RunRyder RC
WATCH
 5 pages [ <<    <     1      2     ( 3 )     4      5     NEXT    >> ] 3546 views POST REPLY
HomeAircraftHelicopterGasser Model RC HelicoptersOther › Spectra G - Another "Never Ending Story"
04-06-2010 08:32 PM  8 years agoPost 41
carpman

rrVeteran

Spain

My Posts: All  Forum  Topic

Hi Bo

Needle settings I varied from initial values of 1.5 high and 1 3/8 low to 1.5 on each...

It can run fine at idle, or after a short flight when it has warmed up a little it doesn't want to shut down and other times it will shut down. In other words erratic and not consistent. Sometimes I can land it and it is doing the woah, woah, woah huffing and puffing noise, other times it is fine....

The motor temperature is an improvement, the block I agree is high. I have had 3 insulator blocks on and new gaskets each time. These are not ZRC blocks not sure what make they are, but they have worked fine before.

I'm kinda lost at sea and floundering with this one at the minute...

I will try and video as soon as possible, but I need to fly helis that work for a few days first.

KEVIN
Trex 500ESP | Trex 600NSP | Trex 700 Gasser | MA Spectra G

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
04-07-2010 12:26 PM  8 years agoPost 42
j.8

rrVeteran

Denmark

My Posts: All  Forum  Topic

Hi Kevin

Well, depending of the headspeed ofcause, I would try to
richen the high needel and bit more than 1.5, and leave
the low at 1 3/8, and se if that helps, lowering the
engien temp.

Even with two Walbro 643, there can be differences in the
needel settings.

Regards Bo

PM  EMAIL  GALLERY  Attn:RR  Quote
04-07-2010 01:20 PM  8 years agoPost 43
pgkevet

rrKey Veteran

Wales

My Posts: All  Forum  Topic

Just to jump in, Bo

I tink you metioned you have sealed bearings installed instead of the plain plus seals? Are these the standard sealed bearings that adevsmotors does? Any reason why one couldn't use them with the seals as well?..sorta belt and braces?

pgk

PM  EMAIL  Attn:RR  Quote
04-07-2010 03:45 PM  8 years agoPost 44
j.8

rrVeteran

Denmark

My Posts: All  Forum  Topic

Hi pgk
Are these the standard sealed bearings that adevsmotors does?
Toxic Al put the bearings in my engien, one time he
had it for a stage 3 mod, so what kind they exactly are
I`ll have to admit I don`t know.
But I think that some sealed bearings are only dust sealed,
if there is anything called a pressure sealed bearing I
don`t know, or if they are using the combination that you are
suggesting
Any reason why one couldn't use them with the seals as well?..sorta belt and braces?
Not that I can think of, the more the better, but personally
I would ask Toxic Al, the buisness I have done with him sofare,
only tells me that he`s a great guy.

Regards Bo

PM  EMAIL  GALLERY  Attn:RR  Quote
04-07-2010 04:09 PM  8 years agoPost 45
shawmcky

rrElite Veteran

Isle of Wight,United Kingdom

My Posts: All  Forum  Topic

I Suppose the first thing to ask Al is if the seals are prone to failure in the first instance.
Seals in most modern two stroke applications usually last a long time.

Team- unbiased opinion.K.I.S.S principle upheld here

PM  EMAIL  GALLERY  Attn:RR  Quote
04-07-2010 04:46 PM  8 years agoPost 46
pgkevet

rrKey Veteran

Wales

My Posts: All  Forum  Topic

Hanson motor..

Aftre decoking the top form the XR77 Idid cht with Al..who said I shouldn't need to do aythig else..but I'm panning on looking in the bottom anyway..so a question of what bits to have on standby. I really don't want to keep pulling engines and re-aligning them on these gassers.. though funnily I don't mind on the nitros - daft..

pgk

PM  EMAIL  Attn:RR  Quote
04-07-2010 05:44 PM  8 years agoPost 47
j.8

rrVeteran

Denmark

My Posts: All  Forum  Topic

Hi shawmcky
I Suppose the first thing to ask Al is if the seals are prone to failure in the first instance.

