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  1. FS-91 Surpass II - Black residue on the inside-top of fuel tank after running in
  2. OS 61 MAX SF Pumped
  3. OS 90 needle valve and o ring
  4. tank pressure
  5. fuel?
  6. Rumors of an .18
  7. Varnish or Rust?
  8. 61FX pitts muffler
  9. OS 1.08
  10. vz-rz interchange?
  11. MOVED: Need an O.S. FS61 Marine engine
  12. OS .21VZ-B Premature Wear Problems - Please Advise
  13. OS .60 FP RN
  14. Beginner: Cannot Start O.S. .46 LA
  15. OS300 4stroke twin
  16. O.S. Max FP 40
  17. Proper Break-In for an O.S. 25 fx
  18. Prop for OS 300 4stroke twin
  19. OS 50SHX-H
  20. Installing valves in cylinder head
  21. Rumor on the .46 FX
  22. OS FX 91 problems
  23. Hard to tune
  24. owners and parts manual, o s 61 sf
  25. 91 FX knocking
  26. .91 4-stroke exhaust pipe size
  27. OS FS 48 Surpass
  28. O.S. Carburetor #6B .61 SFN-H
  29. OS 61 FSR Carb question/replacement
  30. Bearings
  31. O.S. 46 FS
  32. OS FS-91 Removing the bearings
  33. Question about the Hanno Specials
  34. OS 120 FS SURPASS W/PUMP PLUMBING?
  35. Replacement Piston Ring
  36. OS 120 FSIII w/pump
  37. OS 300 4 stroke twin
  38. OS 160 FX Crank Case Tap?
  39. 140RX throttle linearity
  40. Great Service
  41. Tuning 120 fs surpass
  42. 3 View Outline ??
  43. Timing on O.S. .91SF Surpass
  44. .15FP CL vs RC question
  45. OS 108, Remote needle?
  46. OS .46 LA
  47. OS 108
  48. the 46ax
  49. OS 1.60FX Fuel choices
  50. OS FP/LA interchangability
  51. having problems with OS 91FX
  52. Help for parts for a 90 FSR?
  53. OS 61 SF Burning Plugs
  54. Os 140 rx
  55. OS 140RX
  56. OS 60 FR Muffler??
  57. Bax - Hobby Services inability to repair older OS engines??
  58. OS 160 Cant Get It Rich
  59. OS parts
  60. Parts for discontinued engine
  61. 91FX and a Bisson Pitts Muffler
  62. OS 48FS choke valve interchangability
  63. Hanno Special Header Length
  64. OS Max H
  65. OS 1.60 FX SPINNER ADAPTOR ?????
  66. Is my 46fx liner peeling?
  67. OS-32SX-H question
  68. Hanno Special Plug?
  69. 50 sx-h ring
  70. FX91-What fuel tubing size?
  71. o.s. 50 sx air bubbles
  72. having problems with tuning of O.S .61FX
  73. Setting up an O.S. 160FX
  74. Screw Size 46 LA
  75. i need to know what do i need to turn my os .12 cv into a pull start
  76. 2 questions about my os 40 la
  77. OSMax 12 CZ-Z problem
  78. Temperature of engines?
  79. OS 40Max-H My first engine teardown-help!
  80. OS 46LA...only as powerful as a 40?
  81. OS .46 FX Issue
  82. .91 FSR Parts Sources...
  83. OS 91 FS II pump
  84. OS91 - Dry rear bearing
  85. Problems with MAX 61FX
  86. OS FX .46 Getting Tired?
  87. OS 90FS FOUR STROKE ENGINE IDLE SETTING
  88. Info on FS120S II
  89. parts exchangeability
  90. HELP!! MY OS 50SX ISN'T RUNNING PROPERLY!
  91. Storage of OS 120FS with pump
  92. OS 46 FX Problem
  93. .61SF-P pump nipple broken
  94. OS #743 muffler replacement that fits?
  95. pre detonating OS 1.6
  96. OS 50 w/ 60 Carburetor
  97. OS 61RF-P
  98. OS 40 LA Airbleed setting
  99. OS Rotary engine
  100. O.S. 50 SX air bubbles
  101. os 48 compression loss
  102. OS 120 FS Question
  103. Question about service turn around time
  104. FS 70 Ultimate Availability
  105. OS 91 getting richer on idle
  106. OS 160 Fuel ?
  107. OS LA40 Carb Repair
  108. O.S. .91 FX
  109. OS FS-52 Throbbing
  110. 91 FX idle
  111. OS 70 S II Question
  112. Rusted stuff
  113. os 70 heli engine piston explodes
  114. OS 40 LA Power
  115. OS 91 Surpass question
  116. 52 4/C won't draw fuel
  117. LA 0.40 RPM's running away from me.
  118. OS MAX RZ compression
  119. OLD vs NEW OS 46 FX
  120. OS 140RX Rich in Midrange
  121. OS 1.60 Prop
  122. OS 25 MAX FP
  123. FS-120 (non-surpass) Performance Specifications
  124. FS 48 Surpass
  125. New or Old OS - How do you tell?
  126. ring job
  127. Four stroke mufflers
  128. .46FX to .50SX Upgrade ... help please ...
