NX4 with Gaui T-10

[hydev]

I'm interested to hear from people who have done 3D with the NX4 and the T-10 gasoline engine. I'm not a smack 3D pilot but certainly do stuff that requires heli's with power. I'm curious to know if it really can work with it.

My logic would be to only fill it with enough petrol to do 4 mins so the disc loading was light. I'm also not afraid of a little modification.

Any information greatly received.

Mike

[LoveToFly1]

everything that i saw at IRCHA, including talking to some of the top pilots that flew both of them, indicates that in this special case, the gas motor may actually be more powerful than the nitro counterpart.....

they did a great job of designing this motor.

you can get 15min out of a tank of fuel....with the same weight as a 4 min flight of nitro.....

[hydev]

That's really interesting, thanks. Might have to seriously look at this.

[distructor]

According to everyone who has been successful with this engine, breakin is the key. Several threads on this and other forums to read about this.
I've not received mine yet, but people say that care through the 1st couple gallons will result in an engine that will last you a long time.

[LoveToFly1]

that is exactly right. just like with any gasser, it takes around 5 full gallons to truly break one in. this motor is esps hard too, i think you have to actually idle 2-3 tanks out of it.

break in is def key. take your time, and you will be rewarded with an amazing motor that runs cheap and powerful.

i have seen post like the one above "people who have been successful", but i still have not seen or heard a bad review.

again, with a gas motor, break in is key. for people coming from nitro with no gas experience, i can see how they may have issues though. break in is long, and boring. very long and very boring. think about it. 15 min a tank. 15 tanks a gallon......5 full gallons before she is truly broken in.....thats a lot of orientation and hover training...lol

[HelisRock]

I'm planning on building an NX4 gasser this winter, and looks like there are 100s of ways to break in gassers, and the T-10 requires even more special treatment. What did you guys with T-10s use for oil? Dino during break in then synthetic ever after? Sounds like lots of people are using Lawn Boy and Pennzoil. Anyone use an engine stand to idle the first tank fulls?

I'm thinking of using Bel Ray 2T Mineral, then H1-R. I'm thinking of setting it up on an engine stand and idling a tankful in the morning, letting it cool, then another in the afternoon. My neighbors will wonder what the heck I'm doing, but hey. With that process I figure it wouldn't be too hard to idle gallons if I need to. Thoughts or suggestions on what worked for you? Thanks!

[Hot Apple Pie Guy]

At an idle... My Heli took over 2 hours and 20 minutes to 'idle' through a single 9 oz tank of fuel!!!

I had to keep changing rx and cdi packs during the process... About every 45-50 minutes...

I'm mixing 10:1 ratio of supreme pump gas and Dumonde tech premium racing castor oil... It's what I used back when I used to race 2 stroke Dirtbikes and I love the reminiscent smell my helicopter makes!!! Lol

Hover training/break in I get roughly 21-22 minutes of flight at 2500ish Rpms... She's got tons of power and with the gear ratio it doesn't feel like bogging will EVER be a problem!!

I'm not a hard 3d guy myself yet... But I already fly this bird like I fly most of my others.. I think I only made it through 3.25 tanks at an idle before I started hovering/flying it... I've had the motor out and apart a few times trying to diagnose some problems I've had... Which turned out to be a clutch hub nut backing off, and a small piece of a rubber o-ring that cut itself off and wedged itself into the low needle center... I've even stripped the motor down and inspected the piston/crank at the field .. Then put her back together and got another flight on her before the sun went down!

It's a very simplistic motor overall... Not at all what I would have expected ! A little bit of a learning curve to figure out tuning methods on the needles... But adjusting them while doing the 'idle ' break in process helps a lot! I notice I tune the low needle EVERY time I fire it up, then again when it's warm, then tune the high needle the first flight.. Then it seems to hold those settings for the rest of the day... But, I keep a mini flat head screwdriver in my pocket at all times... It's not really that tough when you get the hang of if !

