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Old Sep 26, 2012, 09:55 PM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
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With respect to RDS, is there a way to help preserve the pocket from wearing out? Some thoughts: polish end of wiper arm or giving the pocket a squirt of graphite powder?
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Old Sep 26, 2012, 10:11 PM
Registered User
San Diego
Joined Aug 2004
2,315 Posts
So far, my most used Fosa's RDS is still pretty tight. This is after a year and a half of what I consider heavy use. I haven't done anything special to the system to protect it. Jiri has done a great job with his RDS system.

Tom
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Old Sep 26, 2012, 10:20 PM
Detail Freak
target's Avatar
Harbor City, CA
Joined Oct 2003
21,859 Posts
Vic-
Just do your best to keep dust and dirt out of the pockets.
A little blast from a can of compressed air with the nose down followed by your dry lube should help keep it young.
SoCal is a harsh dusty environment. Poway is pretty dry, I assume TK might fly there most
Your plane should have it easier compared to that I would think!
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Old Sep 26, 2012, 11:46 PM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
4,060 Posts
Thanks Tom and Target. Tom, I appreciate your real world experiences with the Fosa RDS from a competitive pilot's standpoint. I'd probably have to fly mine for 5 years to get the amount of time you have on yours!! And you're right Target. We are pretty blessed to have some nice slope sites up here. Just wish they weren't 1-3 hrs drive away!

So after a 6 month build hiatus I'm back at it. The home projects are finally done... I want to finish this one up before the Fall flying season is over at Eagle Butte.

I have to say my confidence has gotten better with RDS installs. I'm about finished with the flaps now. I find doing the mock up with the servo powered is very helpful. The servo pretty much positions itself in the optimum spot. Some changes I am making to my build are to give up on plans to use a 1450 LiFe pack w/regulator and go old school 4.8v. Elite 1500 pack. With MKS servos I decided it's not worth worrying about the *what ifs*.

Tom, what did you use to hold your ballast in place?

Vic
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Old Sep 26, 2012, 11:53 PM
Detail Freak
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Harbor City, CA
Joined Oct 2003
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The cone and a piece of wood or foam should keep the load back in the tube.

R,
Target
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Old Sep 27, 2012, 12:19 AM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
4,060 Posts
Ok..think I'll shape some wood rather than getting too fancy...
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Old Sep 27, 2012, 04:18 AM
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lblife's Avatar
USA, CA, Seal Beach
Joined Aug 2010
233 Posts
Both my Fosa's have a lot of time on the F3F coarse and are still very tight
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Old Sep 27, 2012, 11:24 AM
Detail Freak
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Harbor City, CA
Joined Oct 2003
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Quote:
Originally Posted by PDX Slope Pilot View Post
Ok..think I'll shape some wood rather than getting too fancy...
Thats a nice arrangement that Sam has there.
If you keep the plane inverted the cone will keep the block from falling out when a load is in there.
You might add a thread to the block somewhere and attach it to the inner nose with a 6" leash to avoid it dropping out if the cone gets pulled off upright.
The magnet is a nice solution, though, and pouring epoxy in there is an easy way to get a perfect fit. The time you would spend shaping wood gets spent putting tape for a barrier on the parts.

R,
Target
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Old Sep 27, 2012, 03:00 PM
Also known as simon_t
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Kent, England
Joined Nov 2005
275 Posts
I used a wedge of balsa with velcro glued to the bottom face, and the reverse velcro on the 'skijump' of the ballast tube.

Simon
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Old Oct 08, 2012, 10:57 PM
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United States, CA, Los Angeles
Joined Sep 2003
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Flew the Fosa Lift today at fermin, very light lift 10 to 13. Before I arrived I added the fuse slugs, I put a wide piece of rubber band under the last slug and slid it in seemed like it wasn't going anywhere and it didn't. This was my second outing and at 5lbs14oz the plane flew great even in such light air, landing worked out great no sharp rocks. It will be fun to add all of the wing slugs and fly in bigger air. Ian
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Old Oct 09, 2012, 10:09 AM
Detail Freak
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Harbor City, CA
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Fermin at 10-13 isn't really "very light lift" for the rest of the world. Ian you are SPOILED!

Glad it went well.

R,
Target
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Old Oct 14, 2012, 09:07 PM
Bro
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Southern California
Joined Feb 2003
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Fosa/Fosa Lift

Howdy,
Fresh batch of Fosa/Fosa lift for anyone looking for a great model!

Best,
Bob
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Old Oct 22, 2012, 09:12 PM
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United States, CA, Los Angeles
Joined Sep 2003
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Just got back from Point Fermin, blowing a steady 18mph the fosa lift rocks I left with the biggest smile, it bangs turns AWSOME, I just have to learn how to adjust my set up to get the most out of the plane. Ian
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Old Nov 18, 2012, 12:34 PM
Build A Rocket Boys!
PDX Slope Pilot's Avatar
Portland, Oregon
Joined May 2002
4,060 Posts
I opted for MKS 6125e's in my fuselage, but you need to make your own back support for the rear servo since the slide-in support for the 3421/3517 won't work if you want to have access to the servos.
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Old Nov 18, 2012, 01:36 PM
MCS / NCSS / SVSS / LSC / SAM
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United States, CA, Santa Rosa
Joined Jun 2010
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That is just pure "art".
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