[AT] Magnetoes

[Larry D Goss]

The Nebraska Test Book says it's a Robert Bosch FU4 ARS.

Larry

----- Original Message ----- 
From: "Keith Kinney" <kkinney at herculesengines.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Thursday, December 21, 2006 10:42 PM
Subject: Re: [AT] Magnetoes


> What would be the correct magneto for a 1930 Case model C?
> Thanks.
> Keith
> 
> 
> At 10:01 PM 12/21/2006, you wrote:
>>    Most magnetoes were standardized in 1939. Prior to this, many 
>> manufacturers had their own magnetoes and mounting system. The 
>> industry standardized magnetoes to 3 commom types of mounting and 
>> operating system. The common flange mount is available with gear 
>> drive and the cross tang drive. The base mount was either shaft or 
>> cross tang drive. The magnetoes are virtually interchangable 
>> between engines with the same number of cylinders and drive 
>> arrangement. The primary difference is in lag angle for starting, 
>> which with most tractors is not that much different and can be 
>> changed. Rotation can be changed by reversing the direction of the 
>> impulse coupling spring and aligning the rotor drive gear.
>>    During WW11, Case tractors could have come from the factory with 
>> any of 5 different magnetoes. Virtually all of the Case magneto 
>> production was devoted to building magnetoes for aircraft engines, 
>> so to keep the tractor lines running they bought mags from 
>> Faribanks-Morse, Wico, IHC and Bosch. My 1944 Case S has a IHC 
>> magneto from the factory.
>>
>>                        Gene
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>>
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> 
> Keith Kinney
> Evansville, Indiana  USA
> www.HerculesEngines.com 
> 
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