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Maslow triangulation linkage kit


#1

This is a companion discussion topic for the original entry at http://maslowcommunitygarden.org/Maslow-triangulation-linkage-kit.html

#2

Please quantify “Improved accuracy” and show images of a cut with and without the improvement.


#3

“that enables triangular kinematics” is before, so I assume that ‘improved accuracy’ means compared to the quadrilateral with the original brackets.
A comparison between the 3 triangular kits (thisone, the ring and the top-mount) was not done yet to my knowledge.


#4

@Gero is correct. Improved accuracy compared to the quadrilateral kinematics using the original brackets to mount the chains to the sled.

There has been a comparison between the 45˚ kit and the top mount. MeticulousMaynard did an excellent job documenting his comparison. You can read it here: Triangular Linkage Evaluation Criteria and Measurements

Spoiler: “So my conclusions on the comparison between systems is that I think the 45 degree is a better system all around.”

Since then I think there have been some improvements made to the top mount design but I don’t think anyone has tested them again since then.

There have not been any head-to-head test with the linkage and the ring that I know of, however, several people who have had both the 45˚ linkage and the ring have said that they prefer the linkage because they tend to get wavy horizontal lines with the ring. Without testing, I believe this is due to “jittering” rollers, which is explained in this post: Throwing my hat in the sled modification ring


#5

@Gero is correct. Improved accuracy compared to the quadrilateral kinematics using the original brackets to mount the chains to the sled.

This isn’t a small amount of accuracy, this is a change from being off by inches
to being off by 1/8 or less.

There has been a comparison between the 45˚ kit and the top mount.
MeticulousMaynard did an excellent job documenting his comparison. You can
read it here:
Triangular Linkage Evaluation Criteria and Measurements

Spoiler: “So my conclusions on the comparison between systems is that I think
the 45 degree is a better system all around.”

Since then I think there have been some improvements made to the top mount
design but I don’t think anyone has tested them again since then.

Since that test there have been two major changes to address the problem
this found.

  1. the holes are now .25" instead of .26" (less play)
  2. the kit includes a metal center section so that the holes are at exactly
    the correct distance (and there is no chance of the mounting bolts flexing)

The result is that you are NOT going to be able to get the top mount kit to
‘click over’ like the earlier version did.

Now, I also changed the horizontal bars to be much thinner, and they are
now 7" hole to hole instead of 5" (so they will clear the handles of a 12"
wide router). But it doesn’t seem like this adds any noticable flex, even
under extreme pulls.

you can see the new version at

David Lang


#6

Nice! I knew there were improvements made, just wasn’t sure what the specifics were. Thank you for clarifying!


#7

If I can find a reasonable place to get them, I want to pick up reamers in .248,
.249, and .250 and find out what is the best fit I can get on the bolts rather
than just using a 1/4" drill bit

David Lang