I'm also looking for a home for a G20EI...
Please let us know if a G20 would fit...

Ta...about to put one in a WM SuperSportsSenior as well...

flying a plane "scale like" is not important to me, with that said I have a choice of two engines for mine, a Saito 1.20 or an Os .91 FS. To those who are flying the arf which would be the best choice?

About the best I cas say is to look at the video in my review of this plane. It is flying with an OS 91 that is not yet broken in fully. If you want to go ballistic, use the 120

Hello gnirwin. I have a Saito 125 in my Skybolt and it flies great. I usually fly at half throttle just for fun. However, it is nice to go across the sky full throttle every so often to hear the reaction of the guys in the pits. If you have a 120.......wear it!

How many color schemes does it come in?

Gibbs

If you have the choice to go ballistic or not go ballistic...Go Ballistic!

YS 110, ran mine on the test stand this past weekend. Where's it goin'? In my Skybolt ARF of course!!!

one

But it's a nice one!

Minnflyer- Should I use a particular fuel tank in my Super Skybolt or do anything special in regard to the pressure my YS 110 maintains in the tank? There is a product out there now that is basically "shrink wrap on a roll". It's kinda like electrical tape but without the adhesive, is pretty thin (read light weight) and seems to bond to itself. I thought by wrapping the tank it might help the tank live a little longer.....Am I over-reacting to the possibility of a tank failure due the pressure? Also, a round tank is proper for a pressure vessel, a retangular shape is not......Your thoughts?

Also, I like the idea of inverted mounting the YS 110 in my Super Skybolt arf. How 'bout you? How was the YS hung on your old Skybolt? Horizontal, 45 degrees down or inverted? Inverted will make lateral balance a non-issue. I have not done any measuring on the cowl yet. Thanks.

You don't need to do anything special to the tank for a YS engine. The pressure is considerably more that other 4-strokes, but not so much that you need to worry about it. On nice thing about a YS is that you can mount the tank back a bit to get it over the CG. In my original KIT Skybolt, I had the Smoke oil tank where the Fuel tank should be and the fuel tank behind it (Which places it at the CG). I'm hoping to modify my ARF to this configuration this winter.

As to mounting... I almost always use a horizontal mount. There are 3 reasons why I hate to mount an engine inverted:

1) Sometimes they don't run right inverted

2) It makes getting the Glow Igniter dificult to get on and off

3) If you have a nose-over with an inverted engine, your engine is what gets the most punishment.

None of these three things are major, but combine all three and I just find it much easier to mount it horizontal - As far as lateral balance goes, you'll need to balance it laterally anyway - Maybe they used more glue on one wing, or heavier wood - So as long as you have to do it anyway, why worry about the position of the engine?

On board glow driver solves that or remote glow plug igniter

True, it also complicates something that doesn't need to be complicated. So #2 could be changed to:

It makes getting the Glow Igniter dificult to get on and off unless you want to go through the hassel of adding a remote glow igniter

I like to keep thing simple - The less you have, the less that can go wrong

To each his own of course, but I do not find it a hassle nor complicated to hook up a simple remote glow igniter. It is more complex to put in an on-board glow driver, but works extremely well.

Thanks Minnflyer. Your points are all valid and I appreciate your idea on the tank locations. I'll stick to horizontal as planned. 'Preciate it! Damifino

Im interested to know if this motor would work also...

If not, does anyone know a good sport scale aerobatic that would take a small gasser like the G20?

Although the G20 is marketed as a possible replacement for 60 size planes, it is really too heavy at 43oz for most 60 size planes. There was one person that did a H9 Hellcat with one, but that also isn't an aerobatic type. If I remember right, the G20 produces about 1.7 HP, which is less then a comparable 1.00 glow motor(saito 1.00 makes 1.8HP). If you want to sue this motor, a 90 size plane would be better bet.

I put a G-20 in an H-9 Hellcat and yes, it was way more than it needed.

It would be interesting to see how it would work in a Skybolt. You would need to add tailweight to compensate, and it would increase the wing loading, but the Skybolt can easily handle a heavy wing loading - I had a YS 91 with a smoker in mine, so I know it would handle the weight.

Mike, would you kindly measured the skybolt firewall L x W if its fit the G20, I know the carb or muffler may protrude, thats ok. I think the cowl should be long enough, right?

Do you have any other airplane suggestions (sport scale aerobat) for the G20ei then? I really want to get into gas (for all the obvious reasons), but dont want to break the bank either... I also need to fit the plane in a jeep wrangler...

I am interesting in the super skybolt. Unfortunately I got a problem with my OS91 fs, because the muffler keeps vibrating off from the header. Can someone show me how you guys keep the silencer firms with the header.

Thanks

Magna, the cowl is 6" wide x 5" high x 6" deep

It seems like it's plenty big enough to fit the G-20

Edd, have you tried (Blue) Loc-Tite? If that doesn't work, I have wrapped copper wire around mufflers to keep them from spinning too.

Do you already own the G20? If so...here's a few ideas and they would fit the G20 just fine.
http://ak-models.com/mm5/merchant.mv...=CMPAerobatics


This one is a 120-140 size plane. The G20 would fit here as well, but you might want a little more power then 1.7HP that the G20 gives. Maybe a G26 or G38
http://ak-models.com/mm5/merchant.mv...=CMPAerobatics

This one needs a 40cc motor, so if you bumped up to this size...you can get an 80" plane for only 289
http://ak-models.com/mm5/merchant.mv...=CMPAerobatics

MINNFLYER- Making progress on my YS 110 powered Skybolt ARF. Have done some mods and will post some pics soon.

Cool! I am in the process of upgrading mine to the YS 91 I had in my original Skybolt (Kit) With the ARF being about 2# lighter, it should be quite a show!

I'm going to add smoke too.

That is... IF I can ever get around to doing all of my other winter projects!