This is topic Wanted: Control Knob for Eumig S810D in forum 8mm equipment for sale/trade at 8mm Forum.
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Posted by William Olson (Member # 2083) on September 06, 2013, 11:52 AM:
The control knob on my Eumig S810D just broke. Can anyone help me find a replacement?
Posted by Martin Jones (Member # 1163) on September 06, 2013, 01:28 PM:
See this thread for ideas...
http://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=1;t=008501
Posted by William Olson (Member # 2083) on September 08, 2013, 11:30 AM:
Thanks. I think my control knob is beyond repair. The part that fits onto the shaft broke into 2 pieces.
Posted by Mike McCord (Member # 3767) on September 09, 2013, 07:16 AM:
William:
Not true. Using the 2 part plastic repair pare products mentioned in the above referenced thread, I have repaired knobs - even when one of the broken side shaft pieces was missing. Mix this stuff up, and it becomes like putty or clay, and can be molded to make the knob shaft whole. Use something to keep your shaft hole open (slightly smaller than your shaft) then, align the knob and press it onto shaft. Better instructions are on the bottle...
You just might have to do this in two or more steps. Make the knob shaft whole with an insert slightly larger than the shaft. Then, when dry (8 hrs) mix some more and place in the shaft hole and insert knob on shaft - with proper alignment.
Never give up!!
Posted by William Olson (Member # 2083) on September 09, 2013, 08:25 AM:
Mike:
thanks for assuring me that this method will work.
Posted by Mark L Barton (Member # 1512) on September 09, 2013, 09:43 AM:
Theres one for sale on Ebay uk , its just been listed.
http://www.ebay.co.uk/itm/EUMIG-807-or-810-super-8-sound-projector-spares-collection-Control-knob-gates-/271273779077?pt=UK_Photography_Film_Projectors&hash=item3f292d5f85
Posted by William Olson (Member # 2083) on September 09, 2013, 10:37 AM:
Thanks Mark
Posted by Edwin van Eck (Member # 4690) on March 03, 2015, 12:13 PM:
We produce the main cotrol knobs for the Eumig S810D (and all others in this series).
The design is an improved design compared with the original buttons. These buttons fit now on all models in the Eumig 800 series.
See:
http://shop.van-eck.net/PP-0011.html?_globalsearch=pp-0011
Posted by frank arnstein (Member # 330) on March 08, 2015, 01:04 AM:
Hi Edwin
If this knob works Ok then could you look into making a main control knob for Elmo ST 1200?
The same knob fits some of the lessor Elmos like St-800, GS-800, St-600 etc.
These knobs work hard and they get loose on the shaft. They rock around and come off and eventually break up.
When this happens, we cannot get these knobs anywhere unless off another Elmo, so it should be on the development list. It will be in demand world wide.
Has anyone else had a problem with these Elmo Control Knobs?
dogtor ![[Smile]](smile.gif)
![[Wink]](wink.gif)
Posted by Andrew Woodcock (Member # 3260) on March 08, 2015, 11:23 AM:
I gotta say Frank,I have had 5 ST1200's over the years but never had any issues with the main control knob on any of them.
Plenty of faults and flaws elsewhere I hasten to add, but never any issues with this part. Maybe I have just been lucky in this respect.
Posted by frank arnstein (Member # 330) on March 09, 2015, 02:11 AM:
Hi Andrew,
I am a bit surprised at what you say about the life expectancy of Elmo St 1200 knobs in the UK.
Here in Australia these knobs do not seem to stand up to the extremes of the climate. It seems like the plastic knob cracks and the weird steel spring clip on it gets stretched and is too loose.
I have had at least 3 selector knob breakages occurring on my Super 8 Elmos in the past 3 years. I know because I have the broken knobs and the offending Elmo projectors still here. They have now became spare-parts machines for me.
One is an old Elmo St 1200HD and its knob has already been taken to repair another ST 1200 that came in with a loose and broken knob.
Then there is an Elmo ST-800 and an Elmo ST-600. Both all black machines. Both still have their knobs and both knobs are broken and loose. I could not repair them no matter what I tried.
With Dougs help, I will post a picture here of these 2 broken knobs so you can see how flimsily they are made. If you have an Elmo from this series it would be wise to get a spare selector knob when the opportunity arises and treat them gently till then.
