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Equipment Discussions >> Mounts

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Polaris41N
member


Reged: 02/08/13

Loc: Eastern PA
iEQ45 gear upgrade?
      #5847494 - 05/08/13 10:32 AM

Does anyone know of a worm gear upgrade for the iOptron iEQ45?

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rkayakr
sage
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Reged: 10/27/10

Loc: Northeast Ohio
Re: iEQ45 gear upgrade? new [Re: Polaris41N]
      #5847703 - 05/08/13 12:44 PM

Aeroquest will make one. One was sold in the classifieds last December by a member who said that they were $112 new. Also - there is a post on the ieq45 imaging Yahoo group (message 2216) that quotes iOptron tech support as saying that iOptron will sell upgraded worms for $100 + $10 shipping and handling.

Bob

Edited by rkayakr (05/08/13 02:55 PM)


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Wembley2000
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Reged: 01/07/12

Loc: SW Ohio
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #5847727 - 05/08/13 12:59 PM

I had the aeroquest worm and the upgraded ioptron worm. Go for the upgraded ioptron one if you are going to do it. The ioptron worm was smoother than the aeroquest and was I think lower in pe if I remember correctly.

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Astronewb
Pooh-Bah
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Reged: 09/19/11

Loc: Connecticut
Re: iEQ45 gear upgrade? new [Re: Wembley2000]
      #5847833 - 05/08/13 01:58 PM

Quote:

I had the aeroquest worm and the upgraded ioptron worm. Go for the upgraded ioptron one if you are going to do it. The ioptron worm was smoother than the aeroquest and was I think lower in pe if I remember correctly.




Ditto...! iOptron has indicated in an email to me, that the updated worms will be available sometime in June.

Fwiw,

Paul


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kyang
member
*****

Reged: 12/09/12

Loc: Fremont, CA
Re: iEQ45 gear upgrade? new [Re: Astronewb]
      #5847959 - 05/08/13 03:01 PM

Will iOptron offer upgraded worms for iEQ30 ?

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: Astronewb]
      #5848055 - 05/08/13 03:46 PM

I plan on getting one once they are available.

Thanks for the info

Timm


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Polaris41N
member


Reged: 02/08/13

Loc: Eastern PA
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #5848621 - 05/08/13 08:19 PM

Thanks to all of you for your answers. I talked to Kevin at iOptron earlier this afternoon and he did indeed say he was waiting on some parts to put the worm upgrade kits together. He indicated they would post availability on their web site when the kits are ready.

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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: Polaris41N]
      #5944408 - 06/28/13 08:52 AM

Hello from Greece!
I contacted with Kevin too a month ago and had the same answer. I sent him an email again yesterday for an update and he informed me that they have been furnishing and testing better pulleys and belt so there will be another month of delay. Thats cool by me though the better the kit the more we benefit all


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Stew57
Carpal Tunnel
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Reged: 05/03/09

Loc: Silsbee Texas
Re: iEQ45 gear upgrade? new [Re: Astronewb]
      #5945252 - 06/28/13 05:34 PM

Paul

What is the raw PE of your mount again? Seems it was astonishingly low and an "upgrade" gear set may be a disappointment.


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dvb
different Syndrome.
*****

Reged: 06/18/05

Loc: Vancouver, Canada
Re: iEQ45 gear upgrade? new [Re: Stew57]
      #5945499 - 06/28/13 08:03 PM

Is the upgraded gear easy to install?

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Goodchild
scholastic sledgehammer
*****

Reged: 12/31/08

Re: iEQ45 gear upgrade? new [Re: dvb]
      #5945641 - 06/28/13 09:39 PM

Are new IEQ45's coming with the upgraded gear?

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chboss
professor emeritus


Reged: 03/24/08

Loc: Zurich Switzerland
Re: iEQ45 gear upgrade? new [Re: Goodchild]
      #5945937 - 06/29/13 02:46 AM

Following this interested... looking forward to more details.

regards
Chris


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Astronewb
Pooh-Bah
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Reged: 09/19/11

Loc: Connecticut
Re: iEQ45 gear upgrade? new [Re: Stew57]
      #5946263 - 06/29/13 10:16 AM

Quote:

Paul

What is the raw PE of your mount again? Seems it was astonishingly low and an "upgrade" gear set may be a disappointment.




