- .30 VG rotostart?
- 30 VG "safe" temps...
- OS 91 Surpass header
- OS FSa 56 problem
- Cooling head for .30VG
- O.S. 40LA needle valve + airbleed screw setting.
- O.S. FS-91 II Surpass w/Pump fuel tank location?
- os.18cvrx w/11j rotary carb
- os 40la screw help
- O.S 1.6fx new ring
- .91 FX + Macs Tuned Pipe Questions
- OS18TZ standard shaft with rot carb ?
- OS 15 FP RPM
- "Locked Up": Drive Hub and Woodruff Key
- OS 200 4/C question
- FSa-56 Inverted mounting
- FSa-56 fuel
- OS .21RG non pullstart
- MOVED: cordless starter
- O.S. 55AX Inverted Mount Problems
- o.s 55ax
- os 70 surpass 2 drive washer
- OS VSpec #13895
- OS .55 AX Funfly
- MOVED: O.S. .81 FS-A
- O.S. 160 Sleeve repair Question???????
- O.S 52 surpass carb adjustment
- Pattern prop for new OS 91FX
- FS120 Series II pumped - fuel leak at regulator
- .26FS Questions
- O.S. 61VR-M Connecting rod
- which 3 blade prop for 91fx?
- OS 25 FSR Backplate and gasket
- OS 46SF P VS 46FX
- OS 75AX Pitts style muffler questions
- O.S. 21 V-Spec
- 91 fx carb replacement
- 91FX prop rpm
- OS 50SX-H graduation markings ??
- Factory slide carb settings for OS Max 12CV
- OS 61fx corrosion
- problems with .46 FX H SOLVED!
- OS 91 FS surpass
- OS FT-120 II - ideal rpm
- ft160 low compression
- OS 1.20 Pumped Motor Mount
- Alternate OS break-in procedure?
- Correct spec 18TZ-X
- Advice on maintenance of OS
- OS 15CV-R and 18CV-R take the same header?
- Air bleed screw for Max-H 40
- 25fx
- Ring for old OS50 Max
- OS.46 FXI needle valve
- Help with An OS.46SF-P
- Glo plugs for older OS engines.
- 40 LA Question
- Fuel line connections on 160 twin?
- OS .25 FX
- .46 FXi and .46AX
- MOVED: Just ordered the os 75 ax
- O.S. FS-90 Carb
- OS .61 FX break in prop
- OS 18tm meter valve problem
- AX55 After market muffler
- O.S. FS-26S-C II 4-Stroke cam bearings
- OS 140 RX rear exhaust gasket
- OS 46 AX
- os fs 40 surpass 4 stroke engine parts
- o.s 21tm
- I need the part # for the 10E-R carburetor for my .12 cv-r engine?
- Gasket material for OS engines
- OS 4 stroke runs best upright or inverted?
- FS-91SII Fuel doesn't flow to carb
- OS 120 Surpass - Pump or no pump?
- TIMING MARKS IL 300?
- OS FT-120 Gemini engine
- lube for os 2stroke engines
- OS-40LA idle problem
- .50 SX Low on power
- Removing camshaft bearings?
- OS91FX+TUNNED PIPE
- need help tuning a os max cv-r
- OS FS 120 WRIST PIN REMOVAL
- How do you remove OS .30 VG rear bearing?
- OS .46 support.
- OS 91FX Head Gasket Leak?
- Os 46ax Muffler problem
- 15CVR and 18CVR carbs interchangable?
- OS vz-m WONT STAY RUNINNG
- do the OS FS engines come with any tools?
- O.S. 30 FS Surpass Ringed Engine
- intake stack for OS carbs?
- OS .30 VG symptoms
- High end and low end for .70 Surpass II
- OS.91SX-H C SPEC PS- VIPER
- OS 21VZ-B V-Spec-T HELP
- OS 46 SF ABC
- OS 55AX Carb loosening
- .12tz carb restrictor/ break in on crt.5
- 2 O.S. engines, same problem
- OS FT 160 Twin Cam Timing
- Problem running .12tz (5)...help pls..
- Chart Method to find years of manufacture- Help
- The elusive 75AX Ringed engine....
- Info on my OS 70 Surpass engine?
- OS Max 12TZ Tuned
- Breaking in OS 1.20 AX for pusher config
- New 4-Stroke What Fuel?
- idling speed
- Glow plugs burnt out
- os
- OS 30VG cutting off
- o.s 21tm
- Sirius collector ring installation problem
- What happen to the OS 70 Surpass II
- RE: 32sx piston and conrod
- RE: 32sx piston and conrod
- OS 70 sz-h for airplane use
- Max 12TZ(P) T3 Temperature
- 46 AX Head shim
- .18cv-r cooling head
- OS 91 SURPASS
- O.S. 1.20 AX Remote Needle Valve ??
