Notices
Glow Engines Discuss RC glow engines

Glow head brotherhood.

Old 05-19-2015, 10:28 AM
  #1251  
buzzard bait
 
Join Date: Jan 2003
Location: Ithaca, NY
Posts: 3,286
Likes: 0
Received 5 Likes on 5 Posts
Default

I don't understand why the old K&b 61 could not be ported for 13x5 props too, that's a good prop for the HP 61 PDP which is based on it. Maybe it's just that Mr. Lee only does porting for high rpm applications. Apparently the Twister is not better on small props, but it is better on large props.

Yes, the Sportster can turn a 13x5, but not nearly as well as a Twister 61, and it is much heavier. I hoped my K&B 61 could be made to run more like a Twister, but apparently that is not what is offered.

Jim
Old 05-19-2015, 11:27 AM
  #1252  
aspeed
 
aspeed's Avatar
 
Join Date: Jul 2011
Location: Ruthven, ON, CANADA
Posts: 3,460
Likes: 0
Received 7 Likes on 7 Posts
Default

I am not familiar with those motors, but am pretty sure they are all 1970's technology, so however well made they are, you can only expect so much. They were fine, and even hard to beat in their day though.
Old 05-19-2015, 12:31 PM
  #1253  
Sport_Pilot
 
Sport_Pilot's Avatar
 
Join Date: Jan 2002
Location: Acworth, GA
Posts: 16,916
Likes: 0
Received 1 Like on 1 Post
Default

but am pretty sure they are all 1970's technology,
Not much difference in 1970's tech except maybe more brands put O rings around needles. I think the best motors were built in the 80's and after that the manufactures turned their attention toward making them cheaper. Thus the nickel pated sleeve peeling nightmares.
Old 05-19-2015, 01:25 PM
  #1254  
rcguy59
My Feedback: (8)
 
rcguy59's Avatar
 
Join Date: Jul 2008
Location: tacoma, WA
Posts: 1,490
Likes: 0
Received 1 Like on 1 Post
Default

What pretty much killed true chrome-plated bores was the fact that hard-chrome plating produces highly toxic and hazardous byproducts that are expensive to legally dispose of anywhere but mainland China. In order to compete on price, O.S. was forced to abandon true chrome for their sport engines, to our detriment. Treated properly, ABL engines aren't bad, but I'll take chrome anytime.
Old 05-19-2015, 01:42 PM
  #1255  
aspeed
 
aspeed's Avatar
 
Join Date: Jul 2011
Location: Ruthven, ON, CANADA
Posts: 3,460
Likes: 0
Received 7 Likes on 7 Posts
Default

From what I remember in the 70's (man) ABC and schneurle was just a new thing. PDP just started and was quickly outdated in a couple of years. My Rossi had a steel piston cyl. and the ABC was an option. This was the late 70's. K&B .40 was the ruler in pylon for instance, until the schneurle came out. Then it was nothing, when even K&B had to update to schneurle. We stopped chroming at work when the cost of dumping exceeded the cost of buying it, (and you couldn't just dump it in the back field) Even the cleaning solutions are hard to get rid of now. We had huge tanks of heated trichlorethane that must have been dumped somewhere when it was too oily. I remember sticking my head inside the tank to hunt for dropped parts with the smoky haze. Good times? The 80's had some nice designs, and many different companies, then it was all CNC stuff to be more profitable, and then naturally the little guys with the standard machines thinned out. Really, now the motors are pretty good, and cost effective, even with the nickel and crappy bearings. It would have been unheard of to have any warranty more than 30 days then. Now 20 gallons of fuel is considered normal before new bearings are needed, and there are still complaints about bearing quality.

Last edited by aspeed; 05-19-2015 at 01:47 PM.
Old 05-19-2015, 02:23 PM
  #1256  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,409
Received 76 Likes on 69 Posts
Default

Originally Posted by rcguy59
What pretty much killed true chrome-plated bores was the fact that hard-chrome plating produces highly toxic and hazardous byproducts that are expensive to legally dispose of anywhere but mainland China. In order to compete on price, O.S. was forced to abandon true chrome for their sport engines, to our detriment. Treated properly, ABL engines aren't bad, but I'll take chrome anytime.
OS aircraft engines were ABN from nearly the beginning. Their car and boat engines are ABC though - at least the car engines for sure are. They just took the cheap route with the aircraft engines.
Old 05-19-2015, 09:08 PM
  #1257  
Sport_Pilot
 
Sport_Pilot's Avatar
 
Join Date: Jan 2002
Location: Acworth, GA
Posts: 16,916
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by rcguy59
What pretty much killed true chrome-plated bores was the fact that hard-chrome plating produces highly toxic and hazardous byproducts that are expensive to legally dispose of anywhere but mainland China. In order to compete on price, O.S. was forced to abandon true chrome for their sport engines, to our detriment. Treated properly, ABL engines aren't bad, but I'll take chrome anytime.
Like I said they did it to make their engines cheaper.
Old 05-20-2015, 05:42 AM
  #1258  
aspeed
 
aspeed's Avatar
 
Join Date: Jul 2011
Location: Ruthven, ON, CANADA
Posts: 3,460
Likes: 0
Received 7 Likes on 7 Posts
Default

