Carb for S-3000  
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Carb for S-3000 - 6/15/2007 3:01:37 PM   
crtmmac



Posts: 102
Joined: 6/17/2002
From: Bolton, MA, USA
Status: offline 		Hi I have a Super Tigre 3000. I have been told that the 2300 runs better with an OS carb (7-G). Is there a better carb for the 3000?

thanks
/colin
       Post #: 1

RE: Carb for S-3000 - 6/15/2007 4:20:58 PM   
Trollmaster



Posts: 375
Joined: 4/16/2007
From: USA, USA
Status: offline 		Thas a 7d. Moki, Jett and ASP also have carbs that will fit

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RE: Carb for S-3000 - 6/15/2007 8:44:36 PM   
crtmmac



Posts: 102
Joined: 6/17/2002
From: Bolton, MA, USA
Status: offline 		You are right. 7d. Good catch. Do you know if the 7d works on the S-3000?

Thx
/colin

(in reply to Trollmaster)
       Post #: 3

RE: Carb for S-3000 - 6/15/2007 11:19:55 PM   
Ed_Moorman



Posts: 3647
Joined: 1/5/2002
From: Shalimar, FL, USA
Status: offline 		Back in the 1990s I ran several ST3000s. Thay had, as I recall, 3 different carbs, maybe more.

Bear in mind, the ST 3000 gets its max hp at 7900 rpm, so propping for greater rpm is a waste. You need a large prop that turns about 7000-7200 on the ground. I typically ran an 18-10.

The original carb was from the ST .61. It has a fairly small intake, but the engine ran well with it. You did need a split sleeve to shim the throat of the 3000 down to the size of the carb's base.

The second carb had a bigger intake, but ran crappy. This is when all of us who ran the engine went to different carbs. The first chioce was the OS 7D. It had a large throat and was easy to adjust. The down side was the price, which was around $40 back then. You still needed the split sleeve to make the carb fit.

We soon discovered a second carb that ran well, one off an ASP 1.08. We used to get them for $26. They, too, needed the sleeve to fit. This carb ran great and I typically used it on several ST3000s and 2500s, keeping my lone OS 7D in reserve. The Magnum 1.08 carb is the same carb.

I had a friend from another city who never could get his 3000 running well. No one in his club could get it to run through a flight. We met at a meet and I pulled my engine, installed his, then installed my ASP 1.08 carb without changing the needles. I flew his engine the rest of the 2-day IMAA meet and 1-flip started 8 times. Never had to touch the needles. I kept telling his to spend the $26 for the carb. I think he fimally bought a G-38 or US 40 gas engine.

The final ST3000 carb I know about was on the 3000K, the last model to come out before the 3250. This had a new carb and a very large throat for more power. It had a larger diameter base so you didn't need the split sleeve. I never owned one, but I saw some that ran OK.

I don't think the split sleeves are still available. The last time I bought one, they were listed as a ST2500 part since the 3000K didn't use one. If I had to run a 3000 now, I would order a Magnum 1.08 carb and use some aluminum tape from Ace Hardware to make up the diameter. I would use hi-temp silicone to seal around it to insure there was no air leak. I guess you could also use multiple brass tubes to shim the base of the carb.

_____________________________

Ed Moorman, AMA 553, KD4QBM, Revver Bro #156
R/C Report Magazine, Fun Aerobatics Column

(in reply to crtmmac)
       Post #: 4

RE: Carb for S-3000 - 6/16/2007 6:51:55 AM   
Kweasel


 

Posts: 1070
Joined: 1/7/2004
From: fort worth, TX, USA
Status: offline 		The latest 2300 carb works well.

(in reply to Ed_Moorman)
       Post #: 5

RE: Carb for S-3000 - 6/16/2007 3:29:19 PM   
Trollmaster



Posts: 375
Joined: 4/16/2007
From: USA, USA
Status: offline 		If you "dare", go check out the "ST 2300 testing and Experimenting thread here somewhere. I recall carb changes coming up in it and you could relate it to yours .

http://www.rcuniverse.com/forum/m_3836695/mpage_1/key_2300%2Ctesting/tm.htm

< Message edited by Trollmaster -- 6/16/2007 3:30:40 PM >

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300 Posts! Time to change my name again!

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       Post #: 6

RE: Carb for S-3000 - 6/17/2007 3:25:29 AM   
L48



Posts: 162
Joined: 1/23/2002
From: Indianapolis, IN, USA
Status: offline 		You can change carbs if you want, but if you go by the Super Tigre 2300 instructions it will run fine with it's own carb. Don't run alot of nitro, I run mine with 0% nitro and it runs the same as it did on 10% nitro and it uses less fuel. You may have to adjust the mid range by turning the spray bar a little.
I broke mine in on 10% because it was all I had then got 0% fuel re-adjusted the needles, had to go in the lean direction. Running a 17/8 prop, seems to be a good match.

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RE: Carb for S-3000 - 5/3/2008 4:37:35 AM   
tony0707


 

Posts: 51
Joined: 7/7/2006
From: inverness, FL, USA
Status: offline 		hi i run an OS 1.08 7D carb needle valve is on the carb- ( not at the back plate like some) -fits perfectly into the s/t engine (no sleeve required )so i think- it must be the s/t 3000k that i have- the stock carb ran real good- but i picked up 300 RPMS -with the OS carb. the ASP 75 -91 and 1.08 are all the same carb and will also fit -not requiring a sleeve-. i run the same OS 1.08 carb in my ASP 75- also with very improved performance. at all speeds (personnely i think os carbs are the state of the art carb -they perform better for longer than other brands) i run 15 % omega with the head gasket removed -and the head-lapped with bon ami and oil (use a post card in the cylinder-to check deck clearence will not work on all engines -but most -this is right from CLARENCE LLEE -one of the glo engine master enginneers )-increases the compression and power- nicely- no other issues- but greater performance- old glo hot rod tick- done to all my engines for years- from my 46's to my 1.08 's try it you will like it!!!!!! fuel consumption is reduced at the same time as the piston chamber is slightly reduced- in size -like a milling the head effect. engine sounds crisper and transition is always real good i have the best running engines at my field i am known as the ENGINE GUY there TEST PILOT FOR 22 years HAPPY LANDINGS!!!!!===tony 0707===

(in reply to L48)
       Post #: 8

RE: Carb for S-3000 - 5/4/2008 12:36:30 AM   
MOTORMAN37



Posts: 2044
Joined: 10/26/2002
From: CLINTONVILLE, WI, USA
Status: offline 		My 3000 was also the old version, and I ran an OS 7D in it with no adapter needed.

(in reply to tony0707)
       Post #: 9

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