Classic British Flight Sim

I've just reaquainted myself with Rick's wonderful Viscount 800 with Fraser's equally amazing new panel. I'm having a couple of problems which one of you guys might help me solve.

Firstly when I load the aircraft it is some 6500 pounds overweight - 100% fuel in all tanks despite my default flight having all tanks set to 40%. Easily solved on the ground but I keep overlooking it :redface:

The other problem is take-off. If I don't use trim (and yes I have read the manual but tried it anyway) it's hard to rotate before running out of runway :shock: If I do then the aircraft starts its own rotation around 60-80 knots. About 0.2 positive trim keeps the aircraft on the runway until Vr but needs a hefty tug on the yoke and plenty of back pressure to maintain a healthy climb out. Anything more causes the nose to lift without my assistance.

It must be me but what the **** am I doing wrong?

Regards
Andy

It all sounds normal Andy, it's not something you're doing wrong.

The Viscount does have an unusual fuel tank setup in that it uses the Aux & Tip tanks (Left & Right).
It will no doubt have that arrangement to allow some subtle function in the fuel system to work.
The chances of your default flight using these exact same tanks is pretty low & FS always loads 100% fuel in any tank that the default model hasn't got.
I'd guess your default models has main left, right & maybe centre tanks instead, so none of them match the Viscount.

The trim story sounds familiar. We had a discussion about it some time back & there were different ideas on how to handle it on takeoff with the Viscount.
1) I put in 2 degrees nose up trim & apply a bit of forward pressure to keep the nose down until rotate speed.
2) Some leave trim off, give it a good pull at rotate & hold the force until the speed increases.
3) Some leave trim off, give it a good pull at rotate & trim out the force after takeoff.
4) One naughty simmer even applied the trim at rotate time & allowed the model to take off without touching the yoke.

All work, so just decide which method you think is best.
It's no 1 by the way.

DM

I always start the run with zero and at about 95 I start winding in trim until she lifts then a slight tug or a little extra trim and she flies off at the correct climb angle........but don' tell anyone

Not very technical but it works for me. BTW can't think who Dave means by that naughty simmer. :roll:

I would tend to follow Dave and slight trim up holding the nose down but I find she tends to dig in too much.

Garry

Hi Guys

One day i will get to rebuilding these FS2000 based models.

But not telling you when that will be as at current dev times i will be 143 on that day

Or not as it may be

I should have done the same as DM and just stuck to 3 models.
not the 12 (plus 4 others that i never released) as it's too much for one Designer to cope with.

Regards
Rick

Hi Andy,

Can't see how you can run out of runway, even at MTOW she comes off at Guernsey just in time :shock: (admittedly I usually stand on the brakes). I have been testing a fuel trim/power ratio system for the 810 and I can still get her off with 0% trim without water meth (not recommended). I usually trim 2-3' nose up at average weights for takeoff, reduce rate of climb at 400' agl to increase speed to Vfu, retract flaps and set climb power.

FS9 will virtually always tell you you're overweight at higher fuel loadings as this is an older model, which still stands up magnificently.

Cheers

Fraser

Hi Guys

Hey i bet Andy still has the Gust locks on

Andy make sure the gust locks are off.
Green lever on far right of quadrant :roll:

I just tried it and the only way i can't get off the runway is with the gust locks still engadged

Regards
Rick

Good point Rick and he won't have full power either

Garry

Hi Guys,

Thanks for all your help. I guess it's just a case of being very precise about trim and t/o handling. I didn't have the gust locks on - more by good luck than good management :think: Even so, with the gust locks on I managed to get airborne from Stornoway although the climb wasn't too clever

Thanks again and thanks for a brilliant aircraft.

Cheers,
Andy