Glow Engines Discuss RC glow engines

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Old 02-22-2019, 03:24 AM
  #39001  
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Those throttle linkage setups do work well but bending the throttle control rod into a 180į loop accomplishes the same thing and gets rid of monkey motion parts.

Last edited by Glowgeek; 02-22-2019 at 03:47 AM.
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Old 02-22-2019, 04:04 AM
  #39002  
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Originally Posted by Glowgeek View Post
Those throttle linkage setups do work well but bending the throttle control rod into a 180į loop accomplishes the same thing and gets rid of monkey motion parts.
EXACTLY A little trombone style U turn works great, with a lot less backlash. However, I think in this case, the 60T issue may be another matter . I have made extenstions in order to resolve that problem , even with singles and they have worked out fine. The OP can PM me if he needs help getting one made.


Jim, I "think" the reply FINALLY went through , after typing, sending that resulted in blanko screens.

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Old 02-22-2019, 04:54 AM
  #39003  
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Originally Posted by the Wasp View Post
yes, but today there are 700 HP 427 LS engines that get 18 MPG

Jim
The bore and stroke for the 427. 428 and 429 engines:
427 Bore==4.233 Stroke==3.78
428 Bore==4.13 Stroke==3.984
429 Bore==4.36 Stroke==3.59

My linkage method.
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Old 02-22-2019, 05:05 AM
  #39004  
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Thanks guys and yes the 60t throttle setup is crazy the 90ts I have is not this bad. I need it to miss the gas tank and miss the frame and be a barrel type. Here is a example of one but it is not a barrel type. I might have to end up making something.
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Old 02-22-2019, 05:56 AM
  #39005  
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The backordered con rod finally came in for my fa82, fits looser than my og rod so I'll just reuse the og. Since no one here seemed to have a problem with the pic I posted of my piston top flaws I'll reuse it as well. The ring lands, skirt and rod pin bore are all in new condition so why not. I'll be slapping this money pit back together soon with a new piston ring so it should run great now.

NEW PARTS LIST:
Cam
Cam pin
Tappets
Bearings
Piston Ring
Push Rod Cover Seals
A ton of tinkering fun

Lonnie (aka glowy?)

Edit: Add a carb oring kit to that list

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Old 02-22-2019, 06:04 AM
  #39006  
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In the middle of the fun part.
Wait a minute, the Fun part cancels out the money pit part, honest

PS, my grandson adds Bob to everybody's name, so you would be GlowBob.

Last edited by Hobbsy; 02-22-2019 at 06:06 AM. Reason: Add content
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Old 02-22-2019, 07:03 AM
  #39007  
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Iím sure the trombone method works as well as the monkey motion method but the later offers less slop IMO. Not that a throttle barrel requires much force to move. Thatís why I prefer smaller servos for throttle.
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Old 02-22-2019, 07:06 AM
  #39008  
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Originally Posted by Hobbsy View Post
The bore and stroke for the 427. 428 and 429 engines:
427 Bore==4.233 Stroke==3.78
428 Bore==4.13 Stroke==3.984
429 Bore==4.36 Stroke==3.59

My linkage method.
Yep, Those DuBro type kluges I don't think apply to what the OP needs.
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Old 02-22-2019, 07:11 AM
  #39009  
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Iím wondering if I just bought a money pit as well? Recieved a Saito 72a yesterday that needs new bearings and maybe a carb o-ring kit. Was told it turns over smooth. Once again, the main bearing is seized and spinning on the crankshaft.

Last edited by Quikturn; 02-22-2019 at 07:51 AM.
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Old 02-22-2019, 07:36 AM
  #39010  
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Why not just use a cable? It's all I ever use for the 4 strokes and I have a few that the throttle arm almost touches the firewall. The trick I found is to slot the outside part of the firewall, and leave the inside part the diameter of the sheath, this allows the cable to move with the arc of the throttle arm and not bind. It also makes it easy to route around the fuel tank and battery pack.
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Old 02-22-2019, 07:53 AM
  #39011  
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The Saito 60T has the carb in a tough spot. I used to have one. The usual dodges for the most part don't cut it.
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Old 02-22-2019, 08:02 AM
  #39012  
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"PS, my grandson adds Bob to everybody's name, so you would be GlowBob."

Funny.

I agree, the money means little to me if the 82 performs well. Just the enjoyment of knowing I got it running right is enough. Every time I fly it I'll be thinking, "Wow, listen to that thing go"!

-Glowy, "The optimist"-
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Old 02-22-2019, 08:15 AM
  #39013  
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Originally Posted by acdii View Post
Why not just use a cable? It's all I ever use for the 4 strokes and I have a few that the throttle arm almost touches the firewall. The trick I found is to slot the outside part of the firewall, and leave the inside part the diameter of the sheath, this allows the cable to move with the arc of the throttle arm and not bind. It also makes it easy to route around the fuel tank and battery pack.
That's a good trick. The 82 on my Sbach is mounted so far back I had to cut the slot all the way through the firewall for clevis clearance, then I fabricated a small plywood bracket to capture the throttle cable sheath about 2" behind the firewall. Works wonderfully. There's always a way but sometimes we have to be creative.
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Old 02-22-2019, 08:32 AM
  #39014  
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Originally Posted by Quikturn View Post
Iím wondering if I just bought a money pit as well? Recieved a Saito 72a yesterday that needs new bearings and maybe a carb o-ring kit. Was told it turns over smooth. Once again, the main bearing is seized and spinning on the crankshaft.
You're gonna cringe when I say this but I did use JB Weld to fix a preowned OS46AX with that very problem. The new bearing was not a perfect slip fit once the crank was cleaned up; about .003" of slop. I cleaned the bearing inner race and crank with crc brakeclean, applied a small amount of JB Weld and put it together. Flown it for 2 yrs that way and it still runs good, well as good as OS can.....heehee

