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  1. OS-52 four stroke
  2. OS 160FX Stock or Pitts Muffler
  3. Fx 160 in G202 GP
  4. Inverted OS 25 fx (4 engines, B-17)
  5. OS 120 Surpass II
  6. Os .35 FP--need a head gasket.
  7. Os 61 Sf
  8. Tower muffler for 46FX
  9. Os50
  10. Tank level/clunk for a .40 FP
  11. Ft-300
  12. Muffler for OS 160 fx
  13. Surpass 120 w/pump
  14. Pumped FS 70?
  15. 46 FX Exhaust
  16. Air Bleed Adjustment LA 46
  17. 1.6FX - NIB crank won't turn
  18. Submerged O.S. F.S. 52 Four Stroke
  19. OS 1.60FX power?
  20. Pumped .61SF fuel line connections
  21. FS 90 backfire and needle valve problems
  22. OS 160 fx port timing
  23. os fx .61, pitts problem
  24. os surpass 70
  25. Carb setting on 21RG
  26. OS 25 needs more grunt
  27. Super heated OS .91FX, AMC:Help!
  28. Ziroli B-25 (101) approx 35 lbs
  29. Os .91fx
  30. My OS 10 wont run right
  31. HELP! My engine won't run!
  32. os52 exhaust
  33. O.S 120 II pumped
  34. More RPM's
  35. FX 46 making me nutz
  36. 18x6W or 20x6 for 1.60 FX
  37. 40LA Muffler fasteners
  38. C/L to RC conversion
  39. OS 46 & 61 SF ring replacement
  40. OS 70 Surpass
  41. FS-91 Surpass
  42. What is the expected life of an FX 46?
  43. rebuilding
  44. OS FS-70 repair
  45. OS 32 F Helicopter
  46. OS .46fx help....
  47. Is there a new OS 91???
  48. What size is the exhaust thread on OS 91 Surpass
  49. Cost of estimate ?
  50. Should I not repair my os 46sf?
  51. Need help on OS-91 FS II (no pump)
  52. 60 fx cyl peeling
  53. OS 70 SZ no mid range mixture
  54. Instruction Manual 7m Carb.
  55. Gummed up engines
  56. O.S. 46 LA Question
  57. FS-120s III
  58. 46 fx quits
  59. O.S. 1.6FX pressure tap-HELP!
  60. 46fx-h
  61. 46fx-h
  62. OS 160 FX setup
  63. .91 FX Prop selection
  64. Where is Ann Marie?????????????
  65. Fuel Pump
  66. OS 160 Twin exhaust extenders
  67. OS 46FX peeling
  68. Ring for 50SX?
  69. FS needle settings
  70. counter rotating engines
  71. 48 Surpass
  72. Os 30fs
  73. Pressure nipples
  74. OS 15 FP crank thread size
  75. Life Expectancy of the OS 50 SXH
  76. O.S. 1.6FX problem
  77. O.s. Engines Four Stroke
  78. Clattering and lost power in OS 70 FS
  79. Os 46 Fx
  80. O.S BGX performance curves
  81. .46FX rich midrange
  82. fuel for the RX140
  83. Idle mixture adjust for an older OS 1.08
  84. FT- 160 Engine mount
  85. OS FP35 - Old and rusty
  86. OS 32 Mounting hole blocked by remote needle valve?
  87. os 90 fs
  88. OS 46 only starts with Starter
  89. Os .10 Fsr
  90. Os 46 Fx
  91. OS140RX and muffler
  92. OS 46FX - starts backwards
  93. Fs120 Surpass wiyh pump
  94. OS91 Fan conversion
  95. Os 1.6fi
  96. OS 91FX Cutts out and flames out!
  97. Blubbery .50 SX
  98. Os Max 60sr
  99. 1.40RX eating bearings?
