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  1. New YS 140 Sport - Name?
  2. Ys F120
  3. YS140L Sags with Positeve G
  4. Dz
  5. 140 DZ 3D 3 blade props
  6. YS 120 NC Quits
  7. 63 fz rpm question for dave
  8. ys 140l leaking through exhaust and carb...
  9. Regulator Disassembly
  10. YS FZ 63 Four stroke
  11. My 120NC quits after 2-3 minutes!
  12. 140 Dz
  13. YS 53 Prop Size
  14. YS 1.40 DZ with the DP Ultimate
  15. YS 140L Manuel
  16. Ys 120fz
  17. 91FZ question
  18. ys-91 Top End Power
  19. YS 120 / 140 tuned pipe
  20. do i have the real thing?
  21. 61 ST I or ST II?
  22. YS140FZ - Piston Rock
  23. needles and regulators
  24. YS 120 leaky carb!!!!!!!!
  25. YS63 hard to start.
  26. YS in NV or Central Hobby
  27. YS 120 NC Prop and fuel ?
  28. need to send in a 120 for overhaul
  29. 91FZ --> 110FZ conversion possible?
  30. F-120 leaks from carb
  31. 140 Dz - Regular Synthetic Oil?
  32. straight in flow muffler 140 sport
  33. No tools with new 140 sport
  34. YS 140L eating CAM & other questions
  35. Ys 110
  36. Ys 91 Ac
  37. New YS110
  38. 140L FunFly Prop
  39. Ys 120fz
  40. Solvents/HC gaskets for YS63
  41. my 120FZ starves at Full Throttle
  42. YS Service Thanks Dave
  43. 2 YS-63 hard starting problem
  44. 120 Nc
  45. YS 91FZ idle question
  46. 140dz
  47. New 140L
  48. Nose Ring Tape?
  49. YS 140DZ fuel question
  50. Piston compatible?
  51. concerned
  52. DZ140 problem (Dave)
  53. How to change cam bearings
  54. 140 Sport spitting fuel
  55. When does the new 110 come out?
  56. Check valves
  57. Wanted__nib 91fz
  58. 120NC Carb Modification?
  59. YS91 Will Not Quit
  60. Tank on CG
  61. 91FZ dies hovering (Dave)
