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HelicopterEngines Plugs Mufflers Fuel › novarossi .57 experts help
04-08-2011 05:33 AM  6 years agoPost 1
wc_wickedclown (RIP)

rrProfessor

long beach calif

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here it is guys

i have to do this my self i am a mechanic but im some what new to nitro tuning and i do understand the tuning concept

first question : is it normal for this motor to leave a pond of fuel on the ground while running the motor like i am doing in the video ?

i dont have this much fuel on the ground with my os .60

i have the low needle 4 turns open and the high needle 2 turns open.

i have removed a ring from the carb so it sits better for no air leakage around the carb body.

the motor seems to be running really rich after a tank of fuel the glow plug is no good.

motor reached max temp of 204 f

im tring to setup the low end then when i make it to the field i can setup the mid-range in the air.

i gotta get this to run right before i go to the field .

i have to learn how to do this my self then if i need any other advice i can ask the guys at the field .

none of the guys that i know of at our field has this motor.

i ran the thr @ 0-15-35-35-35 hs is 1750.

it seemed like when i closed the low needle 3 turns open the motor would not start but i still had the high needle 2 turns open.

after i get this part done ill follow Bert's instructions which i do understand on how to tune the motor to get good performance out of it without running the motor to lean .

just right now it seems like its running way to rich.

should leave the glow plug out until the next run ? its always hyper locked hope leaving the plug out wont cause any problems until this motor is broken in .

hope someone can help

Watch at YouTube

Insha Allah made in america

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04-08-2011 06:50 AM  6 years agoPost 2
bigwolf1

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USA

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you have to open the low needle till it stops then close it 4 turns. start there, should be close depending on what shim you have installed and the fuel you are running.

MAH blade Rep
Trex700LE
Magnum fuels

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04-08-2011 12:11 PM  6 years agoPost 3
heli-cuzz

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Pittston, Pa. USA

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is this the engine you have?

Novarossi Engine REX 57 HR - 3DS V2 w/ 3 Needle Carbs

if it is.. here's a link to the manual.

Fury 55 NIB Furion6 CGY750 fbl helicopter-Frenzy CGY750 fbl nitro-Frenzy fbl NOBAR90

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04-08-2011 01:23 PM  6 years agoPost 4
heli-cuzz

rrElite Veteran

Pittston, Pa. USA

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Novarossi 57

Fury 55 NIB Furion6 CGY750 fbl helicopter-Frenzy CGY750 fbl nitro-Frenzy fbl NOBAR90

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04-08-2011 01:37 PM  6 years agoPost 5
Heli 770

rrProfessor

USA.

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Low Needle, Open (CCW) then Close 4 turns.
High Needle, Close (CC) then Open 2 turns.

Nitro %
10%, 0.2 shim
15-20%, 0.3 shim
30%, 0.4 shim

You Need a 2100-2200 head speed to make that motor work right.
You Need to stop the Fuel leak first.

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04-08-2011 03:38 PM  6 years agoPost 6
wc_wickedclown (RIP)

rrProfessor

long beach calif

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bigwolf1 you have to open the low needle till it stops then close it 4 turns. start there, should be close depending on what shim you have installed and the fuel you are running.
oops OK i see the first problem i need to open the low needle then close it .

i did the opposite thank you ill correct that.
heli-cuzz is this the engine you have?

Novarossi Engine REX 57 HR - 3DS V2 w/ 3 Needle Carbs
yep but the two needle cuzz

i have the manual guess i was reading upside down again
Heli 770 Low Needle, Open (CCW) then Close 4 turns.
High Needle, Close (CC) then Open 2 turns.

Nitro %
10%, 0.2 shim
15-20%, 0.3 shim
30%, 0.4 shim

You Need a 2100-2200 head speed to make that motor work right.
You Need to stop the Fuel leak first.
im using the shim for 30% and 30% fuel.
and i thought the turbo crank kicked in at 1850 rpm
thanks for correcting me.

there is no leak all that fuel is comin from the exhaust because i had closed the low needle then opened it rather then opening it and closing it im thinking now.

this is a plug that has been ran to rich ?

if it had been ran to lean it would had been like a rusty brown right ?

now if i adjust the high needle i dont need to touch the low needle right ? just the high needle at the field .

im at my 999th video.

video #1000 has to be this bird in the air.

i think i got it now ill upload the new video after 12 noon the weather is looking good.

heli770 a year ago you helped me build this heli remember when and how we setup the push/pull on the cyclic ?

i can tune this momma.

im so happy now cant wait to re-run the motor today.

thanks fellows anything else ? if not guess i better get ready to buckle up
ill keep my eye on my temps of coarse

Insha Allah made in america

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04-08-2011 03:59 PM  6 years agoPost 7
Heli 770

rrProfessor

USA.