  100. lowest displacement O.S engine
  101. O.S. .61 FX help
  102. OS 15 LA liner problems/ what to do?
  103. Fuel Foaming
  104. .91FX Muffler vs .61FX Muffler
  105. .32 Sx
  106. OS 61 Fx substitute muffler
  107. Need answers from the pro's "OS Max 40 SR"
  108. OS 70 Heli engine problem
  109. OS 48fs broke valve cover, any comments?
  110. OS 120 Surpass Non Pump add pump?
  111. OS 70 surpass bogging at full throttle.
  112. OS 140RX pump problems? (long)
  113. OS Drive washer puller
  114. OS 52 low end mixture
  115. os max-H 40
  116. FX46 Cylinder Peeling
  117. 91 FX on U-Can-Do 3D
  118. Replacement Parts for TH engines
  119. I have a question
  120. After Run Oil
  121. Another 1.60/Bisson Pitts Muffler question
  122. Need AM Cross' Help with parts
  123. After run care (OS46)
  124. Does OS engines have warranty?
  125. Please Close Thread.
  126. OS 70 SZ Eng
  127. New OS 50SX missing gasket and leaking
  128. 91 FX quits
  129. Fs 61
  130. 50 SX Running Problem
  131. Os 91 Fx
  132. 50 exhaust baffle
  133. Os Fp 40 Max?
  134. OS91 4-Stroke Question
  135. Bad OS #8 plugs--good A3s
  136. OS 50 SX and Fuel (Oil %)
  137. OS .46fx muffler....screw broke...need back half of muffler
  138. OS .91 FX Troubleshooting
  139. OS 48 Spits fuel out the carb
  140. 1.60FX Pitts Muffler pressure
  141. OS .91Fx to Pump or not to Pump
  142. 1.60FX-FI air valve retention
  143. Prop Nut
  144. 15cvr unusual problem
  145. Static thrust of BGX-1
  146. After run oil on a 46FX
  147. OS 91 VR-DF Small Head
  148. Suggestion: We Need A Os160fx Rear Exhuast For Pattern
  149. Stuck OS 46 FS Muffler
  150. OS 46 FX problems?
  151. OS Engine Trouble ( .15 CV-R) Help!!!
  152. OS Pump?
  153. OS 70 Heli engine
  154. OS gas engines?
  155. Fuels F.A.Q.
  156. Rethinking remote needle valves?
  157. O.S 1.60FX and nitro %
  158. 61 FX Bearings
  159. O.s. .52 Surpass Heli Engine...
  160. 15cvr trouble
  161. torque vs horsepower vs RPM
  162. Service & Repair $$$$
  163. Os160 Rear Exhuast
  164. FT-160 Carburetor
  165. os160fx BACKPLATE ALIGNMENT
  166. Os 46fx
  167. after market mufflers
  168. OS46 break-In discrepancies
  169. OS 46 FX, no full throttle
  170. How to set your high speed needle for optimum in flight performance
  171. Os70
  172. What is the evolution of OS 4 strokes?
  173. 1.60fx , muffler ?
  174. selecting 3- adn 4- bladed props
  175. Info on the OS EFI engines
  176. History of OS engines....
  177. Old OS Max .10
  178. OS FX 1.60 -- Overly Sensitive to Lean Runs ???
  179. 91fx
  180. low power OS 1.60FX
  181. 91fx
  182. Older OS .46 VRM Marine
  183. Runs and Quits "tip of the week"
  184. Need Help With OS 120 III with Pump
  185. OS 1.20 W pump inverted?
  186. Need gaskets for OS 40 SR
  187. os 91 fx
  188. Reverse Rotation Crankshaft for older OS60/61 FSR
  189. OS50 'sneezes'?
  190. 160fx prop 3d
  191. what is the size of thread for the nipple in OS 46fx muffler?
  192. OS .50 SX - Won't die?
  193. .91 FX Props
  194. OS 1.60FX detonation in the midrange
  195. OS and Thunder Tiger story
  196. OS 50 SX Aircraft
  197. Prop size questions
  198. OS max 40 Sr Engine
  199. out of touch for a little while
  200. OT: GP 1/3 Scale Pitts tech notice.
  201. 3 blade prop for .61FX
  202. Os Cz 15
  203. tip of the week: tuned pipes
  204. Dynamite TNT .12R
  205. OS 160FX Cuts out 2/3 tank
  206. Too rich idle
  207. Remote Glow Driver cap wont fit.
  208. Mounting .91 FX horizontal
  209. OS160FX Piston
  210. os 52 surpass
  211. OS CV troubles
  212. Os 50 & CY MP 30%
  213. manuals, expl view, parts lists, dimensions, pricing and more!
  214. O.S. .15 LA from LHS w/o instructions?
  215. 15cvr with 10a carb
  216. A must read!
  217. Os 46 Vx D/f
  218. OS 61Fx Muffler
  219. Best prop for fx160
  220. Os 70 Surpass Runs Eratic At Full Throttle
  221. os max .35 needle valve needed
  222. OS .91 Surpass Problem
  223. OS max FP 40
  224. os 70 surpass throttle postition Q...
  225. In-cowl muffler for OS 91 FX
  226. Out Of Town Notice
  227. OS91Fx air bubbles in needle valve fuel line
  228. Glow plug reaches ??
  229. 91 fx air leaks
  230. OS1.40RX (first series) low end?
  231. Please read before posting...........
  232. OS 160 Shortening stock muffler
  233. The baffle - what's it for?
  234. cleaning .46 FX
  235. OS 1.6 FX Starting question
  236. OS .61 Hanno
  237. O.S. .91FX Lemon (Revisited)
  238. best prop for os bgx
  239. Problem with OS .61RF-ABC-P
  240. Problem with OS .61RF-ABC-P
  241. Parts available for older engines?
  242. Thread questions for carb and glow plug
  243. os 46 fx
  244. Re: os fs 120 sp
  245. OS 46FX Muffler
  246. OS Max .34 F question
  247. O.S. .91FX Lemon
  248. OS300 troubles
  249. O.S. 4-Stroke Headers
  250. 46Fx Warrenty Question