I guess the high volume sport engines are ok with the nickel, unless they get too hot. Still the cost is the same as a "real" motor, and I think they could splurge on chrome.
Old 05-20-2015, 08:31 AM
  #1259  
blw
My Feedback: (3)
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,447
Likes: 0
Received 2 Likes on 2 Posts
Default

I asked Clarence Lee about the rpm ranges of the C.F. Lee PDP engine, and he said that it was an 11,000 rpm engine and should be propped for that rpm. He also cautioned that 11K is the limit mostly due to the crankpin.
Old 05-20-2015, 01:49 PM
  #1260  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,409
Received 76 Likes on 69 Posts
Default

The higher rpm PDP hybrid does have a different crankshaft, so perhaps the regular PDP .61 is better as a lugger and the PDP hybrid is better for go-fast piped applications.

I have a couple HB .61s which are said to be basically a West German version of a K&B .61. Neither of mine are PDP though. One is gonna be used in my Mig-27 Foam target drone plane. Easy starter and good runner albeit the muffler is pretty "barky". I wonder if the K&B variants use a different muffler?
Old 05-20-2015, 06:32 PM
  #1261  
buzzard bait
 
Join Date: Jan 2003
Location: Ithaca, NY
Posts: 3,286
Likes: 0
Received 5 Likes on 5 Posts
Default

A K&B 61 with its stock muffler will wake the dead. That's one reason I'd like to be able to run a larger prop on it. A Bisson muffler might help too.

The 65 Sportster muffler will fit; I don't know if it would help any.
Old 05-20-2015, 07:05 PM
  #1262  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,409
Received 76 Likes on 69 Posts
Default

Originally Posted by buzzard bait
A K&B 61 with its stock muffler will wake the dead. That's one reason I'd like to be able to run a larger prop on it. A Bisson muffler might help too.

The 65 Sportster muffler will fit; I don't know if it would help any.
The sportster muffler is very good at quieting the noise, but on almost any other engine it will likely limit power. But I wouldn't know for sure until I tried it. The sportster engine was designed with that muffler in mind. I didn't see a big gain in rpm running a .65 without the muffler (but I did get an appreciation for hearing protection. I always wear it running engines).
Old 05-25-2015, 09:12 AM
  #1263  
blw
My Feedback: (3)
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,447
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by 1QwkSport2.5r

I have a couple HB .61s which are said to be basically a West German version of a K&B .61. Neither of mine are PDP though. One is gonna be used in my Mig-27 Foam target drone plane. Easy starter and good runner albeit the muffler is pretty "barky". I wonder if the K&B variants use a different muffler?
Tim, I have 2 new stock HB .61s that were given to me. They were from the Army target drone program about 20+ years ago at Auburn University. The only oddity about the engines is they are not bushed like most of the drone engines in that program.
Old 05-25-2015, 12:16 PM
  #1264  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,409
Received 76 Likes on 69 Posts
Default

Originally Posted by blw
Tim, I have 2 new stock HB .61s that were given to me. They were from the Army target drone program about 20+ years ago at Auburn University. The only oddity about the engines is they are not bushed like most of the drone engines in that program.
Barry -

The two HB .61s I have are slightly different. The one that came to be unrun is twin ball raced. The other, though not confirmed, I suspect is ball raced in the rear and a bushing up front. It is said the drone HBs had a rear BB and a bushing in the front that can be removed and a correct sized BB installed. The unrun HB came with an HB carb, the other had no carburetor. I swapped the HB carb and muffler to the used one I suspect as being a drone engine and it throttled poorly. I adjusted the needles quite a bit and never got it to throttle in the midrange well. I'm unsure what's wrong with it but may be the reason I acquired it. It has good compression and turns over pretty smooth.

The pair of Sportster .65s I have are from the most recent drone planes from around '91. One is unrun and the other has about 4-5 gallons through it and runs really sweet with a good carb in it. The drone carbs are junk.
Old 05-27-2015, 11:15 AM
  #1265  
blw
My Feedback: (3)
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,447
Likes: 0
Received 2 Likes on 2 Posts
Default

I'm going to run one of them soon. They may have been run once but I was told they were new and never run. They did have some light traces of castor inside, so who knows. If they ran, it was for only a few minutes. And, they were free.
Old 05-27-2015, 02:01 PM
  #1266  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,409
Received 76 Likes on 69 Posts
Default

Both of mine are Dykes ringed. I have to finish breaking the one in so I can bolt it to my Mig target drone so I can fly it. Need to dump these 1/4 scale servos or trade them so I can get some standard servos for it.
Old 06-29-2015, 12:42 PM
  #1267  
stevegauth30
Thread Starter
 
stevegauth30's Avatar
 
Join Date: Jun 2012
Location: Bristol, CT
Posts: 4,002
Likes: 0
Received 0 Likes on 0 Posts
Default