  62. Ys120nc
  63. Engine speed while flying.
  64. New Web Site ?
  65. YS 120 SF "Stiff Needle Valve"
  66. YS 63 jumps out of time
  67. sick 91AC
  68. DZ 140 Prop size (Dave)
  69. ys 63 no compression
  70. YS 91 AC + Hyde Soft Mount... Nose Ring, Yes or No?
  71. YS 91 AC Mufler
  72. YS 91 FZ "Won't Start" - Dave Comes Through Again!!!!
  73. Ys120fz
  74. YS 91 Fuel Line Routing
  75. YS 91 AC Threaded Crankshaft
  76. ys 63 starting problems
  77. YS91 AC lean on top end
  78. YS 91FZ Fuel
  79. I agree
  80. YS 1.40 Sport Fuel Consumption
  81. YS 91ac muffler
  82. DZ 140 - Too Lean
  83. Mounting YS FZ-120 On DuBro Mount
  84. Any Helpful 63 Owners????
  85. YS .63 Problem
  86. YS 63 poor transition & carb leak
  87. YS 91Ac-FZ Question?
  88. Ultrathrust
  89. 140 Sport Problem
  90. DAVE??correct plunger question?
  91. YS MUFFLER
  92. Pizzaz 40 with a YS 63, anyone have any tips?
  93. YS-63FZ Mid range running Problems
  94. YS 45 Operation Help
  95. YS 63 prop for break-in
  96. YS 110 on 15% Coolpower blend
  97. Leaky DZ 140's
  98. YS Plug or OS ?
  99. YS63 leaking fuel
  100. YS 45 hasn't been run in a long time ...
  101. YS 140 FZ fuel consumsion
  102. YS 91FZ idle problem - at end of my rope
  103. YS 91 - I know nothing!!!
  104. HS Needle valve adjustment?
  105. mounting YS 63
  106. YS91 don't run at idle for more than few secs
  107. YS120 regulator?
  108. YS 140,pressure to suction
  109. YS 110 Size
  110. YS53 midrange
  111. 120 SF Valve Leakage
  112. YS .91 AC fuel from carburetor
  113. YS91FZ break in problems
  114. YS .63 will not stay running
  115. YS 63 break in procedure question
  116. Inverted YS 1.20NC
  117. Muffler for 140DZ
  118. ys60re question
  119. FZ63 muffler baffle?
  120. fuel mixture problems
  121. Ys-45 only turns 11,000 rpm
  122. YS 63 break in
  123. What Aluminum Spinner for YS63?
  124. what prop size
  125. YS63 Question for Dave(or some1 that knows)
  126. 120 gaskets
  127. Coolpower 15%(Green OR Red?) Anyone??
  128. YS 91 - discontinued ?
  129. YS120F won't run
  130. Dave: Ys 110 Best Rpm Power Band?
  131. Dave, question please. How to remove nuts from prop.
  132. YS 140L Hyde Mount ?
  133. YS 63 Muffler
  134. Operation of YS Regulator Assembly
  135. Info on the YS-91-FZ
  136. Question for Dave?
  137. bent crank YS .63
  138. Whats up with the YS 63's?
  139. YS 1.40 DZ smoking
  140. fz91 Idle problem
  141. YS 63 goes Lean in flight
  142. YS 63 inverted installation
  143. YS .63 Valve setting, and engine break-in questions
  144. Does my YS 91FZ Hate me??
  145. 120 SF Intermittent
  146. Disassembling YS91FZ
  147. Ys 91 Fz
  148. YS 63 availability? Redesign?
  149. YS 120 ac+ DP Ultimate
  150. Range of Prop Sizes for 110
  151. YS 1.20 s? loose muffler
  152. 140 Sport
  153. ys 120 sc ?(Dave help I am confused)
  154. venturi restrictor - 140 DZ
  155. Fuel Filler for 140 DZ
  156. YS rpm problem
  157. yamada YS63FZ
  158. Ultrathrust for OS 91 FX
  159. Fuel Injector Nozzel on 140DZ
  160. YS 45 Tuned Pipe
  161. New Here..Need YS 120SF Help..PLEASE!!
  162. Need Tips On How To Set Valve Clearances On Dz
  163. No compression on YS63
  164. Reversing 140DZ?
  165. YS 120 FS piston, cylinder ,rods ?
  166. YS91 FZ, runs rough 4 clicks above idle - Help please
  167. YS 46 two stroke?
  168. YS 91 Problem
  169. YS140 Limited
  170. To invert....or not to invert.....
  171. Replacing head on 91ac - help !
  172. YS 45 FR pipe ?
  173. after run oil
  174. ys .6O exhaust
  175. Need info on Ryan STA 1/4 scale
  176. NC Spitting Fuel
  177. YS80 Engine Manual
  178. Dave, ys 63 > some ?'s
  179. YS 91 Heli engine in plane
  180. Ys 63
  181. Status of the new 110
  182. 1.40 DZ fuel clunk
  183. YS91 Problem , (help Dave!)
  184. YS140FZ Surging
  185. Ys 61
  186. YS 63 Fuel
  187. YS After Run Oil
  188. YS .61 heat
  189. Which Prop for my YS 61 FR Long Stroke?
  190. Nitro in YS140
  191. Ys140
  192. ys 53 needle valve
  193. Over- rev a 91 AC
  194. A couple of YS questions
  195. Need info on Ultrathrust Mufflers
  196. Wildcat Fuel, 18% Oil, 15% Nitro
  197. YS91AC Parts
  198. 63 Problems
  200. Q
  201. Whats the best RPM for YS80 Heli engine
  202. The same problems...
  203. YS63 Prop Prob
  204. YS 140 DZ "M" (with factory soft mount)
  205. Heli YS80 Engine help/ys91?
  206. ys63 too rich
  207. ys 63 problems - rich midrange
  208. New YS rebuild question
  209. Prop test
  210. Ys91st
  211. YS - performance degradation
  212. Wildcat/ 140DZ
  213. Is 2000 RPM idle realistic?
  214. 140 DZ quetion for Dave
  215. Y.S. 45 header bolt thread size??
  216. new to 4 strokers
  217. more 63fz questions for dave shadel
  218. 120NC idle probs
  219. still problems with fz63
  220. YS Question For Dave
  221. Ultrathrust noise
  222. Ys 45 Silencer
  223. YS-63 Myth or fact?
  224. ys 4-stroke engine on twin
  225. Fuel shut off valve for DZ
  226. Ys 45
  227. 53FZ Timming Question
  228. Prop selection for YS63 on Kyosho Spitfire
  229. Dave please help...YS 61ST-2 idle problem
  230. Ys 120 Sf
  231. ys perf overhaul
  232. Strap on Ultrathrust
  233. ys 63 wont stop
  234. ys 140L prop, Help...
  235. 91 ac does not seem right on top end
  236. ys63 rpm/ are these figures normal?
  237. YS-91ACH conversion
  238. Problem with a Y's 140L motor.
  239. YS 91ZF leaking....somewhere??
  240. YS 140 DZ Thrust numbers ?
  241. ys.45 re questions
  242. Muffler for DZ 140
  243. Fuel YS20/20 and 30 % heli. High versa low viscosity oil .
  244. YS 91 FZ problems
  245. Ys .80 Stii/st3 ???
  246. 140l
  247. Starting procedure for YS 120FZ
  248. ys 120 fs opinion
  249. YS 120 FZ Problems
  250. Dz Bench Run