Dear Tom,
The R4 size Belleville spring must be compressed.??
You can only fit in 1 Belleville washer else you would run out of space in the bearing block mounting to get the worm fully into the ring gear teeth.?
When fully compressed, it will provide 7 pounds of force.??
If you listen carefully, you can hear a faint "click" when it's fully compressed and then let go.? It's how you can tell the bearing is sliding in the bearing block sleeve.??
Contact me if you need further guidance...I have a couple of the Belleville washers left if you need one or two. I put one each in RA and DEC.??
Here is the latest paper on the upgrade...attached.
Best, Michael
On Sun, Jul 12, 2020, 10:09 AM wa1vta01452 < loeblt@...> wrote: To those of you who have actually tried placing one or multiple Bellville? springs on the worm shaft, do you compress it by squeezing both worm blocks together? Seems to me if the spring is flattened you lose spring action and if you don't completely compress it, there is play in the worm shaft. Any thoughts appreciated from people who are experienced playing with the old worm.
Tom
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Re: PEC - great result or did something wrong?
Yes.? I had to invert the curve to get an improvement in PE.? I tried it both ways and non-inverted made PE worse.? ? Also,? on both runs PemPro recommended (or defaulted to) ¡°linear¡± algorithm to fit the curve.? ¡°Quadratic¡± did not significantly improve the RMS calculation, but that could be because it seems I had a low RMS and P2P to begin with. ? Larry
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To those of you who have actually tried placing one or multiple Bellville? springs on the worm shaft, do you compress it by squeezing both worm blocks together? Seems to me if the spring is flattened you lose spring action and if you don't completely compress it, there is play in the worm shaft. Any thoughts appreciated from people who are experienced playing with the old worm.
Tom
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Re: Finally, some better results - M39 and M29
Very nice images, Seb. Glad you have your mount system working very well, imaging nicely.?
Once you learn Photoshop/Curves, (or competitive programs that also have a Curves function) you'll have fun stretching your images to reveal fainter objects.??
Enjoy yourself and stay safe,
Michael
Hello,
I haven't been here for a while. The weather was awful with lots of rainfalls, storms, floods etc. I had something else on my mind too.
But, I was able to take some trial shots of M39 during a full moon, and M29 a few days later.
A picture of M39 was taken and precessed by me, and I liked it.
Here is a link:
A picture of M29 was taken by me but processed by my colleagues. I still don't know how to use PS.
A link:
I am happy, because I am able to have round stars now, even without PEC on 180 sec subs. I use PHD2 and have total RMS at around 0,7-0,8 now.
Seb
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Finally, some better results - M39 and M29
Hello,
I haven't been here for a while. The weather was awful with lots of rainfalls, storms, floods etc. I had something else on my mind too.
But, I was able to take some trial shots of M39 during a full moon, and M29 a few days later.
A picture of M39 was taken and precessed by me, and I liked it.
Here is a link:
A picture of M29 was taken by me but processed by my colleagues. I still don't know how to use PS.
A link:
I am happy, because I am able to have round stars now, even without PEC on 180 sec subs. I use PHD2 and have total RMS at around 0,7-0,8 now.
Seb
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>>>
you also have to have a grease with a base oil that is not going to seperate and run off when things get hot leaving the hardened baked lay mess behind like Lithium and other clay thickened greases do, Super Lube doesn't do that.?
definitely NOT lithium!
On Sat, Jul 11, 2020 at 12:33 PM Chip Louie < chiplouie@...> wrote: Hi Michael,
You have to remember we live in a state that has the gamut of air temperatures from very high to sub zero temps and as crazy as that sounds some people use their mounts in these conditions. The low temp start up torque is very important for imagers who seem to like the conditions that cold weather seems to bring with it. But you also have to have a grease with a base oil that is not going to seperate and run off when things get hot leaving the hardened baked lay mess behind like Lithium and other clay thickened greases do, Super Lube doesn't do that.?
--
Chip Louie - Chief Daydreamer Imagination Hardware
-- Brian?
Brian Valente portfolio
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That is good stuff, it is the only grease I use. Great for nearly everything that I've tried it on around the house.
HAPPY SKIES AND KEEP LOOKING UP Deric
Sent from my Galaxy Tab A
toggle quoted message
Show quoted text
-------- Original message --------
From: Chip Louie <chiplouie@...>
Date: 7/11/20 2:22 PM (GMT-06:00)
Subject: Re: [Losmandy_users_io] Maintenance
Here is the right stuff and I think the best deal, 14oz. tub on Amazon.com:
This is what I bought and shared with my friends and used when cleaning and lubing Losmandy G11 and GM8 mounts.?
?
--
Chip Louie - Chief Daydreamer Imagination Hardware
|
Hi Michael,
You have to remember we live in a state that has the gamut of air temperatures from very high to sub zero temps and as crazy as that sounds some people use their mounts in these conditions. The low temp start up torque is very important for imagers who seem to like the conditions that cold weather seems to bring with it. But you also have to have a grease with a base oil that is not going to seperate and run off when things get hot leaving the hardened baked clay mess behind like Lithium and other clay thickened greases do, Super Lube doesn't do that. This is easy to figure out, check the base oil on the TDS, lithium, petroleum and silicone are bad, check the thickener used if listed.??
