Search found 1330 matches

by Des Moines Boater
Tue Sep 20, 2011 8:00 am
Forum: Airboat Tech
Topic: Aircat w/ VW motor
Replies: 17
Views: 3371

Re: Aircat w/ VW motor

I had two of the Tom Cats. I had the 1600 cc engine and it was a fun little boat. The hull is heavy, not the engine. It would easily get on plane and run 30 mph with one person. The VW engine is easy to work on and you can get engines with more horse power for very little money. http://southernairbo...
by Des Moines Boater
Sun Sep 11, 2011 8:21 am
Forum: Aircraft Power Only
Topic: Airtec starters
Replies: 8
Views: 1054

Re: Airtec starters

Why would you not use a solenoid? The solenoid is just a switch that requires a small amount of juice to close a switch that allows a large amount of juice to go to the starter. My Air-Tec starter has the solenoid built into the starter. So, you don't need an additional solenoid. Automotive starters...
by Des Moines Boater
Fri Sep 09, 2011 9:34 am
Forum: Aircraft Power Only
Topic: fireing order ?
Replies: 5
Views: 801

Re: fireing order ?

The firing order is molded into the engine case near the prop, in front of the number 5 cylinder.
by Des Moines Boater
Sun Sep 04, 2011 8:10 am
Forum: Aircraft Power Only
Topic: Good vs. Bad compression #s on continental e225
Replies: 5
Views: 1116

Re: Good vs. Bad compression #s on continental e225

There is no difference in Lycoming and Continental cylinder numbers. When you do a leak down or compression check on aircraft cylinders, you are checking for a percentage to determain wear. Usually the comparison is against 80 pounds of pressure on each cylinder. If the compression comes back at 80,...
by Des Moines Boater
Wed Aug 31, 2011 12:36 pm
Forum: Aircraft Power Only
Topic: Oil temp on 220 GPU
Replies: 7
Views: 993

Re: Oil temp on 220 GPU

The oil cooler looks to be installed correctly. 180° to 210° is a good temp to help boil off moisture that may be in the oil. I'm lucky to get mine up to 180° after a half hour run. 210° is not excessive but does suggest the engine is getting hotter than you want. What are you cylinder head temps wh...
by Des Moines Boater
Tue Aug 23, 2011 2:09 pm
Forum: Aircraft Power Only
Topic: C85 problems
Replies: 11
Views: 905

Re: C85 problems

Sounds like the fuel pump is too strong for that carburetor. You should only have 4 to 5 pounds pressure on the pump. 7 PSI will be enough to push the needle off the seat and cause it to leak gas. With the pump on, the float should hold the needle on the seat. If it doesn't then your pump is putting...
by Des Moines Boater
Tue Aug 23, 2011 11:26 am
Forum: Aircraft Power Only
Topic: Tapping sound
Replies: 9
Views: 1003

Re: Tapping sound

The internal counter weights will make a noise at lower rpms which is normal. If it sounds like it is coming from one cylinder it could be a hydraulic lifter going bad. Pull a valve cover and check the valve clearance. You won't even have to take a cylinder off to replace a bad one.
by Des Moines Boater
Fri Aug 19, 2011 11:10 am
Forum: Automotive Power Only
Topic: run dry
Replies: 11
Views: 1414

Re: run dry

Jeff, I have a 13 foot Laser Hull with slick bottom and a 220 GPU with a Sensenich Q prop and I can't run dry on sand. If you are having trouble getting on plane in deep water, then it sounds like you need more horsepower. A gear or belt drive with a Chevy V-8 may be what you need to get that kind o...
by Des Moines Boater
Fri Aug 19, 2011 10:05 am
Forum: Aircraft Power Only
Topic: Magneto timing Frustration
Replies: 9
Views: 1442

Re: Magneto timing Frustration

Did you insert the timed magneto at TDC or when the engine was at 25° before TDC on the compression stroke? Set the red tooth in the magneto and them insert the magneto when the engine is at 25° BTDC. If it doesn't have enough room to time properly, you may need to pull the magneto and set it one to...
by Des Moines Boater
Thu Aug 18, 2011 9:21 am
Forum: Airboat Tech
Topic: prop pitch for a 110 hp corvair iceboat
Replies: 12
Views: 1295

Re: prop pitch for a 110 hp corvair iceboat

Just remember that 110 HP is made at 5000 RPM. At 3000 RPM that engine will be very similar to a 65 HP engine. I had one on a homebuilt Pietenpol aircraft. I swaped it for a Continental A-65 and it gave better performance.
by Des Moines Boater
Wed Jul 27, 2011 2:16 pm
Forum: Aircraft Power Only
Topic: Setting impulse mag
Replies: 19
Views: 1176

Re: Setting impulse mag

It sounds like you started correctly but then screwed it up. First find TDC on the compression stroke and not just TDC. Set the timed magneto in at 25° BTDC on the compression stroke. The impulse will click when it is very near or just past TDC. The mags need to click near TDC and then pull the prop...
by Des Moines Boater
Tue Jul 19, 2011 5:52 pm
Forum: Aircraft Power Only
Topic: BUZZ BOX?
Replies: 21
Views: 2030

Re: BUZZ BOX?

RONG RINGS , JAMES you are a constant source of entertainment. I know you mean well.
by Des Moines Boater
Mon Jul 18, 2011 4:22 pm
Forum: Aircraft Power Only
Topic: BUZZ BOX?
Replies: 21
Views: 2030

Re: BUZZ BOX?

