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Old 04-12-2019, 03:13 PM
  #40101  
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Default Saito FA82 CR Mod

Gary, the muffler you sent me yanked another 300 rpm out of the pig!

Now 9600 rpm with an APC 14x6 and 15% nitro. It's getting there, just need to find another 200 rpm.
Old 04-12-2019, 03:16 PM
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Originally Posted by mirion
The needle is all I need if I use the original carb. I assume that the fuel nipple is on the needle assembly and I would need that also but am uncertain how many parts are involved. Because I am unfamiliar with this carb, I should probably pull it apart to see what else may be damaged. What is the recommended procedure to pull out the retaining clip that holds the barrel in, a small needle nose maybe?
Took a bit of doing but I did get it done. Will follow with some pics later
Old 04-12-2019, 05:05 PM
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Got my 60t up and running. Will fly the cub with this instead of the 90ts.

Still love me some glow!

Old 04-12-2019, 05:10 PM
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Nice Row, sweet purr.
Old 04-12-2019, 05:34 PM
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Originally Posted by Glowgeek
Gary, the muffler you sent me yanked another 300 rpm out of the pig!

Now 9600 rpm with an APC 14x6 and 15% nitro. It's getting there, just need to find another 200 rpm.
now what muffler did he send you, was it one of his own devises, cause no matter what RPM I get out of my FA100 another 200 would do better, picks picks picks we need

a little side note here for you guys,
hey guys, I just thought I would inform you of a Vermont state law that you should know if you have a thought of visiting Vermont, in Vermont it is illegal to take your close off in public, but if you take your close off in your dwelling it is legal for you to leave your dwelling unclothed/nude and go about.
just thought here that it may be some information of interest to some of you that may be visiting Vermont this summer.


Jim
Shakespeare once wrote "Beer is great within it's moments, but a Saito engine will tickle your fancy for years
Old 04-12-2019, 06:10 PM
  #40106  
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Originally Posted by Glowgeek
Gary, the muffler you sent me yanked another 300 rpm out of the pig!

Now 9600 rpm with an APC 14x6 and 15% nitro. It's getting there, just need to find another 200 rpm.
maybe you should Email or PM David McIntire and see if he has a used FA 100 Carb and Manifold ??


Jim
Old 04-13-2019, 03:26 AM
  #40107  
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Originally Posted by Glowgeek
Gary, the muffler you sent me yanked another 300 rpm out of the pig!

Now 9600 rpm with an APC 14x6 and 15% nitro. It's getting there, just need to find another 200 rpm.
Here are David Gierke's results on the 82-a, I have AN 82-b B I should run for you.

Using APC props

Last edited by Hobbsy; 04-13-2019 at 03:37 AM.
Old 04-13-2019, 03:30 AM
  #40108  
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Originally Posted by the Wasp
maybe you should Email or PM David McIntire and see if he has a used FA 100 Carb and Manifold ??


Jim
Jim, does your 115 have the size stamped on the muffler, thanks, Dave

I'll have to do this with a Xoar 14x6: Graupner G-Sonic 14x6 Saito 82-B rpm ===9,150, idle===1,770 on 10% FUEL.

Last edited by Hobbsy; 04-13-2019 at 03:36 AM.
Old 04-13-2019, 03:55 AM
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Originally Posted by Hobbsy
Here are David Gierke's results on the 82-a, I have AN 82-b B I should run for you.Using APC props
Yes thanks, I'm familiar with that review. I have an 82a (the one I am modifying) and an 82b which is in my Sbach. In stock form they both produce the same rpm with three different test props and specifically 9200 rpm with an apc 14x6. The same rpm you have previously posted with a MA 14x6 iirc.

Now with Gary's custom muffler and raising the compression ratio to 10.5:1 the 82a is reaching 9600 rpm all other things being equal.

Last edited by Glowgeek; 04-13-2019 at 03:59 AM.
Old 04-13-2019, 04:09 AM
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Dave, are you planning to test your 82b with a 115 muffler?

Last edited by Glowgeek; 04-13-2019 at 04:20 AM.
Old 04-13-2019, 04:17 AM
  #40111  
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Black grease from factory


The black grease came out throughout the entire 50 minute break in run.
No sir, I got rid of the 115 as soon as the 125 came out, I'll use the stock revised 82-B muffler and the latest TurboHeader, the welded one. I seriously doubt that I have an APC 14 x 6. I did keep a couple of the 115 pictures.

Last edited by Hobbsy; 04-13-2019 at 04:18 AM. Reason: Add content
Old 04-13-2019, 04:25 AM
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Originally Posted by Hobbsy
I'll use the stock revised 82-B muffler and the latest TurboHeader, the welded one. I seriously doubt that I have an APC 14 x 6.
Another head-to-head muffler test, nice.
Old 04-13-2019, 01:17 PM
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Originally Posted by Glowgeek
Gary, the muffler you sent me yanked another 300 rpm out of the pig!

Now 9600 rpm with an APC 14x6 and 15% nitro. It's getting there, just need to find another 200 rpm.