  129. OS FT-300 FOR MY PITTS SPECIAL
  130. Newly Broken In OS 46 FX
  131. Remote needle valves in os .50 SX and .91 FX
  132. OS 61 FS Muffler?
  133. Can I Make My .61FX a .91?
  134. 40 SR parts
  135. bubbles!! ehhh!
  136. O.S. .61 SX-H Heli Engine- HEIM Mechanics Setup
  137. Tried everything, 46 NV still leaks?
  138. os 46fx..need serious help
  139. OS 40 No compression
  140. OS Max SR-40 Marine - what muffler?
  141. Main bearing broke
  142. Manual for a Max .61 SF?
  143. Tri prop for OS FS70
  144. How to send an item to service
  145. About this Forum
  146. fx 61 loosing power
  147. engine help
  148. OS 91 Surpass-version I
  149. O.S. 25FX and O.S. 25SF
  150. New 91FX muffler missing baffle
  151. OS 91 FX very slow to idle down
  152. os Wankel 1800
  153. OS 91 FX
  154. O.S. 1.08 FSR
  155. I lost a muffler bolt on my 46 fx
  156. Corrosion on piston/cylinder and crank
  157. Port timing 91FX Vs 91SxH
  158. 25 la....
  159. FS-120 surpass fuel setup
  160. 0.s.15 cv-rx refusing to keep running
  161. OS 46 SF
  162. FS-70 header pipe broke on run-in
  163. Pressure Tap OS 91FX
  164. OS60 MAX-H
  165. Bax - OS .10 FSR Con Rod Substitute??
  166. FS90 head stripped
  167. Looking for OS FS-26 Info ...
  168. 46FX - engine rpm up and down at full throttle
  169. Prop Choice
  170. OS 120 w/pump instruction manual needed
  171. OS 120 Surpass I power loss
  172. OS 50 sx Sucking air?
  173. Brass hexagon inlet holder position??
  174. Liner pealing
  175. O.S. 46FX Engine temp
  176. Wankel woes
  177. OS FS-70S head
  178. OS 50 SX making strange noise
  179. 46 LA Prop spun off during break-in run
  180. I'm a newb: OS Max SF 61 With Pump
  181. OS 160FX Bearing Problems?
  182. fx160 needle setting?
  183. OS120 Surpass I Bearings & Gasket Q?
  184. Os .15 Cva
  185. Aeroworks Extra 300L Profile ARF + OS BGX-1 (3500)
  186. Os70 Sz-h Ring
  187. help with surpass 70
  188. oil content and type
  189. Warranty service on OS.91FX, turn around time??
  190. os max 40fp + glow plug
  191. New OS 91 SX acro?
  192. Help with disassemble of OS 120 FS
  193. Position of Fuel Tank
  194. O.S .12 TR(P)-T help.
  195. OS FX 1.60 + Top Flight 18x10
  196. O.S. 32 sx-h gradually lost power
  197. OS 140 RX Bearing
  198. Valve clearence for OS 91 Surpass?
  199. os 300 twin mounting
  200. Surpass 70
  201. Is the Tower plug same as the OS #8???
  202. OS 1.08 low end needle problems
  203. O.S. .46fx
  204. OS .46 fx muffler
  205. 1.60FX Needle Valve replacement
  206. os 61 h wc start off fuel settings
  207. O.S.70B Mixture Control Carb
  208. OS carb # 7DV
  209. OS 46 fx
  210. which muffler?
  211. OS 120 Surpass II head gaskets
  212. 120 Surpass II running lean and needle valve screwed all the way out!?
  213. OS 120 Surpass III optional header
  214. Turnaround time at O.S.
  215. Replacement of my 91FX (Bax)
  216. os 46 fx doesnt turn
  217. 91 Fx
  218. OS 91 MAX Muffler wanted.
  219. the perfect propeller is...
  220. O.S. FS-120S-E Carb leakage
  221. OS FS 91 4 Stroke
  222. 48 surpass compression loss
  223. Ff-240
  224. .21 Rg M
  225. .21 outboard
  226. OS 120 II idle problem
  227. valve adjustment screw
  228. OS screws
  229. 160FX midrange lean condition
  230. OS 91 Fx Quits in mid Range.
  231. Os 160
  232. OS 40 four stroke surpass, idle prob !
  233. os 32 sx
  234. 140Rx & 140EFI Rear Bearings
  235. 40 LA with poor fuel flow (I think)
  236. Torque specs for cyl head screws?
  237. O.S. fuel
  238. advice on Surpass 120 back bearing
  239. O.S. .12 cv-r stalls
  240. OS Max 61FX
  241. 50SX (non-H) on Heli Fuel?
  242. OS .46fx liner peeling?
  243. perry pump on back plate
  244. Os 46sf-p Abc
  245. OS .61 FX missing part?
  246. 46fx breakin
  247. 25LA Problem
  248. OS 50SX Break in ?
  249. 61 FSR carb
  250. starting my o.s..15 cv-x

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