Question about Meade ETX-90 (48x90 mm)

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Fork mount on side of R.A. slow-motion control is coming loose from base. This is not the side that contains the Dec. slow-motion control. There appear to be 3 plastic pegs protruding from the fork into the base. It appears that there must be some means of securing these inside the drive base. This is not visible by simply removing the metal base plate. It might be possible to see this area by removing the plastic plate on which the batteries and motor are mounted. It looks like there is just one hex nut in the middle that needs to be removed, but I am apprehensive that I might damage the motor drive. Thank you for your assistance. Leonard Ellis

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The drive motor will not be damaged as long as it is not being pried or pulled on. There should be a nut or a threaded cone to hold the pegs in place. It may be stripped or just need to be tightened.

Posted on Aug 07, 2010

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Posted on Jan 02, 2017

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I have water hammer on my new Peerless kitchen


Single lever faucets can turn off a water supply instantly. Try slowing down your handle motions when operating your faucet.
Water hammer can cause damage to your water supply system and attached equipment...namely...your water heater tank.
If your water piping is easily accessed....you can use pieces of carpet cut into 4 inch squares to isolate the pipe from the wood joists, then use a J hook or wire hook to secure the pipe and isolation material (carpet). If you have copper tubing be sure to use plastic coated J hooks or wire hooks. Good luck and always know how/where to turn your water off before working on your plumbing.
ps if the hammering becomes a continuous fluttering hammer when you slow your handle motion....you need to tighten your crown adjustment nut located under your handle....most new faucets come with a tool that has an Allen wrench on one side to tighten the handle hold down screw...and the opposite side will have a fork like tool that is specifically used to adjust the crown adjustment nut. The nut is usually white plastic and has two notches in the top that fit the fork like tool. Turn clockwise slightly...then test...repeat until fluttering hammer is gone.

Jun 30, 2014 | Delta Faucet Delta RP17453 Pull-Down...

Tip

You Just Bought an EQUATORIAL Telescope Mount!


Even though we warned you not to do this, you bought one anyway! Beginners should never buy an EQ telescope mount as their first telescope. It's too late now; so I guess we will need to teach you how to use it!

Equatorial mounts move in a way that seems not to very intuitive. Unlike the easy Alt AZ mount which moves up and down and left and right, the EQ mounted telescope seems to move in TWO dissimilar directions at the same time.

Additionally you must first polar align the mount on the North star Polaris before you can use it. SEE! we told you not to buy it!

Here are the steps to roughly polar align the telescope so you can use it. If it is motorized the single Right Ascension motor will keep the sky object inside the eyepiece for long periods of time. If you do not have a Right Ascension motor, the slow motion RA knob can be slowly turned to keep the sky object centered in the eyepiece.

Begin by leveling the mount and tripod. Move the entire mount and tripod so it is pointing roughly to North, as close as possible using the steps below or a compass. Don't forget to adjust for your magnetic deviation. My location's compass reading is about 5 degrees away from true North. This is called magnetic deviation. You can find your location's deviation on the internet. Then proceed with the steps below.

First, adjust the Declination to the latitude for your observing site. Declination is the angle that the scope is pointing UP, and it's the same as your latitude. For example Dallas, Texas is about 32 degrees North latitude, adjust the scope so the small indicator reads 32 degrees. By the way, the North star in Dallas, TX is about 32 degrees above the horizon. Your latitude matches the elevation of Polaris (the North star) above the horizon.

Second, either look through the polar alignment scope buried in the axis of the telescope mount, or look along side the axis, and get the star Polaris lined up in the cross-hair of the polar alignment scope, or as best you can by looking along the side of the mount axis, or lining it up using your compass.. This will put the scope to within about 3/4 of 1 degree of the TRUE North celestial sphere. This is good enough for VISUAL observation, but NOT good enough to do astro-photography..

Adjust the DECLINATION up or down, and move the entire mount left or right until you can see Polaris as indicated above, or it is lined up as close as possible.

Now you are roughly polar aligned. Now you can move the tube around by loosening the Right Ascension lock, and or the Declination lock until your sky object appears in the small finder scope mounted on top of the main telescope tube.(DO NOT MOVE THE MOUNT, and the counter weight should never be higher than the telescope tube) Lock down the scope in both axis and use the fine adjustment RA and DEC knobs to center the target. Again, DO NOT move the mount or tripod. The mount should still be pointing at Polaris.

This web site illustrates this procedure:
http://www.astronomy.net/articles/4/polaralign.html

also this web site

http://www.telescopes.com/telescopes/polaralignmentarticle.cfm

You should be able to keep an object within the field of view of the eyepiece by slowing turning the Right Ascension slow motion control knob-------- IF you are actually accurately polar aligned. Small adjustments may also be needed with the DEC slow motion knob since you are not exactly polar aligned using this rough alignment technique.

However it can be used successfully for visual observation. Your scope will now track the motion of the stars as they move across the sky.

Hope that helps you!

