hop up os 46 fx - Page 3 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 01-11-2004, 07:23 PM   #21
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Andrew, just call him "Dad". You'll get used to it!

Just how much do these Jet engines cost?

Ron Mattiuz

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Old 01-11-2004, 07:31 PM   #22
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Bar Stock .50 is currently $310 US plus shipping.

Thats approx. $480 Canadian right now landed to your door.

Yes, its expensive. But man, they are one sweet engine. Some people say spending $500 on a .46 or 50 size engine is CRAZY... but look at it this way... its like comparing a new DA 50 to a Zenoah 45.
Andrew Coholic -MAAC #26287L

1/2A to giant scale, IMAC, SAM, R/C sport, turbine jets, Heli's...
if its got a wing or two and an engine - I like it!
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Old 01-12-2004, 04:20 PM   #23
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Maybe were missing somthing here,,,

I don't know about this. We have the resident "Tim Taylor" at our field. He is always yelling more power. Last year after he fried a motor ( his reason is poor quality of motor,, the real reason is it was toooooo lean!!!)he decided to turn an LT-40 into a pylon racer. My point is this,, power comes in many forms. If you want to hover,, you need umphff and not top speed. More diameter and less pitch. If top speed is your goal,, more pitch less diameter. Just a thought,, but I don't see the need to gain RPM unless your making use of what you already have.
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Old 01-12-2004, 06:07 PM   #24
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Father-in-Law ... sheesh, now that you mention it Andrew, it sounds weird. When I lived in KL we were flying buddies, and obviously Rachels' buddy , and I was in the dark, just kiddin
Yes, I have the Jett BSE 50. Currently it's still breaking in, I run a 9x6 prop (that's right a 9x6). Dubb specifically states not to load the engine on breakin AND that they love RPM! Load is the enemy here. So, soon will move up to a bigger prop. Regarding the OS 46 hop up ... I think if a fellow does a few mods to the engine one can get away with it. The 46 is rated for 17000 RPM. In my opinion the internals are built well. As I mentioned before it has a head shim, .008". Remove it and run it up, tach it. See what you get. In order to avoid a blown plug install an A3 right off the bat. Try 10% and then some 15%. The tach will soon tell you. For some nice gains though a pipe will really help. If you can pick up a thousand rpm's and move up a pitch size the engine won't self destruct. The worst enemy is of course too lean, so don't tweak the needle too much. Bryan and myself have been doing some performance mods on an OS 25 fx and getting some very respectable gains! Gosh, it's like we're almost scaring this guy away from doing any mods to his engine. The only way to learn is to try.

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Old 01-12-2004, 07:21 PM   #25
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I am excited about the testing Frank and myself are doing on my os 25 fx. I wouldn't belive it but we picked up alot (2200)rpm by adding a tuned pipe. over a stock engine. Right know we are still testing different combinations with prop, fuel, carb etc. The ultimate test will be the first test flight of the now hopped up engine Should be exciting!
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