Re: Read all about model hobbies

Jan 07, 2006 4 Replies
T

I didn't see anything about airplanes. I think that is what this newsgroup is about right? "rec.models.rc.air"


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F

He pretty much spammed most of the NG's I read. Dont see anything about soaring either.

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"

Hell, he doesn't know diddly about land vehix either. Read this:

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230* as the max temperature when racing? Bwahahahahahaha! I've been running and racing nitro land vehix for some time and have never owned a motor that even idled at that temperature. Normal, healthy operating temps for a run-of-the-mill motor are between 250*-280* with the 7-port racing motors easily exceeding 300*. I have one motor now that isn't happy unless it's running +280*; on long mains it'll easily hit 310*. After 7 gallons of fuel I haven't lost a single psi of compression running at those temps.

I know engine temp isn't a big issue with airplanes due to propwash, but with land vehix engine temp is crucial per way of tuning and engine life.

Doc

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T

Hey Doc, do you get a free fring pan with that engine when you buy it ? lmao. Hey if it works, drive/fly/beat the s*it out of it and have fun, lol. Hell whats an engine worth these days? The average guy probably spends more on fuel per year than an engine is worth.

Hey check out this video, 200 mph with a fuel powered model car

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No frying pan but my last motor came with a dozen eggs and some bacon! Your average big block motor (.21-.28) for a Monster/Truggy/Buggy runs around $150. The high perf motors (7-port racers, Italian motors, .32 mills) will run $200-$300.

What most folks don't realize is that land mills are much more powerful than airplane motors. Your average .25 airplane motor is around 1.0 HP @ 15,000 RPM. I have a .25 right now that is 2.5 HP @ 37,000 RPM and a .26 rated

2.75HP @ 36,000 RPM. With that amount of compression and RPM they're gunna run a wee bit hotter than 230*.

I run O'Donnels 20%, and at $24.99 a gallon, I spent around $249.99 in fuel last year, so you're right, more $$$ in fuel than in the motor!

That vid is crazy! There's another one floating around on the net of a modified 1/10 touring car hitting 120mph, tested on an airfield runway.

Doc

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