RE: Venus II  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> Pattern Flying >> RE: Venus II
Page: <<   < prev  44 45 46 47 [48] 49 50 51 52 53   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: Venus II - 5/1/2009 2:24 AM   
Dusey52


 

Posts: 5
Score: 100
Joined: 6/21/2008
Last Login: 7/4/2009
From: Salem, OR, USA
Status: offline 		CustomPC,

That's good news, thanks! Be sure to keep us updated on your build.

Dean

Hide Signatures

(in reply to CustomPC)
       Post #: 1176

RE: Venus II - 5/3/2009 2:04 AM   
cmoulder


 

Posts: 1119
Score: 100
Joined: 7/30/2006
Last Login: 11/6/2009
From: Ossining, NY, USA
Status: offline 		Pics of my finished product... or almost. Don't know if I'm quite happy with the yellow part, and it may need some more yellow accents of some sort.

However, the plane flies better than ever with the CG at 6-3/4" and no change in trim with the fuel tank on CG. A great thing to do if any one is considering it... no change at all in elevator trim throughout the flight!

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


< Message edited by cmoulder -- 5/8/2009 2:33 PM >

_____________________________

Bob

Hide Signatures

(in reply to cmoulder)
       Post #: 1177

RE: Venus II - 5/3/2009 5:29 AM   
Giln


 

Posts: 36
Score: 100
Joined: 7/2/2007
Last Login: 11/5/2009
From: BondiNSW, AUSTRALIA
Status: offline
quote:

ORIGINAL: cmoulder

Don't know if I'm quite happy with the yellow part, and it may need some more yellow accents of some sort.



Looks stunning to me. Wouldn't change anything.
Well done! Thanks for sharing with us.
Regards
Gil

_____________________________

Club Saito Member #609

Hide Signatures

(in reply to cmoulder)
       Post #: 1178

RE: Venus II - 5/3/2009 5:05 PM   
codfish


 

Posts: 117
Score: 100
Joined: 3/13/2006
Last Login: 11/5/2009
From: sellersville, PA, USA
Status: offline
quote:

ORIGINAL: cmoulder

Pics of my finished product... or almost. Don't know if I'm quite happy with the yellow part, and it may need some more yellow accents of some sort.

However, the plane flies better than ever with the CG at 6-3/4" and no change in trim with the fuel tank on CG. A great thing to do if any one is considering it... no change at all in elevator trim throughout the flight!


Very very cool!! good job cmolder!
You could sell these, looks like a winner!

Hide Signatures

(in reply to cmoulder)
       Post #: 1179

RE: Venus II - 5/3/2009 5:32 PM   
cmoulder


 

Posts: 1119
Score: 100
Joined: 7/30/2006
Last Login: 11/6/2009
From: Ossining, NY, USA
Status: offline 		Thanks much!

It was a heckuva lot of work, and I don't know if I'd do it again!!

_____________________________

Bob

Hide Signatures

(in reply to codfish)
       Post #: 1180

RE: Venus II - 5/4/2009 7:28 PM   
KLXMASTER14



Posts: 197
Score: 100
Joined: 6/18/2007
Last Login: 11/7/2009
From: Simi Valley, CA, USA
Status: offline
quote:

ORIGINAL: cmoulder

Pics of my finished product... or almost. Don't know if I'm quite happy with the yellow part, and it may need some more yellow accents of some sort.

However, the plane flies better than ever with the CG at 6-3/4" and no change in trim with the fuel tank on CG. A great thing to do if any one is considering it... no change at all in elevator trim throughout the flight!


Looks great! Nice job, the color scheme is well done. I have been thinking about doing what you have done. Thank you for the inspiration! I am sure that the modifications would turn a good plane into a great one (no pun intended).

-Robert

_____________________________

Overkill Engineering and Design- AMA 39978- SPA 432
Websters dictionary: Vertigo n. A sensation of dizziness.

Hide Signatures

(in reply to cmoulder)
       Post #: 1181

RE: Venus II - 5/5/2009 1:21 AM   
gaRCfield


 

Posts: 3910
Score: 101
Joined: 5/20/2008
Last Login: 11/7/2009
From: Burlington, VT, USA
Status: offline 		Has anyone tried a 3-blade on the Venus? I like the mid-throttle speed of a 15x10 but wish it would idle/land slower. I don't like the slower mid-throttle speed of the 16x8 but it does land nice and slow.

