Good morning,
among the old papers I found the instruction sheet of the old Super Tiger '60 -'70 (unfortunately in Italian).

Fuel to break in (No.1): 1 part oil - 2.5 part alcohol (28.5% all castor - 71.5% methanol).
Fuel for competition  : No. 1 + 10% nitro (doses become: oil 25.9% - 65.0% methanol - nitro  9.1% approximately )
Propeller to break in  : 11x6
Stunt Propeller         : 9x6 - 10x6

There is no indication for the type of plug.
At the time the engines were supplied with the "STD" plug , this was LONG REACH.
I think that a hot plug can do the job.

I hope this helps.

Regards, Massimo

Humph .

" C 21/35 "   .

Theres a 21 /35 . Found a olde instruction thingo refering to the ' V ' on the side as ' Victory ' ,

whereas a C 35 is plain bearing , with a big ' C ' on the side .

ANYWAY , keep it cool . short bursts initially .
all castor , maybe 30 % for a while - then 25 .

The 21/35s often came with Two Intakes Massive ( 9 mm ) & little ( about 3 mm ) .

The C had a 21/35 liner unless it was an ' S ' ( Stunt ) which has a Balle Piston & matching slot in the head .

Plug & fuel would depend on use . Akrobatics or deadly dog fights .  

This engine has some time on it and will power a new scratch built  silk & dope Voodoo. A fun diversion from stunt. A friend gifted it to me and I promised to give it a mount.
I aspired to own a Tigre as a kid, it was all Foxes for me. People wonder why I don't use the G version.
 Weight. Don't care if it isn't the fastest.

Hi Frank,
    The Super Tigre 35 engine you have is what I used to win the 1966 Nats. I called it the G20 Series which were bushing engines, and the G21 were dual Ball bearings. The G20 C/L Combat engine I used would out run most all the G21 engines if tested on the same plane. There are two basic reasons why. The bushing engine has higher crankcase compression because there is no increase in crankcase volume because of open ball bearing. Bushing engine runs on light film of oil, not spinning the balls and bearing retainer like G21. There is a few other modifications that will help. I ran Fox Missile Mist in my engine.

       Randy Dailey

    PS: This engine will knock the Dog out of your fingers, wear heavy leather gloves when starting!

Frank,
  I got down a box of 20 or so super tigre engines from my attic. Everything from .15 to .46 , front and rear rotor, Ringed, Lapped, ABC, you name it. Almost all engines are in factory box's with the paperwork.  I have found the instructions dated 1963 that gives you the info about fuel and even the parts lists in English. I will try to scan them and post these on this web within a week. I have looked, and found that what I remembered as a G20 .35 engine, is shown as the S.T. 35C engine, the bushing engine in question.  I gave my S.T 35C to my Brother in-law in the early 1970's when I stopped flying. I have texted him today hoping he can find it and send it back to me. I want to compare the crankshaft timing between the S.T. 35C and the G21 35. I am sure I changed that on my S.T., but I have already gotten two things wrong by memory already.

   Thanks for your reply, Randy