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billiano · 12-11-2010, 06:12 PM

Everything was ok for my YS91SR also except the fact..
that the copper ring which attached on the upper position of the sleeve
was bigger than the diameter of the head's flange so ..

it was not sealed completely flat and I had a small oil leak just underneath the spark plug.

I kept running the stock head ...
Now I think of removing a small part of the outter perimeter of the copper flange to test again the head..

Pulento · 12-11-2010, 07:55 PM

Does the sleeve fit ok ?

I mean if the sleeve fits perfectly so it is not a machining problem. Sometimes the shims doesn't seat perfectly and it gets squashed in between with a consequent leak. It happened on my stock SR once.

The nice thing about this head is that it works on the old SR and the new 3DS

betta2500 · 01-19-2011, 08:26 PM

hey pulento how is the performance?how many gall?

TooLy · 01-20-2011, 05:44 AM

Does it fit the latest YS ? the SRS/SR-3DS ?

Pulento · 02-03-2011, 09:17 AM

Yes it fits. I installed it on one of my 3DS and it works just fine. Haven't flied it too much since I was on vacations and my ENV is waiting some spares. The few flights I made I was running a rich mid, this head delivers a bit more power on mid.

And I have to check RPMs since the ENV has 8.12 instead of 8.21 of the T700.

betta2500 · 07-12-2012, 10:31 AM

any one interested in a dual plug head for this engine?

jgalen0025 · 07-12-2012, 01:05 PM

what about os 105/55hzr would def try that

betta2500 · 07-12-2012, 01:36 PM

Im working on the drawing right now!

Elgyn · 07-12-2012, 02:35 PM

Would the 50 hyper would benefit from the duel plug?

stupid question but is the hyper 50 and the 55 the same head?

Dr.J · 07-13-2012, 11:36 AM

Hi, I'm looking for a dual plug head for my ys 91 SR and am told the Viper head is not a good fit with the new YS engines. Can anyone here recommend one or have one for sale?

thanks,

John

Cgarr · 07-13-2012, 11:51 AM

Quote:

Originally Posted by Jafa

Cars and various engines use multiple spark plugs to get the flame front to travel sideways faster and then start pushing the piston down

You can get a smoother running engine

You can use two different heat ranges - makes the idle really smooth on one plug and the stunt mode really smooth on the other plug

Some argue that it's also a bit of a safety against a flame out due to loosing the plug in flight

Indeed:

betta2500 · 07-13-2012, 11:51 AM

I have a few in stock so let me know!

Dr.J · 07-13-2012, 11:52 AM

betta, I e-mailed you via the address at the beginning of this thread, but received no response. What is your e-mail?

Yes, I'm interested.

thanks,

John

jsjb@sympatico.ca

betta2500 · 07-13-2012, 12:05 PM

Betta2500@aol.com

Are u jhon?
If so i did receive an email and i did responded it!

Any way let me know!

Thank u!

Jafa · 07-13-2012, 08:11 PM

Quote:

Originally Posted by jgalen0025

what about os 105/55hzr would def try that

In the old days we used dual plug heads on the OS50
We never noticed any benefit

It's only on the 90's that we noticed benefits

I assume it would work well on the OS105/YS120

jgalen0025 · 07-14-2012, 09:10 AM

Why is that it benefits only 90 size and not 55

Jafa · 07-14-2012, 09:33 AM

I have no idea why - that was our experience

betta2500 · 08-29-2012, 01:23 PM

finally anodize!
what u think?

jwatts007 · 08-29-2012, 03:18 PM

Are you doing any for the YS 120.....

betta2500 · 08-29-2012, 03:23 PM

Yes,pretty soon!

12-11-2010, 06:12 PM	#61 (permalink)
billiano Registered Users My HF Map location Join Date: Dec 2007	Everything was ok for my YS91SR also except the fact.. that the copper ring which attached on the upper position of the sleeve was bigger than the diameter of the head's flange so .. it was not sealed completely flat and I had a small oil leak just underneath the spark plug. I kept running the stock head ... Now I think of removing a small part of the outter perimeter of the copper flange to test again the head.. __________________ Bill Esprit Model Flying, TDR Rigid x2 F9 Fiberglass Europe Canopies

12-11-2010, 07:55 PM	#62 (permalink)
Pulento Registered Users My HF Map location Join Date: Nov 2007	Does the sleeve fit ok ? I mean if the sleeve fits perfectly so it is not a machining problem. Sometimes the shims doesn't seat perfectly and it gets squashed in between with a consequent leak. It happened on my stock SR once. The nice thing about this head is that it works on the old SR and the new 3DS __________________ 6HV, BLS451, Quark+MKS BLS990, Jive 80HV+Compass 540KV 3D+, Savox 1258TG, Spartan DS760+MKS BLS990, OS55HZ+Funtech B320 Rave ENV, Savox 1267MG@6.6V, BeastX+MKS BLS990, YS91SR+Hatori SB19 All controlled by a DX8

01-19-2011, 08:26 PM	#63 (permalink)
betta2500 Registered Users Thread Starter Join Date: Jan 2006	ys head hey pulento how is the performance?how many gall?

