UMS Evolution Radial Care and Operation
08-08-2013, 08:11 AM
#851
Senior Member
My Feedback: (1)
Join Date: Feb 2010
Location: springhill,
FL
Posts: 192
Likes: 0
Received 0 Likes
on
0 Posts
wow..just saw new 60cc hanger 9 arf corsair !!!! shown in video with 77cc evolution radial...weight between 28 - 31 lbs !!!!! engine pulls plane with no problem. and I was worried about putting it in the 87" Ziroli stearman...WISH CORSAIR WAS AVAIL. 6 MONTHS AGO !!!
08-09-2013, 10:04 AM
#852
My Feedback: (4)
just waiting for the 777 to come in for my 89 in flair Stearman, I have my new 999 Evo on my 93 in corsair and got the third flight on it this weekend I think I finally found the right 2 blade prop a xoar 26x10, black with yellow tips ww2, turns 5000 to 5100 RPM on the ground pulls my corsair pretty good at 36 lbs. now to find a 3 blade at the same RPM would be great.
08-10-2013, 05:25 AM
#855
Senior Member
Join Date: Aug 2009
Location: NSW, AUSTRALIA
Posts: 204
Likes: 0
Received 0 Likes
on
0 Posts
08-13-2013, 02:20 AM
#857
My Feedback: (4)
I sent the engine in for valve lashing and someone there had set the timing wrong, and when I got it back, I put 5 flights on the Corsair and some thing went wrong, the valve keepers came off and. Push rods fell out again, so I sent it back, I thought maybe I over revved the engine, but they said that the timming was apparently off, so they sent me a new engine, so I AM BACK IN THE AIR and so far so good running Great!!
08-15-2013, 11:00 AM
#858
Junior Member
Join Date: Sep 2012
Location: Aosta, ITALY
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Hi everybody! I just received my Evo 7-35 and today I did some break-in on it. The engine starts very easily and feels already reliable, even if it has only 600cc of fuel through it. I only used glow support for starting, and then unplugged it, I never had a cylinder quit, I use 5% nitro and 9% oil.
Vibrations are close to none, and it is quiet even on staight pipes, so far I am very happy with this engine
, I'm just deciding where to put it, I think I'll go for a GP military Stearman as it would be very nice exposed.
Do you have any suggestions of other ARFs suitable for this engine?
I saw the new P-47 .60 from hangar-9 but I guess the shape of the cowl would make it impossible for it to fit without some cylinders sticking out.
For anyone interested in seeing a video of nothing new...here it is
http://www.youtube.com/watch?v=FkYgU8cHP54 Cheers from Italy
Federico
Vibrations are close to none, and it is quiet even on staight pipes, so far I am very happy with this engine
, I'm just deciding where to put it, I think I'll go for a GP military Stearman as it would be very nice exposed.Do you have any suggestions of other ARFs suitable for this engine?
I saw the new P-47 .60 from hangar-9 but I guess the shape of the cowl would make it impossible for it to fit without some cylinders sticking out.
For anyone interested in seeing a video of nothing new...here it is
http://www.youtube.com/watch?v=FkYgU8cHP54 Cheers from Italy
Federico
08-18-2013, 05:28 AM
#860
My Feedback: (128)
Join Date: Dec 2003
Location: Naperville,
IL
Posts: 395
Likes: 0
Received 0 Likes
on
0 Posts
UMS 770 Max Static RPM
Well, at long last I broke in my UMS-Seidel ST-770 and flew it in a giant Telemaster. Break-in sure takes a while (some 30 short runs on the ground for two hours, then 8 flights for another hour). Now flying on 8% oil & ~5% nitro with a 23x8 Turnigy CF prop, and it will loop the 35# Tellly.
Had a question about the max rpm, which my handbook lists as 6,300 rpm. I've been setting the HS needle to give ~5,400 rpm on the ground (static), peak rpm is around 6,000. She seems to want to run more like 5,700 rpm static, though, and I'm contemplating running up there, figuring that the 23x8 won't unload all that much. The advice in the manual (UMS and Evolution) of 10% less rpm than static peak seems a bit conservative in my experience; I tend to set my engines about 300-400 rich off peak.
Anticipating suggestions of more prop pitch, let me say a 23x8 is 96% of the load of a 22x10, and is preferred because we fly off a 200' runway where thrust is valued more than speed (especially on a Telemaster!). Engine is actually destined for a 97" Gee Bee Y, so the idea is to save refining the prop selection for that airframe.
It's just that the engine doesn't quite break out into full "song", if you will. Do folks think another few hundred rpm is safe for the newly broken-in (maybe still breaking-in) engine?
Had a question about the max rpm, which my handbook lists as 6,300 rpm. I've been setting the HS needle to give ~5,400 rpm on the ground (static), peak rpm is around 6,000. She seems to want to run more like 5,700 rpm static, though, and I'm contemplating running up there, figuring that the 23x8 won't unload all that much. The advice in the manual (UMS and Evolution) of 10% less rpm than static peak seems a bit conservative in my experience; I tend to set my engines about 300-400 rich off peak.
Anticipating suggestions of more prop pitch, let me say a 23x8 is 96% of the load of a 22x10, and is preferred because we fly off a 200' runway where thrust is valued more than speed (especially on a Telemaster!). Engine is actually destined for a 97" Gee Bee Y, so the idea is to save refining the prop selection for that airframe.
It's just that the engine doesn't quite break out into full "song", if you will. Do folks think another few hundred rpm is safe for the newly broken-in (maybe still breaking-in) engine?
08-18-2013, 08:57 AM
#862
My Feedback: (4)
Well I have 8 flights on my corsair swinging a 26x10 @ 4800 RPMS and is running good , one problem I am having. Tis when I go for the next flight the bottom two cyl. Has oil filling the glow plugs and it will not clear out, so I have to take them out,blow them out and re light them on my power panel put them back in and get a flight and repeat the proccess for thr next flight,any sugestions?
Last edited by slskn; 08-19-2013 at 04:23 AM. Reason: anyone else having this problem?
08-18-2013, 09:09 AM
#863
Junior Member
My Feedback: (6)
Join Date: Dec 2003
Location: Milan, MN and Brumunddal Norway
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
Hi, take a look at my Fokker Dr. 1 an old Great Planes arf.
http://m.youtube.com/watch?v=KUmfH3YO9As
This is really a great engine, so much value for your money, how about a Ziroli Beach 18 with two 7-35 in it ? I ' m also looking for a model where you can see the engine, no cowling, perhaps a small Swordfish. Has aneyone tried the Great Planes Waco ?
B.T.
http://m.youtube.com/watch?v=KUmfH3YO9As
This is really a great engine, so much value for your money, how about a Ziroli Beach 18 with two 7-35 in it ? I ' m also looking for a model where you can see the engine, no cowling, perhaps a small Swordfish. Has aneyone tried the Great Planes Waco ?
B.T.
08-18-2013, 09:40 AM
#865
Junior Member
Join Date: Sep 2012
Location: Aosta, ITALY
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Hi, take a look at my Fokker Dr. 1 an old Great Planes arf.
http://m.youtube.com/watch?v=KUmfH3YO9As
This is really a great engine, so much value for your money, how about a Ziroli Beach 18 with two 7-35 in it ? I ' m also looking for a model where you can see the engine, no cowling, perhaps a small Swordfish. Has aneyone tried the Great Planes Waco ?
B.T.
http://m.youtube.com/watch?v=KUmfH3YO9As
This is really a great engine, so much value for your money, how about a Ziroli Beach 18 with two 7-35 in it ? I ' m also looking for a model where you can see the engine, no cowling, perhaps a small Swordfish. Has aneyone tried the Great Planes Waco ?
B.T.
