chain alignment

[twisty]

using a 1 inch cube magnets and a cheap laser level with a magnetic base i found that what i thought was perfect alignment was in fact about 5mm out.

for a total cost of about £15 i've now got a perfect reference as the adjuster bolts are now marked to a point which i know is perfect.

the projected line does not have to be against the chain , better to have it an inch or so out as it makes for a more accurate measurement using a ruler.

The 1inch cube magnets fit neatly on the rear sprocket, attach the laser line level , use a tape measure and read off the distance to the chain plate at a point near the sprocket and one further forward, adjust and job done.
Mark the adjuster bolts as reference point.

magnets


laser level


i'll post up some pictures later of the actual set up in use

[vtxbrit]

look forward to seeing your pictures twisty.....................who says we need a £500 lazer setup

[twisty]

rear sprocket


with two square 1inch magnets attached, note the 1inch magnet is an exact fit in the sprocket recess groove and the top magnet can be rotated. These magnets are extremely powerful so be careful with fingers and don't put on top of rear seat as the ecu is underneath.


with magnets and skil laser attached, the laser just rotates by turning the magnet or the laser
look closely and the laser beam can be seen


reading laser against tape measure near sprocket, my wheel was loose which is why the readings are a mile off
distance from the chain is unimportant as long as when measured against the chain plates from two separate points the reading is the same distance.


and again reading laser at footpeg


i found it better to put a metal plate on the laser bottom then the magnets on top


laser line can be seen on the floor in picture below


i used a skil laser , but a cheap laser would do
AMENDED
THE SKIL LASER ADJUSTMENT SCREWS ARE ACTUALLY JUST CLAMPING SCREWS FOR THE CASING SO PROBABLY ANY CHEAP LASER WILL DO , EASY TO ADJUST LEVEL WITH A PACKING OF PAPER ETC.



the most important thing to do is to calibrate the laser by putting it on a straight edge such as a spirit level or a piece of glass and measure against a tape measure at two points approx 24 inches apart and adjust laser level by , for instance using slips of paper as packers between the magnet and the laser, to obtain a duplicate measurement reading.

If you do not calibrate the laser using slips of paper etc 1mm out can become as much as 6mm over a metre.
It's simple to do , although time consuming. A glass table is perfect or a spirit level.
for some reason the pictures are being cropped on the right hand side
the skil level i used is available on ebay for about £14
http://cgi.ebay.co.uk/SKIL-MULTI-FUNCTI ... ols_Levels

but a cheaper one is available for less and will probably do just as good a job. I fit doesn't have a magnetic base then just superglue a metal plate to the laser base so that it sticks to the magnet. Just make sure the glue is not thick . Magnets about £10 for two, i checked them with a vernier gauge and they were pretty accurate for being dimensionally square.
http://cgi.ebay.co.uk/2-CUBE-MAGNET-1-x ... rdStuff_RL

the chain adjusting lasers available on the web are more expensive and i don't think they would work on the corsaro due to the groove on the sprocket and the holding bolts interfering with the magnetic mounting.

or just use your eyes and the adjuster bolt markings :roll
:

If you take a reading from a tape measure near the footpeg and lets say you've got 70mm from the laser line to the chain plate.
if the laser was not reading right and was out by 3mm then the correct alignment for the chain would read on the tape measure as 67mm.This would save fannying about with calibrating any laser which was not properly set up.

you only need to do this once as then you have a reference to work from using the normal adjusters