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General control line discussion => Open Forum => Topic started by: Ron Cribbs on August 16, 2017, 01:15:52 AM
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Guys, looking to source a couple ST stunt .35's
There seems to be some confusion out there as to which is is a stunt version and which is a combat version. I am assuming the C21/35 is the stunt and the G21/35 is the combat version. Is this correct?
I know the baffle is a dead giveaway for the stunt, but it's hard to tell from pictures. So are all C21/35's stunt and all G21's combat? I see a lot of engines up for sale claiming stunt with a G on the case and vice versa for the C's
Any insight would be most appreciated.
Ron
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Not quite so.
The Super Tigre C35 is a plain bearing design. They came with stunt timing and combat timing. There were also Perry Directional Ported (PDP) versions. The G21/35 is a ball bearing design. They also came in different states of tune as well as being set up for suction or pressure, front intake, rear intake, etc.
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The plain bearing model came in Combat and Stunt models. The combat had the same porting as the G21, the stunt model used a baffle piston and standard cyllinder porting.
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The plain bearing model came in Combat and Stunt models. The combat had the same porting as the G21, the stunt model used a baffle piston and standard cyllinder porting.
The difference between the plain bearing combat vs Stunt version, was the Piston. sleeve and head, The piston, of course has a baffle on it and the head is a different shape with a baffle clearance slot milled into it I have seen PDP combat versions, but I personally never saw a PDP stunt version
Randy
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Here is a couple of pics of the two ST.35 versions this are C35.I just bought another one in hope that is a stunt version.
Juan
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Brian Gardner did some ABC ' Stunt ' 35 Super Tigre piston liners .
They go in the 21/35 Ball Bearing too . . . just have to take a disc grinder to the head for the baffle slot . S?P
Tho I think he had heads done too .
I tried a 35C ( Combat ) and a 21/35 in the olde Phantom 52 span Magnum 25 / OS 25 sucker . FSR BB 25 did maybe 10 minutes ,
21/35 did 7 minutes odd , and 35 C , still tight in the shaft , did around 5 min - on the same tank full . Thats the ' flat top ' 35 C .
The 21/35s came with a Big & a Little ( 9 mm & 3.2 mm Venturie ) The 21/35 unmuffled on a 9 x 6 theee blade sounded nice &
meanaceing unmuffled - in a damp steady 2 stroke .
The BIG Problem >:( if it is one , is the ' Flat top ' piston set up has marginal ' sub piston induction ' right across under the piston
at T.D.C. ,
said to contaminate the case charge Muffled , & reduce Output discernably .
So the A B C set up is the easy answer . Tho I think most C-35-S were eaerly ' Hard Liner ' and last forever . Before the Liners were less hardened for easier Break In . A bit like the Rings in all but Early Chinese STs were less hardened - were told - for easier / quicker Break In .
Reports from 21/35 Users of the Stunt A.B.C. set up appear favourable . But Weight'd be similar to the 21/46 . So where does that leave you.
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Of Course , the most important Thing , is to have the RIGHT STICKERS .
(http://controlline.org.uk/phpBB2/userpix/98_super_tigre_decal_late_60s_1.jpg)
(http://controlline.org.uk/phpBB2/userpix/98_st_decalr3small_1.jpg)
(http://controlline.org.uk/phpBB2/files/supertigredecalr2r800_112.jpg)
colours above need darkening considerably .
(http://controlline.org.uk/phpBB2/userpix/98_super_tigre_decal_late_60s000001r_1.jpg)
Anyone does some of these , theyd better send me some .