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RE: Copperhead Aviation Venom 45-30 - 10/14/2007 7:58 PM   
mfuess



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Status: offline 		Mike I PM'd you...

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RE: Copperhead Aviation Venom 45-30 - 10/15/2007 2:59 AM   
ramduster



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Status: offline 		I have to ask are the Copperhead Venom 45 and 30cc engines any good my son needs a new engine for his super sportster.

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RE: Copperhead Aviation Venom 45-30 - 10/15/2007 3:14 AM   
The Big Kahuna


 

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Status: offline 		You can't go wrong buying a Venom engine!

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RE: Copperhead Aviation Venom 45-30 - 10/15/2007 6:29 AM   
Mitsu1



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Status: offline 		My flying buddy who owns 3W & Kroma big engines .. goes on and on about how great my "little" engine is. I let him tune it because he has far more experience than me, and we are both impressed with my Venom 45.

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RE: Copperhead Aviation Venom 45-30 - 10/15/2007 3:43 PM   
w5kfg



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The V45 is an excellant. I am installing one on my Giant Super Sporster
Bill

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RE: Copperhead Aviation Venom 45-30 - 10/17/2007 2:03 AM   
bec123


 

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From: regina, SK, CANADA
Status: offline 		Hello All
Has anyone used the XOAR props on the V45 and if so what rpm...I have been using a zinger 22/8 7150rpm... the vertical is ok but thought it would be better with this prop and rpm,,,, I have the cowl pressure prob and will enlarge the cowl on this plane,,,but still a powerful engine..a friend is going to let me tach a XOAR but I will not do it until next year,,,done flying this year...thanks

bec

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RE: Copperhead Aviation Venom 45-30 - 10/17/2007 2:22 AM   
mfuess



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Status: offline 		I don't think you'll be all that enthralled with a XOAR prop... They are OK, but the Zinger you are currently using is actually better. If you want more vertical drop your pitch to 7 and keep the 22" diameter. OR, try a 23x7 prop...

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RE: Copperhead Aviation Venom 45-30 - 10/17/2007 6:43 PM   
Flyer Freq



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quote:

ORIGINAL: mfuess

I don't think you'll be all that enthralled with a XOAR prop... They are OK, but the Zinger you are currently using is actually better. If you want more vertical drop your pitch to 7 and keep the 22" diameter. OR, try a 23x7 prop...


Please don't take this wrong, but I respectfully disagree on the Zinger being better than the XOAR. It is true that the RPM drops when using the XOAR, but the pull goes through the roof. I had a Zinger on a competitors engine, and found that when trying to pull out of a hover, there wasn't much pull there. The tips were going supersonic and getting real noisey. I put a XOAR of the same size on, and now the plane pulls out of a hover very quickly, and the tips don't lose their bite. I haven't purchased a Zinger since. If you want RPM, go Zinger, if you want pull, go XOAR! Put that is my opinion. Other than that, I hang on your every word!

Andy

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RE: Copperhead Aviation Venom 45-30 - 10/19/2007 6:23 AM   
mfuess



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Status: offline 		To each his own, Andy. It all comes down to personal preference and application. I use a Menz Ultra Three Blade 20x12 and it'll pull stumps at a mere 6300 RPM.

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RE: Copperhead Aviation Venom 45-30 - 10/19/2007 2:51 PM   
Flyer Freq



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quote:

ORIGINAL: mfuess

To each his own, Andy. It all comes down to personal preference and application. I use a Menz Ultra Three Blade 20x12 and it'll pull stumps at a mere 6300 RPM.



Amen!

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RE: Copperhead Aviation Venom 45-30 - 10/19/2007 4:49 PM   
w5kfg



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Where are you purchasing your Menz 3 bladed props? I have checked a few places and they have been discontinued

Regards
Bill

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RE: Copperhead Aviation Venom 45-30 - 10/20/2007 12:44 AM   
mfuess



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Status: offline 		That could very well be, I haven't needed a prop in a long time! The last time I bought one, I got if from Desert Aircraft...

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RE: Copperhead Aviation Venom 45-30 - 10/20/2007 9:51 AM   
JoeyCoates


 

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Status: offline 		Hey guys, I have been looking for a gas engine for my Ultra-RC Katana and was pointed in this direction. Actually, I had never even heard of Venom engines as this will be my first gasser and I just have not followed gas engine forums.

Anyway, I just ried to go to the website's for Venom engines and I could not pull it up. Can anyone tell me what the all up weight is for the 30cc and the 45cc engines? I am looking for engine, muffler, and ignition. I can get a great deal on a used DZ140, but as I said I would like to try gas but I need to keep the weight down. I have been looking at a DL-50 as they are both inexpensive and fairly light at 3.46lbs complete, but it is really a LOT more power then I need. I will start to look through the thread to see what I can find and thanks for the help.

Oh, someone said that the 30cc is no longer available, is this correct?

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RE: Copperhead Aviation Venom 45-30 - 10/22/2007 12:15 AM   
hdsoar


 

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Status: offline 		These are pictures of the upper rod bearing from my V45. It was on its' 5th gallon of gas, mixed at 32:1 since day one, when I noticed it didn't sound quite right. Took it apart and that's what I found. Engine was repaired under warranty but for various reasons I've lost confidence in Copperhead/Venom/OMP and my V45. I will most likely be listing my V45 on the RCU Marketplace.

Later.

