Graflex RH12 roll film holder has a frame spacing problem

George Hart

Member
Joined
Sep 26, 2002
Messages
45
Location
Chester, UK
Format
Medium Format
The Singer Graflex RH12 holder that I have looks in good shape but the spacing between frames on the roll is not even. Occasionally there is no gap between the frames, or even slight overlap.

I have had it serviced by Newton Ellis & Co in Liverpool but unfortunately the problem remains. Any suggestions as to how to overcome this? If anyone has a graphic displaying the workings of the film holder, that would be a help.

Many thanks,

George
 

Ian Grant

Subscriber
Joined
Aug 2, 2004
Messages
23,271
Location
West Midland
Format
Multi Format
George, I have a pair of RH10 film holders one has very erratic spacing, the other's fine. When I get time I'll open both up to compare and see where the issue lies, they are the same age and type. It's rather frustrating that the repair manual isn't easily accessible, there's 3 on Ebay but postage to the UK is rather high.

Ian
 

shutterfinger

Member
Joined
Feb 25, 2013
Messages
5,020
Location
San Jose, Ca.
Format
4x5 Format
That diagram is for the RH20, the difference between the RH8, RH10, RH20 is the cam, index 22. The cam in conjunction with index 27, lever index-lock determines the wind. Adding .010 to .020 inch diameter to the take up roller causes the film to move further when advanced which increases the space between frames by 1 to 1.5 millimeters.
I have the service manual complete in pdf for about the same price as ebay via paypal if interested.
 
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