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  1. #26

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    RE: MVVS 09 diesel

    That is not good. They may have run out of stock of the 1.5 cc carb and muffler.

  2. #27

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    RE: MVVS 09 diesel

    MAYBE PE RIEVERS OR DAR ZEELON??? MARTIN

  3. #28
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    RE: MVVS 09 diesel

    That is worrisome. I just ordered them too.

    Well, maybe I can cut a curve into the muffler and it'll still fit OK.

    Club Saito #722, Sig Kadet Brotherhood #80, GlowHead Brotherhood #14,
    AMA # 928076

  4. #29

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    RE: MVVS 09 diesel

    The OS .10 Muffler comes pretty close if you are going to
    cut it to fit the MVVS. I just really love the Junior .2cc but
    both of mine have a poorly fitted contra and I cannot
    seem to beat them with my ball peen enough to make them
    tight. They don't leak but they fall down and ultimately
    travel with the piston. Strange noises that scare my friends.

    Ralph


  5. #30

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    RE: MVVS 09 diesel

    Try heating the contrapistons with a torch. it didn't take much to fix the contrapiston for an ST G20-15 a friend had over lapped.

  6. #31

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    RE: MVVS 09 diesel

    Earl

    Please post back and let us know what you get once your muffler arrives.


  7. #32
    earlwb's Avatar
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    RE: MVVS 09 diesel

    I will as soon as I get it.

    Club Saito #722, Sig Kadet Brotherhood #80, GlowHead Brotherhood #14,
    AMA # 928076

  8. #33

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    RE: MVVS 09 diesel

    Looked at OS10 TT10 PAW carbs no good AP hornet 09 a maybe if ouside diameter of insert end of carb reduced about .5mm+ enough meat on it to do it but clearance to cylinder crankcase on the edge ( clearance ) close?? martin
    The AP carb is a car type

  9. #34

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    RE: MVVS 09 diesel

    So true about carbs. This engine is hard to retrofit
    another carburetor . I kind of managed a little China
    car type carb on one but have not run it yet.
    Ralph

  10. #35
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    RE: MVVS 09 diesel

    Well that was amazingly fast for mailing to me. It is the .09 Modella MVVS muffler and it already has the arc cutout in in too.
    So I am quite satisfied that I got the correct item. Hobby Club came through for me OK.









    Club Saito #722, Sig Kadet Brotherhood #80, GlowHead Brotherhood #14,
    AMA # 928076

  11. #36

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    RE: MVVS 09 diesel

    Earl Fantastic lucky you are now set to go martin

  12. #37

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    RE: MVVS 09 diesel

    Ralph must have been unfortunate. Possibly he encountered an unknowledgable or uncaring member of sales staff at the time of placing the muffler order fro the 1.5 cc engine.

    It is good to know there is still stock of the 1.5 cc muffler. While I am not really keen on mufflers on small diesels, reality is it may not possible to fly with an unsilenced engine (even one as quiet as a small sports diesel) at many clubs.

    And, it is always good to have the silenced option.

  13. #38

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    RE: MVVS 09 diesel

    MVVS / Modela 1.5D

    19th August 2012

    Temp: 16 degrees Centigrade

    Elevation: 100 meters AMSL

    Humidity: 60 %

    ***

    First run of NIB 1.5 DFS. Silencer not installed. C/L venturi.

    Engine was stiff from congealed factory preserving oil and tightness of plain bearing.

    As received the compression adjusting screw was set in an "over compressed" setting for fuel used.

    First hand start was difficult.

    Hand re-start from cold: four choked primes, open needle valve 1/2 turn, plus 1/4 to 3/8 of a turn in on compression adjusting screw to increase compression required.

    Hand re-start from hot: one choked prime, less 1/8 screw out on compression adjusting screw to reduce compression required.

    Hot re-starts were easy. Cold re-starts required three to six vigourous flicks, but still easily accomplished.

    Engine as received was very tight. It loosened appreciably after three or so four minute runs. The plain bearing oozed a little blackish tinged oil at the prop driver for first few runs, then cleared.

    First runs were accomplished very rich and under compressed. Engine was gradually leaned out in subsequent runs, and peaked towards end of session as per Adrian Duncan's recommendations for iron and steel diesel engines.

    Engine is thoughtfully designed. Superior quality construction. NVA is excellent. It has a fine taped needle, with twin needle ratchet springs holding a knurled thimble with stubby 110 degree angled thick wire extension. Deep venturi intake. Finely machined alloy cylinder jacket. Sand cast crankcase. Porting is not typical schneurle. It appears to be a version of "vortex" porting.

    This MVVS 1.5 DFS differs from other examples I have seen. I speculate it is a very late production example. Raised surfaces on upper crankcase casting are surface skim machined to an extremely fine finish. It has a turned alimunium barstock back plate instead of black plastic backplate. Exhaust port also shows judicious well executed machining unlike other examples seen. I expect the finely machined "collar" on the upper crackcase ensures less leakage at the sealing face of the manifold of the matching silencer than may be experienced on the "as cast" finish examples.

    Maximum RPM at end of session on a Robbe Dynamic 7 x4 broad blade propeller: 11,500. Nothing special, but I was not pushing it.

    In all, I found the 1.5 cc DFS a very nice, light weight sports 1.5 cc engine. Compression and needle adjustments are not "critical". A broad range of acceptable running is available. It is powerful for a plain bearing sports diesel of it's era. Beginners may struggle to start it without experienced assistance.

    A short video of 6th run is posted at the following link:

    http://www.youtube.com/watch?v=NTenM...ature=youtu.be

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  14. #39

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    RE: MVVS 09 diesel

    Running on bench
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  15. #40

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    RE: MVVS 09 diesel

    FIERY a winner it is, perhaps Hobby Club can fix you up with a muff and RC Carby then you have it all __ good catch martin

    post note mine must be a early issue plastic backplate 1.5cc
    metal backplate 2 cc

  16. #41

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    RE: MVVS 09 diesel

    H Martin

    I have an R/C carb however due to limitations of the test stand I could not fit it.

    The only thing I disliked about the 1.5 cc engine was the ridiculous "cheese head" slotted machine screw prop retainer. It was promptly replaced with a M4 machine screw of conventional hex head pattern at a cost of a few pennies. I did need to use a couple of M4 washers as spacers though.

    The separate prop retaining screw is a good feature. If it is damaged or bent as a result of an "arrival", it is easily and inexpensively replaced. Also, a stud could be substituted if desired.

  17. #42

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    RE: MVVS 09 diesel

    FIERY ha 4mmm now I know the size will pick one up tomorrow at ace hardware here martin

  18. #43

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    RE: MVVS 09 diesel

    I have received an R/C carburettor and silencer for the MVVS 1.5 ccm diesel from Hobby Club. They still have stock.

    The Hobby Club ordering process was straight forward. There is a good feature as well. They have an on-line tracking system for any order placed over the net.
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