Saito 125a
10-23-2005, 06:13 PM
#26
RE: Saito 125a
I think if our hobby was as popular as golf or fishing we would be able to purchase engines for much less than we are now. I want high quality engines such as Saito offers and I realize that they sell only thousands of each size, not millions so the cost stay high. I'm willing to pay as long as the designs stay current as well as the high quality is maintained. I don't want junk.
10-24-2005, 04:23 PM
#27
Junior Member
Join Date: Aug 2005
Location: , UNITED KINGDOM
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
RE: Saito 125a
Im sorry but as an OS fan i have to say what an ugly engine. (light tuch paper and stand well back)
ok is evreyone carm, but as i have just orded my Extreme Flight YAK 54 68" i think that this Saito 125a would go very well in this plane .
ok is evreyone carm, but as i have just orded my Extreme Flight YAK 54 68" i think that this Saito 125a would go very well in this plane .
10-25-2005, 02:19 PM
#31
My Feedback: (102)
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes
on
25 Posts
RE: Saito 125a
I just ordered a GK 1.25. Jim, the pictures of the 1.25 look like a perfectly scaled down 2.20, except there is a boss cast on the right side of the 2.20 cam box for a possible future vent location.
10-25-2005, 10:25 PM
#32
Banned
RE: Saito 125a
I saw this engine at the ihobbyexpo this past weekend. we'll have a video of the product manager talking about it at the show which should be up next week. seems like a good engine for the funtana 90 or showtime 4d. I'm also considering it for the Quique Yak.
10-26-2005, 02:13 AM
#33
My Feedback: (76)
Join Date: Aug 2004
Location: Baton Rouge, LA
Posts: 2,715
Likes: 0
Received 0 Likes
on
0 Posts
RE: Saito 125a
hrm, looks like it will have close to the same power as a YS110, however it is lighter so it may be just as strong as YS110.
Funtana/Showtime would be nice planes for this as well as all the hangar 9 warbirds. It will be interesting to see if Hangar 9 updates its manuals for thier .60/.90 planes to refelct the 4-stroke range... e.g. "Up to 1.25 4-stroke"
Funtana/Showtime would be nice planes for this as well as all the hangar 9 warbirds. It will be interesting to see if Hangar 9 updates its manuals for thier .60/.90 planes to refelct the 4-stroke range... e.g. "Up to 1.25 4-stroke"
10-30-2005, 11:52 PM
#35
Senior Member
My Feedback: (3)
Join Date: Nov 2002
Location: Mary Esther, Florida, FL
Posts: 20,205
Likes: 0
Received 14 Likes
on
13 Posts
RE: Saito 125a
C&P from another thread:
All I know to this point.
Bill.
Gary:
Externally the cylinder is slightly larger in diameter than the FA-100, there's a triangular reinforcement in the middle of the mounting lugs, and the sign on the side is different. Otherwise the FA-100 and FA-125a are really hard to tell apart just by looking.
Unlike another Jap model engine company we all know about, Saito does not put prototypes on the market expecting the early buyers to work the bugs out.
If you want one I'd say jump on it with no reservation. Bet it's really going to blow the OS 120 four strokes out of the water.
Bill.
Externally the cylinder is slightly larger in diameter than the FA-100, there's a triangular reinforcement in the middle of the mounting lugs, and the sign on the side is different. Otherwise the FA-100 and FA-125a are really hard to tell apart just by looking.
Unlike another Jap model engine company we all know about, Saito does not put prototypes on the market expecting the early buyers to work the bugs out.
If you want one I'd say jump on it with no reservation. Bet it's really going to blow the OS 120 four strokes out of the water.
Bill.
Bill.
10-31-2005, 01:58 AM
#36
Senior Member
My Feedback: (14)
RE: Saito 125a
ORIGINAL: yellow748
Im sorry but as an OS fan i have to say what an ugly engine. (light tuch paper and stand well back)
ok is evreyone carm, but as i have just orded my Extreme Flight YAK 54 68" i think that this Saito 125a would go very well in this plane .
Im sorry but as an OS fan i have to say what an ugly engine. (light tuch paper and stand well back)
ok is evreyone carm, but as i have just orded my Extreme Flight YAK 54 68" i think that this Saito 125a would go very well in this plane .
Initially, I favored the appearance of the OS four-strokes too. But, after owning several Saito engines and enjoying their unique performance
qualities, I have grown accustomed to their appearance and actually enjoy looking at them these days. Ditto Enya four-strokes.
What used to be some of the most beautiful engines, YS, have lately taken to resembling a Thunderbird engine with tons of gee-gaws hanging
out in the air in inappropriate places. But I doubt that a true YS afficinado would agree. <G>
10-31-2005, 02:04 AM
#37
Senior Member
My Feedback: (14)
RE: Saito 125a
ORIGINAL: DiscoWings
hrm, looks like it will have close to the same power as a YS110, however it is lighter so it may be just as strong as YS110.
