Half-Scale Gardner Model 0 Build – Part 2 of 2

Peter Rooke finishes the Gardner Model 0 scale engine after finishing the remaining pieces and resolving issues with the gas feed and mix.

| February/March 2019

01-half-scale-gardner
Photos by Peter Rooke


Manufacturer : Alyn Foundry, North Wales, U.K.
Year : N/A
Serial No. : 2292
Horsepower : 3/4hp @ 450rpm (full-size engine)
Bore & stroke : 1-3/8in x 2in
Flywheel : 9-1/2in
Ignition : Hot tube
Governing : Volume
Cooling : Tank-cooled
Weight : 39lb

06-assembly-trial
The completed gear and eccentric assembly trial fitted together.

The kit of parts included two cut gears, with the only work necessary being to drill and tap the smaller gear for a lock screw above its keyway. The main gear was mounted on a bronze bearing mounted on a shaft fitted to the engine block. A spiral oil groove was cut in this shaft to help lubrication. The stub for this shaft fitted in the engine casting and it was turned 0.037 inch off center, thus providing a means to adjust the backlash and the degree that the two gears meshed.

02-offset-hole
Drilling the offset hole for the eccentric for the timing gear.



The two eccentric straps were machined from the supplied castings and their holding discs were turned from 1.125-inch-diameter steel, with the hole for the shaft offset by 0.125 inch. These holding discs were fitted either side of the main gear wheel, and all shared the same bearing.

04-eccentric-strap
Setting up to drill the eccentric strap.



SUBSCRIBE TO GAS ENGINE MAGAZINE TODAY!

Gas Engine Magazine A_M 16Gas Engine Magazine is your best source for tractor and stationary gas engine information.  Subscribe and connect with more than 23,000 other gas engine collectors and build your knowledge, share your passion and search for parts, in the publication written by and for gas engine enthusiasts! Gas Engine Magazine brings you: restoration stories, company histories, and technical advice. Plus our Flywheel Forum column helps answer your engine inquiries!

Be sure to take advantage of the Square Deal Subscription Program.

  • No Missed Issues.

  • No Renewal Notices.

  • No Additional Cost.

The Square Deal Subscription Program is designed as a paperless transaction with automatic renewals at a preferred low rate.   With advanced electronic notification, a 100% satisfaction guarantee and an easy opt-out plan, the Square Deal Subscription Program is the best value, risk free, eco-friendliest way to subscribe.




Facebook YouTube

Classifieds