- .12CV-X Question
- Rerouting exhaust on OS 40 FS
- .91FX tuned pipe?
- Is there an AX on the way between the .75 and 1.20
- FS 200
- OS-140 EFI Question
- 1.60fx
- 0.12 TR with 0.12TZ Turbo Head
- OS46AXABL
- OS 160 Twin
- OS MAX 40-H - Worth to restore?
- OS FS-120 Two-Cover Valve Lash
- FS 120 Supercharged HELP
- OS 77 VRDF
- What engine to use
- just delete this.
- os 18tm getting hot
- OS 0.12 TR @ 0.15 Turbo Head
- 3 blade prop &Tank configuration - FS 91
- AX46 Muffler Gasket
- pressure tube length
- String engine
- FS90 Overhaul Help
- Fuel for V-spec
- Hanno RE 61 replacement
- What Pipe for the OS 160
- OS 160 Gemini Carb Differences
- FT-120 Carb
- os 46ax rear bearing
- O.S. .70 Surpass Valve Timing
- MOVED: how to get CAD model for the OS engines
- 160 FX Midrange
- NItro MIxture, Timing, and Head Shims
- All my engines
- OS 50sx
- 46FX vs 55AX
- discontinued
- Duratrax LR3 in 18TZ.
- Re: OS 160 Twin 4 Stroke..
- OS 18 CVR break-in
- os 120 pump ticking noise
- .12 tz
- SF or FSR ?
- os 160 twin tank vent
- OS 160 Twin
- 25fx and 32sx exhaust port bolt pattern
- Inverted OS 91fs
- OS 55AX wont stay running
- break in the speed.
- OS FS 70 Rocker cover question
- Is my FX .61 casing toast?
- Fuel suggestion for OS engines
- leaky 46AX muffler
- OS 70 Bearing replacement
- O.S .46FXi cuts out ONLY while in the air
- O.S. .18 CV-R Starter
- V-Spec Speed Starting Problems..
- Fuel consumption 70 Surpass vs 46ax
- Aerobatic Fuel Tank Set Up
- OS 120 FS -E Fuel lines?
- O.S. FS-120 III Surpass Pumped
- OS 91 fuel inlet question
- making sense of horse power
- Thrust OS.40 engine
- will 7M carb work for the 61SF series engines?
- What Engine to use ???
- OS 90FS
- OZ TZ .12 crank?
- OS.91 4-stroke engine help needed
- OS 50SX won't run over mid throttle
- .91 OS engine question... how many turns
- OS 120 FS -E Strip Down
- 60 FSR vs 61 FSR crankcase
- Piston ring for os max-h 60
- CZ
- Breaking In FL-70
- Gemini 120 idle problem
- Customer loyalty and OS parts supply
- OS 200u Fuel consumation
- OS 91FX trouble...
- OS 46 AX break-in
- OS TZ .12
- .25Fx question
- OS 160FX is this normal?
- 61 FSR-VF Cylinder Sleeve
- .30VG stalls on big landings??
- OS 18 CV-RX one-way bearing slip
- 45 fsr
- LA engines being replaced?
- OS 52 FS RPM
- OS 91 Surpass Starting Trouble
- I have a problem with the OS forum
- head gasket on a os 60Sf
- OS 91FX vs 75AX
- O.S. FS .70S Run Problem
- 744 muffler alternatives
- How does this engine look:
- OS 70 Ultimate Pump parts
- MOVED: tach readings for 18x6 simitar wood prop on os 1.6 with bisson muffler
- OS 60 FP engine vibration????
- test
- OS FS-200S-P
- OS 91FX - New HS Needle Valve - Where to start?
- Hey Bax.
- FS-200U fuel tubing size
- FS-200U pitts style muffler
- MOVED: Should I be adjusting my Perry VP30?
- MOVED: OS160FX w/VP-30 Perry Pump
- OS 91 II Surpass Muffler
- Help for os max S35 R/C
- wrong messages pls delete this
- OS FS-200S Pump
- 46 LA Dead sticks
- Prop size for OS 108 FSR
- OS56a
- H.P.rating fs-91
- OS 200 adjustments????
- OS engine torque curves
- please help me tune this
- vaporlock 18tm
- 40 surpass air bleed adjust
- max .21tm specs
- OS FSA 56
- FX61 and glow plugs
- (SPECIAL EDITION)
- motor troubles