Today I ran the engine for another 600cc tank (the 3rd one) and closed the HS needle a bit (now it is 2 turns out from fully closed), it spins a MenzS 18x8 at 7100 rpm, with idle solid at 1400 rpm (methinks the low end needle is on the rich side, but I'll leave it there for now). I was a bit scared of over-revving it as Evolution states rpm range as 1000-6300, what do you think?
08-22-2013, 10:36 AM
#867
Senior Member
Hi all radial engine friends.
I have repaired my 7-35, new type of carburetor and new bearings etc..
I mounted engine for a test drive.
engine va a disaster to drive, when I pull down at idle and will shut down
so would rise the speed.
I have found the problem but you may have to consider a time
I will return in a few days
Lars
I have repaired my 7-35, new type of carburetor and new bearings etc..
I mounted engine for a test drive.
engine va a disaster to drive, when I pull down at idle and will shut down
so would rise the speed.
I have found the problem but you may have to consider a time
I will return in a few days
Lars
08-23-2013, 12:37 PM
#871
My Feedback: (128)
Join Date: Dec 2003
Location: Naperville,
IL
Posts: 395
Likes: 0
Received 0 Likes
on
0 Posts
Needle Bearing Replacement
Anyone ever replace the needle bearing on the master rod?
I've come by a used Evolution 7-35 that has quite a bit of conrod slop. Taking the clip and washer off the crankpin, one can see the pin moving around inside the bearing as the crank is turned. The other crank/cam bearings seem fine, smooth with no play.
I'm thinking if I remove the front case, the cam ring and crank will all come off in one piece, leaving the crankcase, with the cylinders, pistons & rods intact. Heat the crankcase to something north of 375 F to pull out the bearing and replace it, or maybe just use a torch on the master rod to minimize heating the whole works (if it's good enough for Clarence Lee, why not?). Does that sound reasonable, or is there a better approach? Apart from just mailing it in to Horizon, that is?
I've come by a used Evolution 7-35 that has quite a bit of conrod slop. Taking the clip and washer off the crankpin, one can see the pin moving around inside the bearing as the crank is turned. The other crank/cam bearings seem fine, smooth with no play.
I'm thinking if I remove the front case, the cam ring and crank will all come off in one piece, leaving the crankcase, with the cylinders, pistons & rods intact. Heat the crankcase to something north of 375 F to pull out the bearing and replace it, or maybe just use a torch on the master rod to minimize heating the whole works (if it's good enough for Clarence Lee, why not?). Does that sound reasonable, or is there a better approach? Apart from just mailing it in to Horizon, that is?
08-23-2013, 04:44 PM
#872
Junior Member
Join Date: Aug 2013
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
Push Rod Question
Ok, I've been lurking for 5 months and just bought a used 7-35 which arrived today. Somehow during transit, 9 of the pushrods fell out and 4 of the cam followers/lifters fell out. Is this normal to fall out? Now I know on car engines keeping these in their proper up down / locations would be important. Do I start over with a new set or just reinstall?
Final question (I expect to get flamed on this) one of the push rods has about 0.015 bend/run out on it. Straighten, leave alone or replace?
Final question (I expect to get flamed on this) one of the push rods has about 0.015 bend/run out on it. Straighten, leave alone or replace?
08-23-2013, 05:30 PM
#873
My Feedback: (128)
Join Date: Dec 2003
Location: Naperville,
IL
Posts: 395
Likes: 0
Received 0 Likes
on
0 Posts
They fall out often in shipment, Cattledog, no big deal. Just put them back. What is important is to set the valve lash (gap), once the engine is on a plane and you're getting close to flying it. These engines have a cam ring, and when you set each valve you need to next check it at two other positions on the cam ring. Just make sure there is always a gap, so the valve is sure to close. There is a post a while back that describes how to do this, basically you find the next cam by turning the prop through two rotations. Once flying I've never had them fall out.
I wouldn't worry about the bent pushrod, either. If need be, you can purchase a set of them and cam followers for something like $3 at Phil's Hobby Shop (Ft Wayne).
