Sometimes Can't Reach V1 for Takeoff

[lehbird]

Maybe 1 out 20 flights I have a situation where I can't reach V1 on takeoff roll. I reach about 140 knots and then accelerate no further. I posted earlier that I thought perhaps it was an icing issue. However, I just had it occur with an OAT of 51F. What could possibly cause this?

Thanks,

Dave

[kecm80]

hi, actually the OAT can be good but your wings can be in icing condition, yesterday happened to me a similar kind of thing. 

exiting from FBO i noticed that my wings are iced, i set up my plane and took off, (without deicing just for experimental purpose) or better to say i tried, the bird accelerated quite as normal but around V2 no more speed increase and of course no positive climb with column pulled all the way back, overrun runway threshold by a lot.

As for the xplane data output only main wing left and right was iced, 0.480 and 0.500, OAT 9°C and no colder than 6°C since shut down airplane 12 hours before. This maybe because i injected weather after loading my flight (ASXP weather plugin as talked about in other thread in this forum) so i think it can be due to icing conditions like you said. 

So if you're using weather injection tools make sure to load it before starting your flight in xplane. 

 

 

[lehbird]

12 hours ago, kecm80 said:

hi, actually the OAT can be good but your wings can be in icing condition, yesterday happened to me a similar kind of thing. 

exiting from FBO i noticed that my wings are iced, i set up my plane and took off, (without deicing just for experimental purpose) or better to say i tried, the bird accelerated quite as normal but around V2 no more speed increase and of course no positive climb with column pulled all the way back, overrun runway threshold by a lot.

As for the xplane data output only main wing left and right was iced, 0.480 and 0.500, OAT 9°C and no colder than 6°C since shut down airplane 12 hours before. This maybe because i injected weather after loading my flight (ASXP weather plugin as talked about in other thread in this forum) so i think it can be due to icing conditions like you said. 

So if you're using weather injection tools make sure to load it before starting your flight in xplane. 

 

 

Interesting, thanks for the advice. I do have REX injecting my weather so maybe there is some correlation there. Thanks again. 

[lehbird]

Having this issue again..... really don't think it is a icing issue...cant figure it out. 

[lehbird]

15 minutes ago, lehbird said:

Having this issue again..... really don't think it is a icing issue...cant figure it out. 

Scratch that...it was icing at a "balmy" KBWI... go figure....

[Pils]

Some icing improvements will come in the next update.

[JRBarrett]

I use XEnviro for weather, and it is configured to be “on” when X-Plane starts up, before loading the C650. I have noted that on the first load of XP (in career mode) the wings are often iced up, even if the air temperature is above freezing and skies are clear. (No rain or snow).

When this happens, I exit the sim completely and re-start it. It usually loads the second time with the wings clear of any ice.