Record Breaker Refurb
 

This is my 15 year old Record Breaker. Hasn't flown for around 10 years but decided to sort it out, recover and get it going again. There was nothing wrong with the airframe (it did have a mid-air in its earlier life but survived with a broken wing spar and slight fuse damage behind the wing) As the old Solartex covering was ageing I decided to recover it and at the same time check out the airframe for any issues. It will be covered in Vintage Yellow Solartex with blue paint trim. An OS 52 FS will power it.

The only small change I will make is the rudder will be pull pull wires as opposed to the original pushrod, the elevator will remain as a pushrod.
Hopefully this time I will have a better go of trimming the plane out. Never really got the plane flying as I wished last time, hence the storage in the attic. Bruce (BMatthews) has given me great advice of vintage plane trimming so hopefully this time I will get it sorted. http://www.rcuniverse.com/forum/atta...mentid=2155341

My Record Breaker is over 20 years old,she still flies with an old OS open rocker 60 F.S. I love this old crate,I take it to summer family gatherings,and I let the kids fly it.Best trainer on the planet.Mine is covered in Mica film,very light,my plan is under 5 pounds.jeffo

http://www.rcuniverse.com/forum/atta...mentid=2156426I've flown mine for probably 15 years. The elevator trim really has about three ranges depending on speed. The plane is overpowered and becomes unstable if I fly too fast. Looks ridiculous also.

Hey. I just acquired a mostly finished, never flown Record Breaker and have a couple questions. I'm wondering where the CG should be. I know other oldtimers with an under-cambered wing generally have the CG farther back. Also there was about 8 oz. of lead in the nose which I really don't want to have. I've installed an open rocker OS .60 which according to the thread should be about right, though it won't set any records gaining altitude. Our club occasionally has climb and glide contests with a 30-40 second climb. Most flyers now use electric power and can go OOS in half that time. No fair. Thanks for any answer. :)

Rod

LRB CG should be around 50% of the chord from the leading edge to start. If you are going to fly one like it's supposed to flown,I.E. Climb and glide, not like a sport power plane then you can scootch the CG back some to 60% ish.
It has nothing to do with the undercamber wing but rather the 'lifting' horizontal stabilizer. I just finished refurbing my 43 year old LRB and converted it to R/C and electric, it was Free Flight powered by an O&R .60

Thanks for responding Soar. What you say makes sense, when I think about it. I'm looking for a relaxing plane to just float around and catch some thermals, so I'll plan to start at 50 percent and maybe then move it back a tad. Happy soaring.

I've nearly finished the refurb, now waiting for some calm conditions. Engine was changed to the original OS 61 FS, now with new bearings. Will post pictures and flight report in due course.

Wow! I see you started this thread over 2 years ago. If nothing else your're persistent. Yes pictures please.
I've been enjoying my RB. Hot thermals are in the forecast. The OS FS 61 should be the perfect engine. Heck they were good enough to power the first RC plane across the Atlantic.

I have had other projects on the go, even so recovering took quite a lot of work.....its a big airframe. Covered in yellow antique (semi transparent) Solartex with blue trim. Starting the CG at 6 1/4" back from LE. Looks calm this weekend.

https://cimg8.ibsrv.net/gimg/www.rcu...bd2d23dee1.jpg
Had engine problems with the OS 61 last weekend. Got enough of a run (90 secs or so) to get airborne and had a decent glide of around 15 minutes. Plenty of thermals around it seemed. Flew today as well, had in the meantime changed the engine to an OS 56 FS, which had its own difficulties. Didn't like running near the idle for any length of time so had a few flights (like last weekend) that allowed the plane to get to height and then glide around. Thermals absent today, or at least I couldn't find any. It was windy today but turn the plane into the wind and it would almost just hang there.

Very nice looking aircraft. Great workmanship.