View Full Version : Flight times and nitro content
sprice50
02-26-2009, 02:37 PM
Hello,
What are the typical flight times for a nitro 700?
What range of nitro fuel can be used? I.e can you run 15% or do you have to run 30%?
Thanks,
Shaun
Ludde
02-26-2009, 03:50 PM
well its all up to rpm.. yes u can run 15% nitro..
first run for my engine.. well 2 min then the tank was empty.- lol
but I guezz 7-8 min or more depending on your tuning and rpm..
stmpngrnd
02-26-2009, 04:09 PM
I think my bird may be a freak of nature.
older OS91 with MP2
multigov pro with mixture control set to 100C
1900 in idle2
FBL
powermaster 30%
When my 8 minute timer goes off there is still about 1/2 to 3/4 inch of fuel in the maintank and the header hasn't been touched. I've pushed it over 11minutes flying half 3D and half big/fast F3C style on a single tank.
HoffY
02-26-2009, 06:26 PM
I'd have to echo what Ludde said. I've got timer set to 7m30s and usually about ~10mm of fuel roughly in the tank. Thats running 91H @ 1950.
So i'd say over all a 7-9min window.
3dpilot
02-26-2009, 08:44 PM
YS 91SR running 15% Cool Power. I am breaking the engine in so I am running on the rich side. I made it to 7 minutes then it started on the header tank.
carpman
02-27-2009, 12:03 PM
Running 20% Rapicon and timer set at 7 minutes, this usually sees 10-15mm left in the tank when I bring her back in. Usually get another minute or 2 then as I have a header tank on....
Running 30% Rapicon:thumbup: and usually fly around 9 min in idle 2 (1940HS). Still approx 10-15mm fuel left.
Was running through a gallon today, and I think a gallon gives impressive stick time:).
carpman
02-27-2009, 12:55 PM
Wow another Rapicon user how do you like it?
I think it runs on the smokey side, but I checked one of my OS50 engines and it's very clean after running about 32 litres through it, thanks to the oil content!
epheli
02-27-2009, 01:17 PM
Using 20% Rapicon, about 9 - 9.30 min. Have around 1 cm fuel left.
Engine ; Align 91 HP (OS HZ).
Wow another Rapicon user how do you like it?
I think it runs on the smokey side, but I checked one of my OS50 engines and it's very clean after running about 32 litres through it, thanks to the oil content!
Just started to use it as my LHS have just started to sell it. After some slight adjustment, i am very pleased with it. Very good powerband. It is slightly smokey as you mention, but no big issue. The cost is also very low:thumbup: