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Need a hot 15-25

Old 08-30-2006, 07:56 PM
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stupidaso
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Default Need a hot 15-25

I'm looking for a high performance 0.15 to 0.25 size engine, either aero or ducted fan. I would really like a ducted fan 0.18 or so, but am having a heck of a time finding one, new or used.

Can anyone steer me in the right direction?

Thank you!
Stu
Old 08-31-2006, 03:48 AM
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dennis
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Default RE: Need a hot 15-25

http://home.arcor.de/fesselflug/html...wmspanienvideo

The fastest 15 sized motors made in the USA are made by Henry Nelson. Bear in mind that fast high performance motors are not cheap and these will cost around $250.00. There are Fora 15's sold by George cleveland, and quite a few great motors from the eastern block. Most of these are for flat out high performance running and do not have a throttle.Face it a hot motor really does not idle very well if at all. Best info is found from the C/l speed and Free Flight web sites as these fellows use these motors on a regular basis and have a lot more knowledge then most of the R/C crowd.
Bear in mind that these motors while powerful beyond your expectations are not for the inexperienced. You can ruin high precision motors by ham fisted tweaking. In other words there is a learning curve and some experimentation on prop and fuels for each particular application.
The link is for a German site. If you have broad band you'll enjoy the C/L combat and racing vidios taken at the world championship meet in Spain.
Check out the F2D action on a few and turn up the volume and enjoy some motors turning 30K plus.
Dennis
Old 08-31-2006, 07:20 AM
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DarZeelon
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Default RE: Need a hot 15-25

Brian,


I wouldn't dare use the screen name you selected...

MVVS has a 2.5 cc engine (.15), which is capable of exceeding 25,000 RPM, or over 22,000 RPM as it comes, with the original MVVS tuned silencer.

This engine is quite inexpensive and has a durable, true ABC construction.

E-mail me if you want to know more.
Old 08-31-2006, 10:01 PM
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NM2K
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Default RE: Need a hot 15-25


ORIGINAL: stupidaso

I'm looking for a high performance 0.15 to 0.25 size engine, either aero or ducted fan. I would really like a ducted fan 0.18 or so, but am having a heck of a time finding one, new or used.

Can anyone steer me in the right direction?

Thank you!
Stu

--------------------


The Fox .25BB, or its predecessor, the Fox .19BB, is a very hot sport engine (aero). While it is not in the ducted fan class, it does some things that the ducted fan engines will not do with a prop - like idle nice and low. It also does not need a tuned pipe to run well, but a pipe wouldn't hurt.

I've seen them for $62 plus shipping on eBay recently. These were new engines. Be prepared to use castor oil in this engine if you buy it. It will tolerate some synthetic, but I wouldn't push it.
Old 08-31-2006, 10:27 PM
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RaceCity
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Default RE: Need a hot 15-25

I'll second Artisan's comments on the Fox .25BB. One of the most under-rated engines in that size range. Absolutely screams on 5% nitro and 20-25% oil. Incredible fuel economy, lightweight, and very user friendly.



Old 09-01-2006, 11:22 AM
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stupidaso
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Default RE: Need a hot 15-25

Thanks for all the info, I'll look further into it.
I'ver heard mvvs are strong, but rather heavy for their size. This app is a small aircraft,so the fox may be a better choice.

Thanks again,
Stu
Old 09-01-2006, 11:32 AM
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RaceCity
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Default RE: Need a hot 15-25

MVVS isn't heavy for it's size BTW. Compare an MVVS to the competition and the weight differences pretty much disappear into thin air. Talk is talk...the scale tells a different story.

MVVS is competitive "weight wise" to it's competion when the other guy installs the muffler! Noticeably lighter in many cases.

Fox however IS lighter than all of them. The .25BB comes in around 8.5-9.0oz all up. Either way you'd be happy.
Old 09-01-2006, 03:46 PM
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j.duncker
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Default RE: Need a hot 15-25

MVVS also do a 20. Best used with a mini pipe if you want peak power.

I use them for 1/12 scale combat and am usually the fastest kid on the block.
Old 09-01-2006, 04:48 PM
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steveukflyer
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Default RE: Need a hot 15-25

Enya ss15bb will hover a near 4lb plane

http://www.servoshop.co.uk/index.php...N&area=Engines

might be worth a look

Steve
Old 09-01-2006, 06:17 PM
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sparky577
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Default RE: Need a hot 15-25

I would recommend an OS .15 CV-A My old club used them in their combat planes. A 7x4 prop will make it come alive, especially with a tuned pipe.
Old 09-01-2006, 08:14 PM
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Default RE: Need a hot 15-25

Last year picked up an Irvine 15 rear exhaust. This is either car or plane. the plane version just has the car head chopped down
think about $100 from just engines as special buy might be worth a call to see if any left uses an extended prop nut in aero version
mine running a custom diesel head from A.J. Coholic it is a very quick diesel MVVS minnie pipe martin

it is twin BB ABC
Old 09-01-2006, 09:25 PM
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Default RE: Need a hot 15-25

K&B makes (made) a rear exhaust .21 in aero and ducted fan configurations. I picked up two never rum aero ones off of ebay last year. I put one of them on my .10 size Shrike. I turns a 7x8 APC over 18K RPMs.
Old 09-02-2006, 11:36 AM
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Red B.
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Default RE: Need a hot 15-25

For pure, high RPM power the Italian NOVAROSSI is hard to beat.

The claimed power output for the .28 cu.in. N528F (below, left)) is 2.8 bhp @ 32800 rpm.
I don't know if the power output is correct, but I have seen (or rather heard) one of these engines in a small Saab Gripen D/F model. Performance was almost jet like and the sound... , I think it is best described as a high pitched whine rather than the typical noise heard from D/F engines.

There are also .20 and a .12 engines available. The claimed power output of the .12 RS12F is 1.2 bhp @ 40000 rpm (below, right)! I would love to see this engine running.

Unfortunately these engines are rather expensive. I don't know if they are sold in the U.S., but as a guesstimate expect to pay around $400 for the N528F

/Red B.
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Old 09-02-2006, 12:43 PM
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Default RE: Need a hot 15-25

(CBS) Stu.... is that you?

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