Getting bikes to fit you! - by Allan Robinson

 

Looking round at club members we come in all shapes and sizes, yet bikes are

one size fits all, with no stretchy bits to expand or contract to fit our

various contours.

 

Getting a bike to feel comfortable is important because it will make you

feel better but helps improve your control and those of you who race will go

faster for longer.

 

Taking a bit of time to set up your bike will make a difference and does not

have to cost a fortune as something as simple as bar rotation and lever

position can have positive results. Here is a quick summary of what this

means.

 

 

Handlebars

 

Perhaps the most changed item on many dirt bikes, mainly because machines

used to come with low quality steel bars but now that no longer is the case

for most of the major manufactures. However the shape of the bar may not be

ideal but before buying something else try adjusting what you have.

 

Millimetres in any direction can change the feeling and handling of a bike.

I used to have a specific bend of Renthal bars that I used on several bikes.

Most manufacturers have specific bends and heights and some people prefer a

more swept back bar and others a more straight style.

 

Enduro riders who ride in tight woodland conditions sometimes cut bars down

in width to 27 or 28 inches but check mounting of all hardware first as the

bends can sometime interfere if you have handguards, GPS etc but also where

you position tie-downs. Narrow bars can make the bike more nervous but also

more agile for negotiating trees.

 

The more a handle bar is rolled forward the better it will feel in turns but

it may also feel nervous. The more rolled back the opposite applies i.e.

more stable but slower turning.

 

There is no right position as it's an individual thing but start by aligning

the "riser" section of the handlebar to be parallel with the fork leg when

viewed from the side and adjust to taste.


 

Levers

 

If you race and spend time standing you may choose to rotate levers further

down than normal. Couple of key tips 1) make sure the end of the lever is

inside the end of the handle bars 2) never tighten the clamps hard they

should be tight enough to hold position but loose enough to be moved by

hand. Both of these tips will help save your levers in the event of the bike

falling over.

 

Lever length affects the clutch pull so check if there are longer options if

it's heavy or look at some of the quality bearing types such as those

offered by Enduro Enginerering. I also found some levers can be a little

"square" which on a long ride can cause soreness.

 

 

Grips

 

Many factors such as diameter, compound, pattern or and of course colour

need to be considered. The most common design is the half waffle soft

compound grip - smooth in the palm but grips where your fingers connect. If

you suffer arm pump try a larger outside diameter design. People with big

hands can suffer with small diameter grips.

 

 

Seats & Covers

 

KTM's are legendary for having hard seats and sometimes changing the seat

foam and cover can help. This approach is often a simple step for those who

may be short or long in the leg. If you change you seat height this may

effect your position on the bike so some time twiddling the suspension

clickers may be required.

 

Gripper covers may seem like a good idea in the mud and motocross riders use

them but they can cause "monkey butt" in long races or trail rides so best

avoided if long distance is the order of the day.

 

 

Adjustable bar clamps

 

Some bikes now come with offset set clamps with forward and rear positions

for the mounting on the bar can be fine tuned. If not after market clamps

can not only move the bar position but raise it also.

 

 

 

New KTMs can feel front wheel heavy if set in the most forward position so

moving them back and reversing can make the ride seem more neutral. The rear

position is also favoured for rough or sandy conditions when you want to put

your weight to the rear of the bike.

 

Some clamps have rubber inserts to reduce the vibration effect. The clamps

position changes the way the weight is applied to the forks so it changes

the way the bike feels. Forward may make the fork seem softer. Again

motocross and Enduro / trail set up are often the opposite so be aware of

following Stephen Everts tips unless you nail the whoops at Hawkstone Park

on a 450.

 

 

Footpegs

 

In the past welding extensions on narrow pegs and sharpening then up was

about as advanced as it got. The wider pegs are now common place but "Pivot

Pegs" seem to get good reviews allowing more contact with the bike during

braking and gear changes