Ranjit has
been around Pylon Racing almost as long as I have. Have a
look at his run down in AUSTRALIAN TEAM and INNOVATORS.
He is Marketing a racing 40 engine - ABC or AAC. Essentially it is set up for Straight 4:1 fuel (No Nitro). However he will let you know what to do to set it up for Nitro. JUST ASK!
He has a large workshop and will:-
Speed modify any engine
Machine any component
If you need a piston for any engine he will make it for you as well has hone the old liner - it comes back like new - sometimes better than the original: I am running two of his pistons in my engines OS11 ps and Nelson QM40 and both engines are performing better than the originals?
Supply Racing Kits
Will manufacture Piston & Liners to order AAC and ABC (Min runs will apply)
Sell you his latest RPM 40 engine.
Contact him: ph 0245723795 or 362 Pitt Town Rd Pitt Town NSW Australia 2756
Orenshaw Pylon Pipes:
Jim
Orenshaw has been making Carbon Fiber Pipes for Racing Engines for
Ages. I personally use his pipes on my Quarter Midget (21's).
Pictured to the left are the two products under review.
Definitely the weakest link in the QM 40 engine is its muffler. The problem is due to its canter lever design - meaning it is suspended at one end and everything is flopping around at the tail end. Under vibration this leads to breakage, when fatigue sets in. The same can be said for the inner tube pipe. The lighter you can get this tube the longer it will last - so Jim makes it out of Carbon Fiber Tube (Weights almost nothing).
Another problem is the parts of the original aluminum muffler often unscrews themselves. I have tried to reglue them back with special glues - but this is usually unsuccessful. Jim's pipe is all one piece - nothing to become unattached.
Jim has now come up with an excellent design. The magic Muffler is attached to the engine via an exhaust stub. It sits on a silicone tube at this location. I then wrap some very light wire around the pipe and then onto the engine to keep this in place. I then support the tail end loosely to the fuselage - also with a silicon mount. So the pipe is not only light but it is almost totally protected from vibration. This is a great idea!!
Jim does not bother to make up the exhaust stubs - they are easy to make, and it is better that you get it customized for your particular engine.
Pictured above are the two products that Jim makes.
au $100 for the Magic Muffler - au$60 for the 21 size pipe.
Remember the above is Australian Dollars!! (Half that of US$) postage will be extra!!
You can contact Jim 03 8704 2416.
He lives in Melbourne Australia.
This business is run By Karl and Frank
Harrod . They produce all what is required to
be in Pylon Racing.
Les Bollenhagen has been with Aeromodelling all his
life. He now owns a business that manufactures all types of GRP
propellers. 
Stuart Sherlock owns this business. He
has purchased a CNC Lathe and is able to make up very accurate
moulds for propellers. Many of the leading pylon pilots are using
his props. He will mould props for you - ask for a quote. He sell
all types of performance props - including those for large scale
racing - down to single bladed Half A props.
Robin Heirn runs this business from his home on a
full time basis. His back ground is that of a CL speed modeler. 
Pylon Racing Supplies
for News Zealand & Anywhere Else.