>> The recent alternator topic had a bracket design made of 4130 angle.>> I've trial fitted an alternator (60 amp, 8.5 lbs) to my engine and it
>> looks like I will need 1.5" angle to weld up into the upper permanent>> mounting brackets.  The lower bracket will be a slightly bent arm  >> (not
>> shown).   I'm having a hard time finding 1/8" 4130 angle in this  >> size.
>> I can get 304 stainless in 1.5" angle, but it is a lot harder to
>> machine.  Would mild steel be strong enough for these small, upper
>> brackets?  Or, does anyone have a resource for 4130 angle in small
>> quantities?
>> The pix also show the stock RX-8 belt idler/tensioner roughly sitting>> in place.  Obviously, the standard unit will not fit, but it gives me
>> an idea of what type of idler arrangement might work.   An
>> idler/tensioner will allow the belt to clear the crank position
>> sensor,and also allow the alternator to be fixed in place.    I'm  >> also not
>> going to keep the ignitors in their stock position, due to height
>> issues.
>> Thanks
>> Scott Gettings

>> Looks good.
>> .065" or .090" 4130 will work  fine if you
>> weld washers around the bolt holes. Long story but
>> it has to do with bolt bearing stress.
>> -------------------------------------------------
>> BTW Scott that is a cool looking oil pan. Where did that come
>> from?
>> Paul Lamar ...No rotor no motor.


> The oil pan is a Greddy that came with my engine.  It just happens to
> be on the bare engine because I'm drilling oil level sensor holes in
> the pan Ed made for me.  When I'm done, I'll put the pan on my RX8
> Shinka.
>
> Scott Gettings

Scott, I make my own 4130 angle by welding two pieces together. It is
easy and fast if you have a TIG.  Another advantage is that it will
be a true 90 degrees.     Jerry

Thanks, Jerry.  I'm still in the gas-welding era, with only fair
skills.  I'll weld little things on my plane, but I like to keep it as
simple as possible.  There are a lot of aerospace welders and
machinists around here at the Space Center -- so I can get anything
done with enough time and money..

Scott Gettings

I did not know you were that far North Scott. I could have stoped
in last week.

Paul Lamar

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