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Light Sport Repair
E-Flyer
Check out our new lower prices on our online store: http://www.lightsportrepair.com/products.htm We carry Pennzoil
2 cycle air cooled engine oil |
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February 15, 2009 |
Number 5 |
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16 Hr ELSA
Courses Schedule Seats
available 02/21
– 02/22, 2009 PPC
– 03/28
- 03/29, 2009 04/04
– 04/05,2009 PPC— For Details Visit us at: We will travel to your location to
teach the 16 hr ELSA course for Airplane or Powered Parachute contact us for
details on how the coordinator can receive their course for Insurance
Offered For Destiny PPC’s The Destiny Powered Parachute
models XLT, XT, & ST have now been approved for liability and hull
insurance under the EAA insurance plan for Powered Parachutes. Even though the Destiny aircraft is no
longer being built, there is substantial product support and communication of
safety information through the network of dealers and distributors for the
Six Chuter PPC. This makes it possible
to bring the Destiny into the EAA Plan.
Visit www.eaa.org for more
information or call Bob Mackey (877)230-3252 Light Sport News
and Events 1ST ANNUAL
MICHIANA (C65) Come in on Friday the 7th of August and camp
at the airport Contact us for details (574)948-0065 Ultralight/Sport
Plane Seminar Guest Speaker Brian McCallen on Rotax® 912 Engine Maintenance March
14: Light Sport Expo Coulter Airfield (CFD), April
21-26: 35th Annual Sun ’n Fun Fly–In |
Effects on Formation of the Air/Fuel Mixture The pressure in the
carburetor float chamber has a considerable effect on the air/fuel ratio
supplied to the engine. If the float
chamber is below atmospheric pressure, then the engine will run lean. The pressure in the float chamber depends
on the pressure at the end of the two plastic vent pipes from the
carburetor. If they are both routed to
the back of the carburetor, as is fairly common, then the depression in this
area, caused by air flow, will weaken the mixture. The effect may not be significant in
itself, but if coupled with another problem, say a carburetor considerably
out of square, then overheating could occur.
Always make sure you use a suitable fuel. Some regular fuels may have just enough
octane rating, but due to the permissible refining tolerances may in practice
be below the recommended rating. A
fuel of too low a rating can lead to detonation or “pinking”, a metallic
tinkling sound. The likelihood of
detonation is increased if the mixture is lean or if there is overheating due
to other causes. Detonation can very
quickly cause an engine to seize or burn a hole through a piston. We recommend, therefore, that premium
petrol is used at all times, to be on the safe side. Unleaded fuels are becoming much more common and
in general will lead to a cleaner engine, abut in some countries may contain
a high percentage of alcohol (more than 10%), in order to maintain the octane
rating. This can create a number of
problems; The higher latent heat of alcohol can increase the risk of
carburetor icing. Alcohol can absorb
water, which may separate out, leading to blocked carburetor jets. Unleaded fuels are more prone to vapour
lock at high altitude. Alcohol can also adversely affect some plastic
and rubber components used in fuel systems – it can extract the plasticizer
from plastic fuel tanks, which will then harden and may crack, while the
residue can turn gummy and block the fuel system. High quality unleaded fuels can reduce
deposit formation and extend spark plug life, but make sure there is not a
high alcohol content before using. With any fuel, if you
are not going to use your aircraft for a long period of time (say more than a
month) then you should drain off all the fuel, including that in the float
chamber, to avoid the problems mentioned above, and the evaporation of the
light fractions of the fuel. Evaporation
makes starting difficult, and increases the percentage of oil in the
remaining fuel. The oil used in your
ROTAX® should be good quality
super two-stroke oil Information is from the Rotax® Repair Manual CHECK
OUT OUR REBUILT ENGINE 18 month/100 hr warranty http://www.lightsportrepair.com/for_sale.htm ROTAX® 503 WITH C-DRIVE $3,500 Engine is new with 0 hrs.
C-drive is 3.0:1. NEW C-DRIVE 3:1 $1,200 BRAND NEW 0 HOURS ROTAX® 582 WITH REBUILT ROTAX® 582 WITH ROTAX® 503 DCDI REBUILT 0
CHECK
OUT OUR GREAT LET
US HELP YOU http://www.lightsportrepair.com/products.htm ·
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Fuel Tester (to determine the amount of alcohol
in the fuel $7.00 ·
Fuel Pump Rebuild Kits $13.95 ·
BR8ES Spark plugs on sale for $2.00 ·
NGK Spark plug caps for $2.00 ·
Fuel and Oil filters for $1.75 ·
Stainless Steel Exhaust clamps for $31.00 ·
Icom A-6 Handheld Radio W/Charge $241.00 |
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