This is topic Brenkert Sprocket retainer broken in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Sam Hunter (Member # 1119) on 11-09-2002, 06:17 PM:
I swear, I just cant get ahead these days.
The plate on my intermittant Sprocket apparently was not properly tightend and just tore itself apart. (see Photo)
I checked for binding between the film shoe and sprocket and found nothing there as well as the amount of tension on the film in the gate. I dont know what the hell anymore.
Anyway I am dead in the water now.
Does anybody have something I can replace this with? I would be willing to overnight it if possible.
Thanks!
------------------
Samual Hunter Sr.
KC5ZSL
Posted by Ken Layton (Member # 133) on 11-09-2002, 06:38 PM:
That should be a common part you could obtain from Sonic Equipment (www.sonicequipment.com)
Posted by Sam Hunter (Member # 1119) on 11-09-2002, 06:39 PM:
Out of curiosity what would a whole new sprocket run me?------------------
Samual Hunter Sr.
KC5ZSL
Posted by Ken Layton (Member # 133) on 11-09-2002, 07:49 PM:
New projector sprockets usually cost in the $100 range depending on brand and type.
Posted by Paul G. Thompson (Member # 655) on 11-09-2002, 08:08 PM:
Yeah - that thing is known by some Brenkert nuts as a "Hoop-De-Doo" and it was named that by my friend Jim Bonholzer who had a ton of Brenkerts in all his drive-in theatres here in Washington State.I might have one laying around in my junk. I'll check tomorrow.
By the way, (I am sure you know by now) the screw on the end of the intermittant sprocket is a left-handed thread.
Incidently, that part is sold separately. (Used to be, anyway...)
Posted by Sam Hunter (Member # 1119) on 11-09-2002, 11:44 PM:
Well, I constructed a temporary one from a small precision ruler I had and it seems to be holding up. I will use this till I can get a replacement.
Heres the pic of my masterpiece.
------------------
Samual Hunter Sr.
KC5ZSL
Posted by Paul G. Thompson (Member # 655) on 11-10-2002, 12:26 AM:
Good job, Sam. 
Hey, I have a sprocket with the "Hoop-De-Doo" on it. Send me some cordinates, and I'll mail it to you Monday. Merry Christmas.
By the way, I could not help but notice the film stripper is sprung. I would highly recommend that you tuck it in between the sprocket centers so the film does not beat on it. If the film is allowed to beat on it, you'll have horizontal scratches up the gazoo.
Either that, or just take the damn thing off and order a new one if they can be found.
PS...By looking at that picture, I can see why you didn't have much trouble laying and setting up the shutter shaft bracket. A complement to you..you must be a top-notched machinist and mechanic.
Posted by Sam Hunter (Member # 1119) on 11-10-2002, 10:37 AM:
Thanks Much for the compliment Paul.
All acomplished using a drill press and Dremel.
Thanks for noticing that stripper problem too.
IS the stripper supposed to curve around the sprocket and be more centered? ANy photos of one in the correct position, as I feel certain I can get it back right if I knew what it was supposed to look like.
Thanks!Paul,
I will email you my address.
Thanks!
------------------
Samual Hunter Sr.
KC5ZSL
Posted by Paul G. Thompson (Member # 655) on 11-10-2002, 02:07 PM:
Yes, it should be centered. Also, curve it enough so there is no way the film can slap the stripper. The closer you can get the end of the stripper as close to the sprocket center without making contact with the sprocket, the better off you will be. If the curvature of the stripper protrudes from the lower portion of the sprocket, film damage could result.Although my artwork leaves much to be desired, make it look something similar to this:
Actually, this side-by-side comparison might make more sense.