Hi Stew, the raw PE on my iEQ45/8407 was about 32 arc secs peak to peak, if I remember correctly.

Early on I installed a Telescope Drive Master, which put an end to any PE concerns I may have had.

Regarding the info from iOptron about pulleys and belts in addition to the updated worm, if they go to the 28 tooth pulley and belt currently used on the ZEQ25 mount, it should transform the iEQ45.

The pulley and belt are very fine when compared to the iEQ45 and should immediately smooth out any PE graph.

It will be interesting to see what they finally offer to consumers.

Clear skies,

Paul


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Astronewb
Pooh-Bah
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Reged: 09/19/11

Loc: Connecticut
Re: iEQ45 gear upgrade? new [Re: dvb]
      #5946269 - 06/29/13 10:21 AM

Quote:

Is the upgraded gear easy to install?




Replacing the worm on a iEQ45 requires disassembly of the RA gear housing and just basic mechanical skills.

Any kit would hopefully have installation instructions, and I'm pretty sure there are probably some on the Yahoo Group iOptron Imaging forum.

Cheers,

Paul


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: Astronewb]
      #5949179 - 07/01/13 07:12 AM

I found about a month ago (dont remember where from) a pdf manual beautifully instructing how to clean or replace RA gear. Had to split the file because was 400kb

Edited by bilgebay (07/01/13 03:26 PM)


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: Astronewb]
      #5949181 - 07/01/13 07:12 AM

page 3

Edited by bilgebay (07/01/13 03:26 PM)


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: Astronewb]
      #5949182 - 07/01/13 07:13 AM

and the last 3 pages. Enjoy

Edited by bilgebay (07/01/13 03:27 PM)


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Bill McNeal
sage


Reged: 10/07/07

Re: iEQ45 gear upgrade? new [Re: Astroeksarheio]
      #5983332 - 07/21/13 05:20 PM

Are units sold today shipping with the upgrade? Also any word on a ZEQ45 model?

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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: Bill McNeal]
      #5999674 - 07/31/13 08:39 AM

Last day of the month but no news from ioptron bout the worm,belt and pulley upgrade. Hope they soon put the package up for sale. I wouldnt like to see a new zeq45 being released before that especially now that i recently bought the ieq45(without the upgrades)

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rkayakr
sage
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Reged: 10/27/10

Loc: Northeast Ohio
Re: iEQ45 gear upgrade? new [Re: Astroeksarheio]
      #6001249 - 08/01/13 10:09 AM

I believe that you have to ask tech support. I did and they asked for a pix of my worm to see if I could use the upgrade. I had a problem at the first step in getting the invisible 1.5 mm allen head set screws out of the pulleys. I sent a pix of the pulleys and they responded that the pix was enough to say that I can use the upgrade. However, they were discouraging about the upgrade and suggested that I try to change the relative position of the RA worm and motor shaft or reassemble the RA driving train first.

To do any of those I need to get the @#$^#@# set screws out. If I ever do, I would just as soon put the better parts in as disassemble and reassemble repeatedly.

Bob


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6070089 - 09/08/13 07:02 PM

https://www.ioptron.com/index.cfm?select=productdetails&phid=c5f7604d-c97...

Mine is arriving tomorrow!


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Astronewb
Pooh-Bah
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Reged: 09/19/11

Loc: Connecticut
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6071056 - 09/09/13 11:12 AM

Quote:

To do any of those I need to get the @#$^#@# set screws out. If I ever do, I would just as soon put the better parts in as disassemble and reassemble repeatedly.




Hi Bob, the set screws in the pulleys are 1.5mm allen type.

I found it best to grind off the short arm a bit to give increased room between the two pulleys. Hint: if you pull the housing up to disengage the worm, you can turn the pulleys with your fingers to allow access to the set screws, or simply power up the mount and slew in RA to access the screws.

I did a test of the new worm, and also the new style pulleys. The new pulleys did not perform as expected.

I also modified a set of Z pulleys (fine pitch) and installed them, they worked great.

Details can be found in this Flickr set, with annotations:

http://www.flickr.com/photos/astronewb2011/sets/72157635275957079/

Hope the info helps,

Paul

Edited by Astronewb (09/09/13 11:15 AM)


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rkayakr
sage
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Reged: 10/27/10

Loc: Northeast Ohio
Re: iEQ45 gear upgrade? new [Re: Astronewb]
      #6072013 - 09/09/13 08:07 PM

Paul

Thanks - A ball ended hex key did the trick for me.

