This section contains documentation for many of the popular Heli engines.   The documentation is in Adobe Acrobat (4.0) format and requires the Adobe Acrobat reader to view or print. Refer to the "Adobe Acrobat Reader" section on the home page for additional information.

OS Engine Data
OS Heli Engine Specs
OS Engine history
A timeline of OS engine development with photo's

Engines Manual/Parts break down
OS28 F-H & 28F-H ABC (128 k)
OS32F-H & 32F-HS & 32F-HX (200 k)
OS 32 SXH Manual (631k)
OS46SF-H Manual(64 k)
OS46 FX-H Manual (918 k)
OS50FSR-H Manual (61 k)
     OS 50 SXH Manual (784k)
OS61SFN-H Manual (71 k)
OS61 SXH Manual (701)
     OS 61 SXHWC Manual (1,139k)
OS61 LXH Manual (631)
OS91 SXH Manual (758)
OS91 SXH Cspec Manual (646k)
     

Carburators
OS 20C Carb Instructions (4)
     OS 32 Carb mod (3) Watch out for the music
     OS 7H Carb Instructions (29 k)
     OS 60B Carb Instructions (338 k)
Walbro Carb Service Manual (5.8 Meg)


Super Tigre
Main site
All engines - Manual
All engines - Parts

Thunder Tiger
ThunderTiger 39 H Instructions
Parts Listing All Heli Engines (889 k)

YS  Engines Data
     YS 61ST2 (235 k)
YS80ST (246 k)
YS91ST(240 k)
YS91SR (294k)

Webra Engines
This site has an excellent listing of the engines.
Parts drawings and manuals are also available.
Webra Australia

MECOA
K&B, HP, HB, MECOA, RJL & Fuji
Model Engine Co Of America
Aside from the engine information, this is a great site
to just browse around. The FAQ and Museum section
is worth looking at.

Miscellaneous Data
Engine prop nut size chart (2)

Understanding the Glow plug

Calculate oil requirement by mix ration
Shows amount of oil to add to gas to achieve
a particular mix ration - For Gas engines.

The Powermaster FAQ's
Caster versus synthetic oil
Nitromethane
2 vs 4 stroke fuels
Fuel storage

Legend:

  1. Rick's R/C Helicopters
  2. Extracted from the Dubro parts catalogue
  3. Repoman's Website
  4. OS Engine