This is topic Erno RE-904 repair question in forum 8mm Forum at 8mm Forum.

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Posted by Sven Zijlemaker (Member # 2282) on February 22, 2014, 01:27 PM:

Yesterday I have received a Erno RE-904, but when testing I found out that the film blocked. Today I screwed the Erno open where I found the problem, a broken clockwheel as can be seen in the picture below:


My question is, can I repair this with super glue or is there an easy way to find a replacement?

Sven Zijlemaker
Posted by Luigi Castellitto (Member # 3759) on October 25, 2017, 05:06 PM:
I have the same problem, it's a factory default of these editors, even of the equivalent Goko RM-8008.
Does anyone know how to solve it? Do you have or know where I can find a replacement?

Thank you. [Smile]
Posted by frank arnstein (Member # 330) on October 27, 2017, 08:29 PM:
Hi Luigi

Why not contact Edwin van Eck to discuss making this part for you.
I am sure he could print this out with his amazing 3d printing technology.
Here is his internet site address.

dogtor frankarnstein


[ October 28, 2017, 01:14 AM: Message edited by: frank arnstein ]
Posted by Luigi Castellitto (Member # 3759) on October 28, 2017, 11:55 AM:
Thanks Frank, I've already tried to contact Edwin a few days ago. He still does't answer me, probably busy time.
I had just shown this thread to him, hopefully we can fix it!
Posted by Luigi Castellitto (Member # 3759) on October 30, 2017, 05:26 PM:
I went to a 3d print shop in my town.
He told me that the sprocket is too small for the technology that he have. [Frown]
Posted by Edwin van Eck (Member # 4690) on November 13, 2017, 03:16 PM:
Hi, sorry for the late reply. It is quite busy know. Today whole day filming with super8 film our our premises (promo film), see:

I will look into this soon. Looking at the picture, it might be a bit small for 3D printing, but progress in accuracy in 3D-printing is going fast now. Let you know soon!
Posted by Luigi Castellitto (Member # 3759) on November 13, 2017, 03:26 PM:
Yes, Edwin, so you can be busy, don't worry.
In the meantime I resolved, "unfortunately" by buying another this model of Erno in spare parts state (30 euro [Smile] ), from which I took the whole optical group.

But we keep in mind that piece, with the advancement of tehcnology of 3D printers: it's broken into 70% of the Erno/Goko of that existing model, it was a real factory defect. Hopefully, it does not happen to my new optical group too!
Thank you! [Smile]

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