spinner backing plate

[Ray Toews]

I scored a free spinner in good condition but the backing plate is
gone, any body know what type and thickness of material I would use to
make a new one?

Ray

[Ray Toews]

I measured a few others and they seem to be between 50 and 65
thousands thick, I am going to try spinning it on a lathe and forming
it that way but am not sure what alloy to use, I think 2024 but if
anybody knows it would be appreciated. I have searched on the net and
found nothing under propellor spinner. Does it have to be heat treated
after forming or is it better left soft.
I have a front plate which I will be matching to the spinner,,,,I know
it would probably be more advisable to just buy one but I like to try
new things and spin forming a new back plate sounds interesting.

Ray

On Sun, 10 Oct 2004 23:23:03 GMT, Orval Fairbairn
> wrote:

>In article >, Ray Toews wrote:
>
>> I scored a free spinner in good condition but the backing plate is
>> gone, any body know what type and thickness of material I would use to
>> make a new one?
>>
>> Ray
>
>It really depends on the spinner and prop in question. Some backing
>plates are of complex shape and usually are .065" or more thickness.
>
>The frontplate is just as important as the backplate, too.

[Orval Fairbairn]

In article >, Ray Toews wrote:

> I scored a free spinner in good condition but the backing plate is
> gone, any body know what type and thickness of material I would use to
> make a new one?
>
> Ray

It really depends on the spinner and prop in question. Some backing
plates are of complex shape and usually are .065" or more thickness.

The frontplate is just as important as the backplate, too.

[Cy Galley]

What diameter is the back of the spinner? How many holes?

<Ray Toews> wrote in message ...
> I measured a few others and they seem to be between 50 and 65
> thousands thick, I am going to try spinning it on a lathe and forming
> it that way but am not sure what alloy to use, I think 2024 but if
> anybody knows it would be appreciated. I have searched on the net and
> found nothing under propellor spinner. Does it have to be heat treated
> after forming or is it better left soft.
> I have a front plate which I will be matching to the spinner,,,,I know
> it would probably be more advisable to just buy one but I like to try
> new things and spin forming a new back plate sounds interesting.
>
> Ray
>
> On Sun, 10 Oct 2004 23:23:03 GMT, Orval Fairbairn
> > wrote:
>
> >In article >, Ray Toews wrote:
> >
> >> I scored a free spinner in good condition but the backing plate is
> >> gone, any body know what type and thickness of material I would use to
> >> make a new one?
> >>
> >> Ray
> >
> >It really depends on the spinner and prop in question. Some backing
> >plates are of complex shape and usually are .065" or more thickness.
> >
> >The frontplate is just as important as the backplate, too.
>

[Ray Toews]

About 12 inches, depending on final fit and how far into the spinner
I recess the backing plate, I have allready cut the spinner down about
2 inches as it was too big . Anywhere between 10 and 12 inches would
look good on the airplane and fit between the cooling holes in the
nose bowl. Probably six screws between each blade so 12 fastening
holes.

Thanks

Ray
On Mon, 11 Oct 2004 02:04:27 GMT, "Cy Galley" >
wrote:

>What diameter is the back of the spinner? How many holes?
>
><Ray Toews> wrote in message ...
>> I measured a few others and they seem to be between 50 and 65
>> thousands thick, I am going to try spinning it on a lathe and forming
>> it that way but am not sure what alloy to use, I think 2024 but if
>> anybody knows it would be appreciated. I have searched on the net and
>> found nothing under propellor spinner. Does it have to be heat treated
>> after forming or is it better left soft.
>> I have a front plate which I will be matching to the spinner,,,,I know
>> it would probably be more advisable to just buy one but I like to try
>> new things and spin forming a new back plate sounds interesting.
>>
>> Ray
>>
>> On Sun, 10 Oct 2004 23:23:03 GMT, Orval Fairbairn
>> > wrote:
>>
>> >In article >, Ray Toews wrote:
>> >
>> >> I scored a free spinner in good condition but the backing plate is
>> >> gone, any body know what type and thickness of material I would use to
>> >> make a new one?
>> >>
>> >> Ray
>> >
>> >It really depends on the spinner and prop in question. Some backing
>> >plates are of complex shape and usually are .065" or more thickness.
>> >
>> >The frontplate is just as important as the backplate, too.
>>
>
>

[Orval Fairbairn]

In article >, Ray Toews wrote:

> I measured a few others and they seem to be between 50 and 65
> thousands thick, I am going to try spinning it on a lathe and forming
> it that way but am not sure what alloy to use, I think 2024 but if
> anybody knows it would be appreciated. I have searched on the net and
> found nothing under propellor spinner. Does it have to be heat treated
> after forming or is it better left soft.
> I have a front plate which I will be matching to the spinner,,,,I know
> it would probably be more advisable to just buy one but I like to try
> new things and spin forming a new back plate sounds interesting.
>


5052 or 6061 would be more appropriate, as they are weldable. Use a low
temper, as the stuff will work harden.

[Dick]

Ray,
How did you cut the spinner down and keep things square?
Thanks, Dick
<Ray Toews> wrote in message ...
> About 12 inches, depending on final fit and how far into the spinner
> I recess the backing plate, I have allready cut the spinner down about
> 2 inches as it was too big . Anywhere between 10 and 12 inches would
> look good on the airplane and fit between the cooling holes in the
> nose bowl. Probably six screws between each blade so 12 fastening
> holes.
>
> Thanks
>
> Ray
> On Mon, 11 Oct 2004 02:04:27 GMT, "Cy Galley" >
> wrote:
>
> >What diameter is the back of the spinner? How many holes?
> >
> ><Ray Toews> wrote in message ...
> >> I measured a few others and they seem to be between 50 and 65
> >> thousands thick, I am going to try spinning it on a lathe and forming
> >> it that way but am not sure what alloy to use, I think 2024 but if
> >> anybody knows it would be appreciated. I have searched on the net and
> >> found nothing under propellor spinner. Does it have to be heat treated
> >> after forming or is it better left soft.
> >> I have a front plate which I will be matching to the spinner,,,,I know
> >> it would probably be more advisable to just buy one but I like to try
> >> new things and spin forming a new back plate sounds interesting.
> >>
> >> Ray
> >>
> >> On Sun, 10 Oct 2004 23:23:03 GMT, Orval Fairbairn
> >> > wrote:
> >>
> >> >In article >, Ray Toews wrote:
> >> >
> >> >> I scored a free spinner in good condition but the backing plate is
> >> >> gone, any body know what type and thickness of material I would use
to
> >> >> make a new one?
> >> >>
> >> >> Ray
> >> >
> >> >It really depends on the spinner and prop in question. Some backing
> >> >plates are of complex shape and usually are .065" or more thickness.
> >> >
> >> >The frontplate is just as important as the backplate, too.
> >>
> >
> >
>

[B2431]

>Date: 10/13/2004 19:16 Central Daylight Time
>Message-id: >
>
>Ray,
>How did you cut the spinner down and keep things square?
>Thanks, Dick

Determine how much to you want to trim off. Set a marker or scribe that height
above a flat surface. The surface has to be flat at least as big as the
diameter of the spinner. Rotate the spinner against the marker. This assumes
the spinner is square to begin with.

There are a few ways to square it up if it isn't.

Dan, U.S. Air Force, retired