Funtana/Showtime would be nice planes for this as well as all the hangar 9 warbirds. It will be interesting to see if Hangar 9 updates its manuals for thier .60/.90 planes to refelct the 4-stroke range... e.g. "Up to 1.25 4-stroke"
hrm, looks like it will have close to the same power as a YS110, however it is lighter so it may be just as strong as YS110.
Funtana/Showtime would be nice planes for this as well as all the hangar 9 warbirds. It will be interesting to see if Hangar 9 updates its manuals for thier .60/.90 planes to refelct the 4-stroke range... e.g. "Up to 1.25 4-stroke"
Any time that a Saito, or other engine running suction fuel feed, approaches the displacement of a YS, you can expect the YS to produce much more power. Don't forget YS's supercharging system and huge carbs give them a substantial advantage in power production over suction feed engines. Run more nitro in the Saito? Yes, but you could do the same thing with the YS and gain even more power. It isn't realistic to expect a Saito, OS, Enya, etc., to compete with a YS and equal or win in power production. The Saito 1.25 just isn't large enough to offset the difference in power that is produced by the YS 1.10.
12-12-2005, 10:48 AM
#38
Member
Join Date: Jan 2005
Location: Vestaburg,
MI
Posts: 87
Likes: 0
Received 0 Likes
on
0 Posts
RE: Saito 125a
Yea... Isn't it great that an engine that may be similar in weight and thrust as the YS110 will be available to purchase in the US more than twice a year for 10 minutes each offering. I am very interested in seeing the data on prop and thrust rating for this Saito 125 vs. the YS .91 upgraded motor.
12-12-2005, 11:06 AM
#39
Banned
RE: Saito 125a
ORIGINAL: butternifedge
Yea... Isn't it great that an engine that may be similar in weight and thrust as the YS110 will be available to purchase in the US more than twice a year for 10 minutes each offering. I am very interested in seeing the data on prop and thrust rating for this Saito 125 vs. the YS .91 upgraded motor.
Yea... Isn't it great that an engine that may be similar in weight and thrust as the YS110 will be available to purchase in the US more than twice a year for 10 minutes each offering. I am very interested in seeing the data on prop and thrust rating for this Saito 125 vs. the YS .91 upgraded motor.
12-12-2005, 12:21 PM
#41
Banned
RE: Saito 125a
Another advantage is that Saito WILL ramp up production to meet whatever demand is present while YS will only produce what they produce and will never increase production. Eventually that strategy may prove to be a weak one with a company like Saito churning out new and innovative products in "market" volume each year.
12-12-2005, 01:13 PM
#42
Senior Member
My Feedback: (14)
RE: Saito 125a
ORIGINAL: RCadmin
Plus the Saito 125 should cost less than the YS110 I believe? If this trend continues the competitive advantage of YS will start to wane in the marketplace. These are big strides being made by Saito here with more power and less weight. Only major difference will be the pump which a cline regulator would solve.
ORIGINAL: butternifedge
Yea... Isn't it great that an engine that may be similar in weight and thrust as the YS110 will be available to purchase in the US more than twice a year for 10 minutes each offering. I am very interested in seeing the data on prop and thrust rating for this Saito 125 vs. the YS .91 upgraded motor.
Yea... Isn't it great that an engine that may be similar in weight and thrust as the YS110 will be available to purchase in the US more than twice a year for 10 minutes each offering. I am very interested in seeing the data on prop and thrust rating for this Saito 125 vs. the YS .91 upgraded motor.
-----------------
And what about the larger carburetor and the slightly over atmospheric pressure boost that YS provides? I'm on your side, but let's stay realistic. Saitos are great sport engines, but they are not in the YS competition engine class, regardless of how much we may wish they were.
Another thing to consider is crankcase flexibility. Smaller, lighter, more compact crankcases can lead to an engine's early demise through amplified flexing. The two-stroke boys making competition engines know about this phenomenon. Seen any lightweight Rossis lately? <G>
12-12-2005, 01:22 PM
#43
Banned
RE: Saito 125a
Ed,
Don't be so sure about early demise until these things are out there. My understanding is that saito spent alot of time (read years) developing and testing this engine to achieve what they did. The supercharge effect of the YS 110 is a boost as you say but against the add'l displacement 1.25 of the Saito I'm sure it zeroes out give or take a bit plus take into account the weight savings.
Don't be so sure about early demise until these things are out there. My understanding is that saito spent alot of time (read years) developing and testing this engine to achieve what they did. The supercharge effect of the YS 110 is a boost as you say but against the add'l displacement 1.25 of the Saito I'm sure it zeroes out give or take a bit plus take into account the weight savings.
