardman cx on Friday and I went for a 53 frame and I am 5ft10" and was advised to go for this frame is this correct any input would be appreciated thanks

If it feels comfortable it matters not a jot. Besides small adjustments could be made to ensure a better fit. If the reach is fine and saddle height leaves enough room them nowt to worry about.