--
Chip Louie - Chief Daydreamer Imagination Hardware
|
Here is the right stuff and I think the best deal, 14oz. tub on Amazon.com:
This is what I bought and shared with my friends and used when cleaning and lubing Losmandy G11 and GM8 mounts.?
?
--
Chip Louie - Chief Daydreamer Imagination Hardware
|
Re: PEC - great result or did something wrong?
On Sat, Jul 11, 2020 at 10:19 AM, Larry Couture wrote:
nspired by Brian's PEC videos, I downloaded the Pempro trial and ran it twice over two nights on my G11/Gemini 1 with my RC10 and ASI1600, with an image scale of 0.529 as/px.? My PHD2 RMS normally ranges between 0.6 and 1.2, but is typically 0.8-1.0.? On both PemPro runs, without PEC and after 5 cycles, and with a very good PA wth Sharpcap, I got a reported RMS of about 1.
Just checking.? Did you invert the curve before uploading it to the Gemini?
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PEC - great result or did something wrong?
Inspired by Brian's PEC videos, I downloaded the Pempro trial and ran it twice over two nights on my G11/Gemini 1 with my RC10 and ASI1600, with an image scale of 0.529 as/px.? My PHD2 RMS normally ranges between 0.6 and 1.2, but is typically 0.8-1.0.? On both PemPro runs, without PEC and after 5 cycles, and with a very good PA wth Sharpcap, I got a reported RMS of about 1.05-1.2 as/px and P2P of 3-4".?? After uploading the PEC curve each of the two nights, I got a corrected total RMS of 0.75 and 0.85 and P2P of 1.8 and 2.3, respectively.?? I suppose the RMA values are reasonable, but is a P2P of >2" even possible with a G11?? Is it possible I've done something wrong in setting up PemPro or any other reason to not believe these results??
Larry
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Re: Sawtooth pattern in DEC
Setting it to 800 helped. It settled down to 750ms. Getting pretty good guiding now - anywhere between 0.6-0.7¡± RMS. Hysteresis seems better than PPEC. SharpCap was helpful in verifying polar alignment quality. Thanks for the help and advice, Brian!
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Many thanks for the SuperLube info, Chip.??
I recall years ago that an Orion EQ6 owner experimented with many lubes, testing them cold from his freezer...he concluded SuperLube the best for low temperature behavior.??
Stay well, and thanks again for the product details,
Michael
For the people who are looking to buy Super Lube here is some information.?
Synco is the company that makes the Super Lube product. The full name is Super Lube Multi-Purpose Synthetic Grease With Syncolon (super small Teflon particles) I am using the NLGI-Grade-2 product, the 14 oz. tub is #41160/2 and a 14 oz. cartridge is #41150/2. You can also buy the same product in smaller sizes but the tubs are the cheapest per ounce cost.?
Regarding NLGI grades this is the consistency of the grease, NLGI-Grade-1 is like tomato paste or yogurt where NLGI-Grade-2 is like natural peanut butter. I have used both but use NLGI-Grade-2 stuff.??
--
Chip Louie - Chief Daydreamer Imagination Hardware
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For the people who are looking to buy Super Lube here is some information.?
Synco is the company that makes the Super Lube product. The full name is Super Lube Multi-Purpose Synthetic Grease With Syncolon (super small Teflon particles) I am using the NLGI-Grade-2 product, the 14 oz. tub is #41160/2 and a 14 oz. cartridge is #41150/2. You can also buy the same product in smaller sizes but the tubs are the cheapest per ounce cost.?
Regarding NLGI grades this is the consistency of the grease, NLGI-Grade-1 is like tomato paste or yogurt where NLGI-Grade-2 is like natural peanut butter. I have used both but use NLGI-Grade-2 stuff.??
--
Chip Louie - Chief Daydreamer Imagination Hardware
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Re: USB 3, You were right Michael....
Oh, yeah, no micro here.
But more importantly, I'm all about looming my wiring for stress relief and security.
I use a product called Spiral Wrap to bundle the wires in a nice secure "cord".?
This new USB 3 cable I got to extend my OEM cable .
Probably at least 1.5X the USB 2 it replaces.
But I'm just going on the changes in performance between the mount/telescope, and the Baby Dell.
It's a zippy, zippy kinda thing. And the WiFi performance seems to have stepped up as well by going USB 3.0 from the computer to the mount.
The USB 2 wires from the cameras and focuser are 18". But I'd bet the 15' USB 2 trunk line was a bottleneck.
It was great advice that has shown a marked improvement. Thanks Michael!
I wanted to give credit where credit is due.
