how do you check your steering dead angle with only a bare frame

[jimg1au]

hi
after much dissucion i have come to the conclusion that my flact track frame is a redline or a copy of a redline.now redline made 2 types of frame mx and flattrack
mx frame has 29 deg steering angle
flattrack frame has 26 deg
i would like to know how you tell the difference
thanks
jim

[vandy010]

for the sake of accuracy Jim,
i'd be wanting to be a little patient and do a mock up with suspension/wheels etc as this'll give the true reading of steering angle.
patience grasshopper

[jimg1au]

thats what i thought.
firkos mate yamamaico might be able to help as he changed the head angle on his it/yz dirttracker
jim

[mick25]

I have done two steering head changes 30 deg to 27 on a couple of bikes for better cornering speed.
This is the way i worked it out ,on my own throughts may be theres a better way..
To check your frame angle
I just get the bike complete wheels forks shocks and level it out on the ground useing a long straight edge and sprit level
Then i get a builders sliding bevel and put it agaist the forks you will have to put a sprit level on top of the bevel and level the bevel,
this will give you your deg angle........ then drop the bevel in a builders drop  saw and rotate the blade to suit the bevel angle, the saw has degs numbers on it, 
this will give you a deg angle within two degs on my sums,to your frame.
Im in the building trade so may sound funny to some but worked for me..................................

[David Lahey]

Thats a good technique if you:
Have triple clamps with no angular offset to the steering head or
Want to change the steering angle by X degrees

[PEZBerq]

Surely you can measure the steering head direct also - instead of on the forks  May need a short spacer with parallel sides to get away from the obstruction of triple clamps,welds, bearing housings etc when measuring using a builders sliding bevel and spirit level. Probably a 2 or 3 person job .