Oil-less compressor racket...any fixes?? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Garage - Tools
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 01-23-2008, 07:21 PM
bentwings's Avatar
bentwings
 
Last photo:
Join Date: May 2002
Location: St.Paul, Minn
Age: 72
Posts: 1,786
Wiki Edits: 0

Thanks: 0
Thanked 13 Times in 12 Posts
The PW R 2800 is a double row of 9 cylinders used in most of the radial fighters and some bombers of WW 2. It was from about 1800hp in the early model to 2400 hp in the later models. These were 18 cylinders 2800 cu in.

The 4360 "corn cob" was 4 rows of 7. 28 cylinders and made up to around 3000 hp. These were used in the F2G Corsair and the F8F Bearcat.

The plane in the video is an F4U-5 Corsair from the Korean War era. It has an R-2800 and about 2800 hp and 3000 on war emergency. It was probably the best ground support plane ever built. They were even used in Viet Nam. It also is the subject of my next giant scale r/c plane. 96 inch wingspan and 35 pounds, 8 hp, 24 inch prop.

These P & W engines were a real hemi and incredibly tough. They could continue running with several cylinders shot off and bullet holes in some of the others. The Corsair carried 50 gallons of oil so what didn't leak out first could be used to pour out the bullet holes. haha That's what my FIL who flew them said.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 01-23-2008, 07:55 PM
AntnyL's Avatar
Registered User
 
Last photo:
Join Date: Aug 2007
Location: New York
Posts: 414
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Build a 5-sided wooden or cardboard box ("acoustic silencer"), a bit larger than the compressor rig and put it over the thing with the open end facing down, a few inches off the floor (for air inlet, and to get the hose/power line through). Line the interior faces of the box with open-faced insulation or carpet matting to help dissipate the sound pressure. That should make it bearable.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 01-24-2008, 07:30 AM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,908
Wiki Edits: 0

Thanks: 0
Thanked 6 Times in 6 Posts
Quote:
Originally Posted by bentwings
They were even used in Viet Nam.

Corsairs in Vietnam, I did not know that!

It sure would be interesting to know how far piston technology would have developed if the jet age had of held off a few more years.
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 01-24-2008, 07:55 AM
F&J F&J is offline
Registered User
 

Last journal entry: 32 Ford cabriolet conversion/windshield
Last photo:
Join Date: Mar 2007
Location: Connecticut
Age: 62
Posts: 1,571
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Build a 5-sided wooden or cardboard box ("acoustic silencer"), a bit larger than the compressor rig and put it over the thing with the open end facing down, a few inches off the floor (for air inlet, and to get the hose/power line through). Line the interior faces of the box with open-faced insulation or carpet matting to help dissipate the sound pressure. That should make it bearable.
I'll make some sort of box asap. I'm overwhelmed in trying to convert this former 25x90 "furniture store"-before that it was a "pottery kiln"...before that the foundation was for a "chicken coop" I also have a spare good foundation that must be 110 feet! ...I don't think I'll live long enough to build on it though.

-I just conquered the 1940 LP gas furnace yesterday...put on a attic ventilaton fan to replace the burned original fan motor. Then I figured out how to wire the fan to the orig sysyem so the fan goes on & off as the burner temps dictate...heck I even have the wall thremostat working now

We hacked into the side for a 7x9 garage door to get my cars & big tools in. Today I will add door seals & w-strips. We put up a 6 mil plastic room divider so I can heat 25x38 for now. We tore up the wood sleeper floor in that part; the cement is not the best as far as level in spots. We removed one center "carrying beam post" to get the cars in. Those posts only hold up the ceiling system; they do not support the roof at all.

I've been adding cold start 8' floresents, added a breaker box, wiring for Mig, Tig & compressor. Some shelving too. Plus fighting cold temps. It's getting there..I guess..

Still need to clean out a little of my last shop PLUS my first shop at the ex's

Quote:
Corsairs in Vietnam, I did not know that!
Me neither, and they were built in my state, as well as the engines. I did read years ago that P-51s were used in the early Viet Nam years?
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 01-24-2008, 08:08 AM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,908
Wiki Edits: 0

Thanks: 0
Thanked 6 Times in 6 Posts
Quote:
Originally Posted by F&J
Me neither, and they were built in my state, as well as the engines. I did read years ago that P-51s were used in the early Viet Nam years?

Wow! did not know that either!

