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Saito's New Engine: FG-90R3

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Old 03-19-2019, 08:30 AM
  #276  
marvair
 
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I start mine with this. It works fine.
Elektrische starter voor motoren tot 80cc
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Old 03-19-2019, 06:54 PM
  #277  
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i have used this starter, the TOC Roto Terminator Starter for 20-80cc with a 3 call 2800mah battery and have been amazed at just how well it has worked . for 70 dollars i couldnt ask for a better starter here is a link to ebay,

https://www.ebay.com/itm/TOC-Roto-Te...P4DjCYe0rsekcA
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Old 03-20-2019, 09:20 AM
  #278  
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Thanks Jag ............... looks the same as the one suggested by marvair.

Is anybody using the Sullivan S651 Starter to start a FG-90 R3 ? ? ? ................. PLEASE.

Andrew
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Old 03-24-2019, 06:27 PM
  #279  
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Default tachometer

The fg90 ignition module has a line for the tach. Will the dla tach work ?
Thanks
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Old 04-01-2019, 01:57 PM
  #280  
SWORDSN
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Originally Posted by HiCurrent View Post
The fg90 ignition module has a line for the tach. Will the dla tach work ?
Thanks
I'm using one on my fg60, a DLE one
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Old 04-14-2019, 04:28 PM
  #281  
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Hi guys:
My FG90 is still new. I only had less than 1 gallon of 15:1 oil mix and I'm still running the engine with it. I am using the mezlik 24x10 2 blades. My high speed needle valve is at 4.5 turns. The temperature outdoor was about 80F.
No cowl:
1. My engine was running at 250 degrees F at full RPM for less than 1 minute. The initial RPM was 6500 and was slowly going down to 6200RPM.
2. At half throttle (4300RPM) temperature was 190F
3. Attempted to rich out the high speed needle valve didn't really help, unless it was really rich like in the break in period.

With cowl and no baffle:
It was pretty much the same as no cowl, may be a little bit worse

With cowl and baffle:
The max temp I was with full throttle for less than 1 minute was about 220F.

My question is:
1. what prop are you using.
2. what temperature are you seeing with the cowl on and off
3. Are you baffling the engine. If yes, please show picture
Thanks for your help.
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Old 04-14-2019, 09:24 PM
  #282  
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Originally Posted by HiCurrent View Post
Hi guys:
My FG90 is still new. I only had less than 1 gallon of 15:1 oil mix and I'm still running the engine with it. I am using the mezlik 24x10 2 blades. My high speed needle valve is at 4.5 turns. The temperature outdoor was about 80F.
No cowl:
1. My engine was running at 250 degrees F at full RPM for less than 1 minute. The initial RPM was 6500 and was slowly going down to 6200RPM.
2. At half throttle (4300RPM) temperature was 190F
3. Attempted to rich out the high speed needle valve didn't really help, unless it was really rich like in the break in period.

With cowl and no baffle:
It was pretty much the same as no cowl, may be a little bit worse

With cowl and baffle:
The max temp I was with full throttle for less than 1 minute was about 220F.

My question is:
1. what prop are you using.
2. what temperature are you seeing with the cowl on and off
3. Are you baffling the engine. If yes, please show picture
Thanks for your help.

These engines need to be baffled. What plane is it in? Are those temps on the ground or in the air?
I have a TopRcModel Zero running a FG 84. Keleo exhaust. Baffles around each cylinder...slightly behind the center-line of cylinder. The baffles should be tight to cylinders and heat sink...within a 1/8" .
My temps are in the 220f range in the air depending on the weather. Those engines can take temps in the 240 range for 15 seconds or so to be safe. I would worry about anything over 250. These are full throttle numbers. As rpm drops to 5000 or so, the temps should reduce to the 200-220 range. What you don't want is 240, 250, 260, 270, etc when you come off throttle. I don't have any pics but try Google or Youtube for ideas. On my 93" Zero, I also opened up the cowl flaps to get more hot air out the back. This really helped as much as anything.

best,

jim
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Old 04-15-2019, 02:30 PM
  #283  
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The engine is in the TopRC FW190. I have not flown the plane yet. Still checking out the engine on the ground. The temperature reading on the ground scared me. I just wanted to make sure my temperature is in line as everyone else before I take it up. I don't want to cook the engine in midair.
The cowl on the zero has more opening for the exit air than the FW190.
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Old 04-15-2019, 10:10 PM
  #284  
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Originally Posted by HiCurrent View Post
The engine is in the TopRC FW190. I have not flown the plane yet. Still checking out the engine on the ground. The temperature reading on the ground scared me. I just wanted to make sure my temperature is in line as everyone else before I take it up. I don't want to cook the engine in midair.
The cowl on the zero has more opening for the exit air than the FW190.
The lack of exit air concerns me. Not sure what you can do to improve that. You should consider some telemetry for monitoring temps in the air. YET, others have flown the Saito in the FW 190 with success. I've seen several videos on Youtube. Sounds awesome with plenty of power.

This one looks like it has a fan attached to the back of the prop to improve air flow. I believe the original full scale FW 190 was air cooled with a similar fan set-up.
I would call USA distributor Mike at caimandist.com for advice on the proper setup for the Saito.

I've been thinking about the same combo. Hope Mike can help.

jim
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Old 04-17-2019, 08:44 PM
  #285  
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Originally Posted by jimkron View Post
The lack of exit air concerns me. Not sure what you can do to improve that. You should consider some telemetry for monitoring temps in the air. YET, others have flown the Saito in the FW 190 with success. I've seen several videos on Youtube. Sounds awesome with plenty of power.
https://www.youtube.com/watch?v=TC4iFDYGNy8&t=96s

This one looks like it has a fan attached to the back of the prop to improve air flow. I believe the original full scale FW 190 was air cooled with a similar fan set-up.
I would call USA distributor Mike at caimandist.com for advice on the proper setup for the Saito.

I've been thinking about the same combo. Hope Mike can help.

jim
Buy the engine from tower. You get better deal
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Old Yesterday, 04:45 AM
  #286  
ForcesR
 
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Fan for the FG90R3.





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