bending cast driver baskets

tom1356 · 5th July 2007, 04:53 PM

Has anyone had success in bending back a damaged cast driver basket?
I have a driver that was damaged in shipping.
Is there a right way to attempt a repair?

richie00boy · 5th July 2007, 05:12 PM

Just send it back. Even if you could bend it, you probably wouldn't get it right all over, and later down the line it might just all crack anyway.

freddi · 5th July 2007, 05:17 PM

I just busted a quarter section out of an expensive coax by knocking down when grid power was out - seems like impact would "work harden" the bent area making efforts to straighten dubious/futile

tom1356 · 5th July 2007, 06:39 PM

It's a 1947 Tannoy Monitor Black. The insurance may reimburse me but,
I need to save it either way.

cyclotronguy · 5th July 2007, 08:41 PM

Tom,

Depends upon how bent and where bent... and more to the point how determined you are to repair. IF it's damaged to the point where you have nothing to lose... then your options are unlimited.

Lets look at worst case and perhaps silly scenario; take it all apart... cut, fixture the pieces and tig weld the frame back together.... re-machine as required.

Heck, I know guys that rescued an airplane which had crashed and lay forgotten for 50+ years in the jungles of Borneo. After that a speaker basket seems kinda easy.

Much is possible if you are willing to throw caution to the wind... and you can find someone who wants a task more for the thrill than the money.

Cyclotronguy

Cal Weldon · 5th July 2007, 08:42 PM

I am surprised it bent rather than cracked or broke. Aluminum that old tends to get rather brittle. Perhaps pull the cone/VC assembly before attempting or even take it to someone that can offer advice. Got a pic?

EDIT: Cyclotronguy was posting while I was typing.

mpmarino · 5th July 2007, 08:52 PM

How about one of those outfits that straightens aluminum auto rims?

tom1356 · 5th July 2007, 09:08 PM

I think it might be magnesium.
Sorry about the picture but I had to crop it to get it's size down.

tom1356 · 5th July 2007, 09:15 PM

another

tom1356 · 5th July 2007, 09:21 PM

I have tried the rim repair guys but none of them want to try it.

5th July 2007, 04:53 PM	#1
tom1356 diyAudio Member Join Date: Mar 2002 Location: boston	bending cast driver baskets Has anyone had success in bending back a damaged cast driver basket? I have a driver that was damaged in shipping. Is there a right way to attempt a repair? __________________ My "cult-like" following is accepting applications.

5th July 2007, 05:12 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Just send it back. Even if you could bend it, you probably wouldn't get it right all over, and later down the line it might just all crack anyway. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

5th July 2007, 06:39 PM	#4
tom1356 diyAudio Member Join Date: Mar 2002 Location: boston	It's a 1947 Tannoy Monitor Black. The insurance may reimburse me but, I need to save it either way. __________________ My "cult-like" following is accepting applications.

5th July 2007, 08:42 PM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	I am surprised it bent rather than cracked or broke. Aluminum that old tends to get rather brittle. Perhaps pull the cone/VC assembly before attempting or even take it to someone that can offer advice. Got a pic? EDIT: Cyclotronguy was posting while I was typing. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

5th July 2007, 08:52 PM	#7
mpmarino diyAudio Member Join Date: Jun 2004 Location: Crunchville, where I don't fit in.	How about one of those outfits that straightens aluminum auto rims? __________________ Crazy Yankee.


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5th July 2007, 05:17 PM	#3
freddi diyAudio Member Join Date: Aug 2005	I just busted a quarter section out of an expensive coax by knocking down when grid power was out - seems like impact would "work harden" the bent area making efforts to straighten dubious/futile

5th July 2007, 08:41 PM	#5
cyclotronguy diyAudio Member Join Date: Sep 2001 Location: Northern California	Tom, Depends upon how bent and where bent... and more to the point how determined you are to repair. IF it's damaged to the point where you have nothing to lose... then your options are unlimited. Lets look at worst case and perhaps silly scenario; take it all apart... cut, fixture the pieces and tig weld the frame back together.... re-machine as required. Heck, I know guys that rescued an airplane which had crashed and lay forgotten for 50+ years in the jungles of Borneo. After that a speaker basket seems kinda easy. Much is possible if you are willing to throw caution to the wind... and you can find someone who wants a task more for the thrill than the money. Cyclotronguy

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