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Heli Wholesaler . JR-Spektrum . E-flite

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Gasser Model RC Helicopters > It was bound to happen sooner or later, THUD!
 
 
carpman
Senior Heliman
Location: Spain

My Posts This: Topic  Forum

I already have ball link traps on mine

KEVIN
Trex 600NSP | Trex 700 | MA Spectra G
10-10-2009 04:20 PM
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smallplanes
Key Veteran
Location: Timmonsville,S.C. ,USA

My Posts This: Topic  Forum		Well i found the bolts but i found the the bolts are silver an and they flat head do you know bolt end do you think the could some one let me know? Well i got to go i got to go to my wifes grandads funreal.Let me know what you think about the bolts?


Thansk

Spectra G 26cc
Jewel
2 Evo 50's
3 Trex 450's
Trex 700
Raptor50
12Z
10-10-2009 07:36 PM
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Malc1
Veteran
Location: EVESHAM,UK

My Posts This: Topic  Forum		I`ve just had the full kit of Min Air bits required come from the US this morning to do the mod.
Its taken a few weeks to get them all together but will be worth the wait I think.
10-10-2009 08:14 PM
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pgkevet
Key Veteran
Location: surrey UK

My Posts This: Topic  Forum		I did the ball trap thinga while ago, too. But i didn't like the idea of making holes big enough for the minair pierced balls in my futaba servo wheels.. so on that end i used Quicks balls which take an M2 bolt.. and obviously their matching ball-links on that end of the rod..

pgk
10-10-2009 08:44 PM
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Malc1
Veteran
Location: EVESHAM,UK

My Posts This: Topic  Forum		I`ve not looked into exactally what needs to be done.

Whats this about big holes?
10-10-2009 08:50 PM
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CNCjunkie
Senior Heliman
Location: Kauai (The Garden Isle), Hawaii - USA

My Posts This: Topic  Forum		The holes in the Futaba wheels are 2mm and need to be enlarged to 3mm if you use the balls w/3mm hole. Some feel drilling a 3mm hole in the servo wheel will weaken it.

I drilled a smaller hole and actually threaded the holes in the servo wheels to mount the balls, then I backed it up with a nyloc nut. I feel it's strong enough.

Just another crappy day in Paradise....Aloha!
10-10-2009 08:59 PM
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Malc1
Veteran
Location: EVESHAM,UK

My Posts This: Topic  Forum		I`m using JR servo arms.

Can`t remember the hole sizes.

Maybe I`m going to have the same problem then with possible weaknesses?

Threading directly without opening up the hole to 3mm sounds a good idea though.
10-10-2009 09:11 PM
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CNCjunkie
Senior Heliman
Location: Kauai (The Garden Isle), Hawaii - USA

My Posts This: Topic  Forum		MinAir also makes the balls with 2mm holes if you want to go that route. You would have to find a big enough washer to go over the link to capture it and also have only a 2mm hole to mount it.

Kind of like an automotive fender washer.

Just another crappy day in Paradise....Aloha!
10-10-2009 09:26 PM
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gramey
Senior Heliman
Location: United Kingdom

My Posts This: Topic  Forum		I actually got to fly my Spectra today for the first time since I crashed it. Initial findings were that the tail didn't like having zero degree's pitch and my throttle curve was still somewhat out. There's a quick trim function in the SL 720 whereby you flick it in and out of HH mode to set the gyro. Fortunately I tried flicking it into rate mode on the ground and then tried to lift off before trying it in the air. As soon as I went to lift off it started to spin so I sat it back down and reset the tail to the setting in the manual. I'm having to run 6 clicks of right trim on the rudder to stop the tail drifting to the right, despite re-checking my linkage in rate mode, but it flies fine like that so I may just leave it.
I've had to reduce my throttle curve from what I thought was already a fairly conservative one to keep the head speed down. Having said that the heli seemed much nicer to fly at 1700 rpm head speed than 1560 rpm. I then had to lean the high end needle out 1/8th of a turn to stop it bogging in climb outs.
All of this was done with the help of a friend at the club to whom I'm indebted for his perseverence in what has been a lengthy process so far.
I didn't have much time today due to a family member having gone into hospital but by the end of our time there the heli was starting to fly really nicley. Best of all it went home in one piece! Still a little tuning to be done but at least I feel like I'm now making progress. I'm not overly convinced that the governor, a GV-1 which came 2nd hand with another heli I bought, is working properly. I'm going to try and swap it with another GV-1 and see if the results vary.
One of the coolest things that my friend did was bring along a thermal imaging camera to check the engine temp. What a cool piece of kit, you can check the temp of your engine, exhaust, spark plug, even the clutch. The detail is awesome showing each indiviual fin on the engine and you can see the spark plug as clear as anything.
The only down side was I think my engine may still be running a bit hot despite appearing to run very nicely.
Weather permitting I shall be back out tomorrow further refining the settings. Still being a novice, and a little nervous after my previous crash, I let my friend (a very accomplished pilot) fly it and boy did it look impressive in the air!
Sorry about the lengthy post just glad I finally seem to be moving forward instead of backwards.

Dumb thumb specialist
10-11-2009 11:56 PM
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Fixit
Elite Veteran
Location: UK

My Posts This: Topic  Forum
Quote 
I then had to lean the high end needle out 1/8th of a turn to stop it bogging in climb outs.

Quote 
The only down side was I think my engine may still be running a bit hot despite appearing to run very nicely

It will run smoother and seem to have more power when lean, keep pulling the plug until you’re sure it’s not too lean then go and have fun

I only like to fly gassed up
10-12-2009 12:16 AM
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gramey
Senior Heliman
Location: United Kingdom

My Posts This: Topic  Forum		Thanks Fixit, I checked the plug before deciding to lean it out slightly, it was dark and slightly damp so I went the 1/8th turn. I shall continue to check it to monitor the effects of any changes I make. If it starts to get too light in colour it's time to back off a fraction.