The Skyraider was legendary in Vietnam but I did not know about the Corsairs and Mustangs. I have to wonder if there would not be a place for those things today? Naw, probably not but it sure would be fun to see a few new ones around!
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 01-24-2008, 08:26 AM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,811
Wiki Edits: 0

Thanks: 1
Thanked 82 Times in 69 Posts
When I first arrived in Vietnam I was assigned to a C130 crew that made regular runs to outlying bases. I believe it was the air base at Hue that had a Corsair on a pedestal at the base entrance. I was really surprised when I saw it and the fairly good condition it was in. That was in early 1971. I returned to that same air base a few months later and the Corsair was gone. I assumed some aircraft restoration outfit got hold of it. Wish I would have copied down the serial number, I would love to learn where it is today.

A26 Invaders (Air Force designation B26) also operated in Vietnam. These were modified by an outfit by the name of On Mark for service in Vietnam.

Vince
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 01-24-2008, 08:31 AM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,811
Wiki Edits: 0

Thanks: 1
Thanked 82 Times in 69 Posts
Quote:
Originally Posted by F&J
I did read years ago that P-51s were used in the early Viet Nam years?
Yep, I think they were operated by the French very early in their Indochina campaign, but fell out of favor due to their vulnerability to ground fire which was much more accurate and intense than WWII.

Vince
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 01-24-2008, 08:57 AM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,908
Wiki Edits: 0

Thanks: 0
Thanked 6 Times in 6 Posts
That explains a lot, I was thinking the US had retired all the Corsairs and Mustangs after Korea. Todays aircraft is simply mind boggling but those old piston war horses were the true "Hot Rods" that represent an era and type of close and personal combat that will never be seen again.
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 01-24-2008, 09:12 AM
bentwings's Avatar
bentwings
 
Last photo:
Join Date: May 2002
Location: St.Paul, Minn
Age: 72
Posts: 1,786
Wiki Edits: 0

Thanks: 0
Thanked 13 Times in 12 Posts
The Pratt & Whitney lived on for a couple decades after WW2 in the Boeing DC airliners. The Constallation was probably the queen of the sky back in the early 60's. The B-29 and B-36 had variants. There are still DC-3 flying regularly and a lot of T-6 and T-28s.

A remarkable motor for the time. Were it built today with the CNC technology and metal tech we have it would be really something. It still would not be able to compete with the turbine. I was at the Oshgosh airshow last year and there was a Honda bus jet engine there for the new level of bus jets. It weighed less than 500 pounds 5000+ hr between majors and virtually no maintenance between. About $500k each. The plane goes 550 mph cruise. at 35,000 feet. The P&W at its height was probably around 500 hrs at best.
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 01-24-2008, 09:42 AM
bentwings's Avatar
bentwings
 
Last photo:
Join Date: May 2002
Location: St.Paul, Minn
Age: 72
Posts: 1,786
Wiki Edits: 0

Thanks: 0
Thanked 13 Times in 12 Posts
I still find it hard to imagin jumping into a 2000 hp flying hotrod, taking off and flying 4-6 hours looking for trouble and ready to dish it out, getting shot at, probably a few bullet holes in the plane, then coming home only to have to spot land on a couple hundred feet of aircraft carrier in rough seas. Then doing it again the next day.

Now about these @#$% air compressors....
We can build the best aircraft in the world but we can't even build a 2 hp air compressor that you don't have to wear ear protection around. What gives??? haha Not even hotrodders have been able to make the things livable.
Reply With Quote Quick reply to this message
  #26 (permalink)  
Old 01-24-2008, 10:29 AM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,908
Wiki Edits: 0

Thanks: 0
Thanked 6 Times in 6 Posts
Probably not the case with oil-less air compressors, those things are just inherently noisy, but I remember reading some time back that things like lawn mowers, vacuum cleaners, power saws, etc are purposely made to be noisy or at least no effort is made to quite them. Why would this be? Because they would not sell very well if they ran quietly! More than one marketing study has shown that if these and some other items ran quietly, and it would be easy to make a lawn mower for instance that would be little louder than the whirring of the blade, consumers relate the quiet operation to low power. A vacuum cleaner that runs quietly would have little cleaning power in the minds of most consumers but one that is so loud you can't even think around it is bound to be powerful, Right? The people running the manufacturing sector learned a long time ago that if you want sales to fall just make your product run quiet!
Reply With Quote Quick reply to this message
  #27 (permalink)  
Old 01-24-2008, 12:12 PM
speedydude's Avatar
Registered Cruiser
 
Last photo:
Join Date: Apr 2007
Location: Sedona, AZ
Posts: 271
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
[QUOTE=bentwings]The PW R 2800 is a double row of 9 cylinders used in most of the radial fighters and some bombers of WW 2. It was from about 1800hp in the early model to 2400 hp in the later models. These were 18 cylinders 2800 cu in.

