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Nitro Engine Boost Treatment Info and First
Hand Accounts
All my experience treating R/C car engines is related to the .26 nitro engine used in the Hot Bodies Lightning Street RTR. During this testing, I used Byron Originals Race premium R/C car fuel with 20% nitro and 16% lubrication. This fuel was used for both break-in and all additional engine runs. Break-in of the .26 engine was performed per the Hot Bodies Lightning Street Instruction Manual, page 6. • The initial setting of the high-speed mixture screw (needle
valve) on the carburetor was 4-turns (rich) from closed, per manufacturer's
recommendation. • The third tank of fuel was run at part throttle, low-speed. • During the fourth tank of fuel, the car was subjected to very short bursts of full throttle, but, in general, the speed was kept in the low to mid-range. The fifth and sixth tanks were run using higher average throttle settings resulting in higher car speeds. During the 6th tank of fuel, two shifts from first to second gear were noted. There was insufficient straightaway to allow any second gear full throttle operation. • Following tank number 2 and continuing through tank number
5, the high-speed mixture adjusting screw (needle valve) on the carburetor
was turned ccw (leaner) ¼ turn. This resulted in a final setting
of 3-turns cw (rich) from closed (the manufacturer's recommendation). The 7th tank of fuel was run on a course not suited to the `on-road' nature of the car. The course was short and rough, resulting in low speeds and less throttle than I would have liked. Tanks 8-12 were run on a flat straightaway
course of smooth asphalt. Tank number 8 was used as a baseline for
getting used to the shift between first and second gear and running
at extended full throttle conditions. The first Nitro Engine Boost
treatment was performed on tank number 9. The treatment procedure used was as specified in the Hot Bodies Nitro Engine Boost Engine Treatment Application Methods ® Method 1. This method comprises 5 steps: 1. Run engine to its operating temperature. Please note that I added the Nitro Engine Boost to a full tank of glow fuel. Near the end of the second tank of treated fuel (tank number 10), a noticeable (dramatic) improvement in full-throttle acceleration was observed. The shift between first and second gear occurred in less time than previously, and higher speeds were attained before the end of the straightaway. This can only be due to an increase in useable (available) horsepower. I believe that this increase is a result of a reduction in engine internal friction due to the effect of treatment with Nitro Engine Boost. An additional tank and a half of treated fuel were run through the engine and no additional benefit was noticed. The engine continued to run well. However, subsequent to breaking the car (the left front wheel nut backed off fully and was lost) at about ½ of the 12th tank of fuel, it was found that the exhaust pipe contained an excessive amount of oil from the burning of the fuel. This caused a definite change in the exhaust note (it got lower and sounded gurgling), idle smoothness decreased as compared with previous tanks, and throttle response suffered (again compared to previous tanks). Draining the pipe cured the problem and the engine returned to the sound and responsiveness and idle stability enjoyed after the second treated tank (number 10). After analyzing the above information, I conclude that the treatment
recommendation be the use of Method 1 and the treatment of two tanks
of fuel (each with one full applicator full of Nitro Engine Boost),
following break-in of the engine. I strongly recommend the use of
one full applicator of Nitro Engine Boost in every 10th
tank of fuel, thereafter. This will maintain optimum engine efficiency
and power output. It is acceptable for follow-on treatments (every
10th tank of fuel) to be made using Method 2 or Method 3. • starting
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