RE: Is a 4 stroke worth the cost?
LOL Bla bla you're gonna get it. Even though you're right
Posted on: 9/27/2006 10:42 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4798811

RE: Head Leaks Fuel
Fair enough, I just haven't had any problems yet I guess.
Posted on: 9/21/2006 9:22 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4774903

RE: Strange Question about thrust
Actually 9.81N is the force a mass of 1Kg exerts on earth. Force is a vector it has magnitude and direction, mass on the other hand is a scalar and only has magnitude. They are not actually interchangeable but people do anyway
Posted on: 9/21/2006 9:10 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4774868

RE: Head Leaks Fuel
I think jetpack is referring to play in the conrod bushes. I don't thing the head gasket is a gasket as such but rather a shim to adjust compression ratio's, I have run engines with no shim and they don't leak. Downunder is correct conrods can strech in 4stroke engines. They are designed to take a compression force not tension. http://www.manxman.co.im/mvagusta/conrod.html
Posted on: 9/21/2006 9:00 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4774829

RE: Strange Question about thrust
low@slow What I meant, and should have said was it will accelerate to the same speed twice as fast.
Posted on: 9/21/2006 1:06 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4774200

RE: Strange Question about thrust
Force is newtons mass is Kg's. Torque is N.m, Force x distance. Power is Torque x rpm x Pi /60 or work done / time.
Posted on: 9/20/2006 6:21 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4772548

RE: Strange Question about thrust
all else being equal the 2hp engine should spool up twice as fast.
Posted on: 9/20/2006 8:18 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4770682

RE: Synthetic Oils
Some of the turbine oils contain organophosphates to help them cope with the different operating conditions they experience. I don't think it is a myth.
Posted on: 9/1/2006 2:13 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4696333

RE: F-117 Crash at BITW
Anybody using or considered using these http://www.brsparachutes.com/default.aspx maybe they could make model airplane ones, Might at least save the engines and retracts.
Posted on: 5/2/2006 8:36 AM by Author "Rupurt" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=4231127

RE: Why Methanol?
Hexane is an excellent degreaser better than methanol so you would need more oil, also running hexane will make the needle very sensitive because the mixture will be more lean than with methanol. Another reason why you would need more oil. I think using the exhaust to pressurize the tank would be a big no no. I think methanol is just the best comprimise and just about any fuel could be made to work.
Posted on: 5/2/2006 6:27 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4230885

RE: F-117 Crash at BITW
LOL, Thats wrong but still funny.
Posted on: 5/1/2006 12:50 PM by Author "Rupurt" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=4227695

RE: F-117 Crash at BITW
AFTERBURNER1 "Please resist the urge to curse, flame, degrade, insult or embarrass someone in your post. We encourage the free flow of your ideas, but believe that they can be communicated (and received) much more effectively if you keep things civil. If you have to vent, take it offline. We carefully monitor posts and will ban individuals who engage in offensive conduct within the forums. Thanks."
Posted on: 5/1/2006 12:23 PM by Author "Rupurt" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=4227594

RE: F-117 Crash at BITW
ET. An excellent pilot, who never makes mistakes, crashes a plane he is in full control of. I don't see your problem.
Posted on: 5/1/2006 9:34 AM by Author "Rupurt" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=4227101

RE: The ABC myth?
Not all "Tapered Bore" engines are created equal, some will not have a problem running excessivly rich and some will. It depends on clearances, materials, design, fuel etc. To generalise and say running such an engine slobbery rich will destroy it, is incorrect, as is saying the opposite. The best way to find out if running rich will damage your engine is try it[;)]
Posted on: 4/27/2006 1:38 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4213037

RE: Opinions needed-3" spinner on TT .25?
I think the prop tips do most of the work like the last 2/3, I'd say try it and see, although I don't know anything about pylon racers.
Posted on: 4/19/2006 2:04 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=4184679

RE: 160 twin; 12mm Reamer or ?
Never had a prop come loose on mine, its not the best but I drill my props out haven't had any problems yet. The lock nut has a m4 hole tapped in it which is nice for ally spinners.
Posted on: 4/18/2006 6:19 AM by Author "Rupurt" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=4179226

RE: Crank Case Vent
I am not sure extra oil is actually good for ball bearings(to much oil could cause the balls to skid instead of roll) the fuel should have the right amount of oil to start with. Venting the crankcase to the manifold in a car is different as most cars have more than one cylinder and do not have air rushing in and out of the vent in the same way as a model 4 stroke.
Posted on: 10/23/2005 1:19 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3482236

RE: Do you think this is worth saving?
Get a new one and use that for spares
Posted on: 10/22/2005 5:06 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3478744

RE: Making your own exhaust system?
I am not sure what they use it for but I see it a couple of times a week doing circuits close to where I work. I know it isn't traffic control, always the wrong time of day. I will keep the camera ready at work, the place where i work is up on the side of the mountain and this MONSTER flies around at about the same hight as we are. A couple of month's ago I saw a Hawker Hunter come whizzing at that sort of hight, which was nice.
Posted on: 10/11/2005 1:18 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3443735

RE: Making your own exhaust system?
I got a pic of the police one I was talking about(well it looks like a turbo porter) The pic's a little blury, i took it from a moving car.
Posted on: 10/10/2005 11:19 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3440985

RE: Making your own exhaust system?
I would only reduce the ID if you have fuel pressure problems when/if you put a pressure fitting on, as for the vibration you could use a small hose clamp with stiff wire trapped underneath(on the exhaust[8|]) and then secured to the nearest part of the fuse. BTW the storch is looking good, well, as good as it can look anyway[8D]
Posted on: 9/29/2005 1:15 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3404605

RE: Laser 150 Owners Please get your rulers out
http://www.laserengines.com/spec.htm There are some specs here.
Posted on: 9/28/2005 1:31 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3402581

RE: Saito 82 FA bearing replacment
homesickangel, your welcome to PM with any question you think I may be able to answer.
Posted on: 9/28/2005 1:17 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3402557

RE: Saito 82 FA bearing replacment
homesickangel: 1 liter "degummed" castor from Clowns(in Montague gardens) R18 about $3. I don't think you would need more nitro if you change to the "Pink stuff"
Posted on: 9/28/2005 11:55 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3402333

RE: Just curious...
Whats the cut off age, 65?
Posted on: 9/28/2005 9:52 AM by Author "Rupurt" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=3402002

RE: Saito Tools - WOW!
ZAR44= US$6.80 they would probably need a little grinding
Posted on: 9/28/2005 5:41 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3401587

RE: Making your own exhaust system?
Thanks Bill, interesting stuff.
Posted on: 9/27/2005 3:05 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3399263

RE: Making your own exhaust system?
Bill R, is the sleeve valve on that engine similar to the rcv valve setup?
Posted on: 9/27/2005 1:23 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3398945

RE: Making your own exhaust system?
I have the Wren turbo prop plans, to build the engine and only buy the castings will cost around $1000 then you still have to buy oil and fuel pumps and an ecu. I will be getting a fuel pump and ecu for the engine I am busy with so I will use that for both engines. If I ever finish this engine it will go into a 1/4 husky.
Posted on: 9/27/2005 1:19 PM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3398934

RE: Saito Tools - WOW!
homesickangel: Toolquip and allied in maitland has 3-jaw bearing pullers the smallest of which is R44. This is their number 593-9700. The two jaw costs more would you believe[8|]
Posted on: 9/27/2005 11:54 AM by Author "Rupurt" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3398698