I wouldn't worry about the bent pushrod, either. If need be, you can purchase a set of them and cam followers for something like $3 at Phil's Hobby Shop (Ft Wayne).
Last edited by redball8; 08-23-2013 at 05:33 PM.
08-24-2013, 09:54 AM
#874
Junior Member
Join Date: Aug 2013
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
thank you REDBALL - I don't know if this is of interest but dry Methanol can be purchased at the following shops. Some will ship too. Current average is $3.70 per gallon.
Alabama
Bessemer Petroleum
Bessemer, AL
(205) 424-2970
Alaska
Arizona
Dons Hot Rod Shop
2811 N. Stone Ave.
Tucson, AZ 85705
(520) 884-8892
Speedway Race Fuels
2300 W. Broadway RD
Phoenix, AZ 85041
(602) 276-9250
Arkansas
Centerville Dragway
Track is 11 miles south of Russellville, Arkansas . Take Highway 7 south to Centerville , then go west on Highway 154 for 1 mile.
Simons Petroleum
Industrial Road
Clarksville, AR
Take 58 exit off I-40, go north 1 block to Industrial Road turn right just past Johnson Chevrolet Dealership.
California
ERC Racing Fuel
610 East Lewelling Blvd.
San Lorenzo, CA 94580
(510) 276-9334
Sacramento Raceway
5305 Excelsior Road
Sacramento, CA 95827
(916) 366-7378
Socal Performance
9723 Washburn Road
Downey, CA 90241
(562) 862-9122
Teegarden Motorsports Specialties
11383 Pyrites Way
Rancho Cordova, CA 95670
(916) 638-7223 (RACE)
Fax: (916) 638-2885
Colorado
AAI racing
5985 Lamar
Arvada, CO 80003
(303) 422-3571
Bowers Performance Racing Engines
117 Smokey Street
Fort Collins, CO 80525
(970) 226-6040
Cox Oil CO.
555 E 8th St.
Greeley, CO 80631
(970) 352-9208
(800) 660-2604
Lanier's Speed Shop
106 Pueblo Av
Colorado Springs, CO 80903 - 2118
(719) 633-1378
Connecticut
Grasmere Sunoco
Fairfield CT
New England Racing Fuel
John Holland / Mike Joy
271 Spielman Highway
Burlington, CT 06013
(860) 673-9555
Delaware
Snookies Speed Shop
Milton , DE
(302) 684-8466
Florida
American Motorsports
4130 North Orange Blossom Trail
Orlando, FL 32804
(407) 290-6565
www.americanmotorsports.net
Bradenton Motorsport Park
21000 S.R. 64
Bradenton, FL 34202
(941) 748-1320
http://www.bradentonmotorsports.com
Hole Shot Engineering
6584 50th Ave N
St. Petersburg, FL
(727) 546-3541
Johnson's Performance Ent.
4954 Fruitville Rd.
Sarasota, FL 34232
(941) 378-2693
Georgia
Green Flag Automotive
2308 Jay Cee Shack Road
Valdosta, GA 31602
(229) 244-1624
(Located in South Georgia)
Hawaii
Idaho
Illinois
Cady Oil Company
5023 N. Galena Rd.
Peoria Heights, IL 61616
(309) 688-2111
E&R Automotive Machine
205 W. North Ave.
Villa Park, IL
(630) 279-5464
www.enrracing.com
Indiana
Lowes Speed Shop
Kokomo , IN ( Northern Indiana)
(765) 452-5955
Tom Jones Sales & Racing
3627 Washington St
Waukegan, IL 60085
(847) 623-3210
VP Racing
PO Box 3202
Terre Haute, IN 47803
(812) 232-7253
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Capitol Raceway
Crofton, MD
www.capitolraceway.com
Cecil County Raceway
Maryland
Maryland International Raceway "MIR" (Bud's Creek)
Massachusetts
Michigan
Briner Oil Co.
