Jump to content


Photo

ROR Tracks Stuck by Frost on First Night

  • Please log in to reply
45 replies to this topic

#26 Ian Robinson

Ian Robinson

    Soyuz

  • -----
  • Posts: 3951
  • Joined: 29 Jan 2009
  • Loc: 33S , 151E

Posted 12 December 2013 - 05:44 PM

Ian, got any product ideas to make this happen? :)


In industry the heat tracing is simply run along the pipe / tube you want to warm.

http://www.thermon.c...les/TEP0059.pdf

#27 dawziecat

dawziecat

    Vanguard

  • *****
  • Posts: 2332
  • Joined: 20 Oct 2010
  • Loc: Rural Nova Scotia

Posted 12 December 2013 - 06:28 PM

WD40 displaces water I would think it would help eliminate
moisture to prevent freeze up


Well, I am still shocked at Mary's heresy! I considered contacting a mod to have her heinous post expunged! ;) ;)

I did the WD40 thing . . and the roof still locked up on me. I am now all but positive it was caused by a thin layer of moisture on the ball bearings? Why the WD40 was not sufficient I don't know but it could have been I did not get it into the bearing races as I lost my little straw applicator and just used a wide spray. Truth is, I did not really understand how those wheels were constructed and wasted a lot of WD-40 on fittings that have no effect on the wheels rolling freely in the first place.
This morning, I did my best with a straw applicator to get the "liquid grease" right into the bearing races. It has not seized up since. I was out there this evening, it's -12C(10F) and the roof behaved very well. So, I think I have the problem licked.

#28 Mary B

Mary B

    Vendor - Echo Astronomy and Electronics

  • *****
  • Vendors
  • Posts: 3070
  • Joined: 21 May 2010
  • Loc: Minnesota

Posted 12 December 2013 - 06:43 PM

WD40 displaces water but also evaporates rapidly leaving little lubrication behind. It also attracts dirt and makes it stick, we banned it in the shop at the casino because of that. Guys used it on coin hoppers and gummed them up badly with coin dust, we ended up having to rebuild over 100 of them.

#29 thesungazer

thesungazer

    Sungazer

  • *****
  • Posts: 1317
  • Joined: 06 May 2003
  • Loc: Maryland

Posted 12 December 2013 - 08:12 PM

Another idea is white lithium grease. I put it on twice a year and lube the exposed metal parts too. Works great.

Greg

#30 John Fitzgerald

John Fitzgerald

    In Focus

  • *****
  • Posts: 2867
  • Joined: 04 Jan 2004
  • Loc: AR

Posted 12 December 2013 - 08:19 PM

IMO the only way to go especially in freeze prone areas is inverted v track and matching wheels. Garage door wheels are a problem when not totally shielded.

#31 DeanS

DeanS

    Gemini

  • *****
  • Posts: 3283
  • Joined: 12 Jul 2005
  • Loc: Central Kentucky

Posted 12 December 2013 - 08:36 PM

When I first built mine I had pulleys and rope to open the roof. Thought it would be fine even though it took a bit of effort to pull. First night that it could real cold, down in the 20's or so and I went to close up, it was like pulling a car with fishing line. The grease in the wheels must have thickened up and it was vey difficult to move which could be part of your issue as well. I had the 12 volt winches on it the next day ;)

Now I am close to having the Backyard Observatory motor and rack installed so I will be able to automate it.

Dean

#32 thesungazer

thesungazer

    Sungazer

  • *****
  • Posts: 1317
  • Joined: 06 May 2003
  • Loc: Maryland

Posted 12 December 2013 - 08:42 PM

Installing a motor is a worthwhile investment, Dean. I love it.

Greg

#33 dawziecat

dawziecat

    Vanguard

  • *****
  • Posts: 2332
  • Joined: 20 Oct 2010
  • Loc: Rural Nova Scotia

Posted 13 December 2013 - 09:36 AM

It went to -17C(+1F) here last night. It had risen to -10C(+15F) by morning. A good "cold soak" for the lubricated rollers. The roof rolls readily! Anyone else having trouble with garage door rollers in sub-freezing weather should try lubing them and understand better than I did just where to get the lube. Not sure all rollers are built the same but I attach a close up of mine. The free play for lateral movement is not likely a problem in freezing temps although I suppose it's possible if your tracks are out of parallel. The lube needs to get into the bearing races in the hub, as pictured.

I doubt I will install any electric openers. Even a hand winch seems unnecessary, if the roof continues to roll as well as it does right now. A simple push stick is fine. Full automation, as in a remotely located observatory is not a goal for me.

Attached Files



#34 Agatha

Agatha

    Apollo

  • *****
  • Posts: 1201
  • Joined: 04 Jun 2012
  • Loc: Coulee Region, Wisconsin

Posted 13 December 2013 - 11:49 AM

At the risk of committing sacrilege of WD 40, I must agree with Mary. :grin:

I love WD 40...always have a can around. It's good for many things. It is great for cleaning grease. It eats it for lunch. :lol: It is so thin to penetrate and will fix a squeaky hinge among other things. It has no real lubrication properties, especially for heavy use. I'm so glad that you got some proper lube in those wheels. Sounds like it is working beautifully.

