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ys 50 st crank case landriverse 1 194 11-25-2013 12:21 AM
TMoore
Running my 91HZ-R a few hundred rpms over, will it hurt motor ( page 1 2 ) shinysideUP 22 936 11-25-2013 12:13 AM
gouki
Will OS 32 SX-H fit my antique Kalt 20 Baron dalem4776 4 249 11-19-2013 08:09 PM
reddragon
Exhaust Gasket ??? Big Electrics 17 1337 11-18-2013 01:40 PM
rikkidan
Os 105 or YS 91 SRX Tareq with corresponding Hatori jmiceli11 1 514 11-17-2013 11:49 PM
scootr
YS60sr and ar7100r w/backplate sensor need advice!! craheli1 2 224 11-17-2013 04:17 PM
craheli1
Clunk lines Rob43 7 383 11-09-2013 12:44 AM
Rob43
OS Regulator Assembly pitch black 18 703 11-06-2013 01:56 AM
dodgeboy
ys60 on sab55 johnbs8 3 314 11-04-2013 05:28 PM
ExFokkerFlyer
smallest gasoline twin? RM3 6 380 11-04-2013 12:58 AM
jbjones
YS60 on sale ICUR1-2 1 338 11-03-2013 04:46 AM
johnbs8
Anyone ever have a backfire on glow engine? meowguy 0 238 10-30-2013 03:05 PM
meowguy
Muffler Crack? birddawgg 2 297 10-29-2013 05:33 PM
z11355
Help with getting broken off ball hex tip out of bolt Rick~K 2 229 10-29-2013 12:44 AM
Rick~K
After how many gallons do you change the plug? ( page 1 2 ) Richardmid1 25 1332 10-29-2013 12:43 AM
airdodger
Fuel line and clamps ( page 1 2 ) Rob43 23 650 10-28-2013 07:05 PM
Rob43
YS 91SRX. ( page 1 2 ) J. Hall 32 2197 10-26-2013 06:05 PM
Agilefalcon
What RPM do you run your engines? Close to peak HP? Tune with gearing? devin120 5 346 10-26-2013 04:10 PM
devin120
What is everyone paying per gallon or case for 30 / cool power or wildcat? hindsight 11 675 10-24-2013 07:50 PM
Rob43
O.S. .91 SZ Pipe?? flyin dan 0 199 10-24-2013 12:14 AM
flyin dan
OS .55 HZ bpippin 13 567 10-19-2013 04:50 PM
ICUR1-2
nitro content rjflyer 3 326 10-17-2013 08:42 PM
ticedoff8
Using the thrust washer don s 4 293 10-17-2013 12:56 AM
don s
YS 120 SR fastrc1 7 504 10-16-2013 06:10 PM
blucido
OS 91 HZ-R sputtering CF1 16 774 10-16-2013 12:10 AM
Ed W
YS 61 won't fire! dela 15 420 10-15-2013 04:01 PM
Santiago P
Align 91H or 91HB, what is the difference? jimm 7 453 10-15-2013 06:58 AM
Olorin5
Outrage EVO 55 pipe... cmsilvoy 4 206 10-14-2013 12:07 PM
mister-j
YS60 / Synergy N5c kvnm27 8 531 10-13-2013 06:47 PM
kvnm27
OS 32 SX question hoversmooth999 6 266 10-13-2013 01:52 AM
hoversmooth999
HeliDirect . Heli-Max . Scorpion Power System
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