RE: Welcome to Club SAITO !  
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RE: Welcome to Club SAITO ! - 4/21/2008 10:02:36 PM   
Capt Lou


 

Posts: 247
Joined: 1/3/2007
From: Manahawkin, NJ, USA
Status: offline 		It sure looks like the one I put on my .91 and 100 Saitos. You must put an O-Ring or seal between the base of the velocity stack and the carb, otherwise, the space will allow air to enter the carb without going thru the stack.

(in reply to JustErik)
       Post #: 10451

RE: Welcome to Club SAITO ! - 4/21/2008 11:32:56 PM   
Mr48Volts


 

Posts: 11
Joined: 10/16/2007
From: Canberra, AUSTRALIA
Status: offline 		I have a new 1.25 Saito , running 15% nitro fully synthetic no castor blend and with a 3 blade MAS 15x7, a MAS 16x6 2 blade and an APC 15x8 I'm only getting between 6500 and 7100 rpm , the engine has only been bench run at present and has had 2 litres max fuel through it...

Do you experienced Saito guys think it will bed in and give a higher redaing with more fuel through it???

It's going into a 1/7 World Models P47D when ready.

It seems from the manual I'm down 1500-2000rpm???

Thoughts anyone?

Cheers

Scotty

(in reply to Capt Lou)
       Post #: 10452

RE: Welcome to Club SAITO ! - 4/21/2008 11:41:06 PM   
Hobbsy



Posts: 10426
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		Yep http://www.horizonhobby.com/Products/Default.aspx?ProdID=SAI50GK93

_____________________________

"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to JustErik)
       Post #: 10453

RE: Welcome to Club SAITO ! - 4/21/2008 11:44:30 PM   
Jimmy Hoffa



Posts: 456
Joined: 1/12/2005
From: Orlando, FL, USA
Status: offline 		Is it normal for the high speed needle to only be 1 1/4 turns out on a Saito 1.00? A friend just bought a new one and after break-in (1 gallon) and without adjusting the LS this is the peak minus 300 rpms. The motor runs strong and transitions from idle to full power instantly and with no hesitation. My Saito 82's are usually 2 to 2.5 turns out on the HS.
Phillip

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Club Saito Member #415

(in reply to Mr48Volts)
       Post #: 10454

RE: Welcome to Club SAITO ! - 4/21/2008 11:57:36 PM   
Hobbsy



Posts: 10426
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		Phillip, there is no standard number of turns, the only determining factors is where it runs the best. Make sure you have the HS at absolute peak when you set the LS needle, the needles effect each other but the HS needle seat is fixed so it needs to be set first.

_____________________________

"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to Jimmy Hoffa)
       Post #: 10455

RE: Welcome to Club SAITO ! - 4/22/2008 12:11:09 AM   
speed lover


 

Posts: 126
Joined: 5/29/2006
From: , UNITED KINGDOM
Status: offline 		Thanks for the welcome BLW can anyone help with advising me on running this engine further. I don’t want to over rev or over heat it. This is my first 4 stroke and any knowledge or help with this would be great. What sort of RPM is expected also how do you know when to start leaning out and how far. All my other engines are 2 stroke and I use the pinch test but I don’t think this will work please help.

(in reply to blw)
       Post #: 10456

RE: Welcome to Club SAITO ! - 4/22/2008 12:38:54 AM   
Hobbsy



Posts: 10426
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		SL, you went way overboard on the 4,000 rpm thing, that is only for 10 minutes. A Graupner 12x6 would be perfect and should turn about 9,500 to 9,800 on 10% nitro. 5% and under castor will be fine.
My method is
4,000 rpm for 10 minutes
5,000 for 10 minutes
6,000 for 10 minutes
6,500 for 10 minutes all rich enough to miss or cough a little once every few seconds but not so rich as to require full time glow power.
Peak HS to max rpm then procede to lean the LS needle 1/8th turn at a time checking the transition and top rpm after every other change. At some point it will quit on the transition, go rich 18th to 1/4 turn on the LS needle, richen HS needle 200 to 300 rpm downward and go fly. Your engine will change very little from here on out. Check valve lash and lube rockers after break in.

< Message edited by Hobbsy -- 4/22/2008 12:39:24 AM >

_____________________________

"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to speed lover)
       Post #: 10457

RE: Welcome to Club SAITO ! - 4/22/2008 12:45:08 AM   
otrcman


 

Posts: 89
Joined: 10/11/2004
From: Arroyo Grande, CA, USA
Status: offline 		There are no doubt lots of people who are more qualified to advise you, but it has been my experience that setting a four-stroke by ear doesn't work very well. For initial set-up of a new or unknown engine, using a tachometer will give more consistent results. For instance, I found on my FA-45 that when new a reliable setting could be attained by leaning to peak, then backing down by 400-500 RPM. As the engine broke in more fully, I was able to set it to about 200 RPM rich of peak and still get reliable running. If leaned too much when still new, then engine tended to quit in flight after a few minutes.

And yes, the engines seem to improve with run time. Perhaps 5 to 10 hours before they are fully broken in to where they are tolerant of over-leaning. At least that's been my experience both on my engines and in observing others.

Dick

(in reply to speed lover)
       Post #: 10458

RE: Welcome to Club SAITO ! - 4/22/2008 12:59:01 AM   
speed lover


 

Posts: 126
Joined: 5/29/2006
From: , UNITED KINGDOM
Status: offline 		Thanks for the advise guys feel a lot more confident now to bash on with it. I was wanting to put it in a 5lbs plane but am not sure how much speed it would give me. Really I want to put it in a Super Sportster ARTF have any of you put a 56FA in a plane like this or similar if so what kind of performance does it give the plane. As I don’t really know what thrust 4 strokes give I usually fly 6-6 ½ lbs planes I went from a METEOR 60 in my 6.4lbs Cap 232 to a Super Tigre G75 which I have just put in and will be running it in next week will it be similar to that thrust to weight ratio of having a G75 or the 60.

(in reply to otrcman)
       Post #: 10459

RE: Welcome to Club SAITO ! - 4/22/2008 1:23:47 AM   
N1EDM



Posts: 1829
Joined: 7/19/2002
From: Brockton, MA, USA
Status: offline 		JustEric, yup, that's a velocity stack. It should slip over the mounting screws. There will be a gap between the stack and the carb intake. Some folks thought that there should be an o-ring to fill that gap, but none is shown in the parts list. And, we've pretty much come to the conclusion that one isn't necessary after all.

otrcman, I'll send that out to your email address. I have one for 2006, and I noticed that there were some subtle differences between the 2004 and 2006 parts callouts. I think that the carb was now a revision C instead of a rev B as shown in the 2004