RunRyder RC
WATCH
 56 pages [ <<    <     25      26     ( 27 )     28      29     NEXT    >> ] 110367 views Post Reply
02-25-2010 02:30 AM  10 years ago
Stall_Warning

rrApprentice

NE, Pa. - USA

MyPosts All Forum Topic
I don't think that the spektrum voltage regulator is a good idea.

I've been running this engine since they came out. I've measured
2.5 Amp draw on the ignition in a plane. We ran a no-longer available
10 Amp dual output voltage regulator with no issues.

I don't know if there have been any design changes in the stock
ignition since the beginning.

On my early ignition, under low voltage condition, it appears
the timing will retard and the high speed will break up. Might
explain the high temps you had with that regulator.

I've done some testing with a single cell Lipo discharged
to 50% - the level I would stop flying at. Don't see any difference
between it and the regulator in ground testing.
I have not yet flown with the Lipo in a Heli to be sure.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-25-2010 11:35 AM  10 years ago
copperclad

rrElite Veteran

NY

MyPosts All Forum Topic
Hi
this info could be dated , but a couple of years ago , when the G20 first came out , there was a European version EI unit designed for a single cell lipo , of course here in the States we were to use 4.8 volts

i found it odd that there would actually be two different versions , but my friend in the UK had the European version and was running a single cell lipo with his

.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 06:09 PM  10 years ago
trae8622

rrApprentice

columbia. South Carolina

MyPosts All Forum Topic
gotta atg curtis govner and wanta use but gear ration in program manual does not go that low i am running 14th with 90th and the govner does not go past 7.8 on ratio need helpTrae Shipley/Align 600e FBL
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-28-2010 10:25 PM  10 years ago
chopper_crazy

rrElite Veteran

Delphos, Ohio

MyPosts All Forum Topic
I am still not sure what to use as far as batteries go on my Radikal. I am running a Mikado V Bar set up with a Century flybarless head. I am also running a Hanson Max Pro engine with the electronic ignition system. I see a lot of guys running nimh batteries. My question is that I have a pair of Outrage lipo packs and was curious if they would work properly. I have a Outrage 2S1P 7.4V 2500mAh battery and a Outrage 2S1P 7.4V 5000mAh battery. I was thinking I would use the 2500 for the electronic ignition system and the 5000 for my actual receiver pack. Is this right?? I am running JR 8917HV servos on the cyclic, JR8717 on the throttle and a Futaba BLS251 on the tail. Will I need a step down or anything else for this to work properly or are these not the right batteries for this bird. What type of flight times can I expect before having to recharge the batteries? I want to make sure I am doing everything correct. Thanks for your help.It's a complex, costly, glow powered anti-gravity machine!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 10:40 PM  10 years ago
copperclad

rrElite Veteran

NY

MyPosts All Forum Topic
Hi
your EI unit should have a label on it that will list the input voltage , most units i have seen here in the states will list the input voltage as 4.8/6.0 volts

this is why people are running 4 cell nimh batteries

i would guess that 7.4 volts will fry the EI unit , regards

.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 11:50 PM  10 years ago
chopper_crazy

rrElite Veteran

Delphos, Ohio

MyPosts All Forum Topic
Would I be able to get a step down or a regulator and have it work properly. I want to make sure I am doing this right. If that would work which one would you use? ThanksIt's a complex, costly, glow powered anti-gravity machine!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-01-2010 12:05 AM  10 years ago
Stall_Warning

rrApprentice

NE, Pa. - USA

MyPosts All Forum Topic
I can tell you that a good 10 Amp regulator will work fine on
that ignition. I flew it in a plane for 2 seasons and no issues.

I could not tell you that a step down would work on the ignition.