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< Message edited by hdsoar -- 10/22/2007 12:52 AM >

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RE: Copperhead Aviation Venom 45-30 - 10/23/2007 8:51 PM   
Mike Miller


 

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quote:

ORIGINAL: hdsoar

These are pictures of the upper rod bearing from my V45. It was on its' 5th gallon of gas, mixed at 32:1 since day one, when I noticed it didn't sound quite right. Took it apart and that's what I found. Engine was repaired under warranty but for various reasons I've lost confidence in Copperhead/Venom/OMP and my V45. I will most likely be listing my V45 on the RCU Marketplace.

Later.

HD

Sorry to see and hear that you have had a failure. I have to say up front that my new engine is just that, new, and is running great. I know that anything built by a man can and will wear out. Let's just hope that you got one of those 1 in a million bad bearings that happen every so often. Thanks for not getting out the shotgun and blasting the company, I really hate it when I see that happen.

Mark F. Any comments on this failure?

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RE: Copperhead Aviation Venom 45-30 - 10/24/2007 12:04 AM   
mfuess



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quote:

ORIGINAL: Mike Miller


quote:

ORIGINAL: hdsoar

These are pictures of the upper rod bearing from my V45. It was on its' 5th gallon of gas, mixed at 32:1 since day one, when I noticed it didn't sound quite right. Took it apart and that's what I found. Engine was repaired under warranty but for various reasons I've lost confidence in Copperhead/Venom/OMP and my V45. I will most likely be listing my V45 on the RCU Marketplace.

Later.

HD

Sorry to see and hear that you have had a failure. I have to say up front that my new engine is just that, new, and is running great. I know that anything built by a man can and will wear out. Let's just hope that you got one of those 1 in a million bad bearings that happen every so often. Thanks for not getting out the shotgun and blasting the company, I really hate it when I see that happen.

Mark F. Any comments on this failure?


Mike, I can only provide a "worst case scenario" without actually performing statistical stress analysis on the engine. In other words, a CAUSE & EFFECT Analysis. The photo suggests there was side-loading on the bearing. Side-loading is commonly associated with mating surfaces that are not parallel. IE: the rod "may" have a slight curve to it. Also, detonation "could" have the exact same effect, as well as engine harmonics (vibration). Any of these conditions can cause a pinching action on one edge of the rollers and push the roller(s) up against the sidewall of the cage. If the pressure is great enough and long enough, it would break the rolled edge of the cage and possibly let rollers slip out. Exactly like the one seen in the photo. The simplest laws of physics state: If the conditions remain the same, the result will always be the same... IE: eventually another broken bearing. I would be willing to bet the cracked part of the cage was at the TOP of the rod... that's excatly where I've seen this "effect" many times before.

Again, this is PURELY a "best guess" based on how needle bearings react under specific conditions. This does not imply or suggest these conditions exist with this particular engine... In any event, I would "highly recommend" this engine be replaced with a new one, because the next bearing is destined to break (again) in the current engine & current conditions. However, replacement is up to Tim, Copperhead, OMP or whomever is the decision maker for warranties. You asked what I thought...





< Message edited by mfuess -- 10/24/2007 12:18 AM >

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RE: Copperhead Aviation Venom 45-30 - 10/25/2007 6:30 PM   
Mike Miller


 

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Status: offline 		Mark, he says in his post that the engine was repaired under warranty. It was my understanding that you were the warranty repair center. Has something changed with this? Perhaps what he meant to say is that he hopes that it will be repaired under warranty.

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RE: Copperhead Aviation Venom 45-30 - 10/26/2007 1:29 AM   
mfuess



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Status: offline 		I no longer do work for Tim/Copperhead. End of story.

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RE: Copperhead Aviation Venom 45-30 - 10/27/2007 4:43 PM   
mfuess



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Status: offline 		OK, what's going on? There were 58 pages here just the other day, and now there's only 46?...

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RE: Copperhead Aviation Venom 45-30 - 10/27/2007 6:08 PM   
hdsoar


 

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RE: Copperhead Aviation Venom 45-30 - 11/2/2007 11:38 AM   
The Big Kahuna


 

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Status: offline 		What's happened to this thread?
We were all enjoying it and now - STONE DEAD?

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RE: Copperhead Aviation Venom 45-30 - 11/2/2007 7:58 PM   
blw



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Status: offline 		Nothing bad happened. RCAdmin set the software to allow more posts per page, so page counts dropped. I think a lot of people asked for this. If you bookmarked to certain pages of long threads like I do, your last place bookmarked will have changed.

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RE: Copperhead Aviation Venom 45-30 - 11/3/2007 6:02 AM   
Mitsu1



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Status: offline 		.. That ain't all there is .... Earlier I posted some pics of a plane I scratch built in this thread ... and recently I went through every single post in this thread looking for them .... and the pics are no longer there!

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RE: Copperhead Aviation Venom 45-30 - 11/3/2007 6:49 AM   
The Big Kahuna


 

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Status: offline 		Where re you Tim?
Thought you would be right there responding to this line of questioning. NO longer working with Mark? Now thats a great loss!
Mark more than anyone would have contributed to a lot of sales for you with his great Tech Notes and understanding mature. I tell you for a fact that it was Mark's write up of the V45 that got me in to buy one!

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RE: Copperhead Aviation Venom 45-30 - 11/3/2007 2:45 PM   
norbert001


 

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Status: offline 		I'm hoping its my poor computing skills but I can't access the copperhead website or venom site

Norbert

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