Truer calibration?
10-06-2009, 04:40 PM
#1
Truer calibration?
When my hudy truer was new I could set it at 60, and then 0 and almost always get a 60ish mm tire. I've since cut hundreds of sets and started doing 18th and 8th scale tires and now it seems to be pretty far off. I've tried reseating the screw that holds the square piece to the bit but I always end up with the same setting.
Does anybody know how to recalibrate it properly?
Does anybody know how to recalibrate it properly?
10-06-2009, 06:32 PM
#2
Loosen the two screws to the right of the dashes and slide the block forward or backwards to adjust the cutting depth then tighten.
10-06-2009, 08:34 PM
#3
I tried that a few times, I must have been doing it wrong though. I tried to set the dial at 0, and then get a 60mm cut by measuring from 62, 61.5 and so on and it didn't seem to ever cut 60.0 at 0, the dial had to be at -0.5 and 58's had to be -1.0 or something similar to that. maybe just the wear in the bit?
10-06-2009, 10:31 PM
#4
I tried that a few times, I must have been doing it wrong though. I tried to set the dial at 0, and then get a 60mm cut by measuring from 62, 61.5 and so on and it didn't seem to ever cut 60.0 at 0, the dial had to be at -0.5 and 58's had to be -1.0 or something similar to that. maybe just the wear in the bit?
example
so you set the truer to 60mm make a cut and it measures 60.4mm so you need to loosen the wheel and reset it to to indicate 0.4. After this setting is correct, then spin the wheel to 0.0, and now loosen the 2 screws 'to the right' and reset so the dashes line up with 60.0mm
now you should be good.
forgot to mention the screw is a single thread lead screw. so this setting should be repeatable. if you lost calibration it must be either because the cutter bit was bumped/moved(or wore down) or the grub screw holding the wheel got loose. either way it is a simple fix.
10-07-2009, 05:58 AM
#5
first you need to relocate the wheel. it has a grub screw that you can loosen. you need set the wheel to coincide with the measurement on a tire after a test cut. afterwards the dashes can be set to match.
example
so you set the truer to 60mm make a cut and it measures 60.4mm so you need to loosen the wheel and reset it to to indicate 0.4. After this setting is correct, then spin the wheel to 0.0, and now loosen the 2 screws 'to the right' and reset so the dashes line up with 60.0mm
now you should be good.
forgot to mention the screw is a single thread lead screw. so this setting should be repeatable. if you lost calibration it must be either because the cutter bit was bumped/moved(or wore down) or the grub screw holding the wheel got loose. either way it is a simple fix.
example
so you set the truer to 60mm make a cut and it measures 60.4mm so you need to loosen the wheel and reset it to to indicate 0.4. After this setting is correct, then spin the wheel to 0.0, and now loosen the 2 screws 'to the right' and reset so the dashes line up with 60.0mm
now you should be good.
forgot to mention the screw is a single thread lead screw. so this setting should be repeatable. if you lost calibration it must be either because the cutter bit was bumped/moved(or wore down) or the grub screw holding the wheel got loose. either way it is a simple fix.
10-07-2009, 06:55 AM
#6
i know what you mean, when something just works well, one tends to ignore the how and why.
10-07-2009, 08:27 PM
#7
Tech Regular
Try to check the two round metal rod inside the slider. If the screw is loose it may makes the slider to move around. That is what happen to mine and I tighten the screws and everything works fine now. 
10-07-2009, 08:39 PM
#8
you know we are old school when the truer gets loose from too many sets of tires.
10-13-2009, 06:48 PM
#10
Sort of, 60mm is always 60mm. but if I do a full turn which would be 58mm I end up with 58.5, so I have to do 2.5 on the dial to get 2mm on the tire. it is consistent but I remember this truer being perfect when I first got it. Perhaps time is wearing on it.
I would hate to see how far off my first 8th scale tire will be, I am just going to have to start 2mm big and measure every tire I cut.. I used to remember cutting by the dial tire after tire 60 and 58 or 58 and 56 and they would be within .1 or so
I would hate to see how far off my first 8th scale tire will be, I am just going to have to start 2mm big and measure every tire I cut.. I used to remember cutting by the dial tire after tire 60 and 58 or 58 and 56 and they would be within .1 or so
10-13-2009, 07:26 PM
#11
Brian,
Check to see if you are cutting with a camber angle. I found that if I have the camber cut set to 1 degree then the cut using the graduated dial is not accurate, but it is fairly accurate when the camber cut knob is set to 0 degree cut.
You can adjust the camber cut by turning the small knob located below the graduated dial.
Eduardo
Check to see if you are cutting with a camber angle. I found that if I have the camber cut set to 1 degree then the cut using the graduated dial is not accurate, but it is fairly accurate when the camber cut knob is set to 0 degree cut.
You can adjust the camber cut by turning the small knob located below the graduated dial.
Eduardo
10-13-2009, 07:52 PM
#12
Brian,
Check to see if you are cutting with a camber angle. I found that if I have the camber cut set to 1 degree then the cut using the graduated dial is not accurate, but it is fairly accurate when the camber cut knob is set to 0 degree cut.
You can adjust the camber cut by turning the small knob located below the graduated dial.
Eduardo
Check to see if you are cutting with a camber angle. I found that if I have the camber cut set to 1 degree then the cut using the graduated dial is not accurate, but it is fairly accurate when the camber cut knob is set to 0 degree cut.
You can adjust the camber cut by turning the small knob located below the graduated dial.
Eduardo
Can the slides cause this? I was looking at replacement parts and you can find most of the truer assembly besides the base in pieces.
10-14-2009, 04:35 AM
#13
Brian,
One more thing to check. There should be no backslash in the graduated dial. You can check for backslash by pulling and pushing the dial, if there is movement that could cause faulty cut/readings. To take out the backslash lose the grub screw on the dial and push it all the way in, then tigthen the grub screw and check the backslash again. There should be no play at all.
Eduardo
One more thing to check. There should be no backslash in the graduated dial. You can check for backslash by pulling and pushing the dial, if there is movement that could cause faulty cut/readings. To take out the backslash lose the grub screw on the dial and push it all the way in, then tigthen the grub screw and check the backslash again. There should be no play at all.
Eduardo
08-19-2014, 10:48 PM
#15
A softer tire will expand more during rotation. If you calibrate the truer to one shore it will be off to another shore.