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RE: 33cc homelite - 5/31/2004 10:16 AM   
Maximus-RCU



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Status: offline 		Give me some dimensions on the engine if someone can, i.e. height from centerline to top of cylinder, width from carb to muffler etc. Do you think it would fly a 77" span 12 lb. Extra 300 ok?


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RE: 33cc homelite - 5/31/2004 5:34 PM   
captinjohn


 

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Status: offline 		It may be too heavy? What is the total sqare inches of the wing. It will fly it...but with too small of a wig area...you will always have to keep her moving on the fast side. Let us know more about your plane. Thanks John

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RE: 33cc homelite - 5/31/2004 10:48 PM   
Maximus-RCU



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Status: offline 		It is the Lanier 120 size. It has around 1140 sq. in. of wing. I have a Poulan 46 on another plane and was wondering if the Homelite was built on a smaller crankcase/head. It seems that all the Poulans from the 33 to the 46 all are built on the same engine block. Is the Homelite smaller?

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Maximus

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RE: 33cc homelite - 6/1/2004 4:56 AM   
captinjohn


 

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Status: offline 		I am just guessing....but I think the 33cc engine should work just fine. Can you estmate the all up ready to fly weight? Thanks Capt,n

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RE: 33cc homelite - 6/5/2004 1:53 AM   
Maximus-RCU



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Status: offline 		The box says 12lbs. ready to fly with a 120 two-stroke so I would imagine 13lbs. with the heavier gas engine. What do you think. Now, I'm not trying to do 3D, as for one I do not even know how to hover. I'm basically a warbird pilot who made a good deal on the plane. I'm used to flying warbirds and war era trainers at scale+ speeds with aerobatics that were scale accordingly. I do know many aerobatic manuevers, I just haven't 3D'd and it is not my intention to try with this plane. Now with that said, What do you think? My cowl is roughly 7 1/4" wide and I'm trying not to butcher up the cowling to bad. I have a Poulan 46CC on a Mister Mulligan and a couple of Ryobi two ringers on ignition so I like to convert engines. The Homie sounds interesting. Thanks in advance.


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Maximus

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RE: 33cc homelite-carb. linkage - 6/5/2004 2:57 AM   
Tmoth4



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Status: offline 		My BUSA Dr1 is 14+ lbs. and the Homelite 33 really hauls it. It flies around at half throttle no problem...whatever aerobatics I want to try.

Jim

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RE: 33cc homelite - 6/5/2004 4:59 PM   
hooker53



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Status: offline 		Hello Maximus, How does the 46cc fly the Mister Mulligan?? I had one of them but someone else wanted it more than I did before getting it ready to fly!!! Bud always had 60 2 stroke on his mind but everyone always put something bigger on his planes. I'll bet the 46 cc pulls the heck out of that Mulligan??? Right. I would like to build another Mulligan in the future but I'm wondering if a MVVS 1.60 2 stroke gasser would pull it???? Later Hooker53

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RE: 33cc homelite - 6/7/2004 12:24 AM   
Maximus-RCU



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Status: offline 		Don't know yet as I'm just getting ready to cover it. It will weigh 20+ lbs. so I think it will be fine. I couldn't believe that it was supposed to fly on a 60 size glow. I'd like to see it!. I wish someone would give me some measurements on the 33 Homelite though. I hate to go buy one and find out it won't fit in my cowl.


Later,


Maximus

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RE: 33cc homelite - 6/9/2004 5:18 PM   
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Status: offline 		Maximus....I am not sure, but that 46cc engine on a 1.2 Laser with a wing of 1140 square inches should be a blast to fly. Are you still going to do that one. Let us know how it works out. Thanks Capt,n

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RE: 33cc homelite - 6/11/2004 5:56 PM   
4 stroken ron



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Status: offline 		I skimmed through this thread a couple times. I may have missed it but I have not seen any RPM numbers you are getting, and prop sizes you guys are using. For instance I have a pretty good running Mc 32 that I converted with a C@H ign. turning a MAS 18X10 at 8400.
On a good day . On a really good day. How does that compare to the 33 Homie?
Thanks
Ron

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RE: 33cc homelite - 6/11/2004 8:55 PM   
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Status: online 		That's one good Mac 32. You had better forget about a Homie 33.

I have two Mac 32's and they are 1,000 rpm less than that. They have C-H and were modified by TKG himself. I'm running 1/2" carbs on them. I didn't try a 16-10 on them but they would probably turn one that fast though it would be out of their torque band.