Seals in most modern two stroke applications usually last a long time.
Well, the reason for this bearing change was due to a radio lockout,
wich caused a chiken dance, not bad bearings in the first place

Ah just realised that you might have said that in genneral

Regards Bo

PM  EMAIL  GALLERY  Attn:RR  Quote
04-07-2010 06:59 PM  8 years agoPost 48
shawmcky

rrElite Veteran

Isle of Wight,United Kingdom

My Posts: All  Forum  Topic

Hi Bo
Yes i did mean generally

Team- unbiased opinion.K.I.S.S principle upheld here

PM  EMAIL  GALLERY  Attn:RR  Quote
04-09-2010 03:59 PM  8 years agoPost 49
Rototerrier

rrVeteran

Fayetteville, GA - USA

My Posts: All  Forum  Topic

Fuel in the bulb?
Bubbles in the bulb?
This was what caused mine to run like crap for weeks until Al at hanson finally gave me 2 super thick teflon gaskets. The carb no longer gets any heat whatsoever and the bulb is always full and bubble free.

I might have missed it, but have you completely disconnected the GV1 and run the servo straight to the RX?

I have been struggling to solve a little issue with my GV1 where if I run it up too quickly, it will go wide open. If I then immediately bring the throttle back down and then back up, it will then go to the set headspeed. Weirdest thing. I have been meaning to post that, but haven't had time and it isn't a big issue since it only happens about 25% of the time and I can quickly resolve it with a throttle pump. Maybe yours is just going wide open and doesn't easily resolve itself like mine?

Could it be your GV1? Again, sorry if I missed this somewhere...I read thru pretty quickly.

PM  EMAIL  GALLERY  Attn:RR  Quote
04-09-2010 08:37 PM  8 years agoPost 50
Helihover

rrApprentice

Norway

My Posts: All  Forum  Topic

I have read this thread now. Pull the GV-1, and plug the throttle servo into the RX. The GV-1 only masks problems and aggrivates them!
To me it sounds like you have a lean run.
Have you set the needles back into factory default positions? Do that and try again

Good luck

Tried planks, but after all, wood is best on the bonfire.

PM  EMAIL  GALLERY  Attn:RR  Quote
04-09-2010 08:43 PM  8 years agoPost 51
carpman

rrVeteran

Spain

My Posts: All  Forum  Topic

Waiting for some new gaskets before I bother doing anything else. I have some new insulator gaskets been sent and if they don't work its out with the motor and new head gaskets or whatever is needed...

It isn't the GV1, run direct it still does the same, fuel in bulb, no bubbles etc etc....

KEVIN
Trex 500ESP | Trex 600NSP | Trex 700 Gasser | MA Spectra G

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-17-2010 09:03 PM  8 years agoPost 52
carpman

rrVeteran

Spain

My Posts: All  Forum  Topic

Wally was kind enough to send me a set of his carb gaskets, I have lost enthusiasm with the Spectra but thought I would put them on and give it another go.................thanks Wally but they haven't helped.

I am sick and tired of spending money on this, my head is all over with work and personal matters at the minute and this driving me nuts is not helping, I want to go and fly to releive some stress not add to it!

Anyway I tried to do a video, doesn't show much and I have decided it must be time to pull the motor and throw it in the sea or send it back to Hanson or let Wally have a go.

http://www.youtube.com/watch?v=CSbwtYX96bI

You might not hear me in the video, but basically it is behaving erratic, idles okay then doesn't do anything while applying throttle. Then it will pick up and then drop off, at times it gets into a hover and then drops to an idle by itself. This is governor disabled, turning that on does nothing at all...

I'm tired of all this at the minute, is there not a magic pill to make it all okay

KEVIN
Trex 500ESP | Trex 600NSP | Trex 700 Gasser | MA Spectra G

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-17-2010 09:18 PM  8 years agoPost 53
Rototerrier

rrVeteran

Fayetteville, GA - USA

My Posts: All  Forum  Topic

After watching that, are you absolutely sure the throttle percentages in your radio match the output on the servo?

