View Full Version : O.S. Engines Support



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  1. OS 46FX Liner problems
  2. FF-240 In need of Manual?
  3. OS FS 120S SP Supercharged
  4. Looking for info on this .20
  5. FS-120 III w/pump silencer
  6. Questions for OS 120 Surpass III
  7. FS 120 pump output
  8. old os 15 max idle prob.
  9. OS 46 FX torque Curve
  10. O.S. 61 max sf
  11. Quick ? on four strokes
  12. OS 120 Thrust
  13. Set Screws in the High Speed Needle
  14. Is it worth fixing an old OS20??
  15. Frustration with 91FX
  16. Need Tuning Help OS MAX CV-X .15
  17. OS 25LA cylinder
  18. what series os 120 surpass
  19. older os120 surpass w/pump
  20. Os 1.40rx ?
  21. 46FX and 32SX break-in : Manuals says 4 cycle them / AmCross says that's a mistake???
  22. OS FT120 exhaust pipes
  23. OS .52 4 stroke
  24. Pump for OS 1.60FX?
  25. Os La 46 Muffler Extention...help!!!!
  26. Os .10 Fp
  27. Metric threads
  28. dual plug head for 1.40 RX
  29. OS .91 FS valve spring collapsed
  30. How to tell if V engine is really DF +
  31. Old OS questions
  32. OS 46 FX Mounting orientation and exaust question
  33. will it fit
  34. FS91 II w/pump question.
  35. O.S. really needs to make a .75 2 Stroke
  36. engine questions?
  37. Os 48 Surpass
  38. Tank pressure with OS160FT
  39. Help with identification of old OS .25 engine
  40. bearings for OS 25FSR + 25F
  41. 13x8 Master Air Screw 3-blade prop for FS91 II
  42. Looking for OS 40SF ABC Specs
  43. OS .46 Idle Mixture
  44. O.s. 65 La
  45. Adapter for flex exhaust
  46. Os .91fx Abc???
  47. Questions 140rx
  48. OS FS 120 Non Surpass
  49. Relocating the crankcase breather on my OLD FS-40...
  50. OS SF 61 carb
  51. Os 10 Fp
  52. OS FT-160 twin
  53. os 160 tuned pipe
  54. OS 50SX-H Ring
  55. OS 1.40RX help
  56. OS .46FX not running well. Outside temp the problem?
  57. Does Slimline make Pitts Muffler W/Smoke for OS 160
  58. Os Max 40 Sr
  59. OS 90 / 91 FS bearing replacement proc.
  60. ? about OS 40LA
  61. OS91 4/c backfiring on each flip to start
  62. os 91 'c' spec heli engine
  63. os .35 help needed
  64. Service question
  65. Os 160
  66. Need Piston Ring for OS 160FX
  67. OS 25 quits
  68. .50 SX Ring engine
  69. FS 91 V FS 91 pumped
  70. Need help with fuel for O.S. 91 Surpass
  71. 46 FX Different pistons?
  72. OS 91 Surpass I
  73. is this OS 120 surpass I -sp running?
  74. Low end needle drift possible ?
  75. OS 91 4 stroke bearings.
  76. Os 140 Fi
  77. OS 91 4 Stroke Carb Settings
  78. Trying to find a rear bearing for 46fx...ARRRGH!!
  79. OS .90 FSR Specs/Manual
  80. OS 7L carb adjustment
  81. Clockwise engine
  82. OS .25fx funny noise
  83. O.s.91 4stroke
  84. Another 120 Question
  85. Futaba FP-T7UAP PCM/PPM
  86. OS 50 Reviews
  87. Original 120FS engine
  88. compression ratio for os 46 fx ?
  89. 61FX rpm on ground
  90. problems with my new os 70, 4 stroke
  91. 61?