The stock ignition is pricey . It would be an expensive
experiment if the step down fried the ignition.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-01-2010 12:23 AM  10 years ago
copperclad

rrElite Veteran

NY

MyPosts All Forum Topic
Hi
yes , last time i looked the stock Zenoah EI unit was like $160.00

you can buy spark advance EI units for around $35.00

about the only tricky part is you have to find one with the correct spark plug boot on it , and the Horizon site lists the replacement Zenoah boot for around $25.00

a couple of years ago , when i was doing the G600 , i had a whole list of US companies that carried these after market EI units , and when i checked again recently , they were all out of business

here is a link

http://www.hobbyking.com/hobbyking/...?idProduct=7448

.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-01-2010 03:14 AM  10 years ago
Jgiang

rrVeteran

Raleigh, the city in the park.... :)

MyPosts All Forum Topic
hey BillMe,

what type of governor sensor did you use on the gasser? the pic is so blur I can not tell.

is the fan already have the notch drill out or you need to drill out yourself?

anyone using the GV-1 as the governor on this gasser? and which sensor did you guy using?

It was in the air, but now it's on the ground. :)
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-02-2010 04:59 AM  10 years ago
Billme

rrElite Veteran

MS

MyPosts All Forum Topic
Jgiang,

I'm using the Gv-1 sensor, and bending one of the supplied mounting brackets using 2.5 mm bolts threaded into the bottom fan plate...

The fans come pre-drilled with ignition magnet installed....The next batch fans will come installed with 2 magnets of opposite polarity to make this easier for the customer..

If you have one of the first kits, you will have to drill out 180 degs opposite of the ignition magnet to install a different polarity magnet if using the GV-1..

Do not drill all the way through with a 5mm drill, only deep enough for the magnet to be level with the surface..Once you have the hole drilled, take a 1/16 drill and drill all the way through in the middle of the hole. This will allow excess to escape, and better cure on the glue..Do not forget to wipe off the excess on the bottom of the fan too.

Good luck
Bill
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-02-2010 02:05 PM  10 years ago
Jgiang

rrVeteran

Raleigh, the city in the park.... :)

MyPosts All Forum Topic
pre-installed magnet that is good. any idea when the next batch that has 2 magnet install is coming out?

another question I have about the engine exhaust, is the engine have the same mounting dimension as g231 engine? as I have the pipe that I want to use but need a left hand side header instead of right high side.

It was in the air, but now it's on the ground. :)
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-02-2010 02:39 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

MyPosts All Forum Topic
Yes
The 20, 23, 231, 26, 27, 29 and 30cc all have the same exhaust port size.

On the gv-1 magnet, you should mount your fan to the clutch unit and put the whole thing on the high point balancer together as the balance as a unit will be different than the balance as individual parts.

I found that the gv-1 magnet needed to go into the same area as the ingition magnet and not at opposite ends due to balance. Like if the ignition magnet is at 12'oclock, the gv-1 magnet went in at 1 o'clock.

Just food for thought you should check balance while you do this to determine where is best.

-=>Raja.
MA 1005 Hanson 2703D, 4400 flts
Spectra 27 3DMax, 3460 flts
Whiplash V1-2 Hanson 300, 1995 flts
Whiplash V2 Hanson 300, 923 flts
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
03-02-2010 05:03 PM  10 years ago
CT.Chopper

rrVeteran

Meriden, CT

MyPosts All Forum Topic
Just ordered the lipo ignition module opto isolator
that bobbyra said. should work great.
will be running a 6000mah 7.4 lipo rx pack to power the whole rig.
Rob Landry.
SHARE  PM  EMAIL  Attn:RR  Quote
03-02-2010 05:31 PM  10 years ago
Billme

rrElite Veteran

MS

MyPosts All Forum Topic
Sounds like a good setup CT..

Yes, you must rebalance a fan anytime you make a change on it.. That goes for anything that you want to rotate smoothly.. Its one of those things that is automatic and should know without saying...
Of course the new fans you want have to do anything on the next batch..
Bill
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-08-2010 04:26 PM  10 years ago
nowinkk

rrNovice

LandBelowTheWings

MyPosts All Forum Topic
Is 145 degrees celcius too high in tropical climate.
My location is near the equator, so the daytime ambient temperature is about 33 degrees celcius.

I used Eagle Tree temperature sensor to monitor the G20EI cylinder head temperature between first and 2nd fin. The highest temperature recorded was 145 degrees celcius (293 degress Fahrenheit)in short hovering only. I wonder if this was too high.

My main gear 84T, pinion 14T, so gear ratio = 6.0 : 1
My main rotor blade: 660mm fibre glass from The World Model and was spinning at 1,800 rpm.
Oil ratio: 30:1
Needle: L 1 1/4 turn and H 1 1/2 turn.

Pls advise if my setup and high engine temperature NORMAL.

Thank you.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-08-2010 06:13 PM  10 years ago
CT.Chopper

rrVeteran

Meriden, CT

MyPosts All Forum Topic
sounds hot to me,
i would richen the needles up a bit...
Rob Landry.
SHARE  PM  EMAIL  Attn:RR  Quote
03-08-2010 11:52 PM  10 years ago
Billme

rrElite Veteran

MS

MyPosts All Forum Topic
You are running to big of blades for the gear ratio you are running..opening up the needles want help much, but you can try it...

To run 660's you need to be running 6.9.. this will help the engine run cooler at a higher rpm...

Since you are in extreme conditions, optimize as much as you can..

I would try to verify the temp on the eagle tree with maybe a good laser temp to help verify your readings..Some of these systems sometimes give a higher reading than it actually is...

Optimize the cooling system by taking the bottom front portion of the G240 RC cooling duct, and bolt it to the engine under the cooling shroud...This will redirect air to the bottom fins, that usually by-passes..
So, right now if you have your probe bolted to a bottom fin, it will read higher than one on the side, or top fins. Can be a 40 deg deference..
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-09-2010 12:27 AM  10 years ago
nowinkk

rrNovice

LandBelowTheWings

MyPosts All Forum Topic
Thank you Billme and CT.

My 660's is not wide cord. Would wide cord or otherwise make any difference in my application?

To change the gear ratio, what would be the main gear and pinion sizes? Can I maintain the 14T pinion and install a 97T main gear?

My probe was inserted to the bottom fins, where accessibility is easy anyway.

The 40 degrees difference must be in Fahrenheit, so it's only about 4.4 degress in Celcius, right?

Well, I will try richening up the needles and also changing the oil mix from 30:1 to 25:1 and see how it performs.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-09-2010 12:50 AM  10 years ago
Billme

rrElite Veteran

MS

MyPosts All Forum Topic
ok, then you are running cooler than you think..I would at least get the 90 main. that will get you 6.4, and give you some rpm..

Total parasitic drag, and weight play a roll on the blades/ ratio...sounds like they might be very light, hopefully, so ...

At this point, I would get at least the 90 main..That is the only one they make for this machine..the 84 was dropped..

You can make a re direct by taking some tri-stock, and ca it to the inside of the bottom left cooling shroud.. Ca it at the height that would allow a piece of 1-32 ply to the tri stock, and cut it right before touching the middle bottom fins..this will get air to those fins, and have better overall temps...

You are probably running 240 degs on the side, and a little cooler on the top fins...

Leave your oil at 32:1

One other thing that I'm convinced on is using the metal insulators with a thick Gaskets.. The stock one is horrible, but metal one is the way to go...
Do these things, and you should do fine..
Bill
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-09-2010 01:56 AM  10 years ago
nowinkk

rrNovice

LandBelowTheWings

MyPosts All Forum Topic
The World Model 660 blade(fibre glass), though not wide cord, weigh much heavier than the wide cord 640 woody that I used before. Does this heavier weight affect engine temperature?

Century supplied me with inadequate main gear and pinion in the kit. 84T/16T gave 5.25 ratio. My local distributor, upon my request, got me the 14T pinion free of charge. Thus my gear ratio becomes 6.0 (84T/14T) as of now. It seems Century should let me have the 90T main gear as well, at least to provide me with a more comfortable gear ratio of 6.42 as recommended. If Century has drop the original 84T main gear production, that proved the 84T design was inadequate for this machine and she should replace them free of charge for those initially supplied with it.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 56 pages [ <<    <     25      26     ( 27 )     28      29     NEXT    >> ] 110367 views Post Reply
Print TOPIC

 79  Topic Subscribe

Thursday, December 3 - 7:52 pm - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online