Take the head off the thing and without any electronics on, just crank the engine and manually operate the throttle. If it will rev like it should, then atleast you will know it's electronics. If it doesn't rev like it should, then start inspecting the carb or send it in.

Just seems to me that the throttle is just not opening up.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-17-2010 09:53 PM  8 years agoPost 54
carpman

rrVeteran

Spain

My Posts: All  Forum  Topic

Unless its not opening properly when the motor is running? It works fine on the bench, butterfly opens as it should. Its all the same settings and curves that it flew when it worked fine, the servo arm was working during the test...

It just sounds terrible even at idle, not like it used to. I can buy another carb, but just getting tired of spend, spend, spend and no difference...

Helibug flies great

KEVIN
Trex 500ESP | Trex 600NSP | Trex 700 Gasser | MA Spectra G

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-17-2010 09:58 PM  8 years agoPost 55
rbort

rrProfessor

Franklin, MA - USA

My Posts: All  Forum  Topic

This might be simple
Check the setscrew that holds the arm on the throttle. It could be loose and the throttle arm is moving but the carb is not under vibrations and the spring is closing it.

Also, if that is not it, check the insulator and make sure the pumping hole to the carb is open to the cylinder, not blocked by an incorrectly installed gasket.

Good luck,

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3300 flts
Whiplash V1-2 Hanson 300, 1590 flts
Whiplash V2 Hanson 300, 437 flts

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-17-2010 10:05 PM  8 years agoPost 56
carpman

rrVeteran

Spain

My Posts: All  Forum  Topic

Thanks Raja, will take a look and sorry for not having the enthusiasm earlier to try it again. It sat on the shelf for 3-4 weeks and I hoped the gaskets would solve it, but I should have known better I have had several tries at that and a few different ones on and no difference...

...time to move on and try other stuff or in the end pull it and send it away...

KEVIN
Trex 500ESP | Trex 600NSP | Trex 700 Gasser | MA Spectra G

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-17-2010 10:10 PM  8 years agoPost 57
rbort

rrProfessor

Franklin, MA - USA

My Posts: All  Forum  Topic

I think #1 is your problem
I just solved that issue yesterday on someone else's gasser. I held the half moon thing on the bottom of the carb and throttled up and low and behold it did it while I'm holding it steady. That's how I discovered the setscrew to be loose.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3300 flts
Whiplash V1-2 Hanson 300, 1590 flts
Whiplash V2 Hanson 300, 437 flts

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-17-2010 10:15 PM  8 years agoPost 58
Malc1

rrKey Veteran

EVESHAM,UK

My Posts: All  Forum  Topic

God Kevin

I thought I had patience...
All seriously frustrating I know but someone will get the answer I sure.

Raja may have something.

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

PM  EMAIL  GALLERY  Attn:RR  Quote
05-17-2010 10:46 PM  8 years agoPost 59
carpman

rrVeteran

Spain

My Posts: All  Forum  Topic

Onwards and upwards so the saying goes, but not the case with Spectra

I'll check that Raja and report back, I can test that without going to the field...

KEVIN
Trex 500ESP | Trex 600NSP | Trex 700 Gasser | MA Spectra G

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
05-17-2010 11:51 PM  8 years agoPost 60
pgkevet

rrKey Veteran

Wales

My Posts: All  Forum  Topic

..just think positive... at least you have a clutch

My throttle feedback pot went odd and that only showed up on vibration of engine running...fixed by futaba service..but no good without the other bits...less than 2 flights a month this year..

pgk

PM  EMAIL  Attn:RR  Quote
WATCH
 5 pages [ <<    <     1      2     ( 3 )     4      5     NEXT    >> ] 3546 views POST REPLY
HomeAircraftHelicopterGasser Model RC HelicoptersOther › Spectra G - Another "Never Ending Story"
 Print TOPIC  Make Suggestion 

 13  Topic Subscribe

Monday, August 20 - 12:24 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online