RunRyder RC
WATCH
 2 pages [ <<    <     1     ( 2 )    >    >> ] 3853 views POST REPLY
HomeAircraftHelicopterGasser Model RC HelicoptersOther › What is the best oil for Zenoah GT-80
04-20-2011 11:17 PM  7 years agoPost 21
Sig Dawg

rrApprentice

Yorkton, Sask., Canada

My Posts: All  Forum  Topic

Just a thought, but can you swap pipes between the two cylinders to see if the hot cylinder switches? Or possibly try massaging the intake with a sanding drum to even out the fuel charge between cylinders?

Jason

PM  EMAIL  Attn:RR  Quote
04-21-2011 03:59 AM  7 years agoPost 22
RC-Aftermarket

rrNovice

Custer Park IL.

My Posts: All  Forum  Topic

'Premium Plus 2-Cycle Outboard Oil' branded Quicksilver, which I believe is Mercury marine
.

This I found to be the best so far, very clean running in the 27cc & 30cc.
non-synthetic 5oz for break in.
synthetic 4oz after.

Wally
RJX- X90 Z 30cc
RJX X90- C-30cc
Radikal 20 C-30cc
Predator Z-30cc

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
04-21-2011 05:07 AM  7 years agoPost 23
Fdykes

rrNovice

Laurel, MS usa

My Posts: All  Forum  Topic

I run Coleman camping fuel with Cool Power 2cycle oil in my gasser with no problems or any build up at all. Also run Cool Power oil in my Rotax 277 for years in my ultralite no build up.

Ole FD AMA4500 Team JR & Team Cool Power

PM  EMAIL  GALLERY  Attn:RR  Quote
04-21-2011 07:25 PM  7 years agoPost 24
Skipper Billy

rrNovice

Scotland

My Posts: All  Forum  Topic

10 - 15 degrees is perfectly acceptable - in fact its pretty good. Just make sure you tune the carb to suit the leanest side. The other side will be slightly rich but thats not a problem.

Read the plug on the lean side - if you have a kill switch the best way is to use full power under load eg climbing vertically for a good 5 - 10 seconds - cut the motor at full throttle and dead stick/glide it down - pull the plug from the lean side and go from there.

PM  EMAIL  Attn:RR  Quote
04-21-2011 08:03 PM  7 years agoPost 25
Chris Bergen

rrElite Veteran

cassopolis, MI USA

My Posts: All  Forum  Topic

cut the motor at full throttle and dead stick/glide it down
With the Copterworks "B" model at quite a few Thousands of $$$?

BIG cojones!!

Chris D. Bergen

PM  EMAIL  GALLERY  Attn:RR  Quote
04-21-2011 08:45 PM  7 years agoPost 26
MombasaFlash

rrNovice

Paris, France

My Posts: All  Forum  Topic

Thanks for those words of wisdom Skipper. Maybe I'll try it another way?

Don't forget we are talking BIG helicopters here - not aeroplanes.

Whoever has the most toys when he dies wins.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
04-21-2011 08:49 PM  7 years agoPost 27
rbort

rrProfessor

Franklin, MA - USA

My Posts: All  Forum  Topic

yeah...!
Not exactly throttle hold on purpose material when you got 40 lbs of helicopter up there...!

-=>Raja.

MA 1005 Hanson 280, 4220 flts
Spectra 27 3DMax, 3310 flts
Whiplash V1-2 Hanson 300, 1618 flts
Whiplash V2 Hanson 300, 473 flts

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
04-21-2011 09:26 PM  7 years agoPost 28
MombasaFlash

rrNovice

Paris, France

My Posts: All  Forum  Topic

Hi there Raja,

The standard 'Dual-Jewel' is still doing sterling service on the Raptor delivering 5v to the radio and 12v to the video downlink.

On the AF25B I have swapped the 1220/34 motor for a 4120/20. Rotating one-to-one with the heli motor at around 9200rpm it pumps out 20v at up to 50A.

It's a bit of a mutha though and strips 1/4" belts in no time. Had to change it all to 3/8" belts and pulleys. So far, so good.

Whoever has the most toys when he dies wins.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
04-21-2011 09:34 PM  7 years agoPost 29
Skipper Billy

rrNovice

Scotland

My Posts: All  Forum  Topic

Hi MonbassaFlash - sorry I forgot! I have onlu sed the GT80 in planks !!!

Still holds good though - a plug read is worthless unless the motor is cut whilst under max load at full throttle.

Err on the rich side if in ANY doubt!

PM  EMAIL  Attn:RR  Quote
04-21-2011 10:25 PM  7 years agoPost 30
rbort

rrProfessor

Franklin, MA - USA

My Posts: All  Forum  Topic

Nice!!
It's a bit of a mutha though and strips 1/4" belts in no time. Had to change it all to 3/8" belts and pulleys. So far, so good.
Yeah there is a lot of load on that belt especially when you start pulling out more and more amps. I would go with the widest belt you can to increase the contact area and reduce the likelyhood of stripping. Even with the standard units when belt driven I've seen 3/8 inch belts alot more reliable than 1/4 inch ones.

Someday if I make it down to France I'd love to hook up with you and do some aerial movie shots!

-=>Raja.

MA 1005 Hanson 280, 4220 flts
Spectra 27 3DMax, 3310 flts
Whiplash V1-2 Hanson 300, 1618 flts
Whiplash V2 Hanson 300, 473 flts

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <     1     ( 2 )    >    >> ] 3853 views POST REPLY
HomeAircraftHelicopterGasser Model RC HelicoptersOther › What is the best oil for Zenoah GT-80
 Print TOPIC  Make Suggestion 

 9  Topic Subscribe

Thursday, September 20 - 5:31 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online