Official FMS 1400mm P-51D V8 Thread

[Hawker_Hurricane]

new to HS I like all the buzz about the 460KV and 550KV on 6s....don't own this model yet trying to decide between this one and the 1.5meter 47 any thoughts?

[Grossman56]

Thanks guys, its one of those things, I really can't complain as I have literally hundreds of flights on her. In hindsight, I could have hit the gyro switch and disengaged her, but in the moment, it was all I could do to wrestle with her while trying to get the gear down.
A Flightline P-51B would be awesome though...

Grossman56

[Drake]

Sorry Grossman, that was a gorgeous bird.

[apmech1]

Sorry to hear that. Thanks for sharing though. That is one of those things that is easily overlooked.

[Hardway]

:(:(:(:( Sorry!!

[boomer108]

Sorry to hear Gman but thanks for the tip I have A-3 gyro's in all mine to but never thought to check the tape in fact your the one that gave me the idea to use the heavy duty tape. I don't like flying my P-51B Dallas Darling it's irreplaceable.

[Boots Whirlygig]

:(:Crying:

[OV10]

Time to start beatin the FL 1600 Stang drum ;)and forget about FMS :P
Remember, they ALL have an expiration date :(

[Grossman56]

Definitely sucks!!
I know how CB felt when the OV-10 was gone, jus t stumbled across these from last Fall, this was before My Little Gal got rebuilt....



Now, hopefully, BBD doesn't go down, she's irreplaceable too

Grossman56

[Lon]

:(Sorry to hear Dan....

[Grossman56]

This pains me to say it, but on Tuesday I lost my P-51B Shangrila:(...
She was flying in her usual great way, I came out of a loop and was bringing her around to drop gear and land when all of a sudden, she was bucking and extremely difficult to control, totally not her. Got the gear and flaps down and tried to line her up with the runway, but man I was fighting her to try to level out, almost like a near stall, but she had plenty of speed. Before I could get her under control, she lawn darted, spun right into the ground a total right off:Crying::Crying:...
This is a bird that I've flown steadily for the past 4 years, the first warbird I ever flew and the first spray paint job I ever did. She meant a lot to me, the most I've replaced on her was the tires last year, talk about a great airplane!!

God knows how many flights I have on her and worse, they don't make them any more!!!
Post crash analysis revealed that the gyro had come loose, explaining why the poor control. I installed that gyro 4 years ago when I originally built her and never paid that much attention to that aspect of preflight checks, but in hindsight, tape does tend to lose its grip over time, so I went through the whole fleet to ensure that this doesn't happen again. Rotten way to lose such a great plane, so I'm passing this on hoping it saves one of you guys from having to lose a great airplane....


By Old Girl, you'll be missed...…

Grossman56

[prestonowtm]

Yes...I kept the 4 blades on it. Was a little of a bitch to balance with the 4000 in it but I did get 4 min out of it. That 650 must pull a lot of power..ran the same batteries through the BB Doll that is stock and it dropped in with 47% at 4.30. The good thing so far is the caulk sealing that I did on the wings to the fuse and the underside is all holding up nice with about 10 flights on it now and I think it looks a lot better without those black lines..looks a lot smoother.

[Grossman56]

NO! 4 blades all the way, anything else would be sacrilegious!!

Grossman56

[OV10]

A 3 blade on a Stang :Scared:go rub that tongue on some soapLOL Time to battery up as you said. Reread what I said two posts back on #1150............4000mAh ;)

[prestonowtm]

Suppose its time to battery up again and try it. I flew the BB doll with the 2500 and it came down with 38% at 4.30. That 650 eats battery time I suppose. I did leave the stock 4 blade on it. Are you guys switching out to the 3 blade P40 when you do this mod?

[Grossman56]

Hey Grossman...what batteries are or did you use in the P51 with the 650 in it? I am using the admirals 2500 and 3000 30c and 35c..damn near ran the rebuilt plane into the ground. I left my timer the same as its been for years at 4.30 low voltage kicked in and I brought it in quick at about 3.3 min..batt was at 10%...HOLY wow. I wasn't flying it that hard either for the maiden. With the old setup I would bring it in at a little more than 4 min with 35 to 45% left.

I run Admiral 3600 PRO series 99% of the time, Occasionally, I'll run an Admiral 4000 and consistently get great flight times (5 min +), some of my batteries are 4 years old. I've never tried anything less than 3600, I like a fairly large gas tank!!

Grossman56

[OV10]

Hey Grossman...what batteries are or did you use in the P51 with the 650 in it? I am using the admirals 2500 and 3000 30c and 35c..damn near ran the rebuilt plane into the ground. I left my timer the same as its been for years at 4.30 low voltage kicked in and I brought it in quick at about 3.3 min..batt was at 10%...HOLY wow. I wasn't flying it that hard either for the maiden. With the old setup I would bring it in at a little more than 4 min with 35 to 45% left.

Presto............those 25-30 size batts are a small gas tank for the higher amp hog 650 motor.
My 1400 FMS Corsair and Mustang with the 650 uses 4000mAh batts with an on the deck time of 6 min.
Now if you want the extended flight times with more power then do the 1500 FMS P-47 460 motor.
A 4000 6S batt gets you more performance with 8 minutes of flight.:Cool:

[prestonowtm]

Did you check the charge on the battery before you put it in the plane.

Always..when I fly its part of my pocket tools. Both batteries were at 98% or 99%...I flew it twice. Once with the 2500, then with the 3000. Little difference at all. Neither battery is old but I did mark them to try them in another plane to make sure.

[boomer108]

Hey Grossman...what batteries are or did you use in the P51 with the 650 in it? I am using the admirals 2500 and 3000 30c and 35c..damn near ran the rebuilt plane into the ground. I left my timer the same as its been for years at 4.30 low voltage kicked in and I brought it in quick at about 3.3 min..batt was at 10%...HOLY wow. I wasn't flying it that hard either for the maiden. With the old setup I would bring it in at a little more than 4 min with 35 to 45% left.

Did you check the charge on the battery before you put it in the plane.

[prestonowtm]

Well, maybe so Boots, but I have 650's in mine spinning the stock 4 bladed props and it works amazingly well. With BBD, I upgraded to 580 and then to 650 and there was an improvement albeit not a huge one. When I went directly from the 540 to the 650 in Shangrila it was a much bigger difference. BTW, I use Mantis 85A ESC's in them all (Don't forget the short ESC to Motor cables if you go this route. Order extensions). I agree that the 6s system from the P-47 would rock in the P-51, its awesome in the P-40. Now, that is the reverse to what you describe because I went from the stock 4 blade prop that powered the P-47 to the 3 blade prop that the P-40 uses. Now, CB changed out his prop on his P-40 because he had some issues with the stock prop when doing a power dive, if I remember correctly.
Bottom line is that all these systems will work on the P-51, just a matter of picking a route to finding your joy.

Grossman56

Hey Grossman...what batteries are or did you use in the P51 with the 650 in it? I am using the admirals 2500 and 3000 30c and 35c..damn near ran the rebuilt plane into the ground. I left my timer the same as its been for years at 4.30 low voltage kicked in and I brought it in quick at about 3.3 min..batt was at 10%...HOLY wow. I wasn't flying it that hard either for the maiden. With the old setup I would bring it in at a little more than 4 min with 35 to 45% left.