Dumb thumb specialist
10-12-2009 12:20 AM
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Malc1
Veteran
Location: EVESHAM,UK

My Posts This: Topic  Forum		Graham

Glad to here the heli is back in the air.
10-12-2009 07:23 AM
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gramey
Senior Heliman
Location: United Kingdom

My Posts This: Topic  Forum		Thanks for that Malcolm, the throttle curve I've ended up with, if you can call it a curve, goes 0, 10, 15, 18.5, 25, 32.5, 100! I'm not sure how that stacks up with others using a tuned 23 but it seems to fly fine like this. Anyone care to comment on these figures, I have my throttle linkage set up as per the manual, any advice appreciated if I need to alter these figures.

Dumb thumb specialist
10-12-2009 11:45 PM
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Fixit
Elite Veteran
Location: UK

My Posts This: Topic  Forum		I know you’ve said this didn’t work for you before but if you spend some time on the throttle set up and follow the Malorie thread you will have a linier curve or very close to one when you've done.

See how many Spectra flyers are using it
http://runryder.com/helicopter/t105...=Throttle+setup

I only like to fly gassed up
10-13-2009 02:01 AM
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carpman
Senior Heliman
Location: Spain

My Posts This: Topic  Forum		I am using the Mallorie throttle linkage set up with a Hanson 3D Max on a Spectra G and my curve is definitely not linear. My figures are just slightly higher than Graham's.

Also I think Raja uses this method but his curve is also not linear, is it because we cannot replicate the Mallorie set up perfectly on the Spectra set up or because we are using a tuned motor?

Our curves will all differ with just a minor difference in set up, but I am a long way from linear...

KEVIN
Trex 600NSP | Trex 700 | MA Spectra G
10-13-2009 07:53 AM
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Fixit
Elite Veteran
Location: UK

My Posts This: Topic  Forum		I wouldn’t think the tuned motor made that much difference to the curve so maybe it’s the position of the servo

I only like to fly gassed up
10-13-2009 11:42 AM
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gramey
Senior Heliman
Location: United Kingdom

My Posts This: Topic  Forum		Well I put a couple of tanks through the Spectra after work today and I'm now starting to feel the love for this heli. I've still got a couple of minor things to sort out that I'll get to shortly.

First off I found it was dropping a little too much on the throttle when coming down so I've now got my throttle curve as follows 0, 12, 16.5, 21, 27, 35, 100. It's flying really nicely on this curve but can anyone tell me based on this what I should set Idle 1 & 2 curves at?

I've got to have a look at my tail linkage in rate mode, although I've done so several times alredy, as I need 6 clicks of right trim to stop the tail drifting. This isn't a huge problem as with this minor trim it holds nicely but ideally I'd like to get rid of it if I can, or do people think I should just leave well alone? The only other thing I can think of is I have the Gyro Sensing inhibited, the other options being Rudder D/R and Auto. When I switch it to either of the last two I seem to get very little tail movement on the stick, what do most people have their's set at.

Lastly there still appears to be some conflict with the governor, I have a JR 9303 TX (DSX 9 here in the U.K) and the JR 9 channel RX. I have the GV-1 on/off lead plugged into the Gear channel on my RX which should be switching my GV-1 off and on. The problem with this is that with RS1 set to 1560 when I flicked the governor in the head speed drops and the engine starts hunting. In Device Select on my TX I have the Gear switch set to Active rather than Governor, any thoughts on if this is right?

Sorry there are so many questions, especially as by and large the heli is flying really well now, but i just need to fine tune these few things and I should be cooking on gas!

Dumb thumb specialist
10-15-2009 09:56 PM
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col
Veteran
Location: U.K. Ipswich.

My Posts This: Topic  Forum		thats a good one there.

i'm sort of interested but kina don't wan't to medel much.!!

gv 1 in gear chanel ? now thats where i would put the gyro. i would put the gov in aux 2.

anyhow its a personal thing. i have had all the MA models in nitro and have have a bit of time on the 720 gyro now. maybe i could help out with the model and tail ( if u need it) but i have no personal experience with gassers apart from watching a mate struggle with a stator gator and a gv 1.

always happy to pop out on the new bike.
colin.
10-15-2009 10:24 PM
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gramey
Senior Heliman
Location: United Kingdom

My Posts This: Topic  Forum		Colin, it say's in the DSX9 manual to plug the governor into the Gear channel and your gyro into Aux 2 so that's how I've done it. It works fine on my 600 but then I only have a Throttle Jockey Pro governor on my 600 which is far simpler than the GV-1.
I won't be at OMHC until mid afternoon Sunday due to my shifts and possibly the same Monday, both weather dependent as I suppose the bike is as well! If your passing sometime you might be able to throw some light on the 720, cheers.

Dumb thumb specialist
10-15-2009 11:23 PM
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Fixit
Elite Veteran
Location: UK

My Posts This: Topic  Forum		Not sure about the governor , never used a GV-1 but as far as the tail goes I would note where the blade position is with trim on then take the trim off and adjust the rod to get you back to that position then it should be fine.

I only like to fly gassed up
10-16-2009 12:35 AM
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4 pages [ <<    <     1     ( 2 )     3      4     NEXT    >> ]1860 viewsPOST REPLY
Fast Lad Performance . Ace Hobby . Esprit Model

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Gasser Model RC Helicopters > It was bound to happen sooner or later, THUD!
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