I received the iOptron upgrade kit today. It contained a new worm, 2 bearings, a new pulley, a new encoder, a few bits of fastening hardware and, of course, no instructions. I have the December 2011 RA Worm Gear Cleaning instruction pdf and will use that as a guide unless someone has something more relevant.
Since a single pulley is provided I assume that there is no change to the belt/pulley system so that I will have the old style belt/pulleys.

I got a new puppy! Ursa Minor is a 10 week old female Golden Retriever. She should be a big help in the mount disassembly process, as long as she doesn't eat anything too important.

Bob


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6073840 - 09/10/13 08:10 PM

I's still testing mine, but I confirmed off line with Paul that mine is performing much better than my original worm gear.

Timm

And congrats on the new puppy!


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6074441 - 09/11/13 06:22 AM

So the mix that would make our nights easier consists of ioptron's worm, Paul's belt/pulleys, better bearings and some cleaning/new grease maybe(superlube or else) ?

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: Astroeksarheio]
      #6075165 - 09/11/13 01:57 PM

Quote:

So the mix that would make our nights easier consists of ioptron's worm, Paul's belt/pulleys, better bearings and some cleaning/new grease maybe(superlube or else) ?




I have the new worm, and regreased it with SuperLube, and the new gear uses new bearings and one new pulley wheel, but the same pulley. So far, I think I'm set once I figure out the optimal PHD guiding settings for my setup. I still want to train the PEC and see how much of a difference it makes, but if one were simply to accept that guiding is always needed, I don't think I would bother with the PEC.

Having gone from around 60 arc sec of PE with some pretty steep ups and downs, to what I now estimate to be something like 6-15 arc sec of PE with a very smooth curve is really quite good in my opinion.

Timm


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6075176 - 09/11/13 02:04 PM

Quote:

Paul

Thanks - A ball ended hex key did the trick for me.

I received the iOptron upgrade kit today. It contained a new worm, 2 bearings, a new pulley, a new encoder, a few bits of fastening hardware and, of course, no instructions. I have the December 2011 RA Worm Gear Cleaning instruction pdf and will use that as a guide unless someone has something more relevant.
Since a single pulley is provided I assume that there is no change to the belt/pulley system so that I will have the old style belt/pulleys.

I got a new puppy! Ursa Minor is a 10 week old female Golden Retriever. She should be a big help in the mount disassembly process, as long as she doesn't eat anything too important.

Bob




If you can take the old one apart, you will be able to put the new one in as a replacement, and your old instructions are still relevant. The worm can only go one way, and the new bearings aren't directional. The new worm has a larger diameter shaft, which I think also helps (just a hunch), and the encoder seems to be unidirectional also.

Timm


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rkayakr
sage
*****

Reged: 10/27/10

Loc: Northeast Ohio
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6075309 - 09/11/13 02:52 PM

Timm
Got it apart and got the update that the bearings are no longer unidirectional. I have reassembled the worm several times but the shaft, although turnable by hand, is not easily turned. I'm going to complete the assembly and measure the current as soon as I acquire a meter that measures over 200 ma.


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6075483 - 09/11/13 04:26 PM

Quote:

Timm
Got it apart and got the update that the bearings are no longer unidirectional. I have reassembled the worm several times but the shaft, although turnable by hand, is not easily turned. I'm going to complete the assembly and measure the current as soon as I acquire a meter that measures over 200 ma.




If you don't mind, can you let me know how you measure the current? Mine isn't easily turned by hand either, but it sounds good when I run it, and I don't honestly know how to measure the current.

Thanks,

Timm


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rkayakr
sage
*****

Reged: 10/27/10

Loc: Northeast Ohio
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6075561 - 09/11/13 05:27 PM

Timm

I got a multimeter that measures current at Radio Shack. You put it inline in the power circuit:

positive source to positive (red) test lead
negative (black) test lead to mount positive power line

mount negative power line to negative source

Mine measures about 0.45 amp, varying from 0.39 to 0.49. The doc suggests less than 0.6 amp is good.

Bob


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Phillip Easton
sage


Reged: 12/24/10

Loc: DFW
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6075935 - 09/11/13 09:48 PM

With what I had to measure the current I turned off the mount, took the mainboard out and put alligator test clamps on the switch connections. This completes the circuit and you can measure the current. I get around 0.45-0.5 amps when I measured mine.

