Pratt & Whitney R-1830 Twin Wasp

Parts and Price List

Prices current at February, 2010
Click on picture for construction photos.
All castings are A-356 aluminum unless otherwise noted, heat treated to T-6 temper.

Description Qty Price each Extended
Investment cast cylinder head castings, front row 7 60.00 420.00
Investment cast cylinder head castings, rear row 7 60.00 420.00
Investment cast pistons 14 6.00 84.00
Screw cut threads in heads to accept cylinders * 14 15.00 210.00
Crankcase nose casting, pressure cast 1 65.00 65.00
Investment cast 4140 steel rockers, as cast 28 6.00 168.00
Valve springs 28 4.00 112.00
Valve caps, pressed steel 28 1.50 42.00
Valve retainer (e-clips) 28 0.50 14.00
Valves, finished, stainless steel 28 8.50 238.00
Valve cages, finished, phosphor bronze 28 8.50 238.00
Elastic stop nuts, nyloc type as used on crankcase nose, etc # 2-56 100 26.00
Steel threaded rod for studs, # 2-56 thread x 12 inches 4.00
High speed steel tap # 2-56 thread 2 flute spiral point 12.00
Investment cast prop hub. Two halves, broached to fit prop shaft 10 tooth spline, semi-machined 1 150.00 150.00
Plus shipping/handling air post USA 26.00
Canada 35.00
UK and Europe 45.00
Australia and Asia 55.00

* (optional)

Remit in U.S. Funds to:

     Bruce B. Satra 
     Vernal Engineering Co.
     2277 South,  1500 West
     Vernal, Utah  84078

     Phone/FAX (435) 789-6052


Full Drawings

Available from the designer, RB Roach. The set is (Australian dollars) $ 165.00 including air post paid. Bob accepts money order, bank cheque or U.S. dollars cash. Enquire at bank for exchange rate.
Bob also offers the molded carbon fibre propeller blades for this engine—enquire for prices and details.
	Mr RB Roach
	14 Woodlake Drive
	Craigburn Farm
	SA 5051

bobroach1 (at)


Items from Central Utah Tool

Internal gears, finished cylinders and other parts are available from:
        Mr Chris Lauridsen
        775 South University Avenue
        Utah   84601

        FAX 801-374-2850
Very reasonable and high quality; please contact Chris direct for information and prices on the items he offers.


Spark Ignition Components

	Roy Sholl
Please contact him directly also for prices and information of items he offers.

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