I have no doubt that these knobs have a habit of breaking in Australia and I would buy some spare knobs if I could.
dogtor
Posted by Edwin van Eck (Member # 4690) on March 09, 2015, 03:12 AM:
Yes, please post some pictures of these broken knobs and for which projectors these are suited. I need to know what the weak spot is, so we can take this in consideration for the design.
I will add this to our design list!
Posted by frank arnstein (Member # 330) on March 10, 2015, 09:21 PM:
Hi to those that doubt if Elmo knobs are weak.,
Here are a couple of pics that Doug is going to post for me.
See what the Elmo knobs are really like.
I hope Edwin decides to go ahead on this one.
dogtor
[ March 11, 2015, 07:39 AM: Message edited by: Douglas Meltzer ]
Posted by Edwin van Eck (Member # 4690) on March 11, 2015, 12:26 PM:
Thx for the pictures. It is on my project list!
Posted by Andrew Woodcock (Member # 3260) on March 11, 2015, 02:15 PM:
It appears to me Frank and Edwin, that the whole arrangement would benefit by those hollow sections on the ends of the knob being made solid. Then the shoulders of the inner parts would be better supported I guess and stop the well used shoulders splitting and coming apart from all of the torque stresses whilst turning.
Looking at this Frank, I must have been extremely lucky with all five I've had or perhaps not quite as heavy handed maybe.
Maybe this fits in with Jons Elmo conspiracy theory on early retiring Elmo service Engineers from the sheer number of jobs and spare parts sold! Ha Ha
Posted by frank arnstein (Member # 330) on March 11, 2015, 07:37 PM:
I agree Andrew, if the hollows in the knob can be made solid then it would be a substantially stronger knob.
Heavy handed operators could well be the main cause of many cracked knobs. You are obviously gentle on your machines and so its not all due to good luck.
dogtor
Posted by Andrew Woodcock (Member # 3260) on March 12, 2015, 04:50 AM:
Hopefully Frank, Edwin will make his replica of this from solid nylon then.
It must have something to do with climate though Frank if this is something you see a lot of down under. I would be interested to know if anyone here in the UK has experienced this on more than one occasion.
Posted by Edwin van Eck (Member # 4690) on May 01, 2015, 04:57 AM:
We have started the design for this knob. Hope to have a first version ready in a couple of weeks!
Posted by Edwin van Eck (Member # 4690) on June 03, 2015, 10:46 AM:
Hello, your wish is my command :-)
Elmo ST-600, GS-800, ST-1200 main control knob
New improved version made of solid nylon.
With specially designed flexible coupling clamp for secure clamping to the shaft.
See: http://shop.van-eck.net/PP-0090.html?_globalsearch=pp-0090
[ June 04, 2015, 09:46 AM: Message edited by: Edwin van Eck ]
Posted by Joel Whybrow (Member # 1377) on June 04, 2015, 09:33 AM:
Fantastic work, it's great to see someone producing these hard to find parts for the community
Do you have plans at all to reproduce the plastic greebly for the ST1200 focus knob? It has a square end that the outer knob attaches to which is part of the shaft that moves the lens but on mine (and from the looks of how delicate it is maybe others) it's snapped clean off. I shoved a screw in there for the moment but it's a bit hokey to say the least!
Posted by Edwin van Eck (Member # 4690) on June 04, 2015, 09:41 AM:
no plan yet for this part. But my intention is to produce any part where there is demand for.
I put it on my list. If someone else need this as well, please reply, so that it becomes higher on the priority list!
Posted by frank arnstein (Member # 330) on June 24, 2015, 05:37 AM:
Edwin, this is great news.
Congratulations on making this hard to get knob for Elmo owners all around the world. I will be ordering this and other parts soon.
dogtor frankarnstein
Posted by Edwin van Eck (Member # 4690) on August 05, 2015, 02:57 AM:
Hi Joel,
The Greebly (spiral part) of the Elmo ST-1200 (among others) is now ready!
See: http://shop.van-eck.net/?_globalsearch=pp-0092
Elmo ST-600, ST-800, GS-800, ST-1200, GS-1200, spiral part for the focus knob - PP-0092
New improved version made of solid nylon.
Fits on the following projectors:
- Elmo GS-800
- Elmo SC-18
- Elmo ST-160
- Elmo ST-180
- Elmo ST-600
- Elmo ST-800
- Elmo ST-1200
Color: white
Weight: 1 grams
Size: diameter: 15mm, lenght: 18mm
Design by Van Eck
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