Cheers!
Phillip


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6075962 - 09/11/13 10:03 PM

Quote:

Timm

I got a multimeter that measures current at Radio Shack. You put it inline in the power circuit:

positive source to positive (red) test lead
negative (black) test lead to mount positive power line

mount negative power line to negative source

Mine measures about 0.45 amp, varying from 0.39 to 0.49. The doc suggests less than 0.6 amp is good.

Bob


\

Can you show a picture of what you mean? Sorry I'm so dense on this one.

Timm


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6076510 - 09/12/13 08:24 AM

would like to see a picture of that too. I believe i know how to measure it but i want to confirm it.

btw what do you guys think about koyo bearings for the worm? heard those bearings are of high quality


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rkayakr
sage
*****

Reged: 10/27/10

Loc: Northeast Ohio
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6076581 - 09/12/13 09:15 AM

Timm

Here is a short description:

http://laserpointerforums.com/f51/how-measure-current-42256.html

Where our mount goes in the circuit where the reference shows a light bulb.

Edited by rkayakr (09/12/13 09:19 AM)


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6076987 - 09/12/13 01:15 PM

Thanks! I will see if I can try it on mine.

Timm


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6082803 - 09/15/13 08:54 PM

My latest test results show a significant improvement over the original worm gear.

Timm


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6083232 - 09/16/13 03:06 AM

Grats Timm. Its good to hear from many mouths that its working.
I reassembled mine too (without leaving any screws lol) but I havent measured current yet. Seems to work fine though the "laboring sound" that ioptron mentions in the manual is quite significant.
One thing i noticed with my little knowledge is that the shell/housing that holds the worm and motor is poorly crafted. Could barely make the worm sit right. Dont know if I am the lucky one but thats a part they should have made better.


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rkayakr
sage
*****

Reged: 10/27/10

Loc: Northeast Ohio
Re: iEQ45 gear upgrade? new [Re: Astroeksarheio]
      #6083363 - 09/16/13 07:48 AM

Good news Timm
Haven't been able to test mine yet.
The attachment holes for the worm housing are large so that you can line them up. iOptron mentions a temp-late at the factory, but we get to do it by feel.
I noticed that relieving the load on worm by even the smallest amount makes a huge improvement in how easy it is to turn.


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6084973 - 09/16/13 11:05 PM Attachment (15 downloads)

I'll load my results one JPG page at a time for everyone to see since there doesn't seem to be a way to upload a PDF file...

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6084975 - 09/16/13 11:05 PM Attachment (17 downloads)

Page 2

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6084976 - 09/16/13 11:06 PM Attachment (23 downloads)

Page 3

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6084987 - 09/16/13 11:12 PM Attachment (10 downloads)

Page 4

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6084989 - 09/16/13 11:12 PM Attachment (10 downloads)

Page 5

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6084992 - 09/16/13 11:12 PM Attachment (13 downloads)

Page 6 - Last Page

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whwang
sage


Reged: 03/20/13

Re: iEQ45 gear upgrade? new [Re: timmbottoni]
      #6085108 - 09/17/13 12:26 AM

Hi Tim,

Thank you for the test. Do you know what happens in page2 (PEC off, guide off)? It goes down continuously and there doesn't seem to be any periodic behavior.

Cheers,
Wei-Hao


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chboss
professor emeritus


Reged: 03/24/08

Loc: Zurich Switzerland
Re: iEQ45 gear upgrade? new [Re: whwang]
      #6085302 - 09/17/13 05:42 AM

Hi Tim

Wow what a difference between the original worm and the new one!
The new raw value looks good, but I think with some optimizations you should be able to get even better results while guiding.

My mount was guiding well but I did never measure the raw periodic error.
I was under the impression there were big corrections necessary with the original worm.
I have just received my new worm and will try to install it over the coming weekend. Looking forward to the results.

with best regards
Chris


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: whwang]
      #6085414 - 09/17/13 07:52 AM

Quote:

Hi Tim,

Thank you for the test. Do you know what happens in page2 (PEC off, guide off)? It goes down continuously and there doesn't seem to be any periodic behavior.

Cheers,
Wei-Hao




Hi,

It's only one period of the worm, so I don't know exactly but when I tested prior to this, it would come back up and follow the same basic cycle.

