This is topic B&H 1575A Lower Sprocket Skips Gear Teeth in forum 16mm Forum at 8mm Forum.
To visit this topic, use this URL:
https://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=5;t=001761
Posted by Steve Kraus (Member # 6244) on February 12, 2018, 02:08 PM:
I may have already found the answer online but I would like to get some verification.
I picked up this slot loader at a hamfest. There are issues with the lower sprocket which seems to be skipping some teeth but the way this machine is built, much of the mechanism is on a sub plate. The lower big gear driven by the white worm does not drive the lower sprocket directly. I can't seem to understand how one gets access to that area to even see what is going on.
So question number one: How does that come apart?
As I said I may have answered the question of what is going on thanks to an eBay ad by Larry Urbanski which states:
If the bottom loop on your B&H Slotload gets bigger and bigger when you are projecting a film, this gear is cracked and needs replacing. This part is the drive gear for the bottom sprocket. Replacement requires special tools (bristol wrenches)...
I would like to disassemble that area to see what's going on as sometimes it seems to hold solidly. But if it is as Larry's ad for a lower sprocket gear ($35) suggests, then I think the projector is toast as I don't want to put money and a huge amount of effort into a projector that I only have maybe $15 in.
Which leads to the question number two: What should I save when I junk this? I do have a couple of old turquoise machines with tube amps. I might want to make use of the 1575A's amp even if it has to be outboarded.
Posted by Maurice Leakey (Member # 916) on February 12, 2018, 02:51 PM:
Steve
You may be interested in this problem reported recently on the Forum.
http://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=5;t=001742#000007
Posted by Steve Kraus (Member # 6244) on February 12, 2018, 05:22 PM:
Thank you. I had been searching by my model number.
Visit www.film-tech.com for free equipment manual downloads. Copyright 2003-2019 Film-Tech Cinema Systems LLC
UBB.classicTM
6.3.1.2