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