Sorry, Looks like we posted close to the same time. I missed your post. Good news there!

Was gone to Cleveland all day, just got back home. Delivered a rather large radio transmitter , 1100 pounds worth!

If I get time I will try to post details of carb repairs bit later. Heading out to the field for a while.
Old 04-13-2019, 02:03 PM
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Originally Posted by the Wasp
now what muffler did he send you, was it one of his own devises, cause no matter what RPM I get out of my FA100 another 200 would do better, picks picks picks we need
Jim,

That was a home made muffler from a batch I made a few months back . Same specs as a much earlier version but a different assembly technique.
A bit more involved tha simply welding. I leave a thinned lip,apply real SWAK , heat shrink interference fit the pressed in ends. I then roll crimp the connection. Very tight joint . Easy to polish without added metal finishing too.


The rpm gain over the Saito muffler sounds about right..

Last edited by Jesse Open; 04-13-2019 at 02:05 PM.
Old 04-13-2019, 04:03 PM
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Hey Gary, is that a 12mm 60 curved manifold shown in your pic or maybe a 10mm? I can't find a saito 12mm one anywhere online and the factory fa82 15 manifold doesn't play nice with your end-threaded muffler. Maybe a 45 adaptor would work but I can't find one of those either.

Last edited by Glowgeek; 04-13-2019 at 04:30 PM.
Old 04-13-2019, 06:17 PM
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Originally Posted by Hobbsy
Jim, does your 115 have the size stamped on the muffler, thanks, Dave

I'll have to do this with a Xoar 14x6: Graupner G-Sonic 14x6 Saito 82-B rpm ===9,150, idle===1,770 on 10% FUEL.
Dave, yes it does have the number 115 stamped on it

Jim

Last edited by the Wasp; 04-13-2019 at 06:25 PM.
Old 04-13-2019, 06:27 PM
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Originally Posted by Jesse Open


Jim,

That was a home made muffler from a batch I made a few months back . Same specs as a much earlier version but a different assembly technique.
A bit more involved tha simply welding. I leave a thinned lip,apply real SWAK , heat shrink interference fit the pressed in ends. I then roll crimp the connection. Very tight joint . Easy to polish without added metal finishing too.
The rpm gain over the Saito muffler sounds about right..

I remember you posting that muffler before, you did a nice job

Jim
Old 04-13-2019, 06:53 PM
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o
Originally Posted by Glowgeek
Another head-to-head muffler test, nice.
you want anther 200 RPM you said, try rounding the inside bottom of your exhaust port some, the stock port has a large bevel whereby the exhaust has to flow over. rounding the bottom of the inside edge will allow the exhaust to flow faster, much like an airfoil, you don't have to do much


Jim

Last edited by the Wasp; 04-13-2019 at 06:57 PM.
Old 04-14-2019, 01:53 AM
  #40119  
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Originally Posted by Glowgeek
Hey Gary, is that a 12mm 60 curved manifold shown in your pic or maybe a 10mm? I can't find a saito 12mm one anywhere online and the factory fa82 15 manifold doesn't play nice with your end-threaded muffler. Maybe a 45 adaptor would work but I can't find one of those either.

I re-bend the factory pipe. Maybe get some pics posted of the setup. Heat is required. I use a pair of internally threaded bars for leaverage and control.
Old 04-14-2019, 02:06 AM
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Originally Posted by the Wasp
o

you want anther 200 RPM you said, try rounding the inside bottom of your exhaust port some, the stock port has a large bevel whereby the exhaust has to flow over. rounding the bottom of the inside edge will allow the exhaust to flow faster, much like an airfoil, you don't have to do much


Jim
Bolt on power first eg (muffler, carb, intake) etc. Machining the deck for higher compression is easy enough, porting the short turns would be a last resort.

Last edited by Glowgeek; 04-14-2019 at 02:26 AM.
Old 04-14-2019, 02:32 AM
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Originally Posted by Jesse Open



I re-bend the factory pipe. Maybe get some pics posted of the setup. Heat is required. I use a pair of internally threaded bars for leaverage and control.
Do you bend the manifold around a piece of round stock to keep the inside radius from kinking? Apply most of the heat to the outside radius to get it to stretch?
Old 04-14-2019, 02:44 AM
  #40122  
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MacGregor's has all the Saito singles in stock from the little 30 through the 180 except for the 72, 91-s and the 115.
Old 04-14-2019, 04:49 AM
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Originally Posted by Glowgeek
Do you bend the manifold around a piece of round stock to keep the inside radius from kinking? Apply most of the heat to the outside radius to get it to stretch?
Pretty much that way. Most of the heat on the long side is nearer the tangents than the center of the radius.

The threaded chopsticks really help.
Old 04-14-2019, 06:40 AM
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Gary, I need your opinion on a design. PM'd you.
Old 04-14-2019, 07:55 AM
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Already for it's first run up. Of course today the weather sucks. 30 MPH winds and heavy snow.



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