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Yuichi A290 CAD plans
Yuichi A290 CAD plans
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Old 18th July 2019, 04:09 AM   #41
Joseph Crowe is offline Joseph Crowe  Canada
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Join Date: Mar 2012
Location: Picton Ontario
Quote:
Originally Posted by daemonsgr View Post
if you want to build an 290 (not S, but the question is generic) for a 1.4in driver (like 4594nd) how would you design the end bit (throat etc)? Is it ok?
A smaller throat does present an opportunity to improve the transition between the compression driver’s own exit angle and the 45 degree horizontal throat angle in the A290.
The Radian 850PB for example has a wide 16 degree exit angle, so the transition should be made as smooth as possible. To this end I do offer throat adapters with very complex internal geometry to reduce the effects of the abrupt physical change in the flare geometry in the throat. To machine the adapter requires a two piece assembly so that I can approach it with my CNC machine’s ball nose cutter.

For DIY I can share the design or solid model, just email me at Joseph_crowe(at symbol)Josephcrowe.com

Thanks
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Old 10th August 2019, 12:15 PM   #42
manudrz is offline manudrz  France
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Location: Fougères
Hi guys, so, is anyone sharing his CAD files for it
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Old 10th August 2019, 01:03 PM   #43
daemonsgr is offline daemonsgr  United Kingdom
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Join Date: Jun 2014
Location: London (UK) / sometimes Greece
Quote:
Originally Posted by manudrz View Post
Hi guys, so, is anyone sharing his CAD files for it
from what I understood there is no freely available CAD.
Ill make one myself. If you end up making one first please let me know
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Old 10th August 2019, 03:03 PM   #44
manudrz is offline manudrz  France
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Join Date: Feb 2012
Location: Fougères
I'm just starting thinking about it, so in 1 or 2 years perhaps
Otherwise, I found a link to an archive on a french forum, thanks to his member for pointing this:
Wood Horn
I didn't know it has been "saved"

Last edited by manudrz; 10th August 2019 at 03:05 PM.
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Old 10th August 2019, 03:40 PM   #45
daemonsgr is offline daemonsgr  United Kingdom
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Join Date: Jun 2014
Location: London (UK) / sometimes Greece
Quote:
Originally Posted by manudrz View Post
I'm just starting thinking about it, so in 1 or 2 years perhaps
Otherwise, I found a link to an archive on a french forum, thanks to his member for pointing this:
Wood Horn
I didn't know it has been "saved"
Sorry I might have misread your post. You said about CAD file.
I have the pdf/2d old drawing and the 'web archived' site.

Did you find the CAD file though?
thanks
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Old 10th August 2019, 04:05 PM   #46
manudrz is offline manudrz  France
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No, you didn't misread, but anything is good to take. No CAD files sorry...
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Old 13th August 2019, 04:12 AM   #47
atilsley is offline atilsley  Australia
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My CAD files are made 2D, but the incremental steps for the main curve are 1mm, making the finishing/sanding easier.
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Old 13th August 2019, 07:08 AM   #48
daemonsgr is offline daemonsgr  United Kingdom
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Location: London (UK) / sometimes Greece
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Originally Posted by atilsley View Post
My CAD files are made 2D, but the incremental steps for the main curve are 1mm, making the finishing/sanding easier.
Can you share?
Thanks
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Old 13th August 2019, 11:12 PM   #49
mp9 is offline mp9  United States
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^ +1 on that request. TY
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Old 14th August 2019, 01:21 AM   #50
atilsley is offline atilsley  Australia
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Quote:
Originally Posted by daemonsgr View Post
Can you share?
Thanks
I can, but it's commercial with small $ attached. Please PM me as such. Kind regards.
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