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Old 08-12-2020, 03:16 AM
  #47226  
Hobbsy
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Originally Posted by Hyjinx View Post
Use 74"pistons with 80 inch flywheels, er wrong group of motorheads lol stroker saitos needing clearance.
what next , plates under the jugs.
too much fun
I saw that very thing when I was about 14 years old on a 1936 Harley 74 flat head. He wanted his Harley to be 80 cubic inches like the Indian. He welded up the top of the crank throw by 1/16", machined it perfectly round and made .125" plates for under the cylinders. He was brutally murdered about 10 years later and the bike by that time had 300,000 miles on it.

I'm heading out now to finish the 120-s.
Old 08-12-2020, 05:18 AM
  #47227  
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Default Out with the FA100, in with what?

So, I've been in a quandary over which engine to replace the 100 with in my TF 60 arf P-51. Before tearing my gear out on a deadstick landing the 100 with a 14x8 flew it ok but it wasn't reaching scale speeds, seemed lethargic at around 60 mph.

I'd thought to put my 115 in but too much rework with minimal reward. Considered my 125 because it uses the same mounting pattern as the 100 but too much fuel consumption. Then it hit me, the fg21 has the same mounting pattern as the 100/125 and sips dirt cheap fuel! Ding ding ding.

Found an affordable fg21 on rcg so that's the new direction I'm heading in. With 14x10 prop I should see an approx increase in speed of 12mph and a little more thrust to boot. This P51 is going to provide a LOT of hours of cheap flying fun. Well, that is until it reaches its expiration date.
Old 08-12-2020, 07:09 AM
  #47228  
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I'd bet that the 125 would not use a noticeable amount more fuel.

I have two 120's fixed up and ready to test, a 120-s with an N on the right lug and an earlier 120 with no initial n the right lug. Mike gets one back, his choice. Well, embarrassing, I didn't down load the pictures yet.


120-s on the left

Last edited by Hobbsy; 08-12-2020 at 07:17 AM. Reason: Add pictures
Old 08-12-2020, 10:10 AM
  #47229  
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Originally Posted by Glowgeek View Post
So, I've been in a quandary over which engine to replace the 100 with in my TF 60 arf P-51. Before tearing my gear out on a deadstick landing the 100 with a 14x8 flew it ok but it wasn't reaching scale speeds, seemed lethargic at around 60 mph.

I'd thought to put my 115 in but too much rework with minimal reward. Considered my 125 because it uses the same mounting pattern as the 100 but too much fuel consumption. Then it hit me, the fg21 has the same mounting pattern as the 100/125 and sips dirt cheap fuel! Ding ding ding.

Found an affordable fg21 on rcg so that's the new direction I'm heading in. With 14x10 prop I should see an approx increase in speed of 12mph and a little more thrust to boot. This P51 is going to provide a LOT of hours of cheap flying fun. Well, that is until it reaches its expiration date.
you are going to worry about the 125 drinking 1oz of fuel more than your 100 will in a flight ? I think you would be more worried what Pete would say LOL I mean will he even talk to you again after he speaks his peace. don't forget, the Fg has an extra batt, extra switch, Ignition, and a heaver plug, add the extra wires and mounting hardware, my god man, you will add another pound to the plane. but buy the Fg any ways, it's a Saito

Jim
Old 08-12-2020, 10:16 AM
  #47230  
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Originally Posted by Hobbsy View Post
I'd bet that the 125 would not use a noticeable amount more fuel.

I have two 120's fixed up and ready to test, a 120-s with an N on the right lug and an earlier 120 with no initial n the right lug. Mike gets one back, his choice. Well, embarrassing, I didn't down load the pictures yet.

120-s on the left

look how much larger the S's intake manifold diameter is. look's to have a different head too.

do both engines use the same valves ?

Jim
Old 08-12-2020, 11:05 AM
  #47231  
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Originally Posted by the Wasp View Post
look how much larger the S's intake manifold diameter is. look's to have a different head too.

do both engines use the same valves ?

Jim
I noticed that too and I was thinking the bigger muffler would be needed by the S. But hey what do I know.
Old 08-12-2020, 11:49 AM
  #47232  
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Originally Posted by FlyerInOKC View Post
I noticed that too and I was thinking the bigger muffler would be needed by the S. But hey what do I know.
well, you were smart enough to notice the manifold

LOL
Jim
Old 08-12-2020, 12:07 PM
  #47233  
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Originally Posted by Hobbsy View Post
I'd bet that the 125 would not use a noticeable amount more fuel.
A 125 is 25% larger than a 100, makes 25% more hp and uses more fuel. Besides, the 100 costs to much in fuel to be a daily flyer.