12-12-2005, 03:23 PM
#44
Senior Member
Join Date: Nov 2003
Location: Auckland, NEW ZEALAND
Posts: 1,324
Likes: 0
Received 0 Likes
on
0 Posts
RE: Saito 125a
Guys - I'm sure the Saito 125 will go well, but I doubt very much it's going to approach the YS 1.10 in power. Don't you think we're getting a little caught up in the hype?
Look at the Saito 1.00 as a guide. It's nice and light for a 17.1 cc engine but its power output per cc is pretty much average for a naturally aspirated engine.
The new engine is 20.5 cc and has a manufacturer's imposed rev range limited to 10,000 rpm. Why should this engine perform materially better than any other 1.20 naturally asipirated engine, let alone a YS 1.10 which we know can match a Saito 1.5.
I think we should applaud Saito for packaging a 1.25 ci engine in such a small, light case, but let's not set too high an expectation for them on the power front.
Edited: removed rogue apostrophe
Look at the Saito 1.00 as a guide. It's nice and light for a 17.1 cc engine but its power output per cc is pretty much average for a naturally aspirated engine.
The new engine is 20.5 cc and has a manufacturer's imposed rev range limited to 10,000 rpm. Why should this engine perform materially better than any other 1.20 naturally asipirated engine, let alone a YS 1.10 which we know can match a Saito 1.5.
I think we should applaud Saito for packaging a 1.25 ci engine in such a small, light case, but let's not set too high an expectation for them on the power front.
Edited: removed rogue apostrophe
12-13-2005, 06:26 PM
#45
Senior Member
My Feedback: (4)
Join Date: Jul 2002
Location: Canton,
MI
Posts: 2,914
Likes: 0
Received 0 Likes
on
0 Posts
RE: Saito 125a
ORIGINAL: Harry Lagman
Guys - I'm sure the Saito 125 will go well, but I doubt very much it's going to approach the YS 1.10 in power. Don't you think we're getting a little caught up in the hype?
Look at the Saito 1.00 as a guide. It's nice and light for a 17.1 cc engine but its power output per cc is pretty much average for a naturally aspirated engine.
The new engine is 20.5 cc and has a manufacturer's imposed rev range limited to 10,000 rpm. Why should this engine perform materially better than any other 1.20 naturally asipirated engine, let alone a YS 1.10 which we know can match a Saito 1.5.
I think we should applaud Saito for packaging a 1.25 ci engine in such a small, light case, but let's not set too high an expectation for them on the power front.
Edited: removed rogue apostrophe
Guys - I'm sure the Saito 125 will go well, but I doubt very much it's going to approach the YS 1.10 in power. Don't you think we're getting a little caught up in the hype?
Look at the Saito 1.00 as a guide. It's nice and light for a 17.1 cc engine but its power output per cc is pretty much average for a naturally aspirated engine.
The new engine is 20.5 cc and has a manufacturer's imposed rev range limited to 10,000 rpm. Why should this engine perform materially better than any other 1.20 naturally asipirated engine, let alone a YS 1.10 which we know can match a Saito 1.5.
I think we should applaud Saito for packaging a 1.25 ci engine in such a small, light case, but let's not set too high an expectation for them on the power front.
Edited: removed rogue apostrophe
My experience with YS 110 is that with stock muffler and 20% nitro fuel, its power is somewhere between Saito 120 and Saito 150 in stock form & same 20% fuel. YS 110 will start to catch up to Saito 150 when nitro content goes up and stock muffler is removed. and at a prop that is too small for Saito 150 to show its true color.
I think if the Saito 125 scales well with nitro and be able to come close to its bigger brother 150, it may very well match the YS 110 in power.
12-13-2005, 09:02 PM
#47
My Feedback: (102)
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes
on
25 Posts
RE: Saito 125a
Ernie, they use the crankcase area and a rotary valve to shove two swept crankcases volumes worth of air and fuel into the intake track and in doing so achieve the equivalent of approximately 30 to 40% extra intake charge and power. When they work well they are great, when they don't they are a genuine pain in the place of your choice.
12-14-2005, 12:45 AM
#48
Join Date: Jul 2002
Location: Tacoma,
WA
Posts: 5,037
Likes: 0
Received 0 Likes
on
0 Posts
RE: Saito 125a
Thanks Hobbsy! Of the YS models, one or two increase the incoming charge this way though? The others seem to be real powerhouses also.
Does anyone have a clue as to why using crankcase pressure hasn't been used in larger gasoline engines?
Thanks,
Ernie
Does anyone have a clue as to why using crankcase pressure hasn't been used in larger gasoline engines?
Thanks,
Ernie