BikeDynamics - Bike Sizing

Bike Sizing
There are a number of options available to ensure that you purchase a correctly sized bicycle. If you are of normal proportions, flexibility and within the central half of the adult height range i.e. 5'6 to 6'2 then you should be safe to use the manufacturers recommendations or the numerous guides and tables available on the web. It is when your physicality starts to vary beyond the accepted norms that we need to take more care.

See BikeSize.Info for suggested sizes and geometries for 'normal' people and what can go wrong. Unusual proportions and flexibility are the usual culprits, but manufacturer's component choices and bizarre frame size classifications do not help.

Bike Sizing Options

The available Bike Sizing options are as follows.
  1. Telephone Consultation   £20
  2. Existing Bike Template  £45
  3. Bike Sizing Jig   £59
  4. Fit to Size   £110

 

1)Telephone Consulation  £20
1/2 hour telephone conversation on your type of cycling, existing aches and pains, size, shape and flexibility, current bike size, aspirations etc. As a minimum, the outcome would be a recommendation for a suitable bike size and a range for stack, reach and effective top tube length. Ideally, we would be able to recommend which of a preferred manufacturer's product fitted you best, with suggestions for stem length, spacer stack height and crank lengths. The call could also possibly be made via Skype or using IPad Facetime.

2) Existing Bike Template  £45

Geometry Overlay

Image Overlay.

If perfectly comfortable on your existing bike, but looking to upgrade the frame. We could take a side profile image of your bike and use Dartfish technology to overlay the geometry of any preferred alternatives. Taking the crank centre, saddle and hoods / grips as target reference points. The stem height and length and seat-post set back could be established to perfectly reproduce the same position. The picture left shows the predicted head tube position and saddle height range of a 54cm Trek Madone relative to the exisiting Principia.

3) Bike Sizing Jig  £59

Bike Sizing Jig

Bike Sizing Jig.

BikeDynamics has a fully adjustable jig, that can quickly reproduce the geometries of any published frame data. Combined with your own shape, proportions and flexibility, we can ascertain the optimum size from a manufacturers range, or establish the necessary dimensions to give to a custom frame builder.


Bike Sizing Jig Bike Sizing Jig Bike Sizing Jig

4) Fit to Size  £110

Fit to Size

Fit to Size

Your current bike may be comfortable enough, but you have nagging doubts that it may be the wrong size and you are not getting the most out of it. Alternatively it maybe the right size, just badly fitted.
The Fit to Size option provides a flexible means to explore both these eventualities. If the frame size is ok, the session will turn into a Dynamic Fit, altering the bike to improve your comfort, power and efficiency. If it can never be made to work properly, the session will turn into a sizing exercise, using both the bike and jig to find a more appropriate size and position.

 

All fittings are subject to our Terms and Conditions.

 

Page Last Updated : 20th February 2012 All Rights Reserved. BikeDynamics - Bike Fitting Specialists