Hemingway Kits The Kiwi Mk2 - Edgar T Westbury

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Internal Combustion

The IC Engines

The Kiwi Mk2 - Edgar T Westbury


	The Kiwi Mk2 Ref: Kiwi The Kiwi Mk2 is a 15cc, OHV 4 stroke with a big reputation. Originally designed by Westbury in 1935 it was a tremendously popular project due in no small way to the complete absence of commercially available model engines during the war years. When updating the design in 1960 Westbury commented that "the Kiwi has always been the favourite of the beginner, who could be fairly sure of making it and getting it to run successfully". Westbury seldom quoted performance figures for his designs, arguing that build quality varied so widely that a hard number would be misleading. However... the Mk1 Kiwi returned 5/8bhp @ 8,500 rpm on Professor D H Chaddick's custom built dynamometer; enough to power a 24" hydroplane at 40mph! With its ball race main bearings, stiffened crankcase and cooler running cylinder, your Mk2 Kiwi could well hit 50bhp per litre! The engine has a conventional British motorcycle appearance; perhaps a BSA C15 or a Norton ES2. With a bore x stroke of Ø1" x 1 1/8", the Kiwi stands 6" tall from sump to rockers. The Kiwi's simplified camshaft operates open push rods, rockers and vertical overhead valves so aspiration of the running engine can be readily observed; a fascinating feature! The carburettor for the Kiwi is simple yet well conceived; providing the mixture compensation that is essential to flexible running. A cast float chamber accepts a balsa wood (or cork) float for further refinement. Lubrication is via a metered drip feed system which is remotely mounted from the engine. The castings for this project are well proven and the engine can be ordered with either an air cooled or water cooled cylinder jacket and head. The Kiwi has been successfully built and run by thousands of IC novices over the past 70 years and we trust that, having built one, you too will appreciate the appeal of this timeless classic.


Kiwi Mk2 - Drawings & Construction Notes Ref: HE 1404 The Kiwi Mk2 is set on 2 A1-size sheets with its carburator shown on a separate A1-size drawing and CB layout on a loose A3 drawing. Westbury's 1960 build notes are included for the Mk2 and, for posterity, we have include the 1935 build notes for the original Kiwi engine; 52 pages in all. The drawings and notes contain all of the details required to build either the air or water cooled version of the Kiwi Mk2. Price: £30.00


The Kiwi Mk2 - Material Kits Ref: HE 1400 The Kiwi Mk2 material kit includes the vast majority of items required to complete the engine as originally designed. Electrical components (points, coil, spark plug...) can be found separately in the IC Engine Accessory section and plans and construction notes can be ordered above. The bill of materials includes: · (13) Aluminium and gun metal sand castings · (2) Iron Piston Rings · (2) Valve springs · Valve timing gear pair · (20) Sawn lengths of bar material (free cutting and stainless steel, bronze, cast iron, brass, Tuffnol, silver steel and spring steel) · BA hex nuts Price: £192.50
Choose Air or Water Cooled Barrel and Head

The Kiwi Mk2 - Castings ONLY Ref: HE 1405 If you want to minimise shipping costs or if you are particularly well stocked with supporting materials, you may prefer to order just the essentials. This item buys the 13 castings available for either the air or water cooled Kiwi Mk2: Crankcase Front & Rear, Timing plate, Cylinder Jacket & Head, Piston, Con Rod, Timing Braket, Tappet Guide, Carburettor Body, Float Chamber, Balance Weights Price: £124.00
Choose Air or Water Cooled Barrel and Head