Originally Posted by the Wasp View Post
you are going to worry about the 125 drinking 1oz of fuel more than your 100 will in a flight ? I think you would be more worried what Pete would say LOL I mean will he even talk to you again after he speaks his peace. don't forget, the Fg has an extra batt, extra switch, Ignition, and a heaver plug, add the extra wires and mounting hardware, my god man, you will add another pound to the plane. but buy the Fg any ways, it's a Saito

Jim
No extra batt or switch, I use a single 2S Life batt and a TechAero IBEC. The ignition, wires and heavier plug weigh less than the extra 8 oz of fuel I'd have to carry around using glow ignition. The big payoff is an hour of flying for 13 cents in gas and one battery charge.

I'll weigh all the parts for and let you know the difference in AUW dry. Flying weight (wet) will certainly be less than with glow ignition due to reduced onboard fuel requirements and as a result the cg will change less during flight.


Last edited by Glowgeek; 08-12-2020 at 01:09 PM.
Old 08-12-2020, 02:45 PM
  #47234  
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Originally Posted by the Wasp View Post
you are going to worry about the 125 drinking 1oz of fuel more than your 100 will in a flight ? I think you would be more worried what Pete would say LOL I mean will he even talk to you again after he speaks his peace. don't forget, the Fg has an extra batt, extra switch, Ignition, and a heaver plug, add the extra wires and mounting hardware, my god man, you will add another pound to the plane. but buy the Fg any ways, it's a Saito

Jim
Yeah buy it!
Mine (FG21) seems a little less powerful than a glo 120, but it really sounds great and starts easy!
the weight and extra electronics are not a plus though
For me.
And that little box being made in covid land is not welcome here anymore.
Old 08-12-2020, 02:59 PM
  #47235  
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Yep, the FG21 in my SR Telemaster has been a dandy. Didn't want to pull it to install in the P51 so I bought another one.

I just love the combination of 2S LiFe batt, IBEC and a gas engine. I leave my gassers fully fueled and charged and whenever I get the urge to fly it's ready. I'm slowly moving all my 60 size and larger aircraft over to 2S LiFe, even if still on glow ignition. Charge it, leave it for 6 months and it's still fully charged. Gotta love that!
Old 08-12-2020, 10:00 PM
  #47236  
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Jim has a good point lonnie....your comments about fa125's have caused me considerable mental anguish which i have only just now managed to subdue after hours of emu export treatment and a hand rolled cigar.

Dave a nicely painted prop. Any automotive paint out of a rattle can is usually single pack paint and mildly resistant to nitro. Any 2pac is better. If you want sharp paint edges where you mask up buy a roll of "fine line" tape in 1/8 1/4 or 1/2 inch widths, as always press the edge down firmly.

ps i like the unpredictable bark you get out of well tuned saito fourstrokes that run high nitro and glow ignition, compared to, an fa125 on cdi that is so meek and reliable it reminds you of your grandmothers pedal powered sewing machine

pps lonnie i'm accusing you of being a closet supporter of the Uncool Petrol Yousers Organization Undermining Respectable Saito (owners) or upyours for short

Last edited by Monty Python; 08-12-2020 at 11:08 PM.
Old 08-12-2020, 11:32 PM
  #47237  
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Pete youíre funny.
the Australian shredder just tried to burn my house down we donít have any power so Iím running off the generator through a drop cord to a three plug adapter he chewed the end of the adapter just enough to cause short and blow a circuit breaker,of course it burn the carpet before it blew the circuit breaker.

I am now the proud owner a Saito 80 twin and a Saito 220.
Now I have to check the mail box every hour and wonder way there not here yet. So how long should I wait before filling a complaint with eBay because I won theM 24 hours ago and havenít received them yet.
Old 08-13-2020, 02:27 AM
  #47238  
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The ID of the 120-s intake pipe is 10mm, the same as the 150's intake but the 120-s carb venturi is 9.5 mm and 150's is 10 mm.

Mike, I have a 220 carb body and maybe a barrel, and a piston too. Do you have a 130 twin?
Old 08-13-2020, 02:54 AM
  #47239  
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Originally Posted by Hobbsy View Post
The ID of the 120-s intake pipe is 10mm, the same as the 150's intake but the 120-s carb venturi is 9.5 mm and 150's is 10 mm.

