dick Hanson:
Can you post some pic of your design plane? thanks

Whatever it is, you can bet it will be good!



I agree and disagree with you Dick on that one. I think the RCS 1.4 has a bit more power than a 1.20 4 stroke, but not as much as a 1.20 2 stroke. The review plane I am doing this month had a Saito 1.2 on it and although it flew well, it did not perform as well as the RCS did. Also, the APC 16 x 8 is a good prop, but very heavy. Nice if you want to maintain a good idle, but not as good for quick response as a 17 x 7 or 18 x 6. I have a MentzS 18 x 6 on my FW3D with the 1.4 and the throttle response is a ton better than the APC 16 x 8 that I had. Plus, the plane hovers at a little less than half throttle, where the APC was more like 1/2 to 3/4.


I wil try to get some numbers with the pitts muffler that I am running with the MentzS prop. The enine is not broken in yet and is still spitting some black dots.

pequeajim


were r u posting your review? how much did you kit come in at? how much of a wt difference was there with the glow job?

I was not thinking about hover recovery etc---
If that were to be the case - I would of course use a load prop which allowed faster response.
For the "3D" stuff - I think I would opt for something in the 7-8 lb range maybe 1000 squares - nonscale flippity flop design.
different criteria -
would be fun tho --

dick let us know when u design a plane around this rcs motor it would be a Big Hit!!!! Partner

So the RCS 140 gas engine would be a good choice for a 120 size airplane? Will the RCS 140 gas engine work with a Lanier Edge 540 T 120 size?
Anywho, It looks like it's gonna be a while until I can save enough money to buy me a gas airplane.
How much is the whole set up going to cost do you think if I were to buy a RCS 140 with the Lanier edge 120, maybe around $900 you think or is it going to cost more?
Thanks for info guys and keep em flying!!!!!

I think DH is correct in that you only want to put the 1.4 in a plane that has an AUW of 10 lbs or less. For instance, putting the 1.4 in a Lanier Edge would power the plane fine for general flying, but it would not do any kind of 3D.

I ended up putting a MVVS 1.6 in my H9 Cap and it will hover, barely. It flys great, but is in no way a 3D monster. The ZDZ 40 is better for that if you have to go gas.

So if I were to go gas, the ZDZ 40 would be a good choice for a small gas engine. But what size plane would it fit and do 3D with? The ZDZ 40 is like a 2.4 size. I really don't want to go giant scale considering how much it will cost.

For ARF's bump it up to a ZDZ50 ($25 more) and look at the GP Patty Wagstaff Extra...

If you like to build, then consider the 24% CA Models Extra 300L...

Foam is already sheeted and you can really build this one fairly quickly I'd think... great price too!

Click here CA Models 25% Extra at Planes Plus

Vuaim,

I believe your original inquiry was based on the cost of Glow fuel eating you up. I have just read all this thread, and can make the following observations:

1. To reduce your cost, a 1/2A plane can be VERY aerobatic and fast, with a .15 size engine, and fly for a month on a gallon of fuel. A .15 size plane with a .25 can fly on 10%, do the same things, and fly two or 3 weeks on a gallon. Plus the planes are not expensive.

2. Glow fuel has half the energy per unit volume of gasoline. Glow fuel requires 1/4 the volume of air to burn, so you can get (roughly) twice the power out of a .46 glow engine as a .46 gas engine. When it is pointed out that you need to carry a spark ignition system with that .46 gas engine, the cost benefits are outweighed... (pun intended.)

3. Gas engines with spark ignition start to become good for aerobatic flying at about the 50CC (3 cubic inch) size, or maybe a bit smaller. Aerobatic planes for these engines are larger than your sixty size, or even your 1.20 size planes. If cost is your main concern, you might want to downsize and stick with glow. If aerobatics is your main concern, you can get terriffic engines in the .60 to 1.20 size, with glow - but your fuel costs are increased over your .40 glow plane.

I see lots of encouragement for you to go with the large gas plane, and I endorse that - if you have the cash. If not, maybe a small aerobatic glow (or electric) plane is what would really solve your cash concerns.

Good luck!
Dave Olson