Hi Kim,

It is still a steel liner/Iron piston so pretty much use the "old" break in method.

I have used a 10X4 prop, and I believe that is what is used on David's.  Without a muffler, they are pretty loud!  But running in a wet 2 they will pull most .35 sized models fairly well.  A favorite back in the old WAM "A" stunt class.

BIG Bear
RNMM/AMM

Mine wanted 30 % castor for the first few litres .

Was going nicely running in , so fitted to twin @ 23% and turned into a wet rag .
Back at the shed brewed some 30% oil fuel and straight back on song .


10% nitros good.
15%s better .
20%s best .

And made a blue and had a bit of fuel in the Nitro once . By Golly . Gives the tourque .

ONCE its run in . though .

Hi Kim,

It is still a steel liner/Iron piston so pretty much use the "old" break in method.

I have used a 10X4 prop, and I believe that is what is used on David's.  Without a muffler, they are pretty loud!  But running in a wet 2 they will pull most .35 sized models fairly well.  A favorite back in the old WAM "A" stunt class.

   I think that is probably the right prop. The first time David and I did it in modern times, it was on Ted's Ringmaster. We didn't know what prop to use, so we got a 10-5 from the on-field hobby shop. The lap times were something in the low 3 second range. And of course this was during the first round of a contest and it was the first time either of us had flown the airplane. Second round we got a 10-4 and that was a lot less crazy and seemed like slow motion even though I think it was around 4 flat. David and I got so focused on beating each other, Chris Cox and his McCoy 35 Barnstormer, I think, beat us both because at the speeds we were running, neither of us had the guts to get the intersections on the 8's exactly vertical.

     Brett

What venturi and needle valve assembly works well for a Ringmaster sized airplane?  Is stock as good as any or is there something better?  I've searched and, although there are numerous references to using it in Ringmasters, etc., I've not been able to find any comments on setup.

" I'm curious what plane you're flying with the Veco?  Weight?  Prop?  Muffled or loud? ".

By Golly , Bill . Youve seen it in pictures at least fifty Times .   ( just kidding ) .



Now were going to engaguge in some SERIOUS Name dropping , here .  

Picture above is the renouned Team Race World Champion Mr Potter , and Mr Potter Senior . overlooking & superviseing , and playing with a Camera
after doing a not to bad job of lauching all the things . Unfortunated TWO Bottles of NITRO & ONe of Methanol . Not the Two of Methanol & one of Nitro Id presumed . And even took a whiff to check . Didnt screw any of the engines , OS , Veco & Fox . though the Plugs were Black , after .
Mustve been 65 % . One should be a trifle cautious about wasteing the Nitro , Me Suspects .

ANYWAY . waas running a waisted & a unwaisted spraybar in a Std & a overbored intake , for some time . Has Std both now in both .


One Engines from Dave Bolton, He won Combat ( S.M.A.E. rules ) in N.Z. with one of the three he then had . ( Its MINE Now . ), around 76 . Other was N.i.B. K&B Veco c/l
Ive a unused third r/c with the case shorter at the intake as all the r/c are .

SO , First Flights were unmuffled .



The notorious Bryce Gibson , Combat Afficianado at No 4 ranking W.W. then , blew his airdrums , and buggered off smartly after a flight of that & the unmuffled Folkerts , ST 21/40 . Half the neigbourhood were there on pushbikes before it ( DeH ) Landed . V good for promoteing aeromuddleing . Twins .

SO , Bolton ran C.Case pressure , Big intake . ( maybe the relieved spraybar ? ) & 20 % nitro , for 90 mph in something like a Warlord . /
Here its got Big Intake , Std spaybar . others std intake, relieved spraybar . areas similar but inconsistant , ground to air settings on O% or 5 , though in warm dry weather 5 to 10 is o.k. if the barometers steady . 9 max. 1/4 turn range for useable setting . if youre lucky .
Had a good run with steady weather & regularflying . 90 % good . . . . B u  t .  .   .
But you give up & use ten if the weather & flying is irregular , or loose half the flights with sh*t settings .( and resultant foul moods & iritability )

However . ROSSI R-5 plugs & 20 % Nitro , a 20 second warm up before disconecting electricary from plugs , and 8x6 top flights , see 90 m.p.h. .
and they can hear it at the other end of the valley . A bit of a wail . Though the take off swing can catch you out . Two fast rolls & bores in inverted behind where the pilot was .-  9x4 Top Flights & richening it up , got good take offs , the schedule ( or half of it before the juice is gone . If youre lucky .) And a rich baritone note .

Going to ten gets the schedule if theres only one lap between manouvres , on 80 cc tanks . on a good day .

15 nitro you know the motors wont stop , chunteringing and hissing & banging away through the determined efforts of the gallant airman .
within a turn of something like right , on the needles .

 

Plastic intakes ( small ) 10 % , were useless - in Melbourne . ( the things flown in dozens of locations ) . Current set up is std. intakes & spaybars. The same in Ea. engine, even . which is farly usefull .
Mufflers when fitted are FOX 19/25/35 , with copper coustom straps . While these arnt ' quite ' its only half as LOUD as the Hot Set Up .

Been Donated three R-3 or R-7  Rossi plugs by Richard justic ,  the 199 mph chap ,current .60 Aus. record holder so theyll go in , for tomorrows efforts . Olde Faithfulle .

despite four wipeouts , through a tree or twoo , and moveing the plywood sheet triggered the 5 ft sq 16 mm plate glass tippiging over , hitting the outer , at the rottenish bit , 7 blowing the Lap Joints on the Spars , Right There . It worst damadge . The rotten shheet from the ' look at the pilot when you let it go ' lauch replaced then . Needed doing anyway . Amougst other things . She aint pretty , but aiborne is .  

so SUMMARISEING . it was 60 )z once . . . 55 to 70 ft lines . ( 65 calm , 60 a bit of wind , 55 blowing nicely . ) 9x4s for stunt , 8 x 6s for combat .

toothpick 10 x 5s or thereabouts probly pretty good . A drop of nitro and itll swing anything , the smaller the noiseyer .

Bought the New motor for the Muffler ( Std. Veco - so Ive two Now . But havnt used em )

For S.M.A.E. Combat , or scareing the neighbours , use 20 % , a 8x6 , the big intake ( HERe we get , needs 20 % on Suction , for a good setting )
and pressure .

Was built 2002 & still tatty , Er , Going Well. We Hope . Well see. tomorrow . & I dunno the Brew as its promised bludged fuel as the Train Gestapo dont approve of certain things .

off to think up some more big names . 

I must admit that the first model I used a Veco .19BB on was an RCM 20 Trainer for R/C.  The engine was awesome in that plane.  Flew usually about 1/2 throttle, not even needing full throttle for take off.  I could close the throttle enough to make the model hover into the wind.  Ended up throwing a rod in that engine.........

BIG Bear
RNMM/AMM