CMPro Ventus 2HX ARF - Page 4

Straight Up · Jun 23, 2008, 01:12 PM

Thanks Steve. Yeah, I followed the DG1000 thread for quite a while, but not continuously. I read that it sloped well, and even saw footage, but I didn't ever read of thermalling exploits. In my experience the need to keep the speed up and the ability to find thermals can be difficult to mix. I just wish the wing cord was increased a little (surely we're not trying to win scale contests here?) to boost the area, drop the wing-loading and improve the thermal capability. Does anyone know of a company that has done this with a model? I'm seeing it done a lot with Park Flyers of Extras...

jason H · Jun 24, 2008, 04:12 PM

Hi straight Up,

Thanx for the kind words on my latest project. Work on the Ventus has slowed alittle as it's has been mighty cold out in my shed this last week and the only time i'm getting to work on it is after dinner at night. With regards when it'll be ready to maiden I would think that maybe this weekend if the weather is good to fly.

"Will the Ventus thermal"....well how knows. I have the DG1000, CMPro Discus and a Wicks Salto all in the same class (2.6mtr)and they all thermal but only in the moderate strength lift +, all 3 are no heavier than 1.4kgs. I also have a Multiplex ASW 27B (2.6mtr) that is 1.7 kgs and will thermal all day long in the weakest lift.
What i'm trying to point out is that as long as the weight is kept to a minimum then there is no reason why the ventus would'nt thermal.This is why I have gone with light weight HS-56 servo's all round except for the retract and airbrake. The only way I can trully answer your question is to fly thermals, this won't happen for 5 months now as the winter winds have set in and it's agood 20kts + until then.

salisbug · Jun 24, 2008, 04:27 PM

Quote:

Originally Posted by jason H

the winter winds have set in and it's agood 20kts + until then.

Shucks, eh? 20+ kts for 5 months.........

Maybe even I'll get a flying session in that time

Straight Up · Jun 24, 2008, 10:40 PM

Thanks Jason. I know it's a bit of an "iffy" question I asked, but you handled it well. It looks like the sad reality is... "it won't thermal well enough for me". I could just about cry. It looks so awesome... the sleek moulded shape, the retractable wheel, the spoilers, the long high-tech wing.... but I think I will be disappointed by it. You've clearly found your inner zen, and can tolerate the need for moderate+ lift, but I'm not at that level yet. Thanks again - I'm still going to watch this thread with serious interest, and look very forward to reading a flight report. Launch high and sink slowly....

jason H · Jun 25, 2008, 02:59 AM

Thanx Straight Up.....

Got a package for Canada today.

jason H · Jun 25, 2008, 03:02 AM

Big shout out gots to two Banana benders that have just got a Ventus each. Welcome to the dark side Howie and Richo.

Wefinance01 · Jun 27, 2008, 10:37 PM

I bought one of this Ventus thing today. I have been flying Easy Star, and super fast ducted fan jets,...I order this for a wild FPV idea....love the retract for a second camera to take pictures....anyways....does anyone know the mod for this plane into electric power....I've vids of the its brother with folding props...will the same mode work? I would greatly appreaciate the help...as this is my first Big Wing Span plane.

pope · Jun 30, 2008, 03:36 AM

How is the fuse belly, my Discus needed glass layup for slope flying.

cheers
dave

Swampster53 · Jun 30, 2008, 11:18 AM

Quote:

Originally Posted by salisbug

Aido,

You could always:

a/ stop crashing
b/ learn to repair your own, which may make you want to a/

btw. any bites on the Assassin front?

Sorry for the hijack Gunna

Hi there Glen. Sorry about taking so long to get back to you but I only just found this post. Gunna is my Guru and he's taught me heaps over the past couple of years.

I've done most of the repairs to my own stuff, except for the fibreglass and carbon repairs. It's a little daunting at first, but when shown how, one thinks, "Bugger, that's pretty easy, I can do that!"

Just takes someone with a bit of patience and time to show someone else who is keen and willing to learn.

As for the Assassin, RCOZSTYLE, Gary, informed me that they were sold through Model Flight and were locally made by a guy called Kevin Weedon. Still trying to track one down. If you or any other readers know of one for sale, please let me know. Cheers for now, Ade.

jason H · Jul 02, 2008, 04:59 AM

Here's a quick video I took of the retract in the ventus. I have slowed down the servo's operation speed with my JR 9XII transmiter.

http://www.youtube.com/watch?v=3Kk6lfkfHZ4

jason H · Jul 02, 2008, 05:21 AM

Well it's been a week or more since i'd done any work on the little gem and have finaly been able to get out and do alittle more...

Here I start to install the elevator servo, linkages and wiring. First off I would like to say that I have used the instructions as a guide line as there are afew things in it that I just don't like. The first is that the instruction booklet calls for the builder to stick the elevator servo to the mounting plate with double sided tape, I really don't like this idea and opted to stick the servo directly to the mounting plate with epoxy and microballoons. I know some of you out there will say that "you have never had a problem with tapeing your servo's in", well not me...
2nd is that you have to use a servo extention to hook up your servo to your Rx, well i don't like servo extention and prefer to cut the wire in half and add a lenght and resolder.

bie · Jul 02, 2008, 11:32 AM

Jason,

Quote:

Originally Posted by jason H

...I have slowed down the servo's operation speed with my JR 9XII transmiter...

what’s the purpose of slowing down the servo’s operation speed for the retract? Was it just for the video sequence (to better show how it works) or do you plan to operate it this way in flight?

