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. 



