Rudolph Hart

Hi mate hope chrissy and the new year are good to you.Making some proper oleo legs for the mew gull early next year,the standard ones are borderline.It sure sounds nice with the big 220 up front.

Edit/ this was in reply to a question from 'the pope' which went 'poof' and disappeared.

Ernie Misner

I fly at 2 different fields where there is a change in elevation. I find that for perfection on the low speed needle it can take a small tweak between the two fields. Otherwise it would be set it and forget it situation with my 82.Does the turbo muffler still make good tank pressure if there is no baffle in the muffler? Thanks and Happy New Year to all the Saito gang!

Rudolph Hart

Ernie i'd like to hear other user opinions too,it would be interesting.As far as mine go,i run a turboheader on one of my 82's which is in a 46 size decathlon.I also run a turboheader muffler on a saito fa220 which is in a mew gull.I've never noticed any difference re fuel feed or lack of,works fine.From memory the muffler on the 82 definitly has a baffle but the larger muffler for the 220 does not.Makes a nice deep bark too.

bob62

My Feedback: (28)

I run the new muffler on a 150 that the baffle came loose. It seems to run the same as the one with the baffle

smkrcflyer

I just replaced the bearings on my 90T (old version). Is there a way to check if I have the timing set correctly between the left and right cylinders? I'm not sure the valves are opening and closing at the correct time.

SrTelemaster150

You should be able to use the same procecure as the 100T. http://www.horizonhobby.com/pdf/SAIT...oke_Manual.pdf

smkrcflyer

In this procedure the engine needs to be taken apart. I was trying not to do that.

SrTelemaster150

Let me think about this.

I'm sure that it can be done W/O dismantling the engine.

Is this the 90T or 90TS?

smkrcflyer

Its the 90T. I should be able to check the valve operation when compared to the piston location and to each cylinder. Are the two cylinders 180 deg out of cycle?

SrTelemaster150

Yes, they are 180° firing order. The left cylinder (viewed from the front) will have the same timing marks as a single & it is timed by placing the dot on the cam gear @ the 6:00 position. (or 3:00 viewed from the front)

Rotate the crank 180° & set the other cam W/the line @ 6:00. (9:00 viewed from the front)

The trick is to accurately measure TDC. I would use a piston stop & a 360° degree wheel. If you only have a 180° degree wheel, set the left cylinder @ 90° on the left extreme, then rotate 180° to 90° @ the right extreme.

smkrcflyer

Thank you this is good information.

SrTelemaster150

The reason why the twins have different cams/marks is that the right cylinder runs "backwaerds" as far as the cam lobes. The intake & exhaust ports are reversed on the cylinder so the cam lobes are switched front/rear basically making for a "reverse" cam. They say the the "reverse" twin cam can be used to make a counter-rotating single. If tht is the case then the cams on the twins could be swapped side/side to make a counter-rotating twin.

triumphman49

My Feedback: (149)

Happy New Year to all the Saito fans here, Thought I might mention, think it's the FA90TS that has the offset cylinders, . . . i.e., the 180 degree firing order.

T-man49 in Al
Saito #723

rc lifer

Can you actually wear a Saito engine out. I have seen lots of abused Saitos and crashed Saitos but never a worn out Saito. Thats a Testimony to the design and excellence of the manufacturing. That is just my experience, but what have you seen?
Lately I have been running a .40a in a plane called an Attack 20 from World Models,a 49" shoulder wing sport flyer. I have an APC 12.75 by 3.75 prop hung on it and it pulls the 3.7 lb airframe quite well. Anybody else flying the 40a? What props have you tried? I am not interested in going fast, thank you. I run 20 or 30% Cool Power, usually 30.

nute12

My Feedback: (14)

i wore a .91 out, took me 4 seasons of hard flying to do it tho. finally just run out of compression, and i could not start it. sold it to a buddy for a half rack of beer and help( he had to help drink it) and he put a new ring and bearings in it. its 9 years old now and still runs great.

Jim Branaum

My Feedback: (3)

I did that to a .50 and a .56, but *I* did the work and still have the engines....just cheap I guess

nute12

My Feedback: (14)

i switched over to giants.........saito's were just sittin anyhow.

FNQFLYER

Yes 've seen "worn out Saitos, mostly 50's and 65's in competition use. They are so good a bearing and ring change (as applicable) is all that is usually required to bring them back. Though I once got a bore flash hard chromed as an experiment, good idea but not really necessary.
Now mySaito activities are at a halt, the 40 degree C temperatures with 70+ humidity are playing havoc with performance figures. So aircond and internet trolling is the activity of choice at this time

nute12

My Feedback: (14)

precisely wy i went to electric up to 1.2 ci planes and gas over. cost and availability of glow fuel had some bearing on my switch. I love the saitos..........i hate the slime and fuel acquisition

FNQFLYER

Gee I am glad I live in OZ, fuel costs aren't as bad as elsewhere (for model a/c i/c engines that is) the only problem that I have really is with crappy nitro. I occassionally get access to the drag racing fraternity suppliers and when I can I as much nitro as the bank a/c will stand otherwise if I have to use the chinese source I freeze the nitro before I mix it.

Jim Branaum

My Feedback: (3)

Is that to get the water out?

Rudolph Hart

Bob do you mean you ran the same needle settings?

Rudolph Hart

Nup..it's to cool his beer

Rudolph Hart

Dave hav'nt heard from you for a while on here hope you arn't suffering to bad from an attack of unappreciative youngsters.What do you think the practical limits of nitro percentages vs performance benefits are,in any saito engine you like.I ask because i'm in an unusual position re power.I've tried up to 40% in a 62 a long while back but never wrote any figures down.Anybodys thoughts??

RC Specialties

Happy New Year everybody!