8mm Forum: sankyo stereo 800/gate assembly.

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Topic: sankyo stereo 800/gate assembly.

Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted July 13, 2006 06:40 PM

hi there,after putting a new gate assembly into my sankyo800
i now have come across another problem.
the lower loop doesn't form correctly;that leads to the film
jumping in the gate.
does any other member know how to over come this?.
please help!i am at a loss on how to proceed.andy.

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Jan Bister
Darth 8mm

Posts: 2629
From: Ohio, USA
Registered: Jan 2005

posted July 13, 2006 11:53 PM

Hmmmmmmm.

Did you have a previous problem with your Sankyo 800 that you were attempting to fix by replacing the gate assembly? What did you replace exactly, how, and why?

Does pushing the thread/loop restore button do anything at all (with the film already threaded and running)?

--------------------
Call me Phoenix. *dusts off the ashes*

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted July 14, 2006 03:22 AM

hello jan,yes youre correct.i have had trouble with the 800s
gate before.i replaced the gate assembly because ALL films were
jumping in the gate.
the reason i replaced the whole thing is for that reason.
the plate;thats the one with the frame cut in it,for the light to pass;that was very loose indeed.
most films contiue to loose the lower loop
even after pressing the thread lever down.
the sankyo was checked last year by an expert who gave
it a clean bill of health,after checking the claw
cam etc.cheers andy.

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted July 14, 2006 03:56 AM

I think Jan will agree that this sort of problem is caused by one of a few things. Insufficient Gate pressure, Insufficient Claw Protrusion or even an out of aligned gate assay with over or under pressure at the gate edges.

This is where you really need a service manual so all these points can be chaecked. I have heard that wear on the gate pressure plate can cause these porblems. Removal and a good polish may help.

Kev.

--------------------
GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted July 14, 2006 04:24 AM

thanks kev.i'll give them a try.what is recommend for polishing
said gate.andy.

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Jan Bister
Darth 8mm

Posts: 2629
From: Ohio, USA
Registered: Jan 2005

posted July 14, 2006 07:13 AM

* agrees with Kevin *

[Smile]

--------------------
Call me Phoenix. *dusts off the ashes*

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Craig Hamilton
Jedi Master Film Handler

Posts: 501
From: Luton
Registered: Sep 2004

posted July 14, 2006 10:13 AM

Andrew, I had the same problem with my Sankyo 700. It was the gate pressure that needed adjustment. Over the years the pressure springs had become slightly week & required a little stretching.

Craig

--------------------
I dream of becoming a dealer!!!!!!
Is Perry's Movies for Sale.

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted July 14, 2006 03:49 PM

I think Craig is probably spot on with that diagnosis so try that first. I use TCUT to remove any burrs or rough patches and then just buff that stuff up.

Kev.

--------------------
GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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Jan Bister
Darth 8mm

Posts: 2629
From: Ohio, USA
Registered: Jan 2005

posted July 15, 2006 08:16 AM

* agrees with Craig *

--------------------
Call me Phoenix. *dusts off the ashes*

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted July 17, 2006 02:32 AM

Hmmmm;now the damm thing is out of focus?.andy.
i think the screws are too tight?.

[ July 17, 2006, 03:59 AM: Message edited by: Andrew Wilson ]

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Craig Hamilton
Jedi Master Film Handler

Posts: 501
From: Luton
Registered: Sep 2004

posted July 17, 2006 06:06 AM

Andrew

When you say out of focus, do you mean the complete image or just one half of the screen?

If it is the latter, make sure the pressure plate is fitting flush with the gate. A little press with your finger may click it in to position.

Craig

--------------------
I dream of becoming a dealer!!!!!!
Is Perry's Movies for Sale.

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted July 17, 2006 08:02 AM

half of it is out of focus.andy.

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Craig Hamilton
Jedi Master Film Handler

Posts: 501
From: Luton
Registered: Sep 2004

posted July 17, 2006 02:41 PM

OK Andy, look to make sure that the pressure plate is sitting flush. Try pressing the top & bottom of the plate it will probably click in to place.

Failing that, visually check that it is sitting evenly top & bottom.

Craig

--------------------
I dream of becoming a dealer!!!!!!
Is Perry's Movies for Sale.

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted July 18, 2006 07:58 AM

Almost there craig;not quite.andy.

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