I ask, because I thought, one should slow down the operation speed, but was teached the other way by pilots of full scale gliders: In full scale gliders the gear comes out in a short time, not slowed down.

Regards,

Andy

Stevepilot · Jul 02, 2008, 01:10 PM

The speed of the retract isn't what immediately strikes me, but what does, is it's position relative to the cg when down. If the doors are based on full scale practice, shouldn't the leg be under the leading edge of the wing root,forward of the cg? Usually making the leg (and axle) as far forward as the aperture will allow. Or is it just how the doors are made?

jason H · Jul 02, 2008, 04:10 PM

bie - I slowed down the retract for a number of reasons, 1 is because i was worried that with the constant "snap snap" from the retract locking down and then locking up it may produce wear in the polycarbonate parts. 2nd was so you all can see the action of the retract, easier to see whats going on when it's slowed down, and 3rd reason is because I can.....

Stevepilot - I fully understand what you are saying in regards to CofG and scale looks. I would also like to point out that I have a great deal of respect for your work, re: your ASH 26 thread, but I think that you are forgetting one major think. The CMPro Ventus is a $180AUD kit that is mass produced in China for the cheaper end of the market. There is no way in the world that this kit will preform as well as S2G or Gerasis kit will and the slight change in CofG is the least of my worries over such a cheap kit. I just hope they have remembered to glue it all together with enough glue so as it doesn't fall apart, which I seen happen last weekend to another CMPro kit....

Thankyou for your comments.

Stevepilot · Jul 02, 2008, 05:52 PM

Oh, it's very very kind of you to give me a pedestal to stand upon I really don't deserve re:the ASH 26! A long way to fall!

As you'll know that particular model isn't high in my estimation regarding it's heritage. But, we move on. Yes, I appreciate the cost differential (though frankly the S2G offering wasn't worth it) but I was thinking more along the lines of how it will be towed up? If the wheel is too far aft it will nose in won't it? Having said that, I was at a major tow meet a few weekends ago and even the large stuff (Including half scale) left the ground pdq! As for gluing it up right, extra re-inforcment might be the order of the day?

Jul 02, 2008, 05:21 AM	#56
jason H Magic Blue Smoke costs to much Join Date: Dec 2004 Location: Melbourne, AUSTRALIA Posts: 2,537	Elevator set up. Well it's been a week or more since i'd done any work on the little gem and have finaly been able to get out and do alittle more... Here I start to install the elevator servo, linkages and wiring. First off I would like to say that I have used the instructions as a guide line as there are afew things in it that I just don't like. The first is that the instruction booklet calls for the builder to stick the elevator servo to the mounting plate with double sided tape, I really don't like this idea and opted to stick the servo directly to the mounting plate with epoxy and microballoons. I know some of you out there will say that "you have never had a problem with tapeing your servo's in", well not me... 2nd is that you have to use a servo extention to hook up your servo to your Rx, well i don't like servo extention and prefer to cut the wire in half and add a lenght and resolder. Attached Thumbnails Back side of servo mount, servo wraped in masking tape and glued onto mount with a mix or microballoons and epoxy. Nice and strong join. Note, you have to ruff-up the lexan mount with sandpaper before glueing on the servo. 84.2 KB · Views: 708 front side of evelator mount. Nice, clean and strong. Note join in servo wire... 91.5 KB · Views: 542

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Jun 23, 2008, 01:12 PM	#46
Straight Up Vertical Unlimited Join Date: Mar 2007 Location: Mississauga, Toronto, Canada Posts: 227	Thanks Steve. Yeah, I followed the DG1000 thread for quite a while, but not continuously. I read that it sloped well, and even saw footage, but I didn't ever read of thermalling exploits. In my experience the need to keep the speed up and the ability to find thermals can be difficult to mix. I just wish the wing cord was increased a little (surely we're not trying to win scale contests here?) to boost the area, drop the wing-loading and improve the thermal capability. Does anyone know of a company that has done this with a model? I'm seeing it done a lot with Park Flyers of Extras...

Jun 24, 2008, 04:12 PM	#47
jason H Magic Blue Smoke costs to much Join Date: Dec 2004 Location: Melbourne, AUSTRALIA Posts: 2,537	Hi straight Up, Thanx for the kind words on my latest project. Work on the Ventus has slowed alittle as it's has been mighty cold out in my shed this last week and the only time i'm getting to work on it is after dinner at night. With regards when it'll be ready to maiden I would think that maybe this weekend if the weather is good to fly. "Will the Ventus thermal"....well how knows. I have the DG1000, CMPro Discus and a Wicks Salto all in the same class (2.6mtr)and they all thermal but only in the moderate strength lift +, all 3 are no heavier than 1.4kgs. I also have a Multiplex ASW 27B (2.6mtr) that is 1.7 kgs and will thermal all day long in the weakest lift. What i'm trying to point out is that as long as the weight is kept to a minimum then there is no reason why the ventus would'nt thermal.This is why I have gone with light weight HS-56 servo's all round except for the retract and airbrake. The only way I can trully answer your question is to fly thermals, this won't happen for 5 months now as the winter winds have set in and it's agood 20kts + until then.

