Does This Sound Plausible??

Discussion in 'Motorhome Chat' started by Tootles, Mar 3, 2014.

  1. Tootles

    Tootles Funster

    Joined:
    Sep 14, 2013
    Messages:
    8,983
    Likes Received:
    30,871
    Location:
    Lancaster
    I was originally thinking of using 'mini' type exhaust bobbins , (one on each corner), to secure a 3' x 2' solar panel to the roof of our Hymer, drilling and tapping the roof to mount it. However, someone mentioned last year that they had stuck theirs on using a special 'glue'?
    And so, do the team think it would be plausible to saw off the threaded rod(s) on on one side of the mini bobbins, and stick them to the roof? Would the surface area of the flat bobbins be strong enough to secure the panel? Mini bobbins are great, because they do allow a large degree of flexibility through movement, rather then having the panel secured directly to the roof. Any ideas on this would be gratefully accepted.
    Ta, Dave. :Smile:
     
  2. Snowbird

    Snowbird Funster Life Member

    Joined:
    Apr 24, 2009
    Messages:
    10,140
    Likes Received:
    16,389
    Location:
    Liverpool.
    The special glue used is Sikaflex. I would not think bobbins would have enough area to hold solar panels down. Am not a lover of drilling holes in motorhome roofs either. I have 4 panels on the roof all secured with Sikaflex with no problems. Make sure you leave an air space under the panels.
     
    • Like Like x 1
  3. Merle

    Merle Funster

    Joined:
    Mar 31, 2013
    Messages:
    417
    Likes Received:
    214
    Location:
    Wiltshire
    Sorry you have lost me with 'exhaust bobbins' but my panel was professionally fitted with corner brackets Sikaflexed to the roof, no drilling of holes at all other than for the gland where the cable comes through into the van. It has been fitted for 3 years and been no problem.
     
    • Like Like x 1
  4. Popeye

    Popeye Funster

    Joined:
    Sep 5, 2011
    Messages:
    7,710
    Likes Received:
    16,910
    Location:
    New Forest

    Hi Tootles, I have used Silkaflex fairly extensively on all three of the sailing yachts I've owned and it is brilliant stuff, however I can't get my head around why you need the suspension that these bobbins will give you.
     
    • Like Like x 1
  5. laneside

    laneside Funster

    Joined:
    Aug 14, 2009
    Messages:
    3,490
    Likes Received:
    5,289
    Location:
    Oradour sur Vayres
    Corner fixing brackets on Ebay less than £20 for 4 and no drilling using Sikaflex.

    Your choice
     
  6. Larby

    Larby Funster

    Joined:
    Jun 17, 2012
    Messages:
    1,681
    Likes Received:
    3,872
    Location:
    North Essex
    Hi Tootles, As you will see from the picture my Solar panel is sitting on 4 corner mounts. They are stuck to the roof with Sikaflex 512. This stuff will go on creamy and then become cured but not hard. Sticks like the proverbial ...............I have drilled mounts and used stainless steel self tappers to attach panel to mounts
    No need to :Eeek:drill roof :Eeek:
    Just 1 hole through roof for cables via box, also stuck with Sikaflex 512.

    Peter
     

    Attached Files:

  7. Terry

    Terry Funster

    Joined:
    Dec 27, 2007
    Messages:
    10,722
    Likes Received:
    6,224
    Location:
    South yorks
  8. jhorsf

    jhorsf Read Only Funster

    Joined:
    May 15, 2009
    Messages:
    9,157
    Likes Received:
    8,067
    Location:
    DERBYSHIRE
  9. Tootles

    Tootles Funster

    Joined:
    Sep 14, 2013
    Messages:
    8,983
    Likes Received:
    30,871
    Location:
    Lancaster
    These exhaust mounting bobbins act as a shock dampener. I have used them extensively in the past as generator shock/vibration absorbers, and of course by using them you can remove the panel to replace if necessary.
    I wasnt aware that special corner brackets were available, and so thanks to all for that. :thumb:
     

    Attached Files:

  10. Wildman

    Wildman Read Only Funster

    Joined:
    May 30, 2008
    Messages:
    15,458
    Likes Received:
    8,598
    Location:
    Ilfracombe, Devon
    oop wrong thread:Rofl1:
     
    Last edited: Mar 3, 2014
    • Like Like x 1
  11. Larby

    Larby Funster

    Joined:
    Jun 17, 2012
    Messages:
    1,681
    Likes Received:
    3,872
    Location:
    North Essex
    Three of those bobbins hold the air filter casing to the engine bay of my Ducato.
    They broke when I tried to remove the casing to get at the fuel filter.
     
  12. DP_JAY

    DP_JAY Funster Life Member

    Joined:
    Mar 17, 2010
    Messages:
    1,798
    Likes Received:
    1,022
    Location:
    Cark, Cumbria
    In a word NO
     
    • Like Like x 2
  13. Popeye

    Popeye Funster

    Joined:
    Sep 5, 2011
    Messages:
    7,710
    Likes Received:
    16,910
    Location:
    New Forest

    Yes I knew exactly what you meant by your description, I used one on the back of an old chain saw where the rubber mounting had failed over the years, best of luck with the Silki :thumb:
     
    • Like Like x 1
  14. haganap

    haganap Funster Life Member

    Joined:
    Dec 5, 2007
    Messages:
    11,068
    Likes Received:
    13,673
    Location:
    Heavan
    Tootles, just get some brackets or corner fixings, use sikaflex great stuff.

    Mine have been from one van to another including camos dome using the stuff, using your bobbins will require roof driilng so why bother increasing the risk of damp
     
    • Like Like x 1
  15. Moodybrook

    Moodybrook Funster

    Joined:
    Jul 7, 2013
    Messages:
    754
    Likes Received:
    628
    Location:
    Dumfries
    The threaded parts of your bobbins will not be long enough to penetrate your roof and get a nut on it anyway, and you would need a washer to spread a bit of the load. Get the plastic mounts and mastic it down with Sikaflex. I started a thread on "solar" forum on this site "Sikaflexing" got lots of good advice and tips like using 3mm tile spacers to get your depth of mastic correct, do a search.

    I used bolts as well but that was to do with the construction of my roof.
     
    • Like Like x 1
  16. Tootles

    Tootles Funster

    Joined:
    Sep 14, 2013
    Messages:
    8,983
    Likes Received:
    30,871
    Location:
    Lancaster
    Thanks for your in depth reply......:Smile:

    Just ordered the corner panels, and the through-roof marine two pin plug/socket. Many thanks to all of you who have helped out on this. :thumb::thumb:
     
  17. Geo

    Geo Trader - Funster

    Joined:
    Jul 29, 2007
    Messages:
    9,520
    Likes Received:
    5,573
    Location:
    Mansfield,Notts
    This sounds like a problem area waiting to happen,(built in weakness) whats up with the standard well proven cable gland
    G
     
    • Like Like x 1
  18. Tootles

    Tootles Funster

    Joined:
    Sep 14, 2013
    Messages:
    8,983
    Likes Received:
    30,871
    Location:
    Lancaster
    Had two on the roof of the boat for 20 years, no problems, and this way in can be removed at any time, just leaving the capped off socket. :thumb:
     
  19. bjandlin

    bjandlin Funster

    Joined:
    Feb 29, 2012
    Messages:
    172
    Likes Received:
    97
    Location:
    Reading & Surgeres France.
    Good afternoon, earlier in this thread someone mentioned Tool Station PU 40.
    Seems a good price compared to Sika. Has anyone used it & with what success ?
    Would be interested to hear.
    Thanks.
    Barrie.
     
Loading...

Share This Page