No glow talk lately, eh? OK, ill bite. Just picked up a pretty sweet little motor. A YS supercharged F120. Completely rebuilt by YS just two months ago. Needs to be broken in still, but will fly soon. The only thing wrong is two broken (or filed) fins. I picked it up for less than the amount on the slip for the rebuild. Cant wait to hear it. Anyone have experience with this engine? Im debating on going back for the 140 he has, but it has a hefty price tag.
Old 06-29-2015, 12:45 PM
  #1268  
stevegauth30
Thread Starter
 
stevegauth30's Avatar
 
Join Date: Jun 2012
Location: Bristol, CT
Posts: 4,002
Likes: 0
Received 0 Likes on 0 Posts
Default

Almost forgot. Here it is.
Attached Thumbnails Click image for larger version

Name:	IMG_20150629_163316.jpg
Views:	38
Size:	453.4 KB
ID:	2106399   Click image for larger version

Name:	IMG_20150629_163350.jpg
Views:	44
Size:	469.8 KB
ID:	2106400  
Old 06-29-2015, 01:36 PM
  #1269  
twistman
My Feedback: (42)
 
Join Date: Nov 2004
Location: Liberty, SC
Posts: 49
Likes: 0
Received 0 Likes on 0 Posts
Default

YS, The best four stroke out there. More power than any four stroke I have ever used. I have been flying them for over 10 years and have never had a dead stick landing.
Old 06-29-2015, 01:44 PM
  #1270  
stevegauth30
Thread Starter
 
stevegauth30's Avatar
 
Join Date: Jun 2012
Location: Bristol, CT
Posts: 4,002
Likes: 0
Received 0 Likes on 0 Posts
Default

While this is my first YS, ive never heard a bad word spoken about them. Do the check valves usually go bad? Or do you get a long time out of one?
Old 06-29-2015, 03:56 PM
  #1271  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,409
Received 76 Likes on 69 Posts
Default

I'm no YS guy, but I will be burning a whole lot of fuel over the 4th weekend. Going with over 3 gallons and hoping to come back empty. Gonna run a .20, .26, .28, .29, .35, .46, and a .56. And my buddy is bringing a 5+HP electric boat. I told him he's a wuss for running all electric gear.
Old 06-29-2015, 04:14 PM
  #1272  
spaceworm
 
Join Date: Mar 2009
Location: Guilford, CT
Posts: 3,950
Received 2 Likes on 2 Posts
Default

Originally Posted by stevegauth30
No glow talk lately, eh? OK, ill bite. Just picked up a pretty sweet little motor. A YS supercharged F120. Completely rebuilt by YS just two months ago. Needs to be broken in still, but will fly soon. The only thing wrong is two broken (or filed) fins. I picked it up for less than the amount on the slip for the rebuild. Cant wait to hear it. Anyone have experience with this engine? Im debating on going back for the 140 he has, but it has a hefty price tag.
Sceptre Flight has a review by Stu Richmond. I tried to cut and paste but couldn't. Just search for Sceptre Flight Engine Tests and it should come up under YS F-120. If not, let me know. I have mine on a 100 inch Hangar 9 J3 Cub. Flies it great, Flawless once you get it adjusted; more to do so because of the regulator and unique plumbing. Most important, I think, is to use 20% oil in fuel, 15-20% nitro.
Sincerely, Richard
AMA 861960
Cub Brotherhood #187; Sig 1/4 (Koverall/dope), H9 100 inch (Gen 1) (Solartex/?), GB Anniv Cub (NIB)
Club Saito #635; Saito 56, 100, 120abc, 130T, 180
YS F 120
P-47 Brotherhood #(applied for)

Attached Thumbnails Click image for larger version

Name:	2014-10-15 10.52.28-3.jpg
Views:	78
Size:	665.2 KB
ID:	2106440  

Last edited by spaceworm; 06-29-2015 at 04:24 PM. Reason: added pic of my YS-F120
Old 11-18-2015, 12:50 PM
  #1273  
FlyerInOKC
My Feedback: (6)
 
FlyerInOKC's Avatar
 
Join Date: Nov 2004
Location: Oklahoma City, OK
Posts: 14,108
Received 263 Likes on 231 Posts
Default

I don't know how I missed this tread. I'm a died in the wool glow user I don't own any engines that don't run on glow fuel. Sign me up!
Old 11-18-2015, 01:24 PM
  #1274  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,409
Received 76 Likes on 69 Posts
Default

Welcome to the club! I think most of us live on nitromethane fumes... LoL! Steve should be by to add you to the list.
Old 11-18-2015, 02:13 PM
  #1275  
stevegauth30
Thread Starter
 
stevegauth30's Avatar
 
Join Date: Jun 2012
Location: Bristol, CT
Posts: 4,002
Likes: 0
Received 0 Likes on 0 Posts
Default

Hey Mikey. Cant believe it took ya this long to find your own kind. Welcome along. Ill have to look back and figure out the last number given. Hey, did you ever find a home for that little engine i sent?

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.