Glowgeek

Whether or not a meth/glow engine needs nitro to run and tune correctly depends greatly on the compression ratio of the engine. There is a broad range of compression ratios amongst YS and Saito engines. Some of them would run fine with 0% nitro and others would be difficult if not impossible to tune with no nitro. The YS 115 WS for instance has a very low compression engine which is designed to run on like 20% nitro minimum. There are several low compression Saitos as well that I feel would run poorly on 0% nitro with glow ignition.

If you're thinking that the OS G5 gasser plug may help lower compression meth fueled engines run better on 0% nitro you may be on to something there, not sure. There is a catalytic reaction between platinum and alcohol as well as between platinum and gasoline. If the G5 gasser plug has a higher platinum content than a standard glow plug to run with gas then that may help.. Again, not sure.

It would be an interesting experiment to run 0% nitro in a low compression Saito, like a later version FA65 for instance, to see if the G5 gasser plug helps.

the Wasp

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we share and we care !! LOL, click my link, check it out !

GAS/GLOW HOW TO....

Jim

erieqc

Thanks I’ve have it book marked. The engine sizes I’m interested in doing this to would be in the smaller size range 50-90 4 stroke ys and Saito.

acdii

I hope my YS110 doesn't need high nitro fuel, or it will continue to sit on the shelf, and I will find a Saito for the Mustang instead.

Captcrunch44

I have a engine if you need one

Glowgeek

Acdii, all YS engines are said to run well on 20% nitro fuel. There are lots of reports out there where they run fine on 15% and a few reports of peeps running 10% with no issues except down on power a bit.

The YS115WS (Warbird Special) was developed specifically for warbird pylon racing. It has a lower than normal compression ratio and is designed for running 60% nitro or some such craziness. It is a monster!

FlyerInOKC

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60% Nitro I couldn't afford to run it with that much Nitro. Last time I looked it was almost $90 a gallon.

Captcrunch44

Well that must be how those YS’s get there power.
they need 60% nitro. That most be why I haven’t had good luck with them. They don’t preform with less than 30% nitro.

Jesse Open

Must say that I have run my YS on 10% to 14%. Never needed nor wanted more even though I am well aware that they can handle it.. They make tremendous power and run very, very well at the 10 and 14% percentages. The very same fuel I used with Saitos .
But then, I have only started running them since 1979
The fact than handle 60% just indicates how tough they are.


Lonnie,

Sorry but I didn't make it to the PO with the 120/125 tailpiece. Will send it tomorrow.

Since it was here and I was bored last night,
I took the key measurements. All nominal dimensions are the same.

I will however send the genuine 125 tail.

Glowgeek

Whew, that's a relief. I thought it may have gotten lost in the mail. Thanks for the update Gary.

acdii

The YS 63 ran pretty good on the 15% I have, but I still need to tune it, I had issues with the regulator that caused it to flood after a while, hopefully I got the regulator working properly now, it was gummed up inside. I may bench the 110 to see how it runs, I have Wildcat 15% that I run all my engines on, but also have a case of SIG 15% 4 stroke to try.

Glowgeek

Chirp-chirp.......Chirp, chirp.....silence. Hey, who killed my cricket!

FlyerInOKC

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Somebody dropped an OS on him!

Glowgeek

Glowgeek

Just picked up a Don's Custom Models 1/4 scale 100" WS Super Chipmunk. I have no idea what to do with it but couldn't pass it up that cheap. I don't have an engine for it and can't afford one either.

the Wasp

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hey you, you Hog lovers, check this out. I thought it looks to be in the Hog family but it's smaller. I like it. I like the way mid wings fly.
I would think it could be built 5% larger with no problem,, that would add 3 inches to the wing, but I can't do the numbers for the Fuse cause I don't have the stock length.

TMTT | The Balsa Workbench

Jim

the Wasp

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dang LOL, it's too big for my MVVS 35cc gasser, I could of had it sold LOL

Jim

FlyerInOKC

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That is a blast from the past I like it. Ask Rob maybe since he already has the cut file he can bump it up for you? $65.00 for the short kit isn't a bad price for that size a plane it is now.

FlyerInOKC

My Feedback: (6)

100" is a serious size Chipmunk! I don't where I would store it or how I would get it to he field. Maybe you could saddle it and ride to the field?

Glowgeek

Yeeeeeehaw, giddy up Chippie!

I'm between two giant boxes and a hard place. Hmmmm

the Wasp

My Feedback: (1)

Mike, check out my link, scroll down and click on the Print, then at the bottom enlarge it a bit, I like the side view. as stock it should weigh no more than 4.3 pounds and fly a 35 to 40. so enlarging it a bit it should be good for a 61.

https://aerofred.com/details.php?ima...3k593gnjb6m3s6

Jim

FlyerInOKC

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I think you are right and it has a very classic style to it. Oh no get that off the screen too many projects already!

Glowgeek

I love those classic designs. I had a 1939 Air Trails Sportster like this one.



Mine was covered in translucent red and yellow and converted from free flight to 3 channel. I was planning on finding a Saito 30 for it but every time I took it up more glue joints popped. It finally ate dirt when the fuse behind the cabin let go. Sad, I admired the simplicity of the design. So small and cute.

I recently discovered Laser Designs sells the short kit.....hmmmm

FlyerInOKC

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That is a great looking airplane!

Hobbsy

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Lonnie, here is a number for the Saito 1.15.

Saito====1.15
Prop====G-Sonic 15 x 8
Plug====Glo-Devil 4c for Saito and Enya
Exhaust=Stock cast muffler
Fuel====Wildcat 2/4 10% full synthetic
Max rpm=8,425 at full peak
Idle=====1,825

I will run a Xoar 15 x 8 later.