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  1. FS-81a manual
  2. 120 surpass III bogs down on full
  3. MOVED: replacement engine for tamiya nitro thunder
  4. what os engine is compatible with tamiya nitro thunder
  5. OS Ft-160 Twin PROBLEMS
  6. OS FT-300 Exhaust
  7. OS 91 Surpass P
  8. OS 61 FX carb
  9. OS carb change
  10. Engine screams with throttle closed, crack/air leak?
  11. .91 crankshaft part number.
  12. OS FS200 typical RPM?
  13. OS 200FS lost compression
  14. os .18 tm problem
  15. OS61RF pump exploded view
  16. 91fx piston cleaning
  17. turbo plugs
  18. OS FS-80 - anno 1982 version
  19. OS21tm Crank
  20. 91FX getting hot
  21. OS 91 FS Surpass Prop.
  22. OS 91 Surpass II
  23. muffler
  24. O.S. .120 Surpass Retrofit
  25. OS 120 surpass E plumbing??
  26. OS 4 Stroke valve kit
  27. OS 91 S II
  28. Difference between Surpass and Surpass II?
  29. OS 61 MAX SF
  30. OS91 heli engine cutting at mid power
  31. Os 91 Fx
  32. OS 46fx
  33. Fr5-300 sirius breather nipple
  34. OS FL-70 idle problem
  35. Accurate compression test.
  36. OS FS .90 Surpass priming help.....
  37. 55 AX vapor lock
  38. OS 55ax new (15611) vs old (15610)
  39. Problem with OS 61FX
  40. OS .21TM Fuel Question?
  41. Leaking front bearing
  42. OS 46 AX fuel feed problems
  43. Surpass parts interchangeability
  44. OS91FX Props
  45. 65 LA cover plate LEAKS alot
  46. FS120 series iii regulator leaking.
  47. OS50SX ringed
  48. FS-91 Surpass Cylinder Head
  49. l
  50. FS 91S II-P woos
  51. FS110a how to upgrade to pump version
  52. O.S. 46AX Idle speed
  53. OS Aluminum Eng. Mount 904
  54. Which OS max do I have??
  55. 95 AX run in problems.
  56. O.S 120 III pump
  57. Starting
  58. Do New OS 55hz's have difficulties???
  59. .10 FSR Muffler Question
  60. O.S. Muffler
  61. OS .46FXi
  62. Muffler Extension
  63. OS 1.20III pumper
  64. Carb barrel stop screw
  65. Fuel-Oil% for O.S. 18TM
  66. FS-120, Crank Turns, Piston Frozen
  67. OS 61 RF
  68. O.S. FS-200S-P
  69. O.S. 18 TM
  70. dimensions of O.S. 160
  71. Head gasket for 46 AX
  72. OS 160 Fuel tubing/filter/clunk size
  73. 4-Stroke dissasembly
  74. OS 1.60 Advice
  75. OS .61 SF- ABC or Ring?
  76. OS Surpass FS .91 inverted question
  77. where can I get a crankshaft?
  78. 75AX Tank Size?
  79. OS 91FX con rod assembly
  80. tank position
  81. OS V Spec
  82. 25FX
  83. O.S. 10 FP
  84. OS 40 VR-P
  85. OS FS-30S 4stroke valve spring breaking
  86. OS 30sf 4stroke
  87. Porting the OS 30VG
  88. what glow plug
  89. old o.s. 20 AND .25
  90. crankshaft
  91. OS 91FX being discontinued
  92. O.S.61SF carb
  93. can i use heli 20% nitro / 19% synth oil in a 1.20 with pump?
