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Old Nov 15, 2014, 10:37 AM
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Need for speed, fast flying f3j or f3b

I like to throw in a little acro in between thermals. Nothing puts a smile on my face more that dropping in from spec height, doing an inverted flyby & carrying that energy back up to 100-150 ft, catching another thermal & doing it all over again.

After looking at the current crop of F3j ships I am wondering if they fly fast enough for my liking. I am starting to lean towards a light F3B ship, like a Fosa Lift, but am wondering if they will do a decent enough job at thermalling.

I need to replace an X Pro, Any suggestions?
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Old Nov 15, 2014, 12:26 PM
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The Fosa Lift or Fosa are both good choices. I have a sub 1800 gram Fosa Lift that I special ordered for F3J and I am happy with its performance. At the moment it is the only F3J model I have.

Tom
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Old Nov 15, 2014, 02:47 PM
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[QUOTE]After looking at the current crop of F3j ships, I am wondering if they fly fast enough for my liking[QUOTE]
Thane
Not much fun with the current J crop, try the older ones like Pike Perfect, Aspire, Cluster, Super Starlight.
In lighter conditions their isn't much speed difference to B ships.

Thomas
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Old Nov 15, 2014, 03:04 PM
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I like to throw in a little acro in between thermals. Nothing puts a smile on my face more that dropping in from spec height, doing an inverted flyby & carrying that energy back up to 100-150 ft, catching another thermal & doing it all over again.
sounds like this with a Cluster

Tragi Cluster fun flight (2 min 18 sec)
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Old Nov 15, 2014, 05:54 PM
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Tom, a 1800gr Fosa lift sounds just like what I'm after. Did you get it through Bob @ soaringusa?

Thomas, is that what you were flying at Soar Utah? I remember it looking really good in the light stuff.

Thane
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Old Nov 15, 2014, 06:16 PM
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Yes, but it was special order. It took a long time to get, but it does fly well.
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Old Nov 15, 2014, 06:16 PM
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Originally Posted by Thane63 View Post

Thomas, is that what you were flying at Soar Utah? I remember it looking really good in the light stuff.

Thane
Thane
yup used the Cluster a few times at the south point when wind was light , there is a vid
Tragi / Cluster at SU 2014 (3 min 35 sec)
between DLG's and foam

All depends on you hills / conditions, what's better for you. I'm pretty sure a Cluster stays in the air before a Fosa.

Cheers
Thomas
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Old Nov 15, 2014, 06:56 PM
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A 63 ounce Fosa Lift will definitely hang with some pretty light F3J models and is way faster and more fun than any J model I've seen. It also will out launch any J model.

It is more work to thermal, but it will do it very well if you are experienced flying duration with a B model.
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Old Nov 15, 2014, 06:59 PM
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Originally Posted by wakumann View Post
All depends on you hills / conditions, what's better for you. I'm pretty sure a Cluster stays in the air before a Fosa.

Cheers
Thomas
And though I might not know that well what I'm talkin' about, I would think the J'er would be just a little sweeter to move around in those relatively lazy moments? ehrr.. never mind but for some reason that was my first thoughts.

Cheers too,
Tryggve
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Old Nov 15, 2014, 08:18 PM
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Originally Posted by Kiesling View Post
A 63 ounce Fosa Lift will definitely hang with some pretty light F3J models and is way faster and more fun than any J model I've seen. It also will out launch any J model.

It is more work to thermal, but it will do it very well if you are experienced flying duration with a B model.


Whatever you say, your the Pro

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Old Nov 15, 2014, 08:55 PM
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Espada R is a fun plane to fly like your talking.
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Old Nov 15, 2014, 09:38 PM
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Originally Posted by Kiesling View Post
A 63 ounce Fosa Lift will definitely hang with some pretty light F3J models and is way faster and more fun than any J model I've seen. It also will out launch any J model.

It is more work to thermal, but it will do it very well if you are experienced flying duration with a B model.
Maybe it is possible for a Fosa (or other F3B plane) to outlaunch a J plane on an F3B winch, especially in strong wind conditions. I'd be very surprised if the Fosa would outlaunch a J plane on a handtow.

For acro/fun/speed/thermal, a light Fosa is perfect. For serious thermal work, I would want to fly a plane designed and optimized for the task. I've seen a few people using F3B planes in the wind instead of the appropriate F3J plane. The advantage usually goes to the F3J plane.
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Old Nov 15, 2014, 10:14 PM
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Joe,

My only experience with hand own was with my standard layup Fosa in South Africa. I was more than happy with my launch heights there - even in lighter winds. Downwind launches are a problem even off a winch with the standard layup. Even with the light layup Fosa Lift down wind launches are tough. But then again those conditions are tough for J models too. In no wind conditions the light Fosa Lift launched well against J models at last weekends contest using "J" winches. It wouldn't hang with the sub 60 ounce 4 meter Explorers at 8:30 AM, but it didn't do too bad. The biggest drawback to the B model is precise landings. With more practice I hope to get there, but only time will tell. In the mean time I plan on having a lot of fun with my little experiment . . .

To the op question, I stand by my statement that a light Fosa Lift would be an excellent choice for a plane that thermals well and is fun to fly on the way back down. In heavy conditions you can add ballast and really have some fun.

Tom
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Old Nov 16, 2014, 12:26 AM
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I guess it comes down to how a heavily ballasted F3j ship would compare to a lighter F3B ship at retaining energy. From spec height, I'm thinking the cleaner F3B ship would come out of a dive at a higher rate of speed & be able to convert that speed into a larger altitude gain. But, an argument could also be made that a heavily ballasted F3j ship could carry that energy just as well. What would thermal better, a light F3B or a heavily ballasted F3J?

It's like I need something in the middle.
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Old Nov 16, 2014, 09:25 AM
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Quote:
Originally Posted by Thane63 View Post
I like to throw in a little acro in between thermals. Nothing puts a smile on my face more that dropping in from spec height, doing an inverted flyby & carrying that energy back up to 100-150 ft, catching another thermal & doing it all over again.
so you like to thermal
and you like speed runs
thats 2x of the 3x F3B tasks - which F3B planes are designed to do well
(they are also pretty good at aerobatics)

if you are only getting back 100-150ft height after a dive from spec height, you're definitely flying the wrong sort of plane - F3B plane will do way better than that

Phil.
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