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