Hi guys, after a long lay off(actually just flat out quit ) after running my two best ships into the ground within a week just before a contest, but anyway, Im seriously thinking of going at it again (miss it) .So all I have left over is an LA46 and a NIB Stalker 61RE. I want to start with a modified Twister or Banshee for the 46,but was wondering if anyone could rework it for a nice 2-4-2. Im sorry if this has been covered before, and I am aware that people get that with their set ups,but I would rather cut to the chase if I can send it off to have it done. Thanks.

I'm with Andrew (but use a PA NV assy.). My next .46LA powered plane will be a stock .46 with a tuned pipe...a modified kit Pathfinder.

If you really gotta get your .46 reworked, call up Randy Smith.    Steve

On the LA 46, trying to get a Fox 35 style run is not really beneficial, nor is it desirable IMHO.
The LA 46 runs great right out of the box. Its light, reliable, reasonable on fuel and inexpensive. Just what you want when there is a chance you will find the ground in an unfriendly angle...

Latest news on setup,, take it out of the box, put a .272, - .275 venturi on it, with a ST or PA needle assemble THROUGH the venturi, in other words, dont use the remote needle ( this isnt a deal breaker, but if you dont use a through the venturi needle of the same size as the ST or PA needle, then you need to recalculate the venturi size) Use an APC 12.25 x 3.75 prop, 10% nitro fuel with 22 % oil, equal parts castor and synth. I would reccomend a 5 oz Uniflow tank with muffler pressure, ( it makes certain things more consistant) Needle it for 9600 to 9800 depending upon your airframe and tank setup. release it and enjoy.
Break in would be several tanks on the ground, but you will find the run " sweetens up" as it gets closer to a gallon of fuel through it
I have not ever needed to add shims, remove shims, alter ports or timing.
the only thing I noted was that one of mine needed a bit more castor to be happy. IOW it would pick up rpm noticable when I flew the square eights, and then stay at that rpm instead of coming back down. a couple ounces more castor added to the gal of fuel solved that problem.

Hello Chris,
  The article you want is called Bluer than Blue and is by Derek Piccard (Sp?). It appeared in AMI magazine and was first published in Vic Stunt. He recommends that the tops of the inlet port are filed by a few thou to angle upwards. He gives an alternative of filing slots in the piston, which align with the inlet port. All this is to get a better 4-2-4 break.
  I suppose if you must have a 4-2-4 set up, then it is worth doing this. BUT the engine runs like a sewing machine in a constant 2 stroke. This gives a super performance, much better than a 4-2-4. Why anyone would want to do this is beyond me. Please try the engine unmodified, you will really like the constant 2 stroke run. I run mine in a wet two and that works for me.

Regards,

Andrew.

The article is in ALCN 70 4 and is indeed called 'Bluer than Blue' by Derek Pickard.

Interesting to note that two shims were used in that modified engine to give an 8.5:1 compression ratio (down from 10.2:1) along with an air filter, 10% nitro fuel (up from 5%) and a 11.5X5 Bolly prop.

Chris, ACLN 70 4? Can you give us the month and year or issue number, please?

Issue September 2003 - from http://www.vicstunt.com/

Go to 'newsletters' top left then ACLN on the right, scroll down to September 2003 and click that and a pdf file should down load for you but will need Acrobat reader to view it.
(Dang good source of info on this site!)

Just Googled 'ACLN 70 4' and it was instantly useless as a search code, sorry about that!