Enjoy,

Jim

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RE: 33cc homelite - 6/11/2004 11:47 PM   
4 stroken ron



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Status: offline 		Jim
I am running a WT9 carb. I think it is a little larger. I have also removed all except the other most crank bearing seal, It has been stuffed in the rear, the top of case milled, piston machined a little on top, the ports touched up a little and 29 degrees total advance.
Ron

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RE: 33cc homelite - 6/12/2004 2:12 AM   
w8ye



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Status: online 		A WT9 only has a 7/16" venturi the same as a late model Zenoah 23 carb per the Walbro web site.

I must admit that mine still have the center seal and the crankcases are not stuffed. But all the rest of the cylinder/piston mods have been done to them including the C-H ignition dialed-in to 29 degrees with no sychro-spark.

I must have a couple lemons? They don't seem to have much power for what they have on them and the way they are made? I'm not as pleased with them as I thought I would be. I did them about 4 years ago. They do run dependable though.

With my Homie 30's the stock one except for a Zenoah 23 carb does 7,500 with a 18-8 and the one with the C-H ignition including synchro-spark and all the mods including the Zenoah 23 carb and extra intake ports does a 18-8 at 8200.

One big thing about a Homie 33 is that they run pretty good as stock except for the model airplane mods. The way the late model Homelite and poulan small chain saws are made, they are not as readily adaptable to increased compression ratio or port timing changes as the weed whacker engines were so it is unlikely they will be able to turn a 18-10 at 8400.

Generally the weedies were timed rather mildly, as made, compared with a chain saw.

The US 41 though ported rather mildly, does a 18-10 at about 7400. A G 38 is a couple hundred more.

Enjoy,

Jim

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RE: 33cc homelite - 6/12/2004 4:09 AM   
4 stroken ron



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Status: offline 		I'll sell you my tach nice and cheap......... Maybe that will make your engines run better.

Ron

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RE: 33cc homelite - 6/12/2004 4:21 AM   
w8ye



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Status: online 		Why don't I sell you my TNC tach?

I suppose, now, I'll get flooded with inquirries from people looking for a TNC? It won't be cheap.

Enjoy,

Jim

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RE: 33cc homelite-carb. linkage - 6/12/2004 7:07 AM   
av8tor1977



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Status: offline 		So W8ye, what rpm's exactly are you getting, and with what prop(s), on your McCulloch 32 engines? I have a couple of these, and one is slated to go on a GSP Katana 72" wingspan. I haven't converted the engine(s) yet, as I have a couple of projects ahead of this one, but it would be nice to know what to expect. If you have any measured thrust numbers I would appreciate those as well. What altitude and temps are you running?

A lot of people seem to "poo poo" (sorry) the effects of altitude and temperature, but let me tell you; they can be impressive. I also do ultralights and full scale aviation. The charts, and my experience, show that here at my field elevation of 4200 ft. and 80+ degrees, the engine power is down about 20% compared to sea level and 59 degrees, take off roll is doubled, and rate of climb is halved!! I notice a substantial difference in all my airplanes; model and full size alike, just with the temp changes between summer and winter. I flight instruct in ultralights, and I only fly with my heavy students very early in the morning on summer days, or the climb rate can get so anemic it's scary.

BTW, someone mentioned that Don's Hobby is back ordered on the TNC tachs, and they can't contact the company that was making them. Glad I got one a little while back!

Take care, and thanks for any info,
AV8TOR

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Mac 32 - 6/12/2004 8:17 AM   
w8ye



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Status: online 		Bob,

When I did the first one I was disappointed with the results after reading, at the time on RCOnline some 4 years ago, about much higher rpm readings. I talked to Terry about all this and he sold me a much modified 32 cylinder-piston-insulator that I mounted on a 28cc crankcase. I then exchanged the 24 carbs for the 32's from Warehouse Hobbies. I thought by looking at the way the engines were made and set up, that they should run circles around my first stock except for 28 carb Homelite 30 but they were about the same.

The elevation around here is 1175 and the temp and humidity was in the mid 70's at the time.

I looked all over just now for numbers on a Homelite 33 but did't find any. I would have to assume at this point that a stock 33cc Homelite chain saw and the Homelite weedie 30's and Mac 32's with bigger carbs on them will all run about the same. Which at this typical density altitude would peak in the 7400 to 7800 rpm range with a 18-8 Dynaflite because individual engines will vary somewhat.