[distructor]

I would like more pictures of nx4/t-10 builds. Specifically ignition module placement in relation to receiver. Futaba receiver and antenna placement. Dual battery placement. My nx4 gasser is getting rather crowded.
Ideas needed[emoji3]

[HelisRock]

Originally Posted by LoveToFly1

again, with a gas motor, break in is key. for people coming from nitro with no gas experience, i can see how they may have issues though. break in is long, and boring. very long and very boring. think about it. 15 min a tank. 15 tanks a gallon......5 full gallons before she is truly broken in.....thats a lot of orientation and hover training...lol

Originally Posted by Hot Apple Pie Guy

At an idle... My Heli took over 2 hours and 20 minutes to 'idle' through a single 9 oz tank of fuel!!!
I had to keep changing rx and cdi packs during the process... About every 45-50 minutes...

Dang, this sounds extremely painful

I'm new to gassers so I'm wondering what the heck I'm getting myself into this time

I didn't think about RX, TX and CDI batts... I'm gonna try to figure out a way to do a couple gallons with an engine stand and AC/DC regulator, otherwise I know I'll 1) kill some Lipos/Lifes and 2) run out of patience and just go fly the thing.

Originally Posted by Hot Apple Pie Guy

I'm mixing 10:1 ratio of supreme pump gas and Dumonde tech premium racing castor oil... It's what I used back when I used to race 2 stroke Dirtbikes and I love the reminiscent smell my helicopter makes!!! Lol

I also love the smell of burnt castor oil, brings back great memories!

Now if they can only bring back that expansion chamber sound instead of weedeater...

Originally Posted by distructor

I would like more pictures of nx4/t-10 builds. Specifically ignition module placement in relation to receiver. Futaba receiver and antenna placement. Dual battery placement. My nx4 gasser is getting rather crowded.
Ideas needed[emoji3]

+1 I'm just starting to read about CDI emissions and also worry about how much of a problem it might be on this little guy.

[Hot Apple Pie Guy]

Cdi hasn't been much of a problem overall... Just run two sats...

I was also informed that I could run the engine with just a cdi battery... Which has very minimal consumption in comparison to the rx... But , I just couldn't bring myself to allow the Heli to run without my tx in control... FYI , when the rx batt had depleted and browned out(setting the Heli into safe shutoff mode~50 mins).. The cdi pack had only been depleted to roughly 80%...

Doug Darby is the king of info on this little machine ... And I've seen his 'bad gas jr' fly amazingly well! And mine has surpassed ALL of my expectations! I'll try to chime in more as I get the time... It's not as complicated as it seems... And this little gasser motor is completely different of just about everything I've ever read about the gassers of yester-years... It's no longer a sluggish, underpowered , over-weight, long running motor that they used to be... These appear to be compact, simplistic, powerhouses compared to their older counterparts... It truly is a LOT of fun... Just in a different way than we are used to seeing with Electrics and Nitros... It's always a big hit at the funflies!

[distructor]

I think I have a Taranis install with telemetry all figured out. Will post pictures when I have it all dressed up.

[distructor]

FYI, the best setup info I've found would be Doug's comments during the 2014 IRCHA Gas Powered Thoughts session.

Gas Powered Thoughts & Modified Gas Heli Engines : Live from IRCHA 2014 (1 hr 25 min 22 sec)

The whole video is about gassers in general, but Doug's Gaui NX4/T-10 comments about breakin at the 15 minute mark and some good comments at the 42.5 -> 49 minute mark caught my attention

[mrcarbon]

PM sent...

[Raleighcopter]

Originally Posted by distructor

I would like more pictures of nx4/t-10 builds. Specifically ignition module placement in relation to receiver. Futaba receiver and antenna placement. Dual battery placement. My nx4 gasser is getting rather crowded.
Ideas needed[emoji3]

Shortened the wire to the spark plug by about half too.

[billy bob]

Have you read this thread
https://www.helifreak.com/showthread.php?t=715664