JAMES is quick to give information on every subject, but be careful following any of his advice. Sometimes he is correct but you never know. I would go by the manufactures data sheets when in doubt. They usually know more about their engines than JAMES does. The Type Certificate for the O-520 engine...
by Des Moines Boater
Sun Jul 17, 2011 4:27 pm
Forum: Aircraft Power Only
Topic: BUZZ BOX?
Replies: 21
Views: 2030

Re: BUZZ BOX?

Take it to someone who knows how to time the magnetos and they will show you. Why do you have 30° magnetos on an engine that should be timed at 20°? Do you know what the timing should be? Take it to someone who knows that engine and they will show you what you need to know.
by Des Moines Boater
Sun Jul 17, 2011 7:56 am
Forum: Aircraft Power Only
Topic: BUZZ BOX?
Replies: 21
Views: 2030

Re: BUZZ BOX?

You don't actually turn the ignition on. You un-ground the magnetos to make them hot. Pull all the top plugs first. Make sure the engine is on the compression stroke, then find TDC. Mark your flywheel. Now back it off 25° and make another mark on the flywheel. Next set the timing mark on the magneto...
by Des Moines Boater
Fri Jul 01, 2011 9:38 pm
Forum: Aircraft Power Only
Topic: What to do next trouble shooting my BENDIX 20 series mag???
Replies: 20
Views: 2366

Re: What to do next trouble shooting my BENDIX 20 series mag

The points are not the E-gap. Set your points at .018 and follow the instructions below. Internal Mag Timing There are two internal adjustments that must be set correctly for a magneto to operate properly: point gap and "E-gap." The point gap should be set first. To do this, the drive shaft of the m...
by Des Moines Boater
Fri Jun 24, 2011 7:56 am
Forum: Aircraft Power Only
Topic: Retard the timing to help with overheating?
Replies: 25
Views: 1702

Re: Retard the timing to help with overheating?

With the cylinder and oil pressure both in the 20's, it sounds like you need to pull that engine off and have it overhauled.
by Des Moines Boater
Thu Jun 23, 2011 7:52 am
Forum: Aircraft Power Only
Topic: Retard the timing to help with overheating?
Replies: 25
Views: 1702

Re: Retard the timing to help with overheating?

Pull that cylinder and find out what went wrong. 20 pounds is way too low. Do you know how hot your cylinders were getting? Setting the timing wrong isn't going to help anything. Can you find another mechanic to help you out? Let us know what you find.
by Des Moines Boater
Thu Jun 16, 2011 10:19 am
Forum: Aircraft Power Only
Topic: pe60 glass what now??
Replies: 8
Views: 683

Re: pe60 glass what now??

I have a PE-150 on my 13x7 boat. I couldn't imagine a PE-60 getting it on plane. Sounds like you need a bigger engine for that set up or a smaller hull for that engine. You could always go with a direct drive Cadillac engine.
by Des Moines Boater
Sat May 21, 2011 10:18 am
Forum: Airboat Talk
Topic: vid of the imposable
Replies: 17
Views: 1333

Re: vid of the imposable

Come on Des Moines Boater was it really necessary to say all that ??? :violent1: Come on Breath in Breath Out it will be OK :thumbleft: Yes it was. JAMES is my main source for entertainment. You just need to poke a little fun at him once in awhile to stir the pot. He will do the rest. :wink:
by Des Moines Boater
Sat May 21, 2011 9:38 am
Forum: Airboat Talk
Topic: vid of the imposable
Replies: 17
Views: 1333

Re: vid of the imposable

JAMES, the boat you have been trying to sell only has 10 hours according to your add. It's been more than a year since you had the motor rebuilt and now has 10 hours according to your add. How do you wear out the bottom when you only run a boat less than 10 hours? Also, is it necessary for you to co...
by Des Moines Boater
Wed May 18, 2011 10:02 am
Forum: Airboat Tech
Topic: Torque ratings for Continental valve cover bolts
Replies: 8
Views: 1014

Re: Torque ratings for Continental valve cover bolts

Here is a link to a Continental Service bulletin that should have the torque specs for just about everything. If the bolt or screw isn't listed then use the general specification for the size bolt listed at the end of the bulletin. Measure the bolt and not the head to determine the size. http://www....
by Des Moines Boater
Sat Apr 30, 2011 11:08 am
Forum: Airboat Talk
Topic: E-85 made it to g-ville
Replies: 4
Views: 784

Re: E-85 made it to g-ville

Make sure everything it runs through is stainless steel. Your gas mileage will be reduced by at least one third. It is very corrosive. It needs to be at least $1.00 cheaper to make up for its loss in mileage. It makes bunny huggers feel good. The shelf life is very low, so, use it up within a week. ...
by Des Moines Boater
Thu Apr 28, 2011 11:32 am
Forum: Aircraft Power Only
Topic: Lets talk CHT gauges N stuff
Replies: 9
Views: 723

Re: Lets talk CHT gauges N stuff

I monitor all six only because I had the switch left over from other projects. The nice thing with the 6 position switch is that it has long wires with it, so, I didn't need extra wiring to go from the sensor to the panel. A dual gauge is enough. I usually leave my selector on number 4, which is my ...
by Des Moines Boater
Thu Apr 28, 2011 7:57 am
Forum: Aircraft Power Only
Topic: 220 GPU Oil usage
Replies: 8
Views: 1295

Re: 220 GPU Oil usage

Here you go Mike.

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