Petter PU Powered Lint Puller

Discussion in 'Discussion' started by Skankin_giant, Feb 10, 2022.

  1. Skankin_giant

    Skankin_giant Well-Known Member

    Don't suppose anyone (Roland) knows about a Petter PU powered lint puller sold by Mackie?

    Apparently they were fitted with a 6.5hp Petter PU 1600/800rpm. It was asked if anyone has one but IIRC the PU6 is a bit of a rarity.

    Thanks in advance,

    Cheers, Steve
     
  2. petternut

    petternut Administrator

    Steve
    Not come across it yet. I can't search until the PU daybooks have been scanned and that will take some time. You may have noticed that Paul and Hazel are somewhat busy! I'm limited to remote working these days.
    The exisitng detailed records do cover all engines sold through a "Show Order" (SO) which might apply here.
    They are in order number sequence so it will be a lengthy and tedious search of about 5000 orders (about 12000 images) . Some of the late SOs are scattered randomly between 15 reels (c30,000 images) of normal "Works Orders" (WO). Have a you a date or date-range for this beast please?
     
  3. Skankin_giant

    Skankin_giant Well-Known Member

    I'm don't at the moment Roland. No worries on the further details, was a "have you heard of" more than anything.

    Is 6.5hp right for the PU range? I'll see if I can get any further details.

    Have narrowed it down to James Mackie & Son's Belfast but nothing more helpful.
     
    Last edited: Feb 10, 2022
  4. Skankin_giant

    Skankin_giant Well-Known Member

    Sadly the lint puller etc was scrapped year ago. 6.5hp Serial No is F9038 with a manufacture date of 1942.

    Owner would like to know if it would have run on TVO/Paraffin as it has 2 tanks, I thought this was because they were thirsty beasts. He doesn't want to have a photo in a public forum but can send you it in other comms Roland. Not the best photo probably from when it was found.
     
  5. petternut

    petternut Administrator

    AFAIK the PU range was PU2 single, and PU4 & 8 twins but Petter often sold engines to other hp. I would guess a down-rated PU8
     
  6. petternut

    petternut Administrator

    I'll have a hunt when time permits.
     
  7. Skankin_giant

    Skankin_giant Well-Known Member

    Maybe, I think I've heard of PU6 somewhere but I could be mistaken.
     
  8. petternut

    petternut Administrator

    Yes, there are a small number of drawings for a PU6. It shares a mounting footprint with a PU8 so is presumably a lower hp version or perhaps a smaller bore.
    There are probably many more PU6 drawings as they seem to have been largely made for Government use. However I am now the only volunteer indexer and my time is spent on indexing for dating requests. Its therefore unlikely those reels will ever get done. Show orders are vanishiongly rare during WW2.
     
  9. Skankin_giant

    Skankin_giant Well-Known Member

    Hi Roland, no worries. Wasn't expect miracles, was more of a way of making you aware of it if it's to be added to the Petters in preservation etc.
     
  10. petternut

    petternut Administrator

    There is no separate register so that can only be done if the records have been digitised and indexed, and if as you have done, I have been advised that an engine exists.
    I cannot and do not assume an engine exists merely because an unidentified person looks up a number.
     
  11. hourlapa

    hourlapa Administrator Staff Member

    I'm slowly indexing 61D which has a few PU drawings on, mainly SS and Brush. No PU6.
     
  12. hourlapa

    hourlapa Administrator Staff Member

    F9038 was one of 100+ engines supplied to James Mackie & Sons, (F9038 16-2-1942) under order no 4/11245. Marked in the book as PU6/8 they were shipped over a number of months under that order until at least May 42 (not gone any further) but only the first 100 are marked as PU6/8, rest just entered as PU8.
     
  13. petternut

    petternut Administrator

    I pondered the need for large quantities of top quality linen cloth from 1942. Possibly for aircraft?
    Although by then most frontline aircraft were Aluminium, many had cloth covered control surfaces and large numbers of fabric covered aircraft remained in service. Possibly someone was anticipating the building of fleets of gliders. Were any used in the north African landings ?
    PS Was it a lint piller rather than puller ?
     
  14. Skankin_giant

    Skankin_giant Well-Known Member

    Thanks Paul, much appreciated. I've asked the owner if he could measure the bore/stroke if he gets a chance. Phillip G is interested to hear if it's a 6 or a de-rated 8.

    Maybe Roland, I'm not up with the fabric manufacturing lingo.
    I wonder if they supplied de Havilland.
     
  15. petternut

    petternut Administrator

    It appears it is pulling. My kind nephew sent me this URL which makes the process clear:

    Superb and very well worth watching.
     
    Last edited: Feb 15, 2022
  16. Skankin_giant

    Skankin_giant Well-Known Member

    Evening all, some bore and stroke measurements, Seems like 3- 5/8" bore and 2-7/8" stroke.

    Excellent video Roland, funny thing I live up the road from Annsborough, well in Castlewellan, and no clue where that factory was, unless it's the one that is now a dog food factory.
     
  17. petternut

    petternut Administrator

    Bore of a PU8 is 2.953" and as far as I can see all the PU shared the same stroke.
    That is as close as I can get to a definitive answer.
     
  18. Skankin_giant

    Skankin_giant Well-Known Member

    Might have a chance to buy it.. perhaps I should give it a home just incase it's a 6...
     
  19. petternut

    petternut Administrator

    :) Did you take any engines with you?
     
  20. Skankin_giant

    Skankin_giant Well-Known Member

    Yea still got the following:
    • Sattley TA
    • Lister 2 stroke
    • Barr & Stroud WB1
    • Norman SC
    • Stuart WD (Flat Twin)
    • Robinson B4
    • 2" scale Rider Ericsson.
    • Replica Jost fan.
     
    petternut likes this.

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