01-20-2011, 05:44 AM	#64 (permalink)
TooLy Registered Users Join Date: Aug 2005	Does it fit the latest YS ? the SRS/SR-3DS ? __________________ ~Roei~

02-03-2011, 09:17 AM	#65 (permalink)
Pulento Registered Users My HF Map location Join Date: Nov 2007	Yes it fits. I installed it on one of my 3DS and it works just fine. Haven't flied it too much since I was on vacations and my ENV is waiting some spares. The few flights I made I was running a rich mid, this head delivers a bit more power on mid. And I have to check RPMs since the ENV has 8.12 instead of 8.21 of the T700. __________________ 6HV, BLS451, Quark+MKS BLS990, Jive 80HV+Compass 540KV 3D+, Savox 1258TG, Spartan DS760+MKS BLS990, OS55HZ+Funtech B320 Rave ENV, Savox 1267MG@6.6V, BeastX+MKS BLS990, YS91SR+Hatori SB19 All controlled by a DX8

07-12-2012, 10:31 AM	#66 (permalink)
betta2500 Registered Users Thread Starter Join Date: Jan 2006	ys 120 any one interested in a dual plug head for this engine?

07-12-2012, 01:05 PM	#67 (permalink)
jgalen0025 Registered Users Join Date: Jan 2011	what about os 105/55hzr would def try that __________________ Vcontrol-Vbar-Nitro Gov Whip Nitro 105 Awaiting V2 Conversion Synergy N7 105 Perspective is key

07-12-2012, 01:36 PM	#68 (permalink)
betta2500 Registered Users Thread Starter Join Date: Jan 2006	os 105 an 55 Im working on the drawing right now!

07-12-2012, 02:35 PM	#69 (permalink)
Elgyn Registered Users Join Date: Jul 2011	Would the 50 hyper would benefit from the duel plug? stupid question but is the hyper 50 and the 55 the same head? __________________ TT titan x50 / TT mini titan / JR Vigor CV... ...vbar'd / 700 airwolf streched JR Voyager mechanics / JR Venture CP

07-13-2012, 11:36 AM	#70 (permalink)
Dr.J Registered Users Join Date: May 2006	Hi, I'm looking for a dual plug head for my ys 91 SR and am told the Viper head is not a good fit with the new YS engines. Can anyone here recommend one or have one for sale? thanks, John

07-13-2012, 11:51 AM	#72 (permalink)
betta2500 Registered Users Thread Starter Join Date: Jan 2006	ys sr 91 I have a few in stock so let me know!

07-13-2012, 11:52 AM	#73 (permalink)
Dr.J Registered Users Join Date: May 2006	betta, I e-mailed you via the address at the beginning of this thread, but received no response. What is your e-mail? Yes, I'm interested. thanks, John jsjb@sympatico.ca

07-13-2012, 12:05 PM	#74 (permalink)
betta2500 Registered Users Thread Starter Join Date: Jan 2006	ys sr 91 Betta2500@aol.com Are u jhon? If so i did receive an email and i did responded it! Any way let me know! Thank u!

07-14-2012, 09:10 AM	#76 (permalink)
jgalen0025 Registered Users Join Date: Jan 2011	Why is that it benefits only 90 size and not 55 __________________ Vcontrol-Vbar-Nitro Gov Whip Nitro 105 Awaiting V2 Conversion Synergy N7 105 Perspective is key

07-14-2012, 09:33 AM	#77 (permalink)
Jafa Registered Users Join Date: Apr 2005	I have no idea why - that was our experience __________________ Rave 450 \| Lepton \| Logo 400/500/600 \| Aeolus \| Sceadu \| Freya \| Avant FX \| Raptor G4 Gryphon field rep

08-29-2012, 01:23 PM	#78 (permalink)
betta2500 Registered Users Thread Starter Join Date: Jan 2006	ys heads finally anodize! what u think? Attached Thumbnails

08-29-2012, 03:18 PM	#79 (permalink)
jwatts007 Registered Users Join Date: Aug 2010	Are you doing any for the YS 120.....

08-29-2012, 03:23 PM	#80 (permalink)
betta2500 Registered Users Thread Starter Join Date: Jan 2006	ys heads Yes,pretty soon!

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