The 4360 "corn cob" was 4 rows of 7. 28 cylinders and made up to around 3000 hp. These were used in the F2G Corsair and the F8F Bearcat.{Quote}



F2G........huh, I thought you might have the answer to that one. Wasn't it also nicknamed the "flying cigar" as that particular engine made it look even longer???

Listening to a guy talk who actually flew these and P-51's, you could only apply part throttle while on the runway taking off. The torque from full throttle would ground loop you every time. Day~um, that's somethin I'd like to fly.

Oh yea, the compressor.........I would have to disagree OLDRED. I would buy that quiet compressor in a minute. Then I could actually hear the music while working.
Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 01-24-2008, 01:15 PM
F&J F&J is offline
Registered User
 

Last journal entry: 32 Ford cabriolet conversion/windshield
Last photo:
Join Date: Mar 2007
Location: Connecticut
Age: 62
Posts: 1,571
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Hope the mods don't lock the thread for "O/T"

To keep it legal, on topic: I plan on trying to swap a used crank into my damaged 4-5? hp twin Sears with parts I have here on hand

Now,,,back off topic A friend of mine who deals on Ebay and also scrap & surplus, has TWO UH-1 Hueys in his back yard! They were bought for scrap and are minus engines, etc....but they sure look cool. To quote him "both are short-fuselage gunships" and "both have Viet Nam combat histories" How cool is that

I WILL take some pics next visit..
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 01-24-2008, 11:06 PM
bentwings's Avatar
bentwings
 
Last photo:
Join Date: May 2002
Location: St.Paul, Minn
Age: 72
Posts: 1,786
Wiki Edits: 0

Thanks: 0
Thanked 13 Times in 12 Posts
lLst summer in an effort to quiet our HF POS down I draped two big beach towels over it and surprising it knocked off quite a bit of noise. Since it only runs occasionally it was livable. It was actually better than the box with insulation that I made previously.

I also found the air intake to be particularly noisy. Unfortunately ours has some wierd thread. it is undoubtely a metric of some sort but I sure couldn't find a match in my gages. In the spring I'm going to get a tap that is close and tap the thing out to someting I can get and build an intake muffler. Then I'm goin gto go after the box idea again but this time I'll try at least 3 different weight of insulation including a lead layer. This will be sealed except for a cooling vent right at the cylinder.
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 01-24-2008, 11:47 PM
dinger's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Health and safety in the shop or garage
Last journal entry: 36 Ford painting
Last photo:
Join Date: Jan 2002
Location: Visalia, Ca.
Age: 61
Posts: 2,698
Wiki Edits: 1

Thanks: 97
Thanked 92 Times in 58 Posts
Quote:
Originally Posted by bentwings
lLst summer in an effort to quiet our HF POS down I draped two big beach towels over it and surprising it knocked off quite a bit of noise. Since it only runs occasionally it was livable. It was actually better than the box with insulation that I made previously.

I also found the air intake to be particularly noisy. Unfortunately ours has some wierd thread. it is undoubtely a metric of some sort but I sure couldn't find a match in my gages. In the spring I'm going to get a tap that is close and tap the thing out to someting I can get and build an intake muffler. Then I'm goin gto go after the box idea again but this time I'll try at least 3 different weight of insulation including a lead layer. This will be sealed except for a cooling vent right at the cylinder.
I wonder how the homemade lizard skin would work as a soundshield. Time for an experiment?
Reply With Quote Quick reply to this message

Recent Garage - Tools posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
oil change- step by step instructions for women and men Fireball Hotrodders' Lounge 38 08-30-2008 07:39 AM
Oil pressure prob. (unusual) newmexicosaint Engine 10 12-27-2006 05:55 PM
Oil Change THX_138 Hotrodders' Lounge 25 12-20-2006 03:01 PM
SBC low oil press but no rocker arm noise? myclone614 Engine 14 01-23-2006 04:16 PM
Low idle oil pressure chuckellison Engine 4 03-03-2003 07:20 AM


All times are GMT -6. The time now is 07:09 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.