  92. 91 FX Question
  93. FS-91SII-P Muffler?
  94. Os Ft 1.20
  95. frozen barrels on #21 carbs
  96. os .61fx modification
  97. OS 120 pumped won't run
  98. carburetor body
  99. FS-30 Surpass weight
  100. 46FX runnning a 3-Blade Prop
  101. OS .91-VR Ducted Fan
  102. Os Ft160
  103. O.S. 91fx
  104. O.S. 50 SX carb
  105. FS-120 Surpass II pumped
  106. OS 70 Broken valve spring
  107. Os 160
  108. Os .61fx
  109. OS warranty and fuel Q.
  110. OS Max .10 Starting
  111. Os .91 Fx
  112. disc. engine
  113. OS 91 FS w/pump
  114. OS 1.60 crankcase tap
  115. 120 surpass W/pump
  116. OS Carb on TT Pro 46
  117. OS 120 Surpass
  118. Cline and Associates Regulators
  119. OS 90 4 stroke engine
  120. Os 61 Rf-p
  121. Schneurle porting
  122. OS 90FS Manual
  123. OS .46SF parts
  124. OS 160 junk???
  125. OS Max 30
  126. 46 max idle
  127. New OS 46FX Peeling Question
  128. 40 LA Changes
  129. Surpass 70MKII Inverted
  130. Upside down?
  131. O.S. 26 Four Stroke
  132. Engine Spec
  133. max rpm for 61fx
  134. #21 Carbs
  135. Dirt Damage
  136. Leaks
  137. os 46 fx max HELP
  138. OS-52 four stroke
  139. OS 160FX Stock or Pitts Muffler
  140. Fx 160 in G202 GP
  141. Inverted OS 25 fx (4 engines, B-17)
  142. OS 120 Surpass II
  143. Os .35 FP--need a head gasket.
  144. Os 61 Sf
  145. Tower muffler for 46FX
  146. Os50
  147. Tank level/clunk for a .40 FP
  148. Ft-300
  149. Muffler for OS 160 fx
  150. Surpass 120 w/pump
  151. Pumped FS 70?
  152. 46 FX Exhaust
  153. Air Bleed Adjustment LA 46
  154. 1.6FX - NIB crank won't turn
  155. Submerged O.S. F.S. 52 Four Stroke
  156. OS 1.60FX power?
  157. Pumped .61SF fuel line connections
  158. FS 90 backfire and needle valve problems
  159. OS 160 fx port timing
  160. os fx .61, pitts problem
  161. os surpass 70
  162. Carb setting on 21RG
  163. OS 25 needs more grunt
  164. Super heated OS .91FX, AMC:Help!
  165. Ziroli B-25 (101) approx 35 lbs
  166. Os .91fx
  167. My OS 10 wont run right
  168. HELP! My engine won't run!
  169. os52 exhaust
  170. O.S 120 II pumped
  171. More RPM's
  172. FX 46 making me nutz
  173. 18x6W or 20x6 for 1.60 FX
  174. 40LA Muffler fasteners
  175. C/L to RC conversion
  176. OS 46 & 61 SF ring replacement
  177. OS 70 Surpass
  178. FS-91 Surpass
  179. What is the expected life of an FX 46?
  180. rebuilding
  181. OS FS-70 repair
  182. OS 32 F Helicopter
  183. OS .46fx help....
  184. Is there a new OS 91???
  185. What size is the exhaust thread on OS 91 Surpass
  186. Cost of estimate ?
  187. Should I not repair my os 46sf?
  188. Need help on OS-91 FS II (no pump)
  189. 60 fx cyl peeling
  190. OS 70 SZ no mid range mixture
  191. Instruction Manual 7m Carb.
  192. Gummed up engines
  193. O.S. 46 LA Question
  194. FS-120s III
  195. 46 fx quits
  196. O.S. 1.6FX pressure tap-HELP!
  197. 46fx-h
  198. 46fx-h
  199. OS 160 FX setup
  200. .91 FX Prop selection
  201. Where is Ann Marie?????????????
  202. Fuel Pump
  203. OS 160 Twin exhaust extenders
  204. OS 46FX peeling
  205. Ring for 50SX?
  206. FS needle settings
  207. counter rotating engines
  208. 48 Surpass
  209. Os 30fs
  210. Pressure nipples
  211. OS 15 FP crank thread size
  212. Life Expectancy of the OS 50 SXH
  213. O.S. 1.6FX problem
  214. O.s. Engines Four Stroke
  215. Clattering and lost power in OS 70 FS
  216. Os 46 Fx
  217. O.S BGX performance curves
  218. .46FX rich midrange
  219. fuel for the RX140
  220. Idle mixture adjust for an older OS 1.08
  221. FT- 160 Engine mount
  222. OS FP35 - Old and rusty
  223. OS 32 Mounting hole blocked by remote needle valve?
  224. os 90 fs
  225. OS 46 only starts with Starter
  226. Os .10 Fsr
  227. Os 46 Fx
  228. OS140RX and muffler
  229. OS 46FX - starts backwards
  230. Fs120 Surpass wiyh pump
  231. OS91 Fan conversion
  232. Os 1.6fi
  233. OS 91FX Cutts out and flames out!
  234. Blubbery .50 SX
  235. Os Max 60sr
  236. 1.40RX eating bearings?
  237. lowest displacement O.S engine
  238. O.S. .61 FX help
  239. OS 15 LA liner problems/ what to do?
  240. Fuel Foaming
  241. .91FX Muffler vs .61FX Muffler
  242. .32 Sx
  243. OS 61 Fx substitute muffler
  244. Need answers from the pro's "OS Max 40 SR"
  245. OS 70 Heli engine problem
  246. OS 48fs broke valve cover, any comments?
  247. OS 120 Surpass Non Pump add pump?
  248. OS 70 surpass bogging at full throttle.
  249. OS 140RX pump problems? (long)
  250. OS Drive washer puller

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