Mike, I have a 220 carb body and maybe a barrel, and a piston too. Do you have a 130 twin?
I have a 182 twin and a 300 twin but No 130 twin

Last edited by Captcrunch44; 08-13-2020 at 03:00 AM.
Old 08-13-2020, 03:15 AM
  #47240  
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I'll send you one.

You have to be very careful when researching parts for the 120's, 150's and 180's. One of the 120's shares valves with the 150, the 150 shares valves with the 180 in all cases. The intake pipes also have some mix and match issues. So, choose one specific engine and then read carefully.

PS, I probably have the mufflers switched on the two 120's.
Old 08-13-2020, 03:22 AM
  #47241  
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Originally Posted by Monty Python View Post
Jim has a good point lonnie....your comments about fa125's have caused me considerable mental anguish which i have only just now managed to subdue after hours of emu export treatment and a hand rolled cigar.

Dave a nicely painted prop. Any automotive paint out of a rattle can is usually single pack paint and mildly resistant to nitro. Any 2pac is better. If you want sharp paint edges where you mask up buy a roll of "fine line" tape in 1/8 1/4 or 1/2 inch widths, as always press the edge down firmly.

ps i like the unpredictable bark you get out of well tuned saito fourstrokes that run high nitro and glow ignition, compared to, an fa125 on cdi that is so meek and reliable it reminds you of your grandmothers pedal powered sewing machine

pps lonnie i'm accusing you of being a closet supporter of the Uncool Petrol Yousers Organization Undermining Respectable Saito (owners) or upyours for short
Pete, go to a mountain top and blow on your Digeridoo for that much needed calming effect. Better than chugging Emu expulsions. Give me a call sometime on your Bullroarer, we'll chat.

I've not heard a 125 on cdi but my fg21does sound a little fluffy.
Old 08-13-2020, 04:32 AM
  #47242  
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I'm with Pete real R/C engines burn alcohol!



Just not the same alcohol used to lubricate the pilot!
Old 08-13-2020, 04:36 AM
  #47243  
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Well

Last time I checked the title of this thread was "Welcome to Club Saito", not "Welcome to Club Methanol".

Last edited by Glowgeek; 08-13-2020 at 04:51 AM.
Old 08-13-2020, 05:07 AM
  #47244  
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Originally Posted by Captcrunch44 View Post
Pete youíre funny.
the Australian shredder just tried to burn my house down we donít have any power so Iím running off the generator through a drop cord to a three plug adapter he chewed the end of the adapter just enough to cause short and blow a circuit breaker,of course it burn the carpet before it blew the circuit breaker.

I am now the proud owner a Saito 80 twin and a Saito 220.
Now I have to check the mail box every hour and wonder way there not here yet. So how long should I wait before filling a complaint with eBay because I won theM 24 hours ago and havenít received them yet.
You know, for the price of those Saitos, you could put a real transfer switch in!
Old 08-13-2020, 05:09 AM
  #47245  
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Originally Posted by Glowgeek View Post
Well

Last time I checked the title of this thread was "Welcome to Club Saito", not "Welcome to Club Methanol".
Well played!
Old 08-13-2020, 05:46 AM
  #47246  
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Originally Posted by Glowgeek View Post
Well

Last time I checked the title of this thread was "Welcome to Club Saito", not "Welcome to Club Methanol".

Much more discussion of FG's there than here in Glow: https://www.rcuniverse.com/forum/gas-engines-142/
Old 08-13-2020, 06:03 AM
  #47247  
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Originally Posted by Hobbsy View Post
Much more discussion of FG's there than here in Glow: https://www.rcuniverse.com/forum/gas-engines-142/
They started that thread as kind of a self-help group therapy group to support of those who switched to Gasoline from Methanol fuels and can't afford mental healthcare.
Old 08-13-2020, 06:47 AM
  #47248  
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Yes sir, I didn't know it was possible to discuss something as much as those FG's got discussed over there. Some Spare parts.


Saito intake pipes 10.5 mm all and a 34 mm piston, 150, I think.

Saito carb bodies, 10 mm rear, 11.5 mm front.

Last edited by Hobbsy; 08-14-2020 at 02:11 AM. Reason: Corrected
Old 08-13-2020, 07:18 AM
  #47249  
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Well it is too hot to fly in a lot of places....
Old 08-13-2020, 12:27 PM
  #47250  
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I bought a 120 fathead, is there a velocity stack that fits it? Maybe from a 150 or 180?

34mm is the piston diameter of the fa150.

Is this a glow forum? I didn't realize that until just now. I'll keep my gasser comments to myself.


Last edited by Glowgeek; 08-13-2020 at 12:35 PM.

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