What Does R34 2 PL Mean in an Isometric Drawing?

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Discussion Overview

The discussion revolves around the interpretation of the notation "R34 2 PL" in the context of isometric drawings, specifically focusing on the meaning of the radius and its application in design. Participants explore different interpretations of the radius and the geometric shape involved.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant suggests that "R34 2 PL" indicates a radius of 2mm and describes the curve as a quarter of an ellipse.
  • Another participant proposes that it means a radius of 34mm at two locations, indicating symmetry in the casting, and mentions that the actual profile consists of an arc segment with potential straight run-off lines.
  • A subsequent post reiterates the idea of a radius of 34mm at two locations but raises a concern that such a radius is impossible given a vertical distance constraint of 60mm.
  • Another participant describes the shape as a quarter circle merging into a vertical line.
  • The final post indicates understanding after the clarification about the shape.

Areas of Agreement / Disagreement

Participants express differing interpretations of the notation, with some agreeing on the radius being 34mm while others challenge its feasibility based on dimensional constraints. The discussion remains unresolved regarding the exact meaning of "R34 2 PL."

Contextual Notes

There are limitations regarding assumptions about the dimensions and the specific geometric interpretations, which are not fully clarified in the discussion.

Catapult
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E2Lb749.jpg
I'm confused about "R34 2 PL" means.
I'm guessing the radius of the round is 2mm and the curve is a quarter of an ellipse like so:
lR1OTEh.png
Am I right?
 
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It should mean radius 34 in two places - ie same on right and left locations on casting . Actual profile is made up of an arc segment of the given radius and there may also be short sections of straight run off lines .
 
Nidum said:
It should mean radius 34 in two places - ie same on right and left locations on casting . Actual profile is made up of an arc segment of the given radius and there may also be short sections of straight run off lines .
That's what I thought but a radius of 34 is impossible because the vertical distance from the top to the bottom of the curve has to be 60
 
It's a quarter circle merging into a vertical line .
 
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Nidum said:
It's a quarter circle merging into a vertical line .
Ah I got it now. Thank you for your help
 

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