Your observatory is absolutely beautiful. It's been fun watching your threads.

I have a question about your siding. Does it need to be painted or can it be left as is with maybe a sealer? I love the look of it as is.

Best,

#35 dawziecat

dawziecat

    Vanguard

  • *****
  • Posts: 2332
  • Joined: 20 Oct 2010
  • Loc: Rural Nova Scotia

Posted 13 December 2013 - 12:01 PM

Thanks, Linda.

I have learned the error of my ways with WD-40 and "see the light" Thanks to Mary for that. (I do cling to my religious fervor when it come to duct tape though! :) )

The siding is pine. It will weather to a rather unsightly, dingy black in this climate. It looks pretty now but that will change with time. I could indeed seal it with a transparent stain although my experience is so-so with that stuff. It looks great for a year or three and then not so great. Of course it comes down to personal preference. My late wife would want it to match the colours she picked out for our garden shed. I like them too and plan to use an opaque stain on the siding and paint on the trim to match that shed. Those colours have stood up very well these past ten years.

#36 Mary B

Mary B

    Vendor - Echo Astronomy and Electronics

  • *****
  • Vendors
  • Posts: 3070
  • Joined: 21 May 2010
  • Loc: Minnesota

Posted 13 December 2013 - 02:34 PM

Duct tape is a must! I have rolls all over the place.

#37 jazle

jazle

    Vostok 1

  • -----
  • Posts: 137
  • Joined: 20 May 2010
  • Loc: California, USA

Posted 13 December 2013 - 03:24 PM

Waiting to see who creates the first duct tape dew shield on a SCT.

#38 Footbag

Footbag

    Fly Me to the Moon

  • *****
  • Posts: 5841
  • Joined: 13 Apr 2009
  • Loc: Scranton, PA

Posted 13 December 2013 - 03:25 PM

Waiting to see who creates the first duct tape dew shield on a SCT.


My dew shield is reinforced with duct tape. Does that count?

#39 tim57064

tim57064

    Apollo

  • *****
  • Posts: 1498
  • Joined: 23 Aug 2012
  • Loc: Southeast South Dakota,USA

Posted 13 December 2013 - 03:43 PM

+1 for the Duct Tape Dew Shield, Red G. would be proud. :waytogo:

#40 Raginar

Raginar

    Fly Me to the Moon

  • *****
  • Posts: 6138
  • Joined: 19 Oct 2010
  • Loc: Rapid CIty, SD

Posted 14 December 2013 - 07:15 PM

The slipping sound was indeed due to the carriage assembly being stripped out. It looked like the spring that holds it together had somehow cracked the plastic. I dunno if it was just general misuse or a cheap part. The new one is working flawlessly.

I might just have one sitting around in case it happens again.

#41 mikey cee

mikey cee

    Cosmos

  • *****
  • Posts: 8038
  • Joined: 18 Jan 2007
  • Loc: bellevue ne.

Posted 15 December 2013 - 01:03 AM

So, I think I have the problem licked. Just as long as you don't lick the rollers at 15°! :roflmao:

#42 Footbag

Footbag

    Fly Me to the Moon

  • *****
  • Posts: 5841
  • Joined: 13 Apr 2009
  • Loc: Scranton, PA

Posted 15 December 2013 - 09:47 AM

+1 for the Duct Tape Dew Shield, Red G. would be proud. :waytogo:


I'm already on Red G's goto list. I spent 10 years of my life using a duct tape wallet. I've built hundreds in my day.

#43 Raginar

Raginar

    Fly Me to the Moon

  • *****
  • Posts: 6138
  • Joined: 19 Oct 2010
  • Loc: Rapid CIty, SD

Posted 15 December 2013 - 12:42 PM

You guys must be fans of Red Green.

#44 herrointment

herrointment

    Aurora

  • *****
  • Posts: 4584
  • Joined: 12 Mar 2011
  • Loc: North of Hwy. 64

Posted 17 December 2013 - 07:44 PM

Quando omni flunkus moritati!

#45 csa/montana

csa/montana

    Den Mama

  • *****
  • Posts: 86311
  • Joined: 14 May 2005
  • Loc: montana

Posted 17 December 2013 - 09:49 PM

Ok, back to the subject of the thread now. :)

#46 jimbo728

jimbo728

    Mariner 2

  • -----
  • Posts: 246
  • Joined: 05 Nov 2013
  • Loc: Central NH

Posted 20 December 2013 - 12:19 AM

Nickel Antiseize Paste.. Apply to rails,wheels and bearing surfaces with a small ,1" paint brush.. This kept my former clubs ROR from frost sticking for over 40 years in NH. We did it every 2-3 years.
GOOD LUCK, NICE OBSERVATORY.
Jim






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics