acdii

The original 5.0 in the 79 LTD had piston slap. Even replacing the pistons and honing the cylinders couldn't fix it. Apparently when the block warmed up the cylinders distorted, and caused the slap. It eventually went BOOM one day driving up my street to the house. 25 MPH and CLANGCLANGCLANGCLANG. Bought a JY engine and had it bored .030, new pistons, honed to fit, manually gapped the rings in each cylinder, had the decks milled, the cam and crank line bored, and that was the beginning of the blue printing. It also only got Castrol GT oil.

What I would like to do if I ever had $30K burning a hole would be to build a Factory Five Coupe with a Coyote in it. It would be one saweet ride. Aint no Saito gonna power it though.

the Wasp

My Feedback: (1)

so here is where I am at with the Mustang, I have 3 engines I can use and each engine gives me a different problem I have to get around, what engine would you go with ?

Saito 100 Single)
if I mount it upside down the engine will be troublesome to start and prone to miss fire or flame out, the head will stick out the bottom of the cowl a good 20mms or more, << that's OK with me, the engine will stay cool, and I will not have to cut the cowl much for the exhaust pipe,,, for this setup it would be best to buy an on-board glow igniter to keep the plug glowing..
I can mount the Saito on it's side, but here I would have to cut up the side of the cowl much like Pete (Rudolph) did on his Mustang, but I would have to cut out more than Pete did, maybe even just cut out a big hole for the head to stick out, ,
ether way (upside down or on it's side) I will have to mount the exhaust pipe to the engine after the cowl has been mounted to the fuselage, and will be a problem..


OS 70sz 2St Heli engine) (note the stock Heli Head is rectangle, BUT I have turned down the head on the Lathe, so now the head is round like the average 2St plane engine)
here if I mount the engine upside down this engine will still run well because I have an OS Heli Regulator mounted on it's Main Needle, and the tank will be pressurized from the engine's crank case and there will be a one way valve on the pressure line to the tank.. I will have to cut a hole in the bottom of the cowl and the head will stick out only about 5mms, I would have to cut out some of the cowl for the Stock OS 61 Muffler, I would have to cut 2 small holes on the side of the cowl to mount the muffler once the cowl is mounted to the fuselage, and I may have to buy an exhaust extension, the muffler will point down the side of the fuselage above the top of wing..
the engine would fit well in the cowl if mounted on it's side, BUT I can not mount it on it's side, because no mater what muffler I use I would have to cut up the cowl much more than wanted !

K&B 100 2 St)
to mount this engine vertically upright or upside down the holes in the Mustang's Engine Wall are almost a perfect fit, each hole in the engine wall needs to be elongated 1/2mm both vertically and horizontally to the outside, keep in mind the muffler is also the engine mount (see link), of course the Blind Nuts need to be pushed out and re installed, and the holes should have a bit of filler in-placed for keeping the blind nut reinforce.. if I mount the engine upside down I need to cut a hole in the bottom of the cowl for the head to stick threw 4 or 5mms, and I will have to move the muffler's exhaust stinger, this will include removing the stinger/ welding up the holes (s), drilling a new hole and installing a new stinger..
NOW, if I mount the K&B upright, it will be easy to mount, and just a hole on the side of the cowl for the stock exhaust stinger, but I will have to cut a hole on the top of the cowl, and the head will stick out/up a good 2.2 inches. <crazy


Jim
see the K&B,,

Rudolph Hart

I should say that even tho grain is involved beers are good carbs too

This is the extent of my mechanical knowledge

the Wasp

My Feedback: (1)

well then I guess you will never own an engine like that LOL

Rudolph Hart

Jim did you have a sister like this too?


Jim i like scale sounds so i'll restrict my comments to the saito fa100 you are thinking about for the midget mustang.There is no problem,mount it sideways as i've done with the fa115 in mine see pic back a few posts.

Jesse Open

Being a 4 stroke person, the Saito would be the only option of the three. Watch the tank height as that seems often to be a contributing factor to any difficulty from the vertical install. I usually wind up mounting Saitos at 45 degrees ,with the exhaust popping out near the fuse center. It also usually places the tanl centerline close to where it is needed.
I have a pair of "chopsticks" that I made for re-bending the exhaust pipe. They are 1 foot long bars with female threaded ends. I screw one on to each end of the pipe, heat the area where the reshaping is needed to orange od red hot and carefully re-tweek. I'll try to post a few pics if I get a chance tonight. If you need them I can send you a pair.

Hobbsy

My Feedback: (102)

Jim, that K&B 100 muffler has long, wide baffles in the muffler that weave back and forth and when one it's side they create deep boxes that will fill with lube oil. You might want to grind notches in what will become the bottom end of the baffles so the oil won't get trapped.

Jesse Open

Jim, I forgot to tell you to check your PMs. I left the tracking number for your Saito FA-100 .
BTW, Should you need any welding done on that K&B muffler, just let me know. No problem reworking the outlet tube or even repairing holes that you regret having there

Captcrunch44

Jesse Open

Me too!

blw

My Feedback: (3)

Hi Capt, yep, been there too, but not so much with frustration. My dad painted a lot, so I was cheap labor for chipping off paint, sanding, and general grunt work. Yes, we did chip off paint and I hated every minute of it. My dad finally opened a speed shop in Florida, but it failed because he was an uber perfectionist and he lost money left and right because of that. He never accepted the "time is money" business concept, so he tinkered rather than repair and replace with another customer. Sort of sad to hear about, but it was inevitable. I was in the service and not around to see him loose the business. After that, he owned a bar.

BTW, the YS talk is almost as bad as OS stuff. This is a Saito forum. Let's deviate back more to just Saitos, ok? Oh, and another thing that must be said: YS's are not as easy to tune and stay tuned as any Saito as far as I've seen. I have Saitos that have flown for years without touching a needle. And, no fuel system cleaning, etc every year. A properly tuned and broken in Saito just needs glow fuel (preferably with castor}, 3 vdc to crank, and go fly. (this wasn't aimed at you Captain but is a side rant)

Captcrunch44

Jesse Open

Just one comment since you asked we drop the YS and for some reason followed up with your negative opinion on YS tuning.
I have been flying both YS and Saito since the late 1970s and early 1980s. Contrary to what many seem to think my experience has been, the YS is quite stable and with its excellent regulated fuel system very easily stays in tune for extended periods. While I do take the fuel system apart for over-wintering, once set up in the spring I doubt they require any more tinkering than an average Saito. If indeed they were troublesome, I would be one of the last to accept them. The YS .91AC is a real workhorse that is easy to start and has abboutthe best idle and transition of any 4 stroke I have used in that range of sizes. Of course, the power is hard to match as well.

I love mySaitos too.

FlyerInOKC

My Feedback: (6)

There is nothing wrong with YS they are a well built engine. Its just for some of us they seem to be more touchy in the adjustment department and not as easy as Saito to start. This could be a user issue and not an engine issue but I think we do have a tendency to stay with what works for us.

the Wasp

My Feedback: (1)

I knew all you guys would pick the Saito LOL,,, LOL I guess you guys could not set your bias aside LOL

Pete, that sure is a funny video LOL.. I had 3 older brothers, only one was worth anything, boy the stories I could tell you.. I have seen your photos of your plane, but can you take one more and post it, please buddy, to show me how your exhaust exits the cowl, that would be very helpful !

Dave, my K&B came with the baffles removed, it also came with a one peace head, I have got to find a plane that it will fit in !!

blw) I blew it badly, I had the chance to buy a never started YS 91 for only $230, the price sat on it for about 1 year,, and I think I could have got the seller to pay the shipping,, I passed on it and now I regret it, it was my bast chance to date to actually own an engine with a blower on it, and I passed on it

Jim
where you been, what you been doing, who you been doing it with, maybe you better not tell

Rudolph Hart

Jim gary is giving you good advice see pic here of my fa82 and how it sits in the decathlon.Straight exhaust is a pipe off my fa200r3 or the fa182td can't remember.

Rudolph Hart

Nice clean topside.Don't run too bigger pitch prop if you want to keep an eye on it in flight.


Refuelling valve at rear of mesh section.The fa115 is a tight fit but well cooled.


Circle at top left is where the exhaust header does not quite fit in the cowl.Look close and you can see the main needle extension and an old tuning ref marked with texture.Flexi exhaust and silicone 40mm long extension clears the cowl nicely.Glow stick point to the left.


Ok here's some close up pics of how the fa115 is mounted in my cmpro midget mustang.As i keep saying,your midget is bigger so you'll have more room to fit the fa100 in the cowl.Easy peasy.

Rudolph Hart

If you take dave's advice and fit a fa100t flip it upside down like this pic of my h9 taylorcraft with fa182td.Flexi exhausts are good.

the Wasp

My Feedback: (1)

Pete, thanks for the extra photos , I just found I have a engine mount that is drilled for the OS 61, so I can now mount my Saito to the Mustang and see just how it fits,, I will reply later or tomorrow, maybe I will put the K&B in my P-40,,, if it fits LOL

thanks !!

Jim
there are some really good people on RCU

Rudolph Hart

I use this pic to try and describe what you feel like mentally at times while flying a midget that's well tuned.


Glad it helped,don't get me confused with the nice people here i'm a rude old fart and don't you fergit it! what's the AUW for your midget? mine flys at 4.5kgs so it's heavily loaded and easy to fly no matter how windy it gets.One of the advantages of having that much power for it's size and shape is that it really is faster than an emu! ever seen a bunch of emu's outrunning the artillery? they can really giddyup when they have to.It likes to boom and zoom.

ps barry i hope your dad's bar had a better class of patron than is common here and especially in nz.

Hobbsy

My Feedback: (102)

Pete, it looks like the high speed slip stream wore some of the paint off of that plane, it must be the 115

I haven't heard from the NZ guy concerning the plans for the PA 36

Jesse Open

Here is an in the cowl pic of a 45 degree mounted FA-82 in my Toledo Spl. Note the centered muffler. The muffler is a modified YS salvaged magnesium casting with an oversize, machined from bar aluminum tail. The inlet had been broken by a friend in a crash so I welded it up and re-drilled at a new angle.

I had the same plane (If that is a Seagull) with a YS.63.
In that one, I went 90 degrees because that valve cover was about all that went outside the cowl. Made for a very clean installation.
I used a home-made pair of elbows and managed to get the muffler on center, out the bottom.
Gobs of power and a nice flying plane.

the Wasp

My Feedback: (1)

Pete, the only info I have is

Wing Span.......... 59.5 inches/ 1510mm,
Wing Area.......... 667 sq in/ 43.0 sq dm,
Flying Weight.... 7.5 lbs/ 3400 G

Jim
if you don't do it some one else will

the Wasp

My Feedback: (1)

thanks for the good info, cause I sure don't want no powderpuff

Jim
my Cat like's cheeze

the Wasp

My Feedback: (1)

I didn't get to mount the Saito to the Mustang today,

Jim
I don't mind when she sends money or brings her girlfriends with her, but the wife wont let her in