Page:Popular Science Monthly Volume 89.djvu/944

 930

��I'upulur Science Munthli/

��best operated by means of a spring-steel wire working inside of a 3^-in. outside diameter brass tubing. A suggestion for the construction of this is shown in Fig. 7. If the levers and tubes were secured directly to the steering post they would necessarily turn with it, but if a piece of steel tubing that loosely fits over the steering post is slipped in place and the lower end secured

��FIG 7

���Motor-controlling lever attachment to steering post and clutch-lever quadrant

either to the sloping footboard or to the wheel guide L, Figs, i and 2, the steering post can be turned inside the tube without interfering with the controls.

The clip A, Fig. 7, is looped as indicated so that when the cross-boll B is drawn up, the loops of the clip will bind on the under side of the tube, thereby holding the clip in place without drawing the boll B so tight as to interfere with the movement of the levers. Secure the upper end of the two pieces of H-in. brass tubing to the steering post about 2 in. below the levers by means of a single metal strap or clip. Run these tubes clown the steering post and then to the throttle and spark controls, securing the ends to some nearby jiart of the machine; then run th'j wires through the tubes, secur- ing them to the steering-post levers and the throttle and spark levers in any convenient manner.

For the length of time the motor-bob will be used, a reasonably satisfactory con- nection can be marie 1)\' simpl\- loojiing the ends of the wire through the holes in the levers and wrap[)ing the ends around the main wire as shown. I'or the gear-shift, make a lever and segment as shown in Fig. 8, notching the segment in proper posi- tion for the gear-setting. Disconnect the gear-shift mechanism of the motorcycle and run a K-'"- ""'"l from the lever to it.

For clul(li rjpcration, make a lever as

��shown at 0, Fig. 2. Bolt this to the frame side and let it come upward through the floor. Connection between this and the clutch-lever should be by means of a 5^-in. rod or steel tube. If the clutch can be made to operate by a pull instead of a thrust, then e.xtend the lever below the pivot so that the operation may be by means of a wire fastened to the lower end of the lever.

No special instructions have been given as to means of joining the various frame parts and a wide leeway has been allowed for individual ideas and facilities.

��Filtering Gasoline Through Chamois a Dangerous Performance

FROM a well known authority comes the statement that to strain gasoline through chamois is dangerous for the following reasons: When gasoline is poured on a chamois, static electricity is created and it is apt to fire the liquid. .\s long as the funnel fits the tank opening a ground is formed and there is no spark, but, if for any reason the funnel is held up or is not in contact with the tank, a spark is likely to jump across from the funnel to the metal of the tank with disastrous results.

���The funnel is held up by the seat board but a spark may jump the gap into the tank

Many tanks are set into the seats of the automobiles, as shown in the illustration, consetpieiitly the jKissing of the gasoline through the chamois in the funnel sets up the static, and if a sufficient amount is stored up, a jiunp spark issuing between the fuiiiul and the tank will be likely to cause .1 till- with serious results.

�� �