SVEA 5R

Discussion in 'Svea No:5' started by hydro451, May 28, 2010.

  1. hydro451

    Offline
    Joined:
    Dec 17, 2008
    Messages:
    446
    A SVEA 5R possibly dating to the mid late '30's .
    It may have the #1715B RSB or it may be a #1915 RSB. It's not marked. I painted the trivet black as it was in rather rough shape. It runs beautifully, but the simmer leaves much to be desired. It may be because the pricker is "up" when stove is off. But on high or medium it's just fantastic. I have done nothing but polish the outside tank, replaced the filler cap gasket, scrubbed the caps, rinsed the super clean inside of the tank only once with kero and fired it up.
    Pump leather was dry but in perfect order ( sorry Sefa - need to use leathers sparingly ) and even the burner washer was ok, but I suspect a later replacement is in order. NRV seems to be good so far - smooth action and holding fine.

    Stove cleaned up nice - trivet scared from rust although

    1275045295-svea_5R_whole_3.jpg 1275045324-svea_5R_no_trivet.jpg 1275045393-svea_5R_tank_close_up.jpg 1275045481-svea_5R_no_5.jpg 1275045499-svea_5R_king_of_stoves.jpg 1275045516-svea_5R_script.jpg 1275045553-svea_5R_tank_top_script.jpg 1275045592-svea_5R_side_script.jpg 1275045658-svea_inner_cap_marks.jpg

    Burner has no parts number on it

    1275045687-svea__5R_unmarked_burner.jpg


    Outer cap is marked : SPECIAL SWEDISH HEAT RESISTINT STEEL No. 839 S

    1275045711-svea_outer_cap_marks.jpg

    Burner SVEA mark

    1275045733-svea_burner_svea_mark.jpg

    Note orange dot

    1275045763-svea_spindle_knob_close_up.jpg

    First flame - outside day light , so a little washed out, but flame is true blue. I had no meths to pre-heat so tried some coleman fuel and under pre-heated and it flooded, but finally vaporised to a nice blue flame - absolutlely no yellow, perfect . I was amazed at the cleaness of the flame. Sooty outer cap - that's all

    1275046222-svea_5R_first_flame.jpg


    More flame shots

    1275045812-svea_5R_flame_high_profile_1.jpg 1275045867-svea_5R_flame_high_profile_3.jpg 1275045812-svea_5R_flame_high_profile_1.jpg 1275045890-svea_5R_flame_high_close_up_2.jpg

    Simmer shot - best it will do without going all yellow

    1275045911-svea_5R_flame_simmer_close_up.jpg

    If anybody knows how to determine whether it's a
    #1715B RSB or #1915 RSB, please help.

    Tom
     
    Last edited by a moderator: Jun 27, 2015
  2. itchy

    Offline
    Joined:
    Feb 10, 2009
    Messages:
    3,186
    Nice one Tom.

    Interesting bit about simmering and the cleaning needle being out when off (like a Coleman), but I assume you can simmer by reducing pressure if you had to.
     
  3. BernieDawg Banned

    Offline
    Joined:
    Feb 23, 2008
    Messages:
    1,656
    Hi Tom

    If the cleaning needle extends out of the orifice when the valve is closed, then I think you have a 1715. It looks like that to me, but my eyes are in "bad focus" mode this morning.

    Best,
    Gary
     
  4. hydro451

    Offline
    Joined:
    Dec 17, 2008
    Messages:
    446
    Hi All,

    Thanks itchy , yes it sure can , but haven't tried that yet , but defeats the purpose of the RSB kinda' , but good idea !

    Gary, thanks for the input on the #1715 burner. I see your SVEA #1915's are marked as such , but do the #1915's have the pricker "up" when valve is closed ?

    It's hard to determine from the CCS literature , as the catalogues show a 1915 and 1715 for this date stove , I think , but not 100% sure.

    Tom
     
  5. threedots New Zealand

    Offline
    Joined:
    Sep 2, 2006
    Messages:
    779
    Hello All.
    I have just got hold of a SVEA Nr.5 with a SVEA 1715 burner on it. 8)

    :-k I believe(I have not dissasembled the burner)that the pricker needle holder has the regulating spindle pass through it, rather than the needle rack sit on either the right(usually) or left hand side of the regulating spindle pinion.
    Looking from above the burner, the needle cylinder has the spindle pass through the center of it.

    The regulating spindle will rotate clockwise or anti-clockwise forever(it does not stop rotating in either direction to close a valve), actuating the needle with a cam on the spindle itself.
    The spindle does not have a fine thread,the usual pointed end to regulate the fuel flow or a pinion gear for the needle rack.
    The needle itself regulates the fuel flow through the jet hole as it goes up or down - from totally OFF to full flow through to OFF again etc...(clockwise or anti-clockwise). Hope this helps. Cheers
     
  6. hydro451

    Offline
    Joined:
    Dec 17, 2008
    Messages:
    446
    Hi All,

    Threedots , thanks so much for the helpful info. Very interesting . I have not gotten that far yet with this stove. It runs so good now I didn't have to fettle the insides, but as time goes by I'll eventually break it down and get to the guts of the burner.