From the way Terry sounds, the Mac is a torque engine and you don't want to be running it near 8,000 or above. That your thrust will be best to keep it in the 7000 to 7500 range with the prop.

The middle seal apparently puts a lot of drag on a new engine. They increase in rpm by a couple hundred after 2 or 3 hrs run time. Also with these engines, not long after you start it and you try to see what rpm it will peak out at, it will not attain that much rpm again during that run. I guess they warm up somewhat?

My TNC tach came from the original guy in Woodstock, NY just before he quit. I heard the same thing you did about the one's from Don.

The Mac makes a very nice model engine with the C-H ignition on it. They look like they were made from the beginning to be a model engine. They do not require any cutting on the crankcase. The carb mounts with the throttle arm close enough to straight up and down to where you can get away with not using a belcrank. The way C-H makes the sensor mount nowdays, it will only mount at the 28 degree position. I have a half dozen 32 Macs but the others are not modified. There was a problem with the crank pin working it's way out of the counter balance on some and it would eat the backplate. Some of the plastic would get up on top of the piston and get hard in the combustion chamber. When the backplate is penetrated, the engine will no longer draw fuel and quit. You can press the pin back into the counter balance and fill the hole in the backplate with JB.

Enjoy,

James

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RE: Mac 32 - 6/12/2004 8:34 AM   
4 stroken ron



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Status: offline 		I had the crankpin work out on one of mine. I pressed it back in 2 different times and finally had it spot welded on the back side. It never came loose again.
Ron

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RE: 33cc homelite - 6/26/2004 12:03 AM   
ramms1


 

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Status: offline 		It looks like you have a Wendell Hostetler 22% Curtis hawk. I have aquired one, and need to know the balance point. I would be gratefull if you could help!!!
Thanks.

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RE: 33cc homelite - 6/30/2004 4:09 AM   
rsjr



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Status: offline 		Hey ramms1,

I balanced my Hawk, as per the plans, 1-5/8" in front of the lower wing's leading edge. The plane always flew in a slight tail down attitude, but was very easy to fly and always floated in on landings. While I was driving down I-90 the other day, near Columbus, Montana, a full-size Waco bi-plane flew overhead and it exhibited the same caracteristics....

Hope this helps,

Ron

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RE: 33cc homelite - 7/31/2004 7:49 PM   
Lee MRC


 

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Status: offline 		Why in the He double LL does this Da@@n program dunp every thing you have typed in because you have to answer the phone and can not continue to submit your information? I had a very good fix that "Hams" have been using for years entered and it dumped it!

If anyone wants to know how to STOP engine enterfirence "E" mail me at l.mcright@comcast.net and I will reply with about 50 plus years of experience worth of info.

Please excuse the spelling but I am from TEXAS! And mad right at this program right now!!!

fly the airplane first

73 Lee K5MRC

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RE: 33cc homelite - 7/31/2004 10:49 PM   
Turbobeaver


 

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Status: offline 		LeeMRC,the program is designed in such a way that it will not allow users to keep the system idleing as it slows things down too much.It will time out and shut you down.I know where your coming from though as I've had it happen to me before to.You finally get it all completed and go to submit it and...................nothing.The old RCOnline site was especially bad for this I found.I try to keep my posts down to at least a novel or two now just in case it happpens again.

I'd love to get some of your insight on stopping engine interference LeeMRC.Any advice gladly accepted.Please feel free to e-mail me any info that you may have on the subject.I am especially interested in the smaller 25/30 size weed eater type engines at this point but chain saw motors are next on my list of "to do's" once I get my feet wet on these smaller gassers.

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RE: 33cc homelite - 7/31/2004 11:25 PM   
Tmoth4



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Status: offline 		I don't have any problems at all with interference from my weedies or chainsaw conversions. I use only Hitec receivers.

The 25cc Homelite weedie engines are great but they need the bigger throat carb for better performance. The 33cc engines out of the 14" Homelite saws already have the bigger carb, although they're a little harder to start.

Jim

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RE: 33cc homelite - 8/1/2004 3:31 AM   
Antique



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Status: offline 		I'd like to have the ability to paste a Word document into the reply. Then lenghty answers/questions could be developed using Word and quickly posted.

< Message edited by Antique -- 7/31/2004 7:32:06 PM >

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RE: 33cc homelite - 8/1/2004 7:07 AM   
av8tor1977



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Status: offline 		That will work. Or at least it did to post this message. I wrote it in "Word Pad", then copied it and pasted it here.

Give it a try.

Take care,
AV8TOR

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