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Updated: May 27, 2025
For these engines, castor oil is the lubricant usually adopted, and it is pumped to the crankshaft by means of a gear-driven oil pump; from this shaft the other parts of the engine are lubricated by means of centrifugal force, and in actual practice sufficient unburnt oil passes through the cylinders to lubricate the exhaust valve, which partly accounts for the high rate of consumption of lubricating oil.
He tried the normal methods of release. Swinging round on his haunches, he caught the offending member between his two fore-paws, so as to ease it out by gentle side-shifts. Then he brought his tongue into play as a lubricant. Then he simply pulled. By this time he was fairly awake and could feel.
The command was no less imperative for being spoken beneath Spud's breath, and for the first time Chet's hopes soared high within him. It had all been so hopeless, the prospect of actual escape from the net that was closing about him. And now ! He unrolled the tight package of cloth to find a small can of black graphite lubricant done up in a jacket and blouse.
One of them was Char-less Boyle; the other was old Moore, poor as a church mouse, but a genial soul, and really put on the Board as a lubricant between Boyle and Raften. Boyle was much the more popular. But Raften was always made trustee, for the people knew that he would take extremely good care of funds and school as well as of scholars.
The next run yielded a little over a mile, and he was forced to stop within a few hundred yards of the snow slope leading to the Barrier and wait for more lubricant, as well as for the heat balance in his engine to be restored.
First, with a hard brush I cleaned out both sets of grooves, top and bottom. Then, into each groove I painted a thick coating of tallow and black lead, mixed into a paste and heated. By moving the panels backwards and forwards a great number of times I distributed the lubricant and brought the black lead to such a polish that the doors slid with the greatest ease and without a sound.
Remember that the model flies high, and select a wide open space. Do not push the model forward; just release the propellers, held one in each hand near the boss by the fingers and thumb. As a lubricant for the rubber use pure glycerine. It is advisable to employ a geared-up mechanical winder, since to make 1,800 turns with the fingers is rather fatiguing and very tedious.
She beamed at Milt, who was lacing a rawhide patch on a tire, before she remembered that they were not on speaking terms. They both looked extremely sheepish and young. It was Pinky Parrott who was the social lubricant. Pinky was always on speaking terms with everybody. "Ah, here she is! The little lady of the mutinous eyes! Our colonel of the flivver hussars!" But he got no credit.
M. Claude has recently made great progress on this point by the use, during the running of the machine, of the ether of petrol, which is uncongealable, and a good lubricant for the moving parts.
It was still stiflingly hot; its air was still reeking with the stench of burning lubricant, insulation, and metal; its floor was half covered by a semi-molten mass of what had once been vital machinery.
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