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