    Meantime, I don't suppose you could post some pics of your #1715 burner and it's inner workings ? Sure would be nice and very informative, thanks again

    Do the #1915 RSB's have this same set-up ?

    Tom
     
  7. threedots New Zealand

    Offline
    Joined:
    Sep 2, 2006
    Messages:
    779
    Hello Tom.

    The SVEA 1915 burners are the same/similar as the standard regulated silent burners that you find on Optimus, Primus etc...They are totally different to the SVEA 1715 burners as they use a rack and pinion system to activate the cleaning needle.

    I've read somewhere that the SVEA 1915 burners are excellent performers.
    They usually have 1915 stamped into the top of the burner itself but I am not sure about that.

    As for photographs of the SVEA 1715 burner-I will get some done as soon as possible. The stove itself is currently filled with meths for 24hrs to disolve any shellac inside. It also has a slight leak at the air bleed vent which I shall repair then get photographs of the SVEA 1715 silent burner in action. I won't disassemble the burner as it doesn't require any work, except for a flush and a new fuel jet. Also I do not wish to disturb the graphite packing seal. Cheers
     
  8. threedots New Zealand

    Offline
    Joined:
    Sep 2, 2006
    Messages:
    779
    Pictures of the SVEA #1715 silent regulated burner on the SVEA No:5. I don't know if it was an original combination or not.
    More pictures showing it going will follow soon.

    1275744049-SVEA_No_opt.jpg 1275744071-SVEA_No_opt2.jpg 1275744088-SVEA_No_opt3.jpg 1275744122-SVEA_No_opt4.jpg 1275744166-SVEA_No_opt5.jpg 1275744185-SVEA_No_opt6.jpg 1275744208-SVEA_No_opt7.jpg
     
    Last edited by a moderator: Jun 27, 2015
  9. threedots New Zealand

    Offline
    Joined:
    Sep 2, 2006
    Messages:
    779
    Flame shots. Not bad as the cooker has only been flushed through and the original jet is worn a little. Very easily adjusted from simmer-hot-off in only a 180 degree turn to complete the cycle. The SVEA burner caps are borrowed from my SVEA 175-with SVEA #1915 burners.
    Once I have cleaned up the complete stove and replaced the worn jet(the flame has yellowing when simmering), I will place photos in the stove reference gallery showing it. Cheers


    1275787626-SVEA_No_opt8.jpg 1275787645-SVEA_No_opt9.jpg 1275787669-SVEA_No_opt10.jpg
     
    Last edited by a moderator: Jun 27, 2015
  10. hydro451

    Offline
    Joined:
    Dec 17, 2008
    Messages:
    446
    Hi threedots, thanks for all the work !!

    Very nice stove and your flame shots are excellent. :lol: :clap: :mrgreen: I suspect your stove pre-dates mine. :mrgreen:


    This is getting more interesting and fascinating all the time :)

    First off we can see that the spindle control knobs are different on mine and yours. Mine is bakelite, yours wire. Next if we look at the actual attachment of the spindle control to the burner itself , we see a difference.

    Next is the packing nut and spindle housing. On mine the burner has a "male" thread end on the spindle housing and the packing nut is "female" threaded" . This is just the opposite of your 1715 , which has "female" threaded spindle housing and "male" threaded packing nut . This is the same set-up on BernieDawg's SVEA #1915 RSB's

    internal link here

    https://classiccampstoves.com/threads/8165


    Now if we look at the burner down the spindle we see that on your stove the fuel tube and the pricker housing sit directly on top of the spindle housing. On mine the pricker housing and the fuel tube sit to the left of the spindle housing. But if you look at BernieDawgs' SVEA #1915's , you'll notice that the pricker housing and fuel tube sit to the right of the spindle housing. Very interesting :) Three different burner designs.

    I'm still not sure which one I have , but am leaning toward a 1915 as the catalogues show the 1715B with the fuel tube and pricker tube sitting a top the spindle housing. But mine is un-marked and has he different packing nut /spindle set-up than both your 1715 and BD's 1915's

    Also I think , but am not sure but it looks like my burner skirt may be a little higher , hence the slight difference in flame pattern.

    Well , I'm basically stumped , three different burner designs and only two part numbers ??? Fascinating for sure

    Tom
     
    Last edited by a moderator: Jul 2, 2015
  11. threedots New Zealand

    Offline
    Joined:
    Sep 2, 2006
    Messages:
    779
    Hello again Tom.
    An interesting read. It sounds like your burner self pricks the jet when you turn yours off.

    My stove might be older but the #1715 burner is 1930's I think. :-k
    I've had the stove soaking in a bucket of methylated spirits and light tool marks can now be found on the burner stem and the burner itself, so it looks like a replacement to the original burner that would have been a non-regulated silent one I believe.

    The stove wiffed slightly of kero while going so I think the burner/stem seal is leaking and needs replacing.
    Cheers, John