View Single Post
Old 03-11-13, 12:38 PM
  #2  
LWB_guy
Senior Member
 
LWB_guy's Avatar
 
Join Date: Apr 2008
Posts: 296
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I attached a 3-view drawing of my Vision USS handlebar so you can
have your machinist make another one from a 7/8" diameter steel tube.

No, sorry, I don't want to sell my Vision. There's a Yahoo! Vision riders group. Check there.

top of handgrip
|
|
|
|
|.......................................................................................stem
\________________________________________________||||||



This is about how half the handlebar looks from the front. It only shows half the actual handlebar, from the top of the handgrip to the center
of the stem. It appears to have a single bend in it. But it actually
has two bends, a downward-angled horizontal bend at A and a right
angle at B.

From A to A on the opposite side is a straight line. From A to B is a
straight line. From B to C is a straight line. The two bends are curved, but I don't know how to measure the radius of curvature.

I made three-view drawings below where I switched from | and \ and - to asterisks to represent the metal tubing on two of the views.

Took these measurements today. Two bends per side, inboard bend of 27.5deg at A and outboard 90 deg. bend upward at B, end of handgrip at C.

Dunno why bend locations are slightly different left & right, maybe they
are supposed to be the same? maybe not? Maybe my measurements were off?

-------------------------------------------------------------------------------
all measurements in decimal inches +- 1/16 in. and in
degrees +- 0.5 deg

A - location of inboard bend
B - location of outboard bend
C - top of handlebar grip
-------------------------------------------------------------------------------
NOTE 1: For clarity, only half the handlebar is shown, from the handgrip to the center of the stem.

NOTE 2: Distance BC was measured with handgrip in place, so it is from the centerline of the horizontal tube to the top of the handgrip.

NOTE 3: A is 7.75 on RHS; 8 on the LHS; dunno why the difference

NOTE 4: Drawings are NOT to scale! I used leading dots ..... for placing labels on drawings---just because this web page's text preprocessor deletes spaces. So ignore the dots.
--------------------------------------------------------------------------------
* C......................BC = 8.6875
*
*
* B
... *
.......*************************************************|||||
........A....................................................stem

.................................FRONT VIEW








............................................|| C
............................................||
............................................||
................................o=====o
................................A..........B

......................AB is shown horizontal here, but actually is bent
......................downward 3.5 deg. from horizontal at A.
......................Angle ABC is a right angle.

...............................SIDE VIEW










[FRONT] bar is bent back 27.5 degrees at A
|||||***************************************************** A
stem............................................................*
[BACK]..........................................................*
.......................................................................*
.........................................................................*
...........................................................................* ......this angle = 27.5
.............................................................................*
...............................................................................* B


............................................................TOP VIEW

Last edited by LWB_guy; 03-11-13 at 12:47 PM.
LWB_guy is offline