325 Beck St.
Jonesville, MI 49250
(800) 451-4191
(517) 849-2144
Fax (517) 849-2143
Corrigan Oil Company
744 East South Street
Jackson, MI 49203
(517) 937-4061
Minnesota
Mississippi
Missouri
McMurtry’s Automotive
3204 B. Ave.
Gulfport, MS 39507
(228) 863-4139
Montana
Nebraska
Nevada
New Hampshire
New Jersey
A-1 Racing Specialties Inc
180 E. Railway Ave
Paterson, NJ 07503
(800) 783-2262
(973) 684-7755
Atco Raceway
Atco, NJ ( South Jersey )
http://www.atcorace.com/index2.shtml
Englishtown Raceway
Oldbridge, NJ ( Central Jersey)
http://etownraceway.com/
New Mexico
New York
No Limit
65 Montauk Hwy
Bluepoint, NY 11715
631-363-8659
www.nolimitmotorsport.com
[email protected]
Contact is Steve
North Carolina
North Dakota
Ohio
Norwalk Race Park
1300 State Rt.18
Norwalk, OH
(419) 668-5555
Oklahoma
Grand Prix Auto Aports
Tulsa, OK
(918) 836-8487
Oregon
Tarr Chemicals
2429 N Borthwick Ave
Portland, OR 97227
(503) 288-5294
Pennsylvania
Sunoco Race Fuels
P.O.Box 1226
Linwood, PA 19061
(800) RACE GAS (722-3427)
Fax (610) 859-1643
www.racegas.com
[email protected]
Ships only.
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Conley's Performance Plus
1443-A Aldine Bender
Houston, TX 77032
Craig Caulk Racing Heads
115 Avenue D
South Houston, TX 77587
(713) 947-6787
High Performance Fuels and Additives
2476 Bolsover Suite 211
Houston, TX 77005
(800) 834-0202
[email protected]
www.hiperfuels.com
Ships as well
Houston Raceway Park
2525 FM 565 South
Baytown, Texas
Smiley's Racing
2017 Peachtree Rd.
Balch Springs, TX 75180
Near Dallas
Toronto, Canada
ETD Racing in Newmarket
Toronto, Canada
(905) 953-9260
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
NVR Racing
5161 N 124th St
Butler, WI 53007
(262) 781-5252
Alabama
Bessemer Petroleum
Bessemer, AL
(205) 424-2970
Alaska
Arizona
Dons Hot Rod Shop
2811 N. Stone Ave.
Tucson, AZ 85705
(520) 884-8892
Speedway Race Fuels
2300 W. Broadway RD
Phoenix, AZ 85041
(602) 276-9250
Arkansas
Centerville Dragway
Track is 11 miles south of Russellville, Arkansas . Take Highway 7 south to Centerville , then go west on Highway 154 for 1 mile.
Simons Petroleum
Industrial Road
Clarksville, AR
Take 58 exit off I-40, go north 1 block to Industrial Road turn right just past Johnson Chevrolet Dealership.
California
ERC Racing Fuel
610 East Lewelling Blvd.
San Lorenzo, CA 94580
(510) 276-9334
Sacramento Raceway
5305 Excelsior Road
Sacramento, CA 95827
(916) 366-7378
Socal Performance
9723 Washburn Road
Downey, CA 90241
(562) 862-9122
Teegarden Motorsports Specialties
11383 Pyrites Way
Rancho Cordova, CA 95670
(916) 638-7223 (RACE)
Fax: (916) 638-2885
Colorado
AAI racing
5985 Lamar
Arvada, CO 80003
(303) 422-3571
Bowers Performance Racing Engines
117 Smokey Street
Fort Collins, CO 80525
(970) 226-6040
Cox Oil CO.