  94. OS 65 LA Low Speed Adjustment
  95. A3 or New A6 Plugs
  96. After run oil to an OS 120 FS III
  97. OS MAx 1.20 AX with Power Box Muffler:
  98. OS 61 Long Stroke.
  99. os .15 tank
  100. New OS 4-stroke pricing structure..not making sense?
  101. .55 AX Prop Clearance
  102. OS 30VG exhaust pipe
  103. OS VFDF .25 Gaskets
  104. Installing Piston and Sleeve on OS 46FX
  105. O.S. FS-91 II Surpass valve question.....
  106. OS FS header pipe
  107. headers for OS 18TM
  108. 18tz Low RPM Overheating
  109. OS FS 91 Pump ( Surpass II )
  110. OS Max 20FP question
  111. OS engine suggestion ...
  112. OS engine suggestion ...Bax!
  113. 91 Surpass Crankshaft/Camshaft Install
  114. OS exhaust manifold for OS 81 FSa in Great Planes Reactor
  115. prop nut spinner for os ft 160
  116. OS 50 Hyper Full of Oil - No really full!!
  117. ABout buying an OS FL70..
  118. Pitts muffler for side mounted 1.10 4-stroke
  119. OS 46 AX
  120. Os Max FT 240 twin..
  121. .90 FSR for speed
  122. Temperature value for a heli 55HZ-H
  123. 120 AX remote needle valve
  124. 120 AX remote needle valve
  125. OS FS 90
  126. OS 46 AX damage
  127. OS 110 FSa problems
  128. OS 46Ax transition
  129. Problem Tuning-Transition OS55AX
  130. DOES ANYONE KNOWN WHERE I CAN GET PARTS FOR A OS77DUCTED FAN ENGINE!!!!
  131. OsFS61
  132. Cyl/piston
  133. fuel
  134. OS 1.20 S III pumper
  135. OS 110FSa exhaust silencer keeps coming loose
  136. older O.S. .40 question
  137. OS 28XZ tech question
  138. 91 FX muffler
  139. cam timing OS 81FSa
  140. O.S. 120 surpass II idle mix?
  141. os 70 ultimate help plese
  142. O.S FT-300 compression ratio?
  143. os55 prop size
  144. O.S .18 TZ engine
  145. OS 55AX Carb ??
  146. Help with settings on FS-200S-P
  147. WD40 as afterun oil.
  148. OS .37 Carburetor Slop
  149. os21vg wont start
  150. Prop reamer
  151. Need help with OS91 FS II
  152. prop for ft-300
  153. os 140 rx pump
  154. parts for 40/45 FSR
  155. OS 81FS a question
  156. What's the difference?
  157. os 25
  158. Removing Blue Color 40 LA
  159. OS FS120 Muffler?
  160. OS 110A Prop?
  161. OS 91 Surpass
  162. OS 95AX inverted Pitts muffler question
  163. OS 160FX crankshaft seems to wiggle
  164. O.S. Engine After-Run Recommendations
  165. 18TZ
  166. 60FP parts
  167. OS .18 CV-RX
  168. OS Gemini 160 twin 4 stroke
  169. OS 110a RPM?
  170. OS 1.20 Surpass III w/pump question?
  171. O.S 120 FS pre Surpass
  172. OS 91 Surpass Pumper
  173. 120AX bearing change out
  174. 120AX bearing change out
  175. OS 10 FP,FSR, LA etc
  176. OS F glow plug ???
  177. OS .50 SX-H ringed hyper acting up
  178. older .48 surpass parts
  179. Is there an idle mixture adjustment on the 10H Carb?
  180. .46 LA Non Ringed - Break in and best fuel?
  181. OS .61 SF (circa 1987) Needle Valve Replacement
  182. FS-200S-P Engine Mount
  183. OS 60 FSR or 60SR Engine what is the differance in them
  184. OS 160FX Crankshaft Shear
  185. 7L carb
  186. FS120 Cyl Liner
  187. Hyper 50 sputter problem
  188. 7L carb
  189. Tank Position
  190. Old OS Overhaul Service Available?
  191. FS 120 Surpass pumped
  192. 7L carb
  193. How do you actually check an Injector?
  194. .81 alpha propeller for 3D.
  195. 7L carb
  196. OS 140RX Need Help
  197. OS 21TM needle settings
  198. Are OS FS91 series carbs interchangeable?
  199. OD 70 surpass camshaft cover
  200. found out the easy way
  201. os fs 70 surpass
  202. 2 stroke carbs in general
  203. OS 70 Surpass - Low speed/idling issue
  204. OS 91 FX - rattling noise
  205. OS Carb Parts
  206. O.S. 55AX Muffler question
  207. Bad bearings not covered under warrenty?
  208. need shaft dimension for this OS part
  209. OS 25FX
  210. 3-needle carb heli engines... cannot seem to tune them!
  211. O.S. FS-90
  212. OS 46 LA (Natural)
  213. 55AX Inverted Brake in
  214. Sirius 300 Radial
  215. 55ax carb housing
  216. O.S. 95AX Questions?
  217. OS 91 FX:Slimline Q vs Bisson Muffler-Pitts style
  218. O.S. FS-26S-C II 4-Stroke
  219. 55 Ax Prop ?
  220. OS4A Carb
  221. OS FS110 A muffler
  222. 40 fp muffler exhaust extension
  223. Replacing The .25FX with .25AX WHY?
  224. os 75ax
  225. os .18cv-r clutch ?
  226. O.S. FS40 Surpass Ringed is it enough power?
  227. advice for a clone 91
  228. os 4strokes
  229. OS 25 FX Muffler Screws
  230. MOVED: Throttle Arm for FS-91 Surpass II?
  231. 46 FX help with Con rod
  232. cylinder head bolt stripped removal???
  233. Os 46 sf carb or barrel replacemnt ?
  234. Surpass lll Manufacturing defect
  235. .81 Alpha question and 55AX.
  236. 55AX vs. 61FX?
  237. Old Surpass parts
  238. LA vs AX
  239. .28 XZ Truggy Engine tuning/heat issue
  240. OS 120 Surpass 111
  241. OS 50 SX fuel problem. Please help.
  242. .91 surpass bearings
  243. New OS 120AX back plate rubbing
  244. OS46SF Counter Rotation Crankshaft
  245. OS FS 91 Surpass I Valve springs.
  246. Surpass 1.20 III pumped idle problems
  247. Slimline compact pitts on a 55AX
  248. 40 Fx Needle Valve
  249. OS55AX
  250. OS 91 FX