Ressurection of a BRM

Hey Ron, could you try downsizing your pictures a little? They are quite large, and the only way I can see them is by downloading it.

microflitedude wrote:Hey Ron, could you try downsizing your pictures a little? They are quite large, and the only way I can see them is by downloading it.

He puts the link under it. Or, right click and select View Image.

I'm only seeing the mota too.

Once downloaded tho it looks Wundabar Ron.

Thanks Guys,

It now sports ply doublers, glassed in nose and epoxied firewall. I also epoxied and glassed the LE and TE where they split.Hopefully she can now withstand the rigors of my training.

I will try and figure out the picture issue.

Just a quick update, I put the BRM through it's paces last night, it seems to fly much better with nice tight loops. I also went inverted for a couple seconds and then flipped topside and put it into the ground

Things just seem to be happening too fast! I am having trouble getting my bearings from time to time. Good news is the nose held really well even after it came in under full speed.

I had a 6x3 on it to slow it down some. I have a 6x2 and I wonder if that would slow it down enough while still providing enough torque to stunt.

Guess the only way to find out is to try it.

Hello Ron, I myself was never quite happy with the run of the 6x2. I had a black Cox 6x2 and also a APC 6x2. Both props did nothing more than beat the air. The only way to know is to try it, you may just like it. They had no drive for me and the engine sounded like it was gonna launch the piston. I certainly would even try and launch a bit richer to try and keep things a bit more steady. Even adding additional head shims will tame the power and probably even give you better fuel economy. You would have to lean the engine a tad more to regain the power which is why the economy would increase. Going out on line length an additional 2' or so could also help if possible. Ken

Ken Cook wrote: Hello Ron, I myself was never quite happy with the run of the 6x2. I had a black Cox 6x2 and also a APC 6x2. Both props did nothing more than beat the air. The only way to know is to try it, you may just like it. They had no drive for me and the engine sounded like it was gonna launch the piston. I certainly would even try and launch a bit richer to try and keep things a bit more steady. Even adding additional head shims will tame the power and probably even give you better fuel economy. You would have to lean the engine a tad more to regain the power which is why the economy would increase. Going out on line length an additional 2' or so could also help if possible. Ken

Ok Ken,

I guess it's time to do some experimenting. Problem with Cox engines is that they get cranky when they run slow. Sometimes even cutting out. I am sure it can be done. I could also just put the Babe Bee back on. I need to fuel proof the Bean and see if it works better.

I also need to set up another handle at 35' I am at 30ish right now. I have to be careful as there is a large Elm that likes to eat little planes looming in the background.

Maybe try a 6x4 and really richen it up Ron. It should have plenty of pull even blubbering rich. Short flight time, but it would allow you to get some easy circuts in,,so you can stay ahead and increase your experience.

PV Pilot wrote:Maybe try a 6x4 and really richen it up Ron. It should have plenty of pull even blubbering rich. Short flight time, but it would allow you to get some easy circuts in,,so you can stay ahead and increase your experience.

I think I have some of those. I also have some 5.5x4s and Tornado 5x4's so I suppose I have options.

cribbs74 wrote:

Things just seem to be happening too fast! I am having trouble getting my bearings from time to time

Ron:

Ah, yes same for me with my BRM/TD .051 combo on 35 foot lines! Actually my problem is keeping rather than getting my bearings. I start out fine but THEN............

Thus my interest in larger and slower 1/2A stunters like the "Pinto" by RSM.

cribbs74 wrote:

PV Pilot wrote:Maybe try a 6x4 and really richen it up Ron. It should have plenty of pull even blubbering rich. Short flight time, but it would allow you to get some easy circuts in,,so you can stay ahead and increase your experience.

I think I have some of those. I also have some 5.5x4s and Tornado 5x4's so I suppose I have options.

There ya go!. Each plane flys differently, so you have to learn all of there characteristics. But once you have baseline experience of what you need to do, all the rest falls into place.

Mindset and preparation,,get into your zen mode before flight,,see the plane in flight beforehand. You ever watch the Blue Angels or Thunderbirds and see there prep meeting before a show?. Once they get done talking about the show, they go thru there flight ritual, envisioning the moves and call outs buy the lead pilot,,all with there eyes closed and waving there hands as they envision the flight.

Ok, before you all start laughing and guffawing at PV Pilot because he has obviously fallen off the deep end year ago (yes, I Know), It really does help to envision the flight beforehand. Maybe not taking to the extreme as the demonstration teams do, but a more subtle version of the same thing. Talk your self(quietly) thru the flight, call out or envision your next move. Try not to allow the fast heartbeat excitement to override the grey mass on top.

Keith:

Very Zen indeed! During CL flight I chant Ohmmmmmmmmmm.......................

PV Pilot wrote:

cribbs74 wrote:

PV Pilot wrote:Maybe try a 6x4 and really richen it up Ron. It should have plenty of pull even blubbering rich. Short flight time, but it would allow you to get some easy circuts in,,so you can stay ahead and increase your experience.

I think I have some of those. I also have some 5.5x4s and Tornado 5x4's so I suppose I have options.

There ya go!. Each plane flys differently, so you have to learn all of there characteristics. But once you have baseline experience of what you need to do, all the rest falls into place.

Mindset and preparation,,get into your zen mode before flight,,see the plane in flight beforehand. You ever watch the Blue Angels or Thunderbirds and see there prep meeting before a show?. Once they get done talking about the show, they go thru there flight ritual, envisioning the moves and call outs buy the lead pilot,,all with there eyes closed and waving there hands as they envision the flight.

Ok, before you all start laughing and guffawing at PV Pilot because he has obviously fallen off the deep end year ago (yes, I Know), It really does help to envision the flight beforehand. Maybe not taking to the extreme as the demonstration teams do, but a more subtle version of the same thing. Talk your self(quietly) thru the flight, call out or envision your next move. Try not to allow the fast heartbeat excitement to override the grey mass on top.

Feel the Ring, Be the Ring.......

Actually, I get what you are saying and it makes sense. I do visualize what I am trying to do beforehand. Unfortunately the connection from my brain to my elbow/wrist has an intermittent disconnect.

I don't have anything to add that might help except, if your lines are 30'ish, you definitely need 35' There is a big difference in ease of control. Add a couple of feet for your arm and the difference in circumference is about 33'. That's a 232' circle as opposed to a 201' circle.

Other than that, you just need practice. CL is just inherently unpredictable and requires reflexive muscle memory that can work the plane faster than your conscious brain can. Keep at it and you will improve quickly. After I take a Winter break, I always get amped up and excited and then run out to the field and crash a plane.

cribbs74 wrote: I also need to set up another handle at 35' I am at 30ish right now. I have to be careful as there is a large Elm that likes to eat little planes looming in the background.

Use a marker, such as a handkerchief, to mark the center of the circle so you won't wander.

Good luck,

George

Ron:

Metaphorically, learning CL flying is like playing golf: practice, practice, practice and along the way you will improve! In the process you most certainly crash a few times as I did.

Once they're developed the reflexes will be never be forgotten. After a hiatus of over thirty years, save for the shaky knees, I came into the circle with confidence.

"Like riding a bicycle..."