Re: Unknows HMV - 4047E
Posted: Sat Oct 26, 2024 11:30 am
hey guys, look what I find inside of the 4047e
Interesting newspapers I tried to read some of it. Were they found under the motor or in the horn?
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Unknows HMV - 4047E
Page 2 of 2
Re: Unknows HMV - 4047E
Posted: Mon Oct 28, 2024 7:08 pm
Re: Unknows HMV - 4047E
Posted: Mon Oct 28, 2024 7:11 pm
I’m leaving it to Inigo to verify these calculations.Andrew Reed wrote: Wed Oct 23, 2024 3:45 am Update, the soundbox is unbred she make (with the needle) a 150 Gramm and the presure is about 118Gram
Calc ;
0.118*9.81 = 1.15758 N (newtone)
1,15758 / 0,0000007 = 1 653 685,71 Pa for M2, 1,15758 / 0,7= 1,65 Pa per Mn
1.65Pa for the Pressure on maid by the Needle and the Soundbox
Re: Unknows HMV - 4047E
Posted: Tue Oct 29, 2024 12:21 am
Ahem... 
Yes, that good calculation establishes the pressure at the needle point as 1.65MPa, accounting for an area of contact at the point needle estimated in 0.7 mm2, which may seem correct, with a soundbox weight of 118 grams.
For your comparison, this pressure may be the typical soil pressure under a house foundation mat, for instance. This number may sound large, but think that current mild steel ultimate resistance, as that of the needle, is in the order of 400MPa, almost 250 times larger.
I hope colleague jamiegramo is happy with this...
Yes, that good calculation establishes the pressure at the needle point as 1.65MPa, accounting for an area of contact at the point needle estimated in 0.7 mm2, which may seem correct, with a soundbox weight of 118 grams.
For your comparison, this pressure may be the typical soil pressure under a house foundation mat, for instance. This number may sound large, but think that current mild steel ultimate resistance, as that of the needle, is in the order of 400MPa, almost 250 times larger.
I hope colleague jamiegramo is happy with this...
Re: Unknows HMV - 4047E
Posted: Tue Oct 29, 2024 4:54 am
Sold! I'll gladly take two, please.Inigo wrote: Tue Oct 29, 2024 12:21 am Ahem...
Yes, that good calculation establishes the pressure at the needle point as 1.65MPa, accounting for an area of contact at the point needle estimated in 0.7 mm2, which may seem correct, with a soundbox weight of 118 grams.
For your comparison, this pressure may be the typical soil pressure under a house foundation mat, for instance. This number may sound large, but think that current mild steel ultimate resistance, as that of the needle, is in the order of 400MPa, almost 250 times larger.
I hope colleague jamiegramo is happy with this...
Re: Unknows HMV - 4047E
Posted: Wed Oct 30, 2024 8:19 am
The soundbox looks like a Columbia No 15 to me with a different front plate. However there was an Odeon soundbox, used on the Bauhaus, that appered to be based on the Columbia. Picture attached.
Odeon were also incorporated into EMI so it makes sense!
Odeon were also incorporated into EMI so it makes sense!
Re: Unknows HMV - 4047E
Posted: Tue Nov 05, 2024 8:38 am
Sorry about the fact i take so long to make a respose, by the way Yes i found it under the motor
Re: Unknows HMV - 4047E
Posted: Fri Nov 08, 2024 3:55 am
Bonjour Andrew,
Voyant le journal, est-ce que vous vous habitez également dans le nord, au moins près de Lille ?
Garret
Voyant le journal, est-ce que vous vous habitez également dans le nord, au moins près de Lille ?
Garret
Re: Unknows HMV - 4047E
Posted: Tue Nov 12, 2024 8:26 am
Oui, je suis du 59, meme si c'est plus du coté du douaisie, par ailleurs les diques viene d'arras ou lille
Re: Unknows HMV - 4047E
Posted: Tue Nov 12, 2024 12:57 pm
The newspaper is "The Voice of the North" from Lille, FR and is still inn existence.
https://www.lavoixdunord.fr
https://www.lavoixdunord.fr