Jun 24, 2008, 10:40 PM	#49
Straight Up Vertical Unlimited Join Date: Mar 2007 Location: Mississauga, Toronto, Canada Posts: 227	Thanks Jason. I know it's a bit of an "iffy" question I asked, but you handled it well. It looks like the sad reality is... "it won't thermal well enough for me". I could just about cry. It looks so awesome... the sleek moulded shape, the retractable wheel, the spoilers, the long high-tech wing.... but I think I will be disappointed by it. You've clearly found your inner zen, and can tolerate the need for moderate+ lift, but I'm not at that level yet. Thanks again - I'm still going to watch this thread with serious interest, and look very forward to reading a flight report. Launch high and sink slowly....

Jun 25, 2008, 02:59 AM	#50
jason H Magic Blue Smoke costs to much Join Date: Dec 2004 Location: Melbourne, AUSTRALIA Posts: 2,537	Thanx Straight Up..... Got a package for Canada today.

Jun 25, 2008, 03:02 AM	#51
jason H Magic Blue Smoke costs to much Join Date: Dec 2004 Location: Melbourne, AUSTRALIA Posts: 2,537	Big shout out gots to two Banana benders that have just got a Ventus each. Welcome to the dark side Howie and Richo.

Jun 27, 2008, 10:37 PM	#52
Wefinance01 Registered User Join Date: Jun 2008 Location: Kennesaw,GA Posts: 388	I bought one of this Ventus thing today. I have been flying Easy Star, and super fast ducted fan jets,...I order this for a wild FPV idea....love the retract for a second camera to take pictures....anyways....does anyone know the mod for this plane into electric power....I've vids of the its brother with folding props...will the same mode work? I would greatly appreaciate the help...as this is my first Big Wing Span plane.

Jun 30, 2008, 03:36 AM	#53
pope Dave Pope Manawatu NZ Join Date: Dec 2006 Location: Palmerston North NZ Posts: 184	How is the fuse belly, my Discus needed glass layup for slope flying. cheers dave

Jul 02, 2008, 04:59 AM	#55
jason H Magic Blue Smoke costs to much Join Date: Dec 2004 Location: Melbourne, AUSTRALIA Posts: 2,537	Here's a quick video I took of the retract in the ventus. I have slowed down the servo's operation speed with my JR 9XII transmiter. http://www.youtube.com/watch?v=3Kk6lfkfHZ4

Jul 02, 2008, 01:10 PM	#58
Stevepilot aka : SteveBB.. Join Date: May 2007 Location: South Yorkshire,England Posts: 402	The speed of the retract isn't what immediately strikes me, but what does, is it's position relative to the cg when down. If the doors are based on full scale practice, shouldn't the leg be under the leading edge of the wing root,forward of the cg? Usually making the leg (and axle) as far forward as the aperture will allow. Or is it just how the doors are made?

Jul 02, 2008, 04:10 PM	#59
jason H Magic Blue Smoke costs to much Join Date: Dec 2004 Location: Melbourne, AUSTRALIA Posts: 2,537	*bie -* I slowed down the retract for a number of reasons, 1 is because i was worried that with the constant "snap snap" from the retract locking down and then locking up it may produce wear in the polycarbonate parts. 2nd was so you all can see the action of the retract, easier to see whats going on when it's slowed down, and 3rd reason is because I can..... *Stevepilot -* I fully understand what you are saying in regards to CofG and scale looks. I would also like to point out that I have a great deal of respect for your work, re: your ASH 26 thread, but I think that you are forgetting one major think. The CMPro Ventus is a $180AUD kit that is mass produced in China for the cheaper end of the market. There is no way in the world that this kit will preform as well as S2G or Gerasis kit will and the slight change in CofG is the least of my worries over such a cheap kit. I just hope they have remembered to glue it all together with enough glue so as it doesn't fall apart, which I seen happen last weekend to another CMPro kit.... Thankyou for your comments.

Jul 02, 2008, 05:52 PM	#60
Stevepilot aka : SteveBB.. Join Date: May 2007 Location: South Yorkshire,England Posts: 402	Oh, it's very very kind of you to give me a pedestal to stand upon I really don't deserve re:the ASH 26! A long way to fall! As you'll know that particular model isn't high in my estimation regarding it's heritage. But, we move on. Yes, I appreciate the cost differential (though frankly the S2G offering wasn't worth it) but I was thinking more along the lines of how it will be towed up? If the wheel is too far aft it will nose in won't it? Having said that, I was at a major tow meet a few weekends ago and even the large stuff (Including half scale) left the ground pdq! As for gluing it up right, extra re-inforcment might be the order of the day?