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Tubo Crank is Happy at about 18,500rpm.

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04-08-2011 08:48 PM  6 years agoPost 8
wc_wickedclown (RIP)

rrProfessor

long beach calif

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Heli 770 Tubo Crank is Happy at about 18,500rpm.
thank you.

and this plug the black around it means its been ran to rich right ?

Insha Allah made in america

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04-15-2011 11:19 PM  6 years agoPost 9
leadlag

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Worthing UK

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That black plug is a sign of running rich.

Normal running should be a brown/light brown colour.

I personally run my 57 on 20% Rapicon with all the head shims in and a O.S no 8 plug. Runs a treat. Loads of power on a Outrage Evo pipe.

The Novarossi likes to rev so 18500 is the place to be.

I have a two needle carb. Low needle controls low and mid range mixture which unlike other engines.

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04-16-2011 04:18 AM  6 years agoPost 10
wc_wickedclown (RIP)

rrProfessor

long beach calif

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leadlag That black plug is a sign of running rich.

Normal running should be a brown/light brown colour.

I personally run my 57 on 20% Rapicon with all the head shims in and a O.S no 8 plug. Runs a treat. Loads of power on a Outrage Evo pipe.

The Novarossi likes to rev so 18500 is the place to be.

I have a two needle carb. Low needle controls low and mid range mixture which unlike other engines.
got it and thank you for the advice .

im waiting on new clutch fan and clutch

then ill bump the hs up to 1850

Insha Allah made in america

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04-16-2011 07:21 PM  6 years agoPost 11
oragami

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Florida

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tuning

I know nothing about this fuel you are running, so i cannot help you with tuning the engine. But I can make your life a lot easier by suggesting that you tune your engine like I did mine, which is by heat. Simply go out and buy a Venom on board temp guage, and start tuning the engine accorgingly. If you are 4 turns out on a needle, you have something terribly wrong. On 30% cool power fuel I went by factory suggestions for tuning and mine ran perfect out of the box. As far as the O-Ring? I left mine in, and have 125 flights with no problems, so I don't understand the fuss on that subject. If you need help, just PM me.

Craig

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04-16-2011 07:49 PM  6 years agoPost 12
wc_wickedclown (RIP)

rrProfessor

long beach calif

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oragami tuning

I know nothing about this fuel you are running, so i cannot help you with tuning the engine. But I can make your life a lot easier by suggesting that you tune your engine like I did mine, which is by heat. Simply go out and buy a Venom on board temp guage, and start tuning the engine accorgingly. If you are 4 turns out on a needle, you have something terribly wrong. On 30% cool power fuel I went by factory suggestions for tuning and mine ran perfect out of the box. As far as the O-Ring? I left mine in, and have 125 flights with no problems, so I don't understand the fuss on that subject. If you need help, just PM me.

Craig
you are a fantastic guy and i wholeheartedly would like to thank you and all the guys from RR for your help and advice.

after i got my needles adjusted to factory spec with the 30%fuel and shim inserted .

got ready to fire her up and realised that i had not used loctite on my fan screws and ruined me clutch and fan .
lesson learned cost me 85 bucks for the lesson because im going with a quick uk fan and clutch.

i should be ok if not you will be the first person i contact
again thank you for being a scholar and a gentlemen and a great rr member
you really warmed my heart brother

Insha Allah made in america

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04-20-2011 04:09 AM  6 years agoPost 13
oragami

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Florida

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Anytime man, here to help.

Craig

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04-20-2011 12:44 PM  6 years agoPost 14
airdodger

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Johnston USA

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Seems like an odd throttle curve. You have the carb full open at full throttle right?

Chris

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04-20-2011 03:17 PM  6 years agoPost 15
wc_wickedclown (RIP)

rrProfessor

long beach calif

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airdodger Seems like an odd throttle curve. You have the carb full open at full throttle right?
yes it full open at full throttle but you cant run a nitro full
throttle unless you use a tach or you can tell by sound that you are not exceeding the max head speed recommended.