Timm


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: rkayakr]
      #6087276 - 09/18/13 02:32 AM

Thanks to all for your inputs you guys. Awesome results Timm!

Quote:


I noticed that relieving the load on worm by even the smallest amount makes a huge improvement in how easy it is to turn.



I second that. I believe that the perfect spot to tighten the worm up is right before it starts to play right and left. At that point(at least for me) its moving like its totally free especially with the koyo bearings i put on.

The bearigns of the kit seemed *BLEEP* to me. I hold them in my hands and twisted them. They turned like two or three times where the koyo turned eight times.

Cant wait to take my mount back to its pier to start testing too.


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orlyandico
Postmaster
*****

Reged: 08/10/09

Loc: Singapore
Re: iEQ45 gear upgrade? new [Re: Astroeksarheio]
      #6087330 - 09/18/13 04:26 AM

looks like the PEC is pretty darn useless.

unless my eyes are deceiving me, having PEC off while guiding is better than having PEC on while guiding.


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: iEQ45 gear upgrade? new [Re: orlyandico]
      #6087807 - 09/18/13 11:32 AM

Quote:

looks like the PEC is pretty darn useless.

unless my eyes are deceiving me, having PEC off while guiding is better than having PEC on while guiding.




The value to the PEC to me would be to get 1 min subs without guiding. If I can do that, then I wouldn't bother with the autoguiding setup, laptop, cables, etc. So if I can achieve that it would be very useful.

I would agree that there is no point in autoguiding with PEC turned on, but I just wanted to test it anyway to see if it worked because I had read conflicting statements about using PEC and autoguiding together.

My guidescope is a 50mm (200mm focal length) WO mounted on my WO GTF102 using the WO bracket. I am using an old Meade DSI to guide with, so I'm not entirely sure if I have the settings anywhere close to optimal yet, but I left the settings the same for all these test runs. Perhaps a better camera would also yield different results.

I'm going to experiment more with the settings to see what gives the best results and then post those at some point.

Thanks for the feedback,

Timm


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Phillip Easton
sage


Reged: 12/24/10

Loc: DFW
Re: iEQ45 gear upgrade? new [Re: Astroeksarheio]
      #6090296 - 09/19/13 04:50 PM

Quote:

At that point(at least for me) its moving like its totally free especially with the koyo bearings i put on.

The bearigns of the kit seemed *BLEEP* to me. I hold them in my hands and twisted them. They turned like two or three times where the koyo turned eight times.





Hey, would you provide a link to the bearings you used? I would be interested in checking them out.

Cheers!


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Astroeksarheio
member


Reged: 03/14/13

Re: iEQ45 gear upgrade? new [Re: Phillip Easton]
      #6091116 - 09/20/13 05:44 AM

I went to a bearing shop (no e-store, no site or link to provide) that i know they deal with skf and koyo bearings and asked for high precision bearings the same type of the ones i already had. They gave me some high precision koyo bearings with exactly the same type and they cost 43 euros (4 bearings, had some discount too) . Dont know if the price was high or normal it is the first time i buy bearings

I dont remember the exact types of the bearings(the same that we got from ioptron) i will check when i get back home and try to find a link on the internet

Edited by Astroeksarheio (09/20/13 06:39 AM)


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chboss
professor emeritus


Reged: 03/24/08

Loc: Zurich Switzerland
Re: iEQ45 gear upgrade? new [Re: Astroeksarheio]
      #6093236 - 09/21/13 11:29 AM

OK I did the installation of the new worm gear set this morning...

Here are the main advantages looking at the parts:
- The surface of the new worm has a much finer finish. The old worms surface was quite rough
- The diameter of the ball bearings for the worm has been increased
- The new ball bearings are industrial types that are closed on both sides. The quality seems reasonable. I am not sure if installing higher quality bearings will really make a difference. The old ones seemed to have some rough spots and were open on one side.

The installation was straight forward. The instructions from iOptron are good, although they do not mention some details such as the new PEC reference disc that comes with the kit. However it is all pretty logical. ;-)

The only problem was the new brass part that is used to fix the worm into place. On mine there were a few burs that made it impossible screw the part in its end position. Using a file, this problem was solved easily.

Now I am waiting for a chance to do some measurement to see the raw periodic error with the new parts in place.

regards
Chris


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