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Old 02-08-2014, 08:37 PM   #11
pmdec
 
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Hi,

It is not possible to tell that two props are of the same serial from a picture. The only way is from markings. So,
- or you find airworthy documents (and those ones for MS-502 and 505 had to be revised ones, because your prop serial 825-A1 didn't exist when those planes made their first flight),
- or two pictures (two because the markings can't be both readable on one pic) of the prop on a 502 or 505 where you can read all the markings on it (825-A1 AND MS-50x)... Very unlikely!

But why do you want a prop of the same serial could fit a 502 or a 505? Even if this happen to be true, it would be true for the serial, but not for your very prop: The marking "MS-500" forbids to use it on a 502 or a 505, except if the prop pass an "exam" and is stamped again with valid markings for MS-502 or 505. IMHO.

Regards,
PM
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Old 02-09-2014, 12:33 AM   #12
pascaltf
 
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I'm glad that it is from a MS-500 (and nothing else), but I only wanted to know if it's the same kind of prop used on a 502/505.
I hope that there is a way to find out on which plane it's used (army/civilian), for how long and what"s happend with it.
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Old 02-15-2014, 04:27 AM   #13
pascaltf
 
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Is it normal that the hub of my prop has 10 bolts instead of 8 for a MS500?
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Old 02-15-2014, 08:43 AM   #14
pmdec
 
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Hi,
Yes. All serial 825-A1 and 825 I have seen had this 10 holes hub. I do think hub caracteristics are "include" in the serial drawings, at least from around 1922 in France. One more fact that forbids the use of this serial on MS-502 (see http://www.lecharpeblanche.fr/blog/w...-AZCP-0006.jpg ) or MS-505 (see http://upload.wikimedia.org/wikipedi...Marc%C3%A9.jpg ) which have both 8 bolts hubs.

Regards,
PM
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Old 02-15-2014, 01:44 PM   #15
pascaltf
 
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PM, again thank you very much for your help and information. I have 2 little questions, is there a way to find out from which plane/company my prop was and do you maybey have a picture of a MS500 were you can see the hub/prop with the 10 bolts .
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Old 02-15-2014, 04:34 PM   #16
pmdec
 
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Hi,

Except if you take yourself the prop out of the plane, or you have its "book" and the prop number is written in it, it is not possible to know from which one the prop came. Props are like tires on cars and are changed when necessary, except that on aircraft all repairs are filed and the spare parts numbers are memorised. Il is not even sure your prop has been fitted on a plane: they are not rare parts and many propellers on the market are spare parts never used, because it is easier to find a propeller in a no more usefull stock than to take it out of a plane.

And yes, you can see MS-500 with 10 bolts propeller. For example, two pictures on this page show one of them:
http://avions-de-la-guerre-d-algerie...-41640183.html
The last one ( http://img.over-blog.com/600x423/1/9..._Aout_1955.jpg ) where you can even see the shape of the Merville decal and that the blade tips have a lighter colour (French habit is yellow),
And the same on the third picture ( http://a133.idata.over-blog.com/600x...ntier2-338.jpg ) but less clear.
You have to copy and paste the pics to enlarge them (and have the second lighten). They are not very clear, but the ten bolts are a sure fact and those "amateur" pics are taken "in the fields", so you can be sure they are true ones and relatively well dated.

Regards,
PM
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