Michaelh

My Feedback: (4)

Saito for 3D yes! Would Id rather you put an .82 in that plane Yes! strap a 14x4w on 15% you'll have a great little performer. Some are running a 15x4W on it!

The .72 will work good for it though seen reports of 9500 on the 14x4w .

Maybe someone with 3d experience with the .72 can chime in on that one

I love the .82a though. Sips the fuel and flies my 58" 5lb 6oz Extra around with no problem. Same size as the .72 Im telling you I can fly forever on a 300cc tank. Even with 30%
Break in is no different as far as I see.

Ill have a couple more .82's before the flying season is over. Power to weight, fuel consumption and dependable. Cant be beat.

Mike,

ILv2Xlr8

Thanks for the advice! An 82 sounds big to me for the wing loading on this aircraft, but I guess you can't have too much power for 3D. I did a comparison, and the 72 and 82 engines are listed at the same 16oz weight, so might as well go with the 82.

I am still curious what size wide 3D prop could you spin on a [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=SAIE056GK]Saito 56[/link] or a [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=SAIE072GK]Saito 72[/link]? I have these engines on other aircraft, and wanted to know what 3D props you recommend?

Michaelh

My Feedback: (4)

Yeah its the same so might as well ehh. I also posted to the BEC thread. Ive done much of the lightweight hunting already for my plane. You can cut that RX pack down to 1200 2s Lipoly also. Think they are like 2.3-2.6 ounces if you can find the older Ecotec packs.

Have Fun !
Mike

AJsToyz

I have a 72 on a Nitro Models Yak with an APC 14x4W prop , it gets 9450 with 10% and will run 9700 rpms with 20/20 and that is on the rich side ! The plane ways in @ 6 lbs 1 oz .

Andy

jb86

My Feedback: (8)

the miracle switch (regulated switch) from MPI (6v version) plus a 2s lipo around 1000mah will easily save a couple of ounces. you have to use a regulator of some type w/a lipo. the rx doesn't want anymore than 6v, not 6.1 or 6.2v, ect. the 5cell nicad/nimh runs well over 6v when charged, not good for the rx. the miracle switch has a safety that if something goes wrong w/the switch, it just stays on, instead of loosing contact and connection.

bzizzi

I recently purchased a Saito 91s and am going to put it on this plane,will it be enough ????
http://www.horizonhobby.com/Products...ProdID=SEA5050

jb86

My Feedback: (8)

it's minimum for a 10lb a/c. i had an edge 540 @ 7lb w/os 91FS pumped w/apc 14x6 @ 10k. flew great but not unlimited vertical. saito 1.00 w/14x8 would probably been perfect. they give a range of engines, if you can go to the highest, you can always throttle back. @ 10lbs, it needs more muscle to do any good aerobatics. the bipe has lots of lift, it will climb, but for vertical you need power. the 1.25 w/16x6 or 15x8 (if you need ground clearance). or ys fz 1.10-s if you can, that would definitely be hot.

EdgewordMI

Several questions. Does any Admin. have an actual list of Club Saito numbers?? I had one once..... Can anyone say what their Saito 72 idle screw is set at and what it tachs @?? I run Wildcat 15% and 18% syn., I had to readjust linkage and fouled up the idle setting and didn't write down...[:@]
Thanks guys

w8ye

My Feedback: (16)

On the Saito 72 the idle screw usually adjusts close to being .040" below the surface of the throttle arm.

The engine will generally idle better with a plastic prop.

The needle valves are made adjustable so they can be positioned for the best compromise between idle and acceleration.

ILv2Xlr8

Thanks for the tip. Where do you get the MPI switches?

Most of the spektrum [link=http://www.spektrumrc.com/Products/TechnicalSpecs.aspx?ProdID=SPM6070]receivers[/link] can take up to 9.6v.

Michaelh

My Feedback: (4)

So does the RX knock the voltage down for the servo's?

ILv2Xlr8

Not sure if the RX regulates the voltage for the servos. The website tech info does not give enough detail. I may email them to find out. The regulator switch is only 1.6oz, so it may be worth it to be safe.

salerno

I have an .82 GK, i seem to be having a problem with tuning. when i try to richen mixture it dsen't go fat. It is also getting max rpm at about half trottle. when i open to full throttle, it doesnt gain rpm. it is running lean but i can unscrew needle valve all the way and it wont get fat! have checked all fuel lines and clunk, all good with no blocks. low end runs ok. maybe tank is to far from engine, is this a case for a perry pump?

vince.b

My Feedback: (1)

if it will not go rich there is something in the needle or the carb .... like dirt or something

salerno

well i unscrewed needle valve to clean it and it looks clean, is there a way to clean inside carby?

salerno

This would also have nothing to do with tappet adjustment would it? checked them very recently anyhow! also tried another tank and the problem was still there. what happens when your tank is to far? what are the symptoms of that?

Hobbsy

My Feedback: (102)

If the HS needle won't go rich, the LS needle is set too lean.

salerno

Thanks guys, i will check out ls needle. i am still wondering why people decied to add a pump exactly? this is my first 4 stoke, have been around two stroke for years, but seem to be struggling with 4 stroke! i'll learn! if engine is running good why add pump? how do you detirmine if you need a pump? i have a fliton extra 330 freestyle that saito is in, i notice that most of them use a pump. engine is inverted.

Michaelh

My Feedback: (4)

How bout the shotty intake manifold on these .82's maybe air leakage? I sealed mine up with silicone and the blasted thing seems to run even better . Could just be me though, and is just a thought of something to check for.

Dont mean to call it shotty but it is less then desirable. Seems the vibes wear things a little over time.

I rebuilt the carb on my 180 and the side to side play is non existant now. The only problem is the spring will not work with it. If the spring is installed the barrell will not fully close.
Is there an upgrade spring or something? I wouldnt worry about it but I know the play is going to come back down the road.

vince.b

My Feedback: (1)

saito 220
well i have almost 3 gallons on it and its a very sweet running engine.
I havent really needled the low end but it ticking over about 1800 very nicely.
the engine likes a very wet prime and 99% of the time it starts on the first back flip by hand.
cruseing around at 3/4 throttle (pretty much wot) with a 17.5x12 I ran out of fuel at 15 minites on the timer with a 22oz tank.
something I really didnt want to do on a fresh engine.
If i had to guess the fuel consumption is at least 20% more on 30% then is was on 15%.
but the ease of tuneing on 30% wins hands down not to mention the idle and smooth power.
only bummer is I hit a marker post and did enough damage that I had to order some new parts for my sundowner

salerno

is there anyone that can shed some light on the pump situation?

Michaelh

My Feedback: (4)

The simplest way is to regulate. The vp-20 is good but a regulator is plug in and forgett about it. I dont know how to describe it but the regulator is just a cleaner install IMO

A friend has a Fliton Extra with the .91 in it he doesnt use a pump or regulator. Ive flown it and did not NOTICE any leaning in hover. You need to check on this with your plane. I think the reason there doing it was the stock location of the tank was higher then the carb. My friend moded his and dropped the tank down low. It weakens the LG brace when you do this. If you are worried about that and dont want to butcher the plane up just throw a regulator on .

Im thinking the Cline is lighter then the Iron Bay. I only have the Iron Bay but the Cline looks lighter. If thats any issue . I put my smaller stuff on a diet always

salerno

Thanks, now i understand why there are alot of people using regulators! maybe it is my low end to lean!

linkadrip

Well i'm back to ask anothe4r dumB question.. Maybe not real dumb i looked at the recomended Size props for my Saito .72 engine. I have been using a 12X8 on it for a long time. But i'm wanting to get more power out of the engine or speed i guess. and was wondering what props would be good to acheive the result. i can't go up to 13 inch props cause i dont have the ground clearance. I guess i could make the trainer a Tail dragger to get more clearance but i like it the way it is. just wanted to get More get up and go i guess and speed. out of the engine. I put an apc 12X10 on it and it seems to be to much for the engine and doesnt make it go faster. So i'm thinking about the 11X9 Apc which is a recomended prop. But i',m wondering if a 12X5 would be to small. and the engine would over rev since the pitch isn't in the recomended props for the enigine. i have a 13X5 on my other saito .62 and it seems to be perfect in power and thrust but its a real light biplane.. And i'm just trying to get a little more get up and go out of the trainer..

Well any thought on it would be nice to hear.

Hobbsy

My Feedback: (102)

Sal, a couple of words about "pumps", the Cline and the IronBay are the best solution if needed. The Perry's will not cure your high tank situation, fuel flows freely through them, no matter which one. The IB and Cline will work no matter what and you'll be rewarded with a consistent engine run from full tank to empty. Plus, you can improve your fuel economy because you no longer need to set the mixture extra rich to ensure against a lean run near the end of the tank. You do still have to set mixture a little rich of peak for safe lube and cooloing considerations. WHen settinh up either the Cline or the IronBay, set it up with the tank in the ideal position, that way the adjustments won't change when you put engine in the plane. Just a few heads up that will save you some headaches.