Insha Allah made in america

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04-20-2011 11:46 PM  6 years agoPost 16
airdodger

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Johnston USA

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If you are turning that headspeed with the throttle not near full open you are restricting the fuel, along with that you deprive the engine of the oil it needs at that rpm. Oil has a large impact on the cooling of these two stroke heli engines. If you think it is overspeeding you just pull the stick back. With the pitches we use today I would not worry about overspeeding but more about bogging and overheating. The pitch curves and the throttle curves have a symbiotic relationship. Get them way out of sync you can't tune the engine correct.

Chris

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04-21-2011 02:53 AM  6 years agoPost 17
wc_wickedclown (RIP)

rrProfessor

long beach calif

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airdodger If you are turning that headspeed with the throttle not near full open you are restricting the fuel, along with that you deprive the engine of the oil it needs at that rpm. Oil has a large impact on the cooling of these two stroke heli engines. If you think it is overspeeding you just pull the stick back. With the pitches we use today I would not worry about overspeeding but more about bogging and overheating. The pitch curves and the throttle curves have a symbiotic relationship. Get them way out of sync you can't tune the engine correct.
if the thr at half stick with 35% thr curve gives me 1700 rpm

if i allowed full throttle with the thr curve @100% could you imagine what my head speed would be ?

im sure it would be more then 2250 rpm ?

im using 10 degrees of pitch + and -

and overspeeding can damage bearings and other problems
The pitch curves and the throttle curves have a symbiotic relationship
i would agree if this were an electric helicopter.

my raptor 30 and 60 nitros were setup with the same thr curves.

i do have a gov to help out but i cant use it until i tune the motor and adjust the hs.

you cant and dont adjust the hs on a nitro by adjusting the carb needles and if it runs hot you rich-in the carb needles

even some electric helicopters you cant run them 100% wide open
you have to judge the head-speed in relation to the pitch curves
to be safe.

someone please correct me if im wrong.

Insha Allah made in america

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04-21-2011 11:48 AM  6 years agoPost 18
airdodger

rrElite Veteran

Johnston USA

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I already corrected you, and you just don't believe me. Did you miss the part about pulling the throttle back if you think it's overspeeding and about the oil. The relationship of the curves on a nitro are more critical than an electric. You don't adjust the headspeed on a nitro by using the needles, Really! You obiviously know more about this than me so I can't be any help. Good luck.

Chris

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04-21-2011 03:57 PM  6 years agoPost 19
wc_wickedclown (RIP)

rrProfessor

long beach calif

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airdodger You don't adjust the headspeed on a nitro by using the needles
you are correct and i never said that.

and if i did i was misunderstood.
Did you miss the part about pulling the throttle back if you think it's overspeeding and about the oil.
yes i missed the part about pulling the throttle back hmmmm.

but is it not the same thing if you use the thr curves in the tx to retard the throttle rather then going back and forth taching the head then wrenching on the throttle would be more difficult and take more time to do.

and please forgive me i know little to nothing as you can see
my suggestions are only questions my grammar sucks sorry

Insha Allah made in america

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04-21-2011 10:02 PM  6 years agoPost 20
airdodger

rrElite Veteran

Johnston USA

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In normal mode the curve should be something like 0-25-60-80-100 with atv around a 100. The pitch should be around 5 at mid stick hover if you think it will pull 11 use 11 top pitch. It is important that the throttle is advancing before the pitch. Adjust the high speed needle so the smoke trail is steady and smoking good, do a vertical pull and see if the head slows down it will be apparent. Check to see if the engine is getting too hot, if it slowed down always open the needle first, if opening the needle made it worse lean it, if neither works you are pulling too much pitch. If you are not sure use a new plug and pull it, should look no different than when you installed it. If the coil looks frosted or distorted or any color at all it is too lean. The throttle has to be full open to adjust the high speed needle. If the engine does not settle right down after you throttle back it is too lean and getting hot fix it, if at anytime you think it is too lean don't wait a second fix it. It is easier on the engine to rev than lug it, to a point. Listen to the other replys that stated the engine likes a high headspeed in the 2100 range. I don't know if the low mid needle affects the high if it does you need to have it open enough to supply the high. If you can get with somebody with experience they will be a big help.

Chris

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