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Copperhead Venom 45 - 1/7/2007 1:08:03 AM   
dhooks



Posts: 1043
Joined: 10/7/2002
From: Lake Butler , FL, USA
Status: offline 		Seen a couple ppl asking questions about these moters an ran across a review a some guy did on the 45 the other day. http://tech.flygsw.org/ I thought it was a good article

Ive had two of the 45cc an had great luck with them. First class ppl to deal with, I even lost the prop nut an washer to one an they shipped me another free of charge. Cant beat that with a stick.


The only thing the guy mentioned in the review really was the ignition an I heard a rumour that there upgrading to fully electronic advance.

I was getting low to mid 7s on props in the 20x10 -22x8 range very simliar to the review.

Just wondering if Copperhead could comment on the ignition?

< Message edited by dhooks -- 2/28/2007 1:28:22 AM >

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RE: Copperhead Aviation Venom 45-30 - 1/7/2007 5:54:06 AM   
Flyer Freq



Posts: 912
Joined: 8/20/2002
From: Appleton, WI, USA
Status: offline 		Very interesting, Dan! Thanks for directing us to this site!

Andy

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RE: Copperhead Aviation Venom 45-30 - 1/7/2007 3:45:14 PM   
azhar


 

Posts: 571
Joined: 2/21/2002
From: Redmond, WA, USA
Status: offline 		I agree with dhooks. The engine runs very strong. I am not sure about the ignition as it works fine on mine. I will be posting numbers on the engine soon. I have hit a minor snag and am waiting for a part from them. And weather currently sucks in the NW. I will be posting numbers for the Xoar 20x8 and Beila 19x10 3-blade. Will also post numbers with other sizes as I get the props.

Azhar

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RE: Copperhead Aviation Venom 45-30 - 1/7/2007 4:21:07 PM   
Flyer Freq



Posts: 912
Joined: 8/20/2002
From: Appleton, WI, USA
Status: offline 		The numbers for thrust sound too good to be true. I wonder if those were actual measured numbers or calculated numbers, based on a program like Thrust HP, which we all know to be "off".

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RE: Copperhead Aviation Venom 45-30 - 1/7/2007 4:43:18 PM   
dhooks



Posts: 1043
Joined: 10/7/2002
From: Lake Butler , FL, USA
Status: offline 		Its calculated Im sure, if it were real it would be as strong as most 70cc engines.

Im guessing he uses it to quantify between engines which is useful.

Based on my 18lb extra its probably in the mid 20lb range which lines up with my other 50cc moters Ive had.

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RE: Copperhead Aviation Venom 45-30 - 1/7/2007 4:48:36 PM   
dhooks



Posts: 1043
Joined: 10/7/2002
From: Lake Butler , FL, USA
Status: offline
quote:

ORIGINAL: azhar

I agree with dhooks. The engine runs very strong. I am not sure about the ignition as it works fine on mine. I will be posting numbers on the engine soon. I have hit a minor snag and am waiting for a part from them. And weather currently sucks in the NW. I will be posting numbers for the Xoar 20x8 and Beila 19x10 3-blade. Will also post numbers with other sizes as I get the props.

Azhar


The ignition is good, its just some ppl dont like the mechenical advance for whatever reasons. Im guessing there would be broader market appeal for a fully electronic advance system.

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RE: Copperhead Aviation Venom 45-30 - 1/8/2007 3:47:00 PM   
mfuess



Posts: 402
Joined: 9/5/2002
From: Bedford, TX, USA
Status: offline 		Greetings Gentleman!

I am the engineer and host of the GSW Tech Site. I'm glad you found the information regarding the Venom 45 useful. Yes, the thrust numbers were calculated to set a benchmark for "live" testing. I've flown on a large number of props to determine where the powerband really is, and see which props take advantage of this massive stroker (for its size). The Pro Zinger 22x8 is (by far) the best prop to get maximum torque from the Venom 45. While the "suggested" props work OK, they tend to rev beyond the engines torque curve. I did a side by side comparison to my BME 50 and the V 45 can, and will out pull the BME under controlled conditions. However, nothing replaces displacement when it comes down to brutal flying power.

The Venom 45 is a supereme engine, especially for the price! Will it replace a BME 50, DA 50, G62, etc.? In a word no. the 50cc+ engines are in a class by themselves. BUT the V45 will certainly replace virtually all 45cc engines and a few 50cc engines with power to spare.

