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Old Aug 17, 2015, 02:49 PM
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All you can do is edit the post, delete everything, and type in 3 periods to get minimum length for a post...
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Old Aug 17, 2015, 05:54 PM
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Rake your gear forwards and you can remove - at least greatly reduce - nose overs.

I think I used 3mm spacing on the rear of the retracts.... and by the leg/wheel end that is more like 10mm, or maybe it was 7mm.
But it makes a BIG difference.
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Old Aug 18, 2015, 01:07 AM
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I tried the rake, but had to cut some of the plastic that makes the doors go open by the gear, but had to revert to original cause I coudn't get it right Wheels came to high so the doors wouldn't close anymore.

I can prevent the nose-over though by keeping some throttle during roll-out to full stop after the landing.
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Old Aug 18, 2015, 07:40 AM
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The doors clear by 7mm to 10mm, so that much rake makes zero difference to the whole setup and its operation.
Oh... I did cut the 'rails' that drive the doors via the leg moldings, but that is actually something that needs doing even if it is stock. That 'track'/geometry is very poorly done as it comes and it is one of the two mains reasons the doors often do not close properly on these models. So it is something that needs doing in almost all cases anyway. Just a bit more if there is rake.
But more important is that adding rake helps a LOT, so it is a worthwhile thing to improve!

The reason the full-scale does not need it is because all full scale aircraft can have a CofG notably more rearwards than any model of the same plane can. Thus full scale P-51's, Spitfires, BF-110's, Me-109s don't nose over anyway.
But that means in models you need to find a way to improve... reduce... the nose over issues on pretty well all warbirds (and many others). On;y increaseing forwards Rake can improve that in a proper and viable way.
Flying with a more rearwards CofG is NOT the way to fix that - that is a detrimental compromise on ANY aircraft, with dangerous flight behaviour results and thus a very bad idea! You might not 'see' the detrimental result, until the day you cross into them and what they cause! eg You might fly around 'fine' and think it is fine, but tail heavy causes amplified tip stalling process, and 'stall flaring' where you reach a point of low airspeed that you have no more Elevator Authority and thus it will nose up higher and higher into a worse and worse state - and you cannot control/stop it! Correct CofG will not do those at all.
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Old Aug 18, 2015, 07:43 AM
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Peter, do you have some pictures showing your rake and needed modifications?
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Old Aug 18, 2015, 07:47 AM
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Found your pictures a few pages back, I guess I raked too much since wheels prevented the doors to close ...
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Old Aug 18, 2015, 08:41 AM
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Like I mentioned, I think they can 'rise' (in the nacelle) something from 7mm to 10mm and still close the doors fully. But at the retract (spacer) you don't need anywhere near that amount, due to leverage of the long leg.
I think I used 2x 3mm washers on each rear retract pair end. Maybe I posted text or pics of what I did? A 3mm diameter washer is probably about 1.0mm to 1.5mm thick.

I have had a nose-over... but on very rough grass ground (sports field). But even on that it copes extremely well. You of course cannot win if you take on HUGE grass clumps etc! LOL
So unless you have a certain level of good 'ground' (grass) the ability to cope will reduce according to the reduction in surface quality. But without rake that is even much worse!
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Old Aug 18, 2015, 02:47 PM
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Quote:
Originally Posted by FlyingGolem View Post
Nice pics, lordmureth. They come close to making me regret my decision to strip and repaint my new acquired bird.
Thanks, for a prepainted warbird it looks good against those dark clouds! Shame that my Durafly Seafire which I'd put a lot of work into and still have more to do to fully convert it from the Mk 24 - nosedived on handlaunch, splitting the fuse in half...!
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Old Aug 18, 2015, 04:37 PM
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I had not been flying my BF-110 much for the nose over...or the ever present nose over bluff unless our perfectly manicured Bermuda grass field was....better than perfect.

I just deployed four 3mm washers to each rear retract mount (2.7mm = two popsicle sticks). The resulting rake is very good (I forgot to take photo's and measurements of before and after modifications). Used wire cutters to snip off the corners of the gear door tracks to allow them to seat back down to a "normalized" position when closed.

Very pleased with the end result.....now quite curious to fly it now with a lot of forward rake to the retracts!!

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Old Aug 21, 2015, 09:59 AM
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Yep - the landing gear rake did the trick for me......flew five batteries out last night and the only nose over I had was when I came in too hot....roll out was a little too bumpy. The rest of the flights were spot on perfect.

Dynam 1500mm ME BF-110 Sport Flying with friends 08-20-15 (6 min 18 sec)


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Old Aug 25, 2015, 06:43 AM
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Me and my BF-110 ... nothing special, just trying to fly scale. Minor nose-over at the end, our grass was a bit longer as normal

Geert - Dynam BF-110 - 19/8/2015 (4 min 15 sec)
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Old Aug 25, 2015, 05:30 PM
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Yes, nice scale flying.... and a very tight field to work from!
But you obviously are well practiced and brought it into there perfectly!

It might be hard FINDING a plane if it goes down in the fields! LOL
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Old Aug 25, 2015, 08:49 PM
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it2 - nice flying and video

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Old Aug 25, 2015, 10:02 PM
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Boy, seeing that video is tempting me into reassembling my partially stripped bird and taking her out to fly.
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Old Aug 26, 2015, 06:26 AM
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Thx for the comments guys :-)

Yeah our field is kinda restricted for yet another month or maybe month a and a half but you learn to cope with it.

I started flying exactly one year ago now, most of my planes can handle the corn restrictions fine except my FMS F-4 which lands too hot for these conditions lol
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