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Search: Posts Made By: Maxam
Showing results 1 to 25 of 54
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Forum: Gas Engines
04-13-2024, 05:06 PM
Replies: 303
Views: 54,572
Posted By Maxam

Excellent! Sounds like you have that engine...

Excellent! Sounds like you have that engine sense.
Forum: Gas Engines
04-13-2024, 04:51 PM
Replies: 303
Views: 54,572
Posted By Maxam

Robert the plane is not complete yet. This is the...

Robert the plane is not complete yet. This is the baffle design the Moki radial guys use and later was manufactured for those engines. They report great effectiveness. Notice the baffles used on...
Forum: Gas Engines
04-13-2024, 04:47 PM
Replies: 303
Views: 54,572
Posted By Maxam

Robert, There is an issue with carburation on the...

Robert, There is an issue with carburation on the 5-100. When you tune the engine for "ideal" running at idle and full throttle there will exist a lean condition around 1500 to 2500 rpm. The engine...
Forum: Gas Engines
04-13-2024, 04:22 PM
Replies: 303
Views: 54,572
Posted By Maxam

My baffle

https://cimg1.ibsrv.net/gimg/www.rcuniverse.com-vbulletin/2000x1504/20240328_103432_c7360e1a2a0d355b5702f22b4a04aa1a3975e499.jpg...
Forum: Gas Engines
04-09-2024, 04:39 PM
Replies: 303
Views: 54,572
Posted By Maxam

Robert, you are wise to ask these questions. The...

Robert, you are wise to ask these questions. The rewards of proper running radials in models is great.
Forum: Gas Engines
04-09-2024, 04:37 PM
Replies: 303
Views: 54,572
Posted By Maxam

I stated 225 is close to the upper limit of...

I stated 225 is close to the upper limit of temps. Unfortunately some of the UMS engines run on the hot side. My Moki's run in the 180-190 F range. Moki states 220 is the upper limit of their...
Forum: Gas Engines
04-09-2024, 03:26 PM
Replies: 303
Views: 54,572
Posted By Maxam

Robert, Not good. I would not allow my 5-100 to...

Robert, Not good. I would not allow my 5-100 to run on the ground above 4500. RPM increases greatly in a dive. I use a 25x12 prop (Xoar) or a 26x12 Fiala. both have similar RPMs around 4000. 225F...
Forum: Gas Engines
03-23-2024, 05:11 PM
Replies: 303
Views: 54,572
Posted By Maxam

Brain fart. right just one bolt but I have never...

Brain fart. right just one bolt but I have never had a prop come off, Tighten with a real high quality wrench. Do not loc-tite. Tighten every so often especially when new. Set valves cold. better...
Forum: Gas Engines
03-23-2024, 04:38 PM
Replies: 303
Views: 54,572
Posted By Maxam

OK Robert, here we go; 1. Easy to start by hand...

OK Robert, here we go;
1. Easy to start by hand but do wear a glove.
2. shut down by either ignition shut off or complete closure of the carb
3. I have never used the E-clip, six bolts!! Prop will...
Forum: Gas Engines
03-22-2024, 04:03 PM
Replies: 303
Views: 54,572
Posted By Maxam

Yes the carb could open all the way. Valves...

Yes the carb could open all the way. Valves better too loose than too tight!
Forum: Gas Engines
03-22-2024, 02:02 PM
Replies: 303
Views: 54,572
Posted By Maxam

Glad to hear this Chris!! Maybe UMS improved the...

Glad to hear this Chris!! Maybe UMS improved the carb???? -Tom
Forum: Gas Engines
03-18-2024, 04:57 PM
Replies: 303
Views: 54,572
Posted By Maxam

You can try this but I bet the needle adjustments...

You can try this but I bet the needle adjustments will become rather sensitive.
Forum: Gas Engines
03-17-2024, 03:09 PM
Replies: 303
Views: 54,572
Posted By Maxam

To Chris

Chris. I have three UMS7-35's (glow) The stock carb is decent. I have flown them extensively. Yes I had the 5-55 and it ran OK on gas but when I tried glow one of the bottom cylinders would flood...
Forum: Gas Engines
03-07-2024, 05:43 AM
Replies: 303
Views: 54,572
Posted By Maxam

Thank you Gozonoblat for ratting my brain. I...

Thank you Gozonoblat for ratting my brain. I believe you are referring to me with the Saito carb modification. Yes when I had the 5-55, I did make an adapter for the Saito r90-3 GLOW carb which has...
Forum: Gas Engines
03-06-2024, 02:01 PM
Replies: 303
Views: 54,572
Posted By Maxam

The Saito better have 16-1 oil ratio. Then you...

The Saito better have 16-1 oil ratio. Then you are OK.
Forum: Gas Engines
03-06-2024, 01:49 PM
Replies: 303
Views: 54,572
Posted By Maxam

Robert, I have had OK success with the the 5-55...

Robert, I have had OK success with the the 5-55 with its stock carb and no pump (cannot use a pump!!!). The carb is not great but there is a trick. The choke area is too large for the engine. ...
Forum: Gas Engines
03-03-2024, 05:42 AM
Replies: 303
Views: 54,572
Posted By Maxam

Information on Phoenix Waco

Hyjinx, Are you still happy with your waco? Sent you a private message. -Tom
Forum: Gas Engines
03-03-2024, 05:40 AM
Replies: 303
Views: 54,572
Posted By Maxam

Question on the Phoenix Waco for my UMS 100

Aaron, (Hyjinx) Sent you a PM.. Thanks -Tom
Forum: Gas Engines
01-28-2024, 08:36 AM
Replies: 303
Views: 54,572
Posted By Maxam

Saito carb for the R90-3 or R12-3

Do not order the FG carb, it pumps based on pulses from a one cylinder engine. If you try it, use the FG -11 carb due to the smaller choke area. -Tom
Forum: Gas Engines
01-04-2024, 09:35 AM
Replies: 303
Views: 54,572
Posted By Maxam

Well John, I hope the Saito carb will improve...

Well John, I hope the Saito carb will improve things. Usually do! -Tom They have gotten so expensive.
Forum: Gas Engines
12-27-2023, 02:01 PM
Replies: 303
Views: 54,572
Posted By Maxam

Are you using

Sea Foam, 2 oz/ gallon? This prevented stuck valves for good.
Forum: Gas Engines
12-26-2023, 08:54 AM
Replies: 303
Views: 54,572
Posted By Maxam

Carlo, when using the pump you must screw in the...

Carlo, when using the pump you must screw in the idle and high speed mixture adjustment screws otherwise you will be too rich. Usually about 1 and 1/4 turns out from all the way in. -Tom
Forum: Gas Engines
12-19-2023, 05:47 PM
Replies: 303
Views: 54,572
Posted By Maxam

I am not familiar with that brand of pump. Start...

I am not familiar with that brand of pump. Start at 50% power and see if you get linear response as you SLOWLY accelerate from idle to full power. This is only after the engine is well broken in.
Forum: Gas Engines
12-16-2023, 06:36 PM
Replies: 303
Views: 54,572
Posted By Maxam

Chuck, get the pump!

Chuck, get the pump!
Forum: Gas Engines
04-28-2023, 08:35 AM
Replies: 303
Views: 54,572
Posted By Maxam

Lars, looks like UMS wants to compete with Saito!

Lars, looks like UMS wants to compete with Saito!
Showing results 1 to 25 of 54
 
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