3W Bearcat with Moki 300
10-13-2024, 01:17 AM
#551
My Feedback: (7)
This is the last little detail getting attended to. I said I'd probably recess the cowling to allow more hot air exit so I did. Surprisingly I don't have any problem with all the modifications to the bottom of the fuselage to let the hot air out. And now I suspect that I have - nearly - enough! I say that because I doubt it would be quite enough if I planned to operate at full throttle the whole time but I will NOT be blasting around at more than 255 kph for entire flights. More like half to 3/4 power most of the time and my cooling system should be fine for that.
In the background you see how this scalloped out area will now join with the recessed fuselage air trough to facilitate lots of air exit.
In the background you see how this scalloped out area will now join with the recessed fuselage air trough to facilitate lots of air exit.
10-13-2024, 10:07 PM
#553
Mitch,
I press my thumbs.
Everything looks good, you built and finished her very carefully.
The weight- dont care. you will not notice it at all.
Let her pickup speed, gently accelerating her, dont pull too much (!!) , and thats it. Ourr BC has not tendency at all to nose-over. Better thatn the original BC from 3 W with the short legs, as our wheels are further forward. Al I feared proved to be not happening.
Generally she flies like a warbird- trainer, although a slightly overpowerded one :-)
That thing can handle ANYTHING you throw at her
Good luck
I press my thumbs.
Everything looks good, you built and finished her very carefully.
The weight- dont care. you will not notice it at all.
Let her pickup speed, gently accelerating her, dont pull too much (!!) , and thats it. Ourr BC has not tendency at all to nose-over. Better thatn the original BC from 3 W with the short legs, as our wheels are further forward. Al I feared proved to be not happening.
Generally she flies like a warbird- trainer, although a slightly overpowerded one :-)
That thing can handle ANYTHING you throw at her
Good luck
10-14-2024, 07:32 AM
#554
My Feedback: (7)
Mitch,
I press my thumbs.
Everything looks good, you built and finished her very carefully.
The weight- dont care. you will not notice it at all.
Let her pickup speed, gently accelerating her, dont pull too much (!!) , and thats it. Ourr BC has not tendency at all to nose-over. Better thatn the original BC from 3 W with the short legs, as our wheels are further forward. Al I feared proved to be not happening.
Generally she flies like a warbird- trainer, although a slightly overpowerded one :-)
That thing can handle ANYTHING you throw at her
Good luck
I press my thumbs.
Everything looks good, you built and finished her very carefully.
The weight- dont care. you will not notice it at all.
Let her pickup speed, gently accelerating her, dont pull too much (!!) , and thats it. Ourr BC has not tendency at all to nose-over. Better thatn the original BC from 3 W with the short legs, as our wheels are further forward. Al I feared proved to be not happening.
Generally she flies like a warbird- trainer, although a slightly overpowerded one :-)
That thing can handle ANYTHING you throw at her
Good luck
10-19-2024, 09:33 AM
#555
My Feedback: (7)
Took her out to the field today to run/taxi. I now turn on ignition and fuel pump and pull blades thru until I get a pop. After a pop I TURN OFF the pump and start flipping to start. Today however, I turned on the ignition and pump and pulled a lot of blades - never got a pop. I didn't want to prime it thus anymore so I turned off the pump, left the ignition on and started flipping. It took quite a bit of propping but it did start. Not sure why I never got a "prime pop." Maybe it takes more blades but I'm deathly afraid of flooding it.
Later in the day I shut her down and let it cool to "just warm" and attempted another start. Pump/ignition on - no choke - and maybe 10 blades and she fired up. Obviously it's going to take me a while to learn her personality. I will say this, once running it just runs fantastic! Smooth, responsive and not sensitive to needle adjustments at all. I'm still breaking her in so I backed her off an eighth turn from max rpm to get the 3700 rpm I wound up with at full power.
There's nothing left to do but put the cowl back on, tighten the prop hub bolts (for the second time) and go fly. I do, however have to accomplish the "over 55 Pounds" Large Model Aircraft paperwork before the maiden flight.
Later in the day I shut her down and let it cool to "just warm" and attempted another start. Pump/ignition on - no choke - and maybe 10 blades and she fired up. Obviously it's going to take me a while to learn her personality. I will say this, once running it just runs fantastic! Smooth, responsive and not sensitive to needle adjustments at all. I'm still breaking her in so I backed her off an eighth turn from max rpm to get the 3700 rpm I wound up with at full power.
There's nothing left to do but put the cowl back on, tighten the prop hub bolts (for the second time) and go fly. I do, however have to accomplish the "over 55 Pounds" Large Model Aircraft paperwork before the maiden flight.
Last edited by mitchilito; 10-19-2024 at 09:41 AM.
Today, 03:41 AM
#556
My Feedback: (7)
Every single thing on this Cat is either safety wired, has a locking nut, locktite compound OR in some case both! Here's how I handled locking the prop bolt and also how I arranged the "exhaust valve oiling system" plumbing:
The oil line just exits the bracket towards the front. When the cowl is on it naturally wants to truck right into front rim. Note nifty red cap.
There's just enough room between the spinner and cowl to slip a finger in and pop it out to inject oil intto the manifold.
I drilled safety wire holes into one of the prop hub bolts and use it as the anchor for the main prop bolt safety wire.
The oil line just exits the bracket towards the front. When the cowl is on it naturally wants to truck right into front rim. Note nifty red cap.
There's just enough room between the spinner and cowl to slip a finger in and pop it out to inject oil intto the manifold.
I drilled safety wire holes into one of the prop hub bolts and use it as the anchor for the main prop bolt safety wire.