Regarding the ignition. Yes I had some issues with the OEM module but Tim (at Copperhead) has sent a replacement. Meanwhile, I am using a CH module with Syncro-spark and it works excellent. My understanding from Tim is, they are in the process of upgrading their ignition. I am very familiar with the ignition he is considering and it's fantastic! It's very reliable, low current draw, and has a full scale spark advance.

Bookmark my Tech Site as I will be updating the Venom 45 Review as the engine gets lots of air-miles on it. I don't mind telling you, that you get maximum bang for the engine buck with these engines.

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RE: Copperhead Aviation Venom 45-30 - 1/8/2007 6:53:37 PM   
dhooks



Posts: 1043
Joined: 10/7/2002
From: Lake Butler , FL, USA
Status: offline 		Right from the horses mouth! Not calling you a horse though....

Your results line up closesly with what Ive saw with my two engines. I believe you went to a little more trouble to document your data though.

You havent got the 30cc by chance do you?

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RE: Copperhead Aviation Venom 45-30 - 1/8/2007 7:08:51 PM   
mfuess



Posts: 402
Joined: 9/5/2002
From: Bedford, TX, USA
Status: offline 		Dan,

I don't have the Venom 30cc engine. It's a little small for my airplane applications, but from what I've seen it appears to be another winner. It has excellent weight, and good HP for its size. I'd stack it up against any G38, and possibly even my modified G38. I may have to talk Tim into sending me one for evaluation purposes...


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RE: Copperhead Aviation Venom 45-30 - 1/8/2007 7:26:23 PM   
dhooks



Posts: 1043
Joined: 10/7/2002
From: Lake Butler , FL, USA
Status: offline
quote:

ORIGINAL: mfuess



The Venom 45 is a supereme engine, especially for the price! Will it replace a BME 50, DA 50, G62, etc.? In a word no. the 50cc+ engines are in a class by themselves. BUT the V45 will certainly replace virtually all 45cc engines and a few 50cc engines with power to spare.



Bookmark my Tech Site as I will be updating the Venom 45 Review as the engine gets lots of air-miles on it. I don't mind telling you, that you get maximum bang for the engine buck with these engines.


That was my thought to, it wont directly compete with a 50-60cc engine strictly due to the displacement thing. But for half the price with 95% of the performance of the current crop of *name brand* engines there isnt much downside.

Especially with all the newer crop of 13-16lb planes out there which they will rock on. I had one on a 18lb WH extra an had enough ump to hover TR an pull out. Plus its about 6oz lighter then the current 50cc stuff.


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RE: Copperhead Aviation Venom 45-30 - 1/9/2007 12:48:37 AM   
novabill


 

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RE: Copperhead Aviation Venom 45-30 - 1/9/2007 12:02:01 PM   
mfuess



Posts: 402
Joined: 9/5/2002
From: Bedford, TX, USA
Status: offline 		There's an ignition upgrade on the horizon for Venom engines. It will be automatic spark advance, so the linkage will be history.

This ignition will greatly enhance performance and appearance. At this time, I have no idea when these will be available but there's no doubt Tim will do everything possible to get them in.

< Message edited by mfuess -- 1/9/2007 12:08:12 PM >

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RE: Copperhead Aviation Venom 45-30 - 1/9/2007 4:02:39 PM   
azhar


 

Posts: 571
Joined: 2/21/2002
From: Redmond, WA, USA
Status: offline 		I just got my part and should be running the engine this weekend again. Hope to put numbers up with XOAR 20x8 and Beil 19x10 (3-blade). Talked to Tim about the ignition and what mfuess said is definitely on the horizon.

Azhar

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RE: Copperhead Aviation Venom 45-30 - 1/10/2007 12:34:59 AM   
SkyBurner


 

Posts: 63
Joined: 7/10/2002
From: LaPorte, IN, USA
Status: offline 		How much $$ is the ing. upgrade going to add to Price? Still thinking of trying one, mmight as well hold out for the upgrade.

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RE: Copperhead Aviation Venom 45-30 - 1/10/2007 2:41:37 AM   
Mitsu1



Posts: 577
Joined: 11/5/2002
From: Dumas, AR, USA
Status: offline 		Hey Guys, ... I had my feelers out for a light weight gasser along the lines of the older BME 44, and when I couldn't find one, I ran into this thread. I went to the manufacturers website, then to the site Dhooks mentioned ... "Marks Tech Site", .. read the review and was sold. I sewed it up by calling and speaking to Tim, and I just purchased a Venom 45!

My brother flys a DA-50, and I could as well, but I don't have to have the "name", ...