[SEL] ArrrGGhhh! I'm back after 6 years lurking - re: FMZ gears

[Edd Payne]

Al.You need a AB33 or AB34 American Bosh.They were fitted to all F/M with 
helical gears( and many with straight gears) They are a trip mag.The other 
mag you mention is probably of a Wisconsin.
EDD PAYNE
PO Box 364 Gulgong N.S.W
Australia
2852
Phone:0263742387
edsengns at optusnet.com.au
edsengns
----- Original Message ----- 
From: "Al Harris" <al.harris at rustic-engines.com>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Thursday, December 04, 2008 3:24 PM
Subject: Re: [SEL] ArrrGGhhh! I'm back after 6 years lurking - re: FMZ gears


> Right Edd, thanks. I was confused by the term pinion (automatically
> thought the pinion was the gov offshoot). I'm confused by a few
> terminologies actually. Spindle, pinion, with thread, with shaft
> ...arggggg. I'll get my head around it soon, I hope.
>
> I was about to check FM maggy status with Graham, as I have an FM-J with
> diag cut teeth, but there's 22 of them. That wouldn't work on a 48 or 50
> tooth cam gear. Now I'm wondering what FM engine it fits. :-(
>
> Cheers,
>
> Al Harris
> Summer Clarence Coast NSW Oz
>
> al.harris at rustic-engines.com
>
>
>
> Edd Payne wrote:
>> Hay Al read his post again,the 12 teeth is the governor gear.
>> EDD PAYNE
>> PO Box 364 Gulgong N.S.W
>> Australia
>> 2852
>> Phone:0263742387
>> edsengns at optusnet.com.au
>> edsengns
>> ----- Original Message ----- 
>> From: "Al Harris" <al.harris at rustic-engines.com>
>> To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
>> Sent: Thursday, December 04, 2008 2:06 PM
>> Subject: Re: [SEL] ArrrGGhhh! I'm back after 6 years lurking - re: FMZ 
>> gears
>>
>>
>>
>>> Firstly, I have no relatives that I know of in "mexico".
>>>
>>> Secondly, a 25-50-12 setup is going to put your timing out isn't it, by
>>> 2 teeth per revolution.
>>>
>>> Don't you need a 25 tooth maggy gear running off the 50 tooth cam gear.
>>>
>>> Cheers,
>>>
>>> Al Harris
>>> Summer Clarence Coast NSW Oz
>>>
>>> al.harris at rustic-engines.com
>>>
>>>
>>>
>>> Graham Harris wrote:
>>>
>>>> Dammit 6 years of lurking ends just like that...I can't even remember 
>>>> how
>>>> to post!
>>>>
>>>> Al Harris, I went down to my shed and counted the helical teeth remains
>>>> on my ZAA gears for yer. All 3 are rooted but countable - 48 timing, 24
>>>> pinion, 11 governor.
>>>>
>>>> Now to fix my Z, I'd have to find 3 helical gears pretty well 
>>>> inmpossible
>>>> so will be replacing with straight cut gears because my FMZ S/N is 
>>>> right
>>>> near the change back to straight cut gears (1925). It's a rotary mag 
>>>> and
>>>> therefor all I'd have to find/make is a 12 tooth governor gear which is
>>>> 1.2" + 100 thou diameter for 12 teeth 10pitch. 25-50 tooth 10 pitch 
>>>> gears
>>>> are pretty common for 1-1/2 HP engines, machining work needed though.
>>>> 25-50-12 in straight cut keeps the correct centre distances.
>>>>
>>>> By the way - could we be related?
>>>>
>>>> Graham Harris, Melb, Oz
>>>>
>>>>
>>>> From: Al Harris <al.harris at rustic-engines.com>
>>>> Subject: Re: [SEL] FMZ Gear and Timing questions.
>>>>
>>>> You must remember, I was more confused by the fact that my crankshaft
>>>> gear has 24 teeth on it. So I was trying to count 48 teeth on the
>>>> straight cut gear in the picture. :-(
>>>>
>>>> Cheers,
>>>>
>>>> Al
>>>>
>>>> It's cleared my vision though, thanks fellas. ;-)
>>>>
>>>> The sad part is that a 48 tooth diagonally cut FMZ cam gear has not 
>>>> come
>>>> into sight. :-(
>>>>
>>>>
>>>>
>>>>
>>>>
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>>
>>
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