The Merco 49 on 15 or 20 % Nitro , once run in , will fly 70 Oz on at 70 Ft. .018 in a deep steady 4 stroke , on a 12 x 6 Master Wood .
Theyre said to be set up for No Nitro , or Low. So mmay need a few head gaskets . Needs a hour to free off, from new .
The big ugly S Tigre Silent Muffler dosnt drop the power , but'll snap the 6 B.A. exhaust stack bolts in hard squares .
Theyre a bit weighty . Van Den Haut ? etc used in the Olympus 7 others , the 49 ( think they thought that was big enough )
in the World Champs in the 70s .
My 49 was the one with the long backplate bolt lugs under through the case . some are short. early had No Muffler Lugs .
As Said, muffler bolts are 6 B.A. , British Thread .
A Correct Screwdriver fits the Head Bolts Correctly .
Holt very securely to free the Ex Stack Bolt & other two of that Tri spaced LONG set, they go down to the Case ,
other three just to fin flange .
The 49 Measured 130 Ex 1110 trans , timing .
The 61 I have is higher timed .
And needs a piston ring !ANYONE Got a Merco 61 Piston Ring ; PLEASE .
The INTAKE , Stock C/L , is like a NASCAR Flow Trumpet . or a Nelson 40 .
Thus :
Think youd find it usefull , might wanna loose 1/2 inch on the nose, during build.
Tom Dixon was the Merco Man in the U.S. ,
You can purloin appropriate stickers from the Barton site, Maybe Google Pics .
Ratshit military ones had no head fins . Target Drone .
Topic: Merco 61 (Read 1505 times)