trex problem
 

heres my setup electron 6 rx thunder power 2100mah pack hitech servos h-56. i can fly perfectly for the first 3 minutes on a full pack then the rotor speed drops and i can only hover in ground effect for 10-15 min. no altitude gain possible after 3 minutes I am running the 15t pinion and head speed is 2100.

any ideas is the motor pinion too tight against the drive gear?

RE: trex problem
 

umm... what motor?? lol. i hope you arent using a 15t pinion with a 3550kv 430L because that is going to fry something really quick if it hasnt already.

RE: trex problem
 

i am using the motor that came with the t-rex there is no guidance as to which one to use!
i have the other two. which one should i use it would be a quick change

RE: trex problem
 

11t for better flight times, 13t for 3d power... the 15t is good for frying your esc

RE: trex problem
 

thanks so much i havent fried anything yet she flys great. oh and thanks for not making some smart remark like most do i will put the small pinion on.

RE: trex problem
 

Also check the backlash and don't have the tail belt too tight, you should get good 8 minute flights with the 13t and that setup.

RE: trex problem
 

wow another nice person thanks

RE: trex problem
 

I use the 11T pinion with 1800 battery and get 12 - 15 minute flights. Check your pitch setting at hover, too much pitch will just drain your battery.

RE: trex problem
 

what should it be at hover how many degrees

RE: trex problem
 

i have to sat after flying warbirds most of my life you heli guys are very nice and helpful! no smart comments i appreciate that as I am new to electrics not to helies though

RE: trex problem
 

The general reccomendation is hover at about +6 degrees. I think I am also running about 80-85% power at hover. Also, hover is pretty well set up at 3/4 stick movement on the tx.

RE: trex problem
 

well i changed the pinion to the 11T and loosened the belt and gear mesh. i bought a triton charger and wow 10 minute flights. I only have a three point curve and the settings on trex tuning do not work so i am playing with pitch. wife purchased a small digital 100g scale on ebay for 8 bucks i use it to weigh blades really useful takes all vibration out! i really think the older charger was not fully charging! The triton is an awesome charger for 125 comes with a temp sensor!

RE: trex problem
 

Hello. I am new to helis, and I have been learning to fly with a .30 gas heli. My next choice will be a trex SE or XL. Which one do you think is better for beginners?
Also, i want to know if the pinions are included in the kit, because I dont live in the USA and the pinions are very difficult to get here.
Tank you
Manuel

RE: trex problem
 

Make sure that you don't over-loosen anything......that'll do more harm than good in itself. The main gear should have the tinyest little bit of side to side play between it and the drive pinion. An easy way to check it is to slip a piece of paper in between the two, then tighten them down.

Also, your tail belt needs to be reasonably tight. You should be able to use light finger pressure to push one side of the belt (the part you can see), to about 3/4 of the way to the other side. If it's too loose, it'll shred itself when it walks around on the pulleys.

In regards to your pitch, you probably want to start out by setting up your swashplate to allow it to travel between -9 degrees to +9 degrees of pitch. hopefully you have a pitch gauge. When you're at mid point on the throttle/pitch stick, your pitch should be zero, and your throttle should probably be around 60%. That should give you ample rotor speed and ample pitch to hover at a little under 3/4 stick. Some people like their helis to lift off into a hover at center stick, which doesn't make any sense.

Something else I think is important to do is to set your pitch curve in the normal mode to be something like this: 40,45,50,75,100, or in your case with a 3 point curve: 40,50,100. Maybe you have it set up that way anyway, but I thought it might be good advise because it helps to prevent some really hard crashes. With a pitch curve like that, if you need to shut your throttle down quickly, you don't drive your heli into the ground when you return your stick to the zero position, because it's not allowing you to go to -9 degrees pitch.

RE: trex problem
 

Go with the SE is very tight heli you wont be dissapointed spend once instead of twice hope that helps . El Pibe

RE: trex problem
 

The xl is a nice helo, all plastic parts making it cheap to repair. It can be upgreaded at your leisure(depth of pocketbook). It flys well too! It does come with assorted pinions, 11, 13, 15? I think. I use 11t. The align 430 motor seems to work fine. Get a 35 amp Esc and at least a 2100 mah battery. Thuder Power seems to be the preferred battery. The SE is quite a bit more money, My barebone XL was $179 US. 430 motor $48. Castle Creastions 35 amp ESC $85. There are a lot of packaged deals, but make sure you are getting the components that you want.

RE: trex problem
 

Thanks sooo much, cooperd. Very useful info.
I think that i am going to get the SE, but i still have lots of forums to read!!
Thanks again,
Menze

RE: trex problem
 

you won`t be dissapointed :D

RE: trex problem
 

Thanks mavdriver to you too! Another nice guy!
Menze