Clear Skies!
TelescopeMan

www.telescopeman.tumblr.com

on Dec 29, 2009 | Optics

1 Answer

08 K1200GT, vibration when you roll out of the throttle at speed, 17,000 mil.


Hi, William and the usual suspects are:
1. Wheels and/or tires worn or damaged.
2. Engine/transmission/vehicle not aligned properly.
3. Primary chain badly worn or links too tight as a result of insufficient lubrication or misalignment.
4. Engine to transmission mounting bolts loose.
5. Upper engine mounting bracket loose.
6. Ignition timing incorrect/poorly tuned engine.
7. Internal engine problem/flywheels shift.
8. Broken frame.
9. Stabilizer links worn or loose.
10. Rubber mounts loose or worn.
11. Rear fork pivot shaft nuts loose.
12. Front engine mounting bolts loose.
For more information about your issue, please visit the websites below. Good luck and have a nice day.
Engine Vibration BMW com
My K1200S woes the letter and the fixes Bikes com Excellence in Motion
http://www.carlsalter.com/download.asp?p=347
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Oct 04, 2012 | 2008 BMW K 1200 GT

1 Answer

I have an older meade LX2000 EMC 10


The main problems encountered with the mechanics of the telescope centre around the mechanical swarf, grease compound, the liberal use of grease and the quality of machining of the main DEC and RA gears.
1. Remove the motors from the telescope. Be careful when removing either motor as there is a compression spring between the motor mounting frame and the worm shaft assembly.
The RA motor is located under the telescope body, removing the 4 screws and 2 Allen bolts will allow the bottom cover to be removed, thereby allowing access the the 2 Allen bolts holding the motor in place. Unplug the motor from the main PCB before removal.
The DEC motor is in the the fork arm containing the clutch and fine DEC adjustment control. (Never to be used with power applied to the scope). Remove the 3 small Allen screws holding the plastic cover plate in place and the DEC clutch knob to allow access to the motor. Remove the RJ45 connector located inside the telescope fork arm. Then remove the motor by unscrewing the 2 Allen bolts holding the motor in place.
2. Remove all grease from the motor worms, especially around the RA motor's magnetic pulse detector and the permanent magnet built into the worm shaft.
3. Remove all grease from the main DEC and RA gears, making sure to clean into the gear teeth.
4. Lightly re-grease with a Molybdenum Disulphide based grease (Castrol MS3 is great for this application if you can get it)
5. Assemble in reverse order. But before doing so, carry out the electrical adjustment above then, (a) relocate the the RA and DEC control PCB's in the vertical plane thereby gaining access to their respective backlash Allen screws. Adjust for 20thou max clearance when in final position. Note:- the DEC adjustment screw has to be replaced for a longer unit complete with a thin bolthead as this adjustment has to be carried out with a spanner....there is no room for an Allen key adjustment here.
6. A drop of Loctite must be applied after adjustment.
7. The final part of the process is to run in the gearing. Apply 12 volts to the motor wires, either at their respective plugs or to the motor direct. Allow to run for 2 to 3 hours in each direction by reversing the battery polarity to bed the teeth engagement. Remember to release the clutches.

Dec 28, 2011 | Optics

1 Answer

Science tech 262 manual


Can't find a manual. This is a 76mm reflector on a Alt/AZ mount.
1. During the day, put in the 20mm eyepiece and point to a object around 100 yards away.
2. Focus on the object
3. Align the finder to the object in the eyepiece
4, Set up at night, give the scope time to reach outside temperature
5. Point scope with finder at the moon. (More than half full will be too bright)
6 Use the lowest power eyepiece (highest number) and focus on the moon.
7. You may now use higher power eyepieces to observe.
8. Pointing the scope usually involves loosing 2 knobs to move the scope in up/down and side to side motion. There may be slow motion controls to adjust the scope as objects in the sky move.

Nov 27, 2011 | Optics

1 Answer

I have never had a telecope before and have purchased the Celestron 114EQ modelr n 31042 Im looking for step by step instructions on how to use it


Do you have a manual?

This is a small reflector style telescope on an equatorial mount-- the mount must be POLAR ALIGNED in orderr to be used properly. Guess you did not know that when you bought an EQUATORIAL mount.

Read this:
http://www.astronomy.net/articles/4/polaralign.html

Once the scope is polar aligned place the eyepiece with the largest number written on it into the focuser. The moon should be your first target at night. the RA knob and the DEC knobs (slow motion controls) are used to keep the object centered in the eyepiece.

Download this free planetarium software --
www.stellarium.org

Aug 25, 2011 | Celestron PowerSeeker 114 EQ Telescope

1 Answer

The DEC Slow Motion Cable Inoperative in both directions


Have you tightened down the clutches? This is a simple mechanism that turns a small gear when you turn the knobs.

If the gears are broken you will need to buy a new mount from Celestron:

Here:
http://www.celestron.com/c3/page.php?PageID=37



www.telescopeman.org
www.telescopeman.us
www,telescopeman.info

Aug 17, 2011 | Celestron AstroMaster 114EQ (100 x 114mm)...

2 Answers

Change oil fork


There is a bit of directions on how to change the oil. I will give you a link to a site that has pictures with step-by-step directions that will work for any bike fork.

http://www.bluepoof.com/motorcycles/howto/svs_fork_oil/

If you have any more questions, feel free to ask..

Nov 25, 2009 | 2004 KTM EXC 200

1 Answer

Bolt holding dec drive motor on 16 loosens.


You have a LARGE Meade telescope. This should be an easy fix if you can disassemble the fork arm and get inside.

First I would contact Meade customer service to see if they have a manual that shows disassemble instructions. If not I would join the Yahoo LX200 forum and look for help there with an owner of the 16 inch model.

http://www.meade.com/support/index.html

Just search in Yahoo Groups for the LX200 forum.

On smaller scopes the DEC motor is held on by two spring loaded bolts, probably one has become loose?

Nov 04, 2009 | Meade LX200GPS Telescope

1 Answer

Right ascesion slow motion control knob loose, does not work


The RA knob has a setscrew that fixes it to the shaft. Just need to find the correct size and tighten.

Jul 06, 2008 | Meade LX200GPS Telescope

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