555 E 8th St.
Greeley, CO 80631
(970) 352-9208
(800) 660-2604
Lanier's Speed Shop
106 Pueblo Av
Colorado Springs, CO 80903 - 2118
(719) 633-1378
Connecticut
Grasmere Sunoco
Fairfield CT
New England Racing Fuel
John Holland / Mike Joy
271 Spielman Highway
Burlington, CT 06013
(860) 673-9555
Delaware
Snookies Speed Shop
Milton , DE
(302) 684-8466
Florida
American Motorsports
4130 North Orange Blossom Trail
Orlando, FL 32804
(407) 290-6565
www.americanmotorsports.net
Bradenton Motorsport Park
21000 S.R. 64
Bradenton, FL 34202
(941) 748-1320
http://www.bradentonmotorsports.com
Hole Shot Engineering
6584 50th Ave N
St. Petersburg, FL
(727) 546-3541
Johnson's Performance Ent.
4954 Fruitville Rd.
Sarasota, FL 34232
(941) 378-2693
Georgia
Green Flag Automotive
2308 Jay Cee Shack Road
Valdosta, GA 31602
(229) 244-1624
(Located in South Georgia)
Hawaii
Idaho
Illinois
Cady Oil Company
5023 N. Galena Rd.
Peoria Heights, IL 61616
(309) 688-2111
E&R Automotive Machine
205 W. North Ave.
Villa Park, IL
(630) 279-5464
www.enrracing.com
Indiana
Lowes Speed Shop
Kokomo , IN ( Northern Indiana)
(765) 452-5955
Tom Jones Sales & Racing
3627 Washington St
Waukegan, IL 60085
(847) 623-3210
VP Racing
PO Box 3202
Terre Haute, IN 47803
(812) 232-7253
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Capitol Raceway
Crofton, MD
www.capitolraceway.com
Cecil County Raceway
Maryland
Maryland International Raceway "MIR" (Bud's Creek)
Massachusetts
Michigan
Briner Oil Co.
325 Beck St.
Jonesville, MI 49250
(800) 451-4191
(517) 849-2144
Fax (517) 849-2143
Corrigan Oil Company
744 East South Street
Jackson, MI 49203
(517) 937-4061
Minnesota
Mississippi
Missouri
McMurtry’s Automotive
3204 B. Ave.
Gulfport, MS 39507
(228) 863-4139
Montana
Nebraska
Nevada
New Hampshire
New Jersey
A-1 Racing Specialties Inc
180 E. Railway Ave
Paterson, NJ 07503
(800) 783-2262
(973) 684-7755
Atco Raceway
Atco, NJ ( South Jersey )
http://www.atcorace.com/index2.shtml
Englishtown Raceway
Oldbridge, NJ ( Central Jersey)
http://etownraceway.com/
New Mexico
New York
No Limit
65 Montauk Hwy
Bluepoint, NY 11715
631-363-8659
www.nolimitmotorsport.com
[email protected]
Contact is Steve
North Carolina
North Dakota
Ohio
Norwalk Race Park
1300 State Rt.18
Norwalk, OH
(419) 668-5555
Oklahoma
Grand Prix Auto Aports
Tulsa, OK
(918) 836-8487
Oregon
Tarr Chemicals
2429 N Borthwick Ave
Portland, OR 97227
(503) 288-5294
Pennsylvania
Sunoco Race Fuels
P.O.Box 1226
Linwood, PA 19061
(800) RACE GAS (722-3427)
Fax (610) 859-1643
www.racegas.com
[email protected]
Ships only.
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Conley's Performance Plus
1443-A Aldine Bender
Houston, TX 77032
Craig Caulk Racing Heads
115 Avenue D
South Houston, TX 77587
(713) 947-6787
High Performance Fuels and Additives
2476 Bolsover Suite 211
Houston, TX 77005
(800) 834-0202
[email protected]
www.hiperfuels.com
Ships as well
Houston Raceway Park
2525 FM 565 South
Baytown, Texas
Smiley's Racing
2017 Peachtree Rd.
Balch Springs, TX 75180
Near Dallas
Toronto, Canada
ETD Racing in Newmarket
Toronto, Canada
(905) 953-9260
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
NVR Racing
5161 N 124th St
Butler, WI 53007
(262) 781-5252