--
SonnyE
(I suggest viewed in full screen)
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Rough spots when turning the crown wheel
My EQStar stepper motor system binds up frequently so I started investigating why.? When I slew and it binds up I stop the slew, disconnect the stepper motor cable and turn the worm by hand.? What I found each time is that the worm takes much more force to turn at those rough spots than elsewhere.? So The EQStar system is not fully to blame but the mount, a G11S, partly as well.
When I keep rotating the worm back an forth manually at a rough spot, the motion becomes smoother until it feels practically normal.? Then EQStar can then move it back and forth over that spot without a problem.? I uncovered the DEC crown wheel to check for unevenness but of course the tolerances are small and I could not see anything wrong with it.? The wheel was well greased and looked fine AFAICT.
Has anybody experienced something similar, and what could cause it to move smoother after I work it?? Is there invisible gunk on the crown wheel, do I need to clean/lubricate it?
I can use the EQStar goto if I loosen the worm and allow for some slack.? But from trying I know that there is more slack in some positions than others, and that if I apply the worm tightening procedure on the Losmandy Youtube channel, the motors will almost certainly bind up.?
I don't have the spring loaded worms and don't intend to buy any because I expect the mount to work as is.? I was told that Scott will be back next week but until then I'm curious if anyone has similar experiences.
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PS i should mention that we've tested literally dozens of lubricants over the past 40 years doing these mounts. Probably even more than that
On Fri, Jul 10, 2020 at 1:10 PM Brian Valente via <bvalente= [email protected]> wrote: Chip i've discussed this with Scott many times and he certainly sees it differently.
i'll see if he has any other details he wants to weigh in with
On Fri, Jul 10, 2020 at 9:49 AM Chip Louie < chiplouie@...> wrote: Brian,
MP-50 is a stiff, heavy clay thickened lube and is not a synthetic based grease. As I've posted before MP-50 is not as good a lubricant, just check out the TDS sheets for MP-50 vs SuperLube, particularly the 4-ball test, cold start torque and cold viscosity. SuperLube consistently offers better specs and has been much more fully tested under more conditions. In this application IMO SuperLube is a much more suitable grease.?
--
Chip Louie - Chief Daydreamer Imagination Hardware
--
Brian?
Brian Valente portfolio
-- Brian?
Brian Valente portfolio
|
Chip i've discussed this with Scott many times and he certainly sees it differently.
i'll see if he has any other details he wants to weigh in with
On Fri, Jul 10, 2020 at 9:49 AM Chip Louie < chiplouie@...> wrote: Brian,
MP-50 is a stiff, heavy clay thickened lube and is not a synthetic based grease. As I've posted before MP-50 is not as good a lubricant, just check out the TDS sheets for MP-50 vs SuperLube, particularly the 4-ball test, cold start torque and cold viscosity. SuperLube consistently offers better specs and has been much more fully tested under more conditions. In this application IMO SuperLube is a much more suitable grease.?
--
Chip Louie - Chief Daydreamer Imagination Hardware
-- Brian?
Brian Valente portfolio
|
To summary, SuperLube Teflon perhaps is the best. Where can I find it? Not in Amazon, nort in SuperLube.com.
lbarneo
El vie., 10 jul. 2020 a las 19:20, leroy (< lmarion@...>) escribi¨®:
I use Corning 33 which is used on Mars rovers, for my Montana
winters.? Some of the clearest weather I get now is winter, rained last
night.
?
But as hot as the rest of the country is the M50 is maybe OK.
?
MP-50?may
be applied directly to hot surfaces without running
off or dripping. Conversely, it may be applied at temperatures
as low as 0¡ãF (-18¡ã°ä).
MP-50?is
water resistant,
withstands extreme weather elements, and helps prevent
corrosion onparts
exposed to water, steam, most acids and alkalis.
?
leroy
in big sky
?
From: Chip
Louie
Sent: Friday, July 10, 2020 10:49 AM
Subject: Re: [Losmandy_users_io] Maintenance
?
Brian,
MP-50
is a stiff, heavy clay thickened lube and is not a synthetic based grease. As
I've posted before MP-50 is not as good a lubricant, just check out the TDS
sheets for MP-50 vs SuperLube, particularly the 4-ball test, cold start torque
and cold viscosity. SuperLube consistently offers better specs and has been much
more fully tested under more conditions. In this application IMO SuperLube is a
much more suitable grease.
--
Chip Louie - Chief Daydreamer
Imagination Hardware
|
Leroy,
We're not on Mars and Dow 33, now called Molykote 33 is still a Lithium and Silicone oil base. Lithium greases dry out and Silicone oil is a weak lubricant that separates and runs all over the place including the clutches causing slippage problems. Read the data sheets Molykote 33 is not as good a lubricant as SuperLube pure synthetic with Teflon. SuperLube also has an extremely low cold startup torque and won't freeze or melt off the bearings or worms at least not on Earth.?Dow 33/Molykote 33 was the only game in town 25-30 years ago when full synthetics were not widely available but Dow 33 has long since been surpassed.??
?
--
Chip Louie - Chief Daydreamer Imagination Hardware
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Michael Herman
Chip Louie
Luis Barneo