Last edited by Glowgeek; 02-22-2019 at 08:43 AM.
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Old 02-22-2019, 09:13 AM
  #39015  
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Originally Posted by Glowgeek View Post
You're gonna cringe when I say this but I did use JB Weld to fix a preowned OS46AX with that very problem. The new bearing was not a perfect slip fit once the crank was cleaned up; about .003" of slop. I cleaned the bearing inner race and crank with crc brakeclean, applied a small amount of JB Weld and put it together. Flown it for 2 yrs that way and it still runs good, well as good as OS can.....heehee
Yikes!!! I hope it doesnít come to that. I had to replace the bearings on my 65 after a season of running it. I put ARO in it and hung the model nose down and still had rusty bearings the following spring. Went with SS bearings and still has them in there. They were a very tight fit to get out and new ones back in.
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Old 02-22-2019, 09:22 AM
  #39016  
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Originally Posted by Quikturn View Post


Yikes!!! I hope it doesnít come to that. I had to replace the bearings on my 65 after a season of running it. I put ARO in it and hung the model nose down and still had rusty bearings the following spring. Went with SS bearings and still has them in there. They were a very tight fit to get out and new ones back in.
Yep, been there. ATF does not seem to work great as a long term storage solution, at least for me. Maybe I wasn't distributing it well enough in the case, not sure. Once I started using CorrosionX my long term storage rusty bearing problems disappeared. I still use ATF after each day of flying, seems to work well for that.

Last edited by Glowgeek; 02-22-2019 at 09:25 AM.
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Old 02-22-2019, 09:25 AM
  #39017  
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I started mixing a little bit of castor to my AFOs to help the lube stay in place. Seems to work for me.
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Old 02-22-2019, 09:32 AM
  #39018  
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Originally Posted by Quikturn View Post
I started mixing a little bit of castor to my AFOs to help the lube stay in place. Seems to work for me.
Sounds interesting, as long as it doesn't gum up. I would probably shy away from castor in an ARO for 4S engines, It only takes a little gumming in the tappet tubes to stop the tappets from freely rotating.
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Old 02-22-2019, 09:50 AM
  #39019  
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Doesnít seem to gum up at all. I just add a little bit.
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Old 02-22-2019, 09:55 AM
  #39020  
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I use "Waylube" in ARO. It is made for lathe, mill and other machine ways. A tacky, long chain oil stock, it can cling to vertical surfaces for loong periods of time.
However, I do use castor at 2% in my four stroke fuel with no gumming problems at all.
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Old 02-22-2019, 10:09 AM
  #39021  
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Originally Posted by Glowgeek View Post
That's a good trick. The 82 on my Sbach is mounted so far back I had to cut the slot all the way through the firewall for clevis clearance, then I fabricated a small plywood bracket to capture the throttle cable sheath about 2" behind the firewall. Works wonderfully. There's always a way but sometimes we have to be creative.
Ah, see thats the beauty of a cable, no clevis to make room for. I get the throttle cable kits that have the screw fitting that attaches to the hole in the arm so it can get into tight areas.
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Old 02-22-2019, 10:36 AM
  #39022  
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Originally Posted by Hobbsy View Post


Sleeve for possibly reducing the diameter of a Saito 120 carb?


Came with Blue and White box Saito 120.
Actually looks exactly like an Enya carb sleeve.
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Old 02-22-2019, 11:38 AM
  #39023  
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Originally Posted by Quikturn View Post
I’m wondering if I just bought a money pit as well? Recieved a Saito 72a yesterday that needs new bearings and maybe a carb o-ring kit. Was told it turns over smooth. Once again, the main bearing is seized and spinning on the crankshaft.

yeeaa, yesterday I received a "Brand New" 15y.o. SCR battery charger from a guy on RCG, "brand new" his add said, and brand new it looked, yet the battery clamps are corroded from battery acid. I traded stuff worth more (if I took the time to sell) than his price he wanted in his add. he will not be getting feedback from me

Garry, I received your PM, I sent back a thank you. thank you LOL

LOL "GlowBob": now that's a nick name I can remember

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Old 02-22-2019, 12:04 PM
  #39024  
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Originally Posted by Jesse Open View Post
Actually looks exactly like an Enya carb sleeve.
yeup, this site IS screwy, it wont let me quote the photos,,

what I want to say about the item in the lower photo, is>> I hate to say this, but I think I have seen that item before, but I can not remember where or what it is, but I do think it is an Installment Tool of some sort
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Old 02-22-2019, 12:22 PM
  #39025  
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rowdog_14, I just sent you a PM about your Heli photo.

Jim
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