_____________________________

Joe Marri
Venus II/YS FZ110s; Venus 40/OS 55AX; 69"Yak/OS 120AX; Airtronics RDS-8000

Hide Signatures

(in reply to KLXMASTER14)
       Post #: 1182

RE: Venus II - 5/5/2009 3:27 AM   
nonstoprc



Posts: 1255
Score: 100
Joined: 9/9/2003
Last Login: 11/7/2009
From: Round Rock, TX, USA
Status: online 		I use 15X8 APC and get the plane to slow down pretty earlier (throttle at 1/4 when the plane is at the 2nd segment of landing, and cut to low at the last segment). Because of low wing load and the wing profile, VII just floats in.

You probably can do the same with 15X10. It is important to make the idle RPM at around 2000.

Hide Signatures

(in reply to gaRCfield)
       Post #: 1183

RE: Venus II - 5/5/2009 3:50 AM   
rcpattern



Posts: 1062
Score: 100
Joined: 10/17/2003
Last Login: 11/7/2009
From: Lexington Park, MD, USA
Status: offline 		A 3 blade will kill your vertical performance. You really need an airplane that is way over powered to be able to start running props with extra blades...

Arch

_____________________________

Team Futaba, YS Parts and Service, Central Hobbies, Tarable Graphics, Team Black Magic, Morgan Fuels, Tech Aero Designs

Hide Signatures

(in reply to nonstoprc)
       Post #: 1184

RE: Venus II - 5/5/2009 7:00 AM   
gaRCfield


 

Posts: 3910
Score: 101
Joined: 5/20/2008
Last Login: 11/7/2009
From: Burlington, VT, USA
Status: offline 		Thanks guys. I'll try messing with the 15x10 and maybe order up a 16x10. The 15x8 slows down just fine and that's what I've been using, I just feel like I could/should be using less throttle throughout most of the sequence.

_____________________________

Joe Marri
Venus II/YS FZ110s; Venus 40/OS 55AX; 69"Yak/OS 120AX; Airtronics RDS-8000

Hide Signatures

(in reply to rcpattern)
       Post #: 1185

RE: Venus II - 5/5/2009 10:47 AM   
cmoulder


 

Posts: 1119
Score: 100
Joined: 7/30/2006
Last Login: 11/6/2009
From: Ossining, NY, USA
Status: offline 		Thanks, Robert.

This is actually a pretty well built airframe for an ARF, so even after a few hundred flights it was still in excellent shape. Mine was getting a lot of hangar rash, so I decided to address the things I thought could be improved - the fuel tank on CG, getting the tail servos inside, and modifying the wing tips. I did it in spurts of motivation during the winter and spring.

Can't wait to see what you do with yours!

_____________________________

Bob

Hide Signatures

(in reply to KLXMASTER14)
       Post #: 1186

RE: Venus II - 5/9/2009 2:50 PM   
JLITZ3


 

Posts: 20
Score: 100
Joined: 5/9/2009
Last Login: 11/2/2009
From: Columbia, MD, USA
Status: offline
quote:

ORIGINAL: cmoulder

Thanks, Robert.

This is actually a pretty well built airframe for an ARF, so even after a few hundred flights it was still in excellent shape. Mine was getting a lot of hangar rash, so I decided to address the things I thought could be improved - the fuel tank on CG, getting the tail servos inside, and modifying the wing tips. I did it in spurts of motivation during the winter and spring.

Can't wait to see what you do with yours!


Nice job on your Venus cmoulder. I think I will move my tank over the CG as well. Can you tell any difference in flight ?

Hide Signatures

(in reply to cmoulder)
       Post #: 1187

RE: Venus II - 5/10/2009 2:14 AM   
cmoulder


 

Posts: 1119
Score: 100
Joined: 7/30/2006
Last Login: 11/6/2009
From: Ossining, NY, USA
Status: offline
quote:

ORIGINAL: JLITZ3


quote:

ORIGINAL: cmoulder

Thanks, Robert.

This is actually a pretty well built airframe for an ARF, so even after a few hundred flights it was still in excellent shape. Mine was getting a lot of hangar rash, so I decided to address the things I thought could be improved - the fuel tank on CG, getting the tail servos inside, and modifying the wing tips. I did it in spurts of motivation during the winter and spring.

Can't wait to see what you do with yours!


Nice job on your Venus cmoulder. I think I will move my tank over the CG as well. Can you tell any difference in flight ?


Thanks, jlitz3! I realize my Venus overhaul is peanuts compared to any of the fabulous, original work being done by so many great pattern guys. But it was a good exercise (if sometimes tedious - removing the old covering! ) and perhaps it will inspire me to do a Black Magic or one of the other great pattern planes.

The huge difference in flight is the constant elevator trim. It's one of those situations where I didn't realize what I was missing until I tried it, and it gives me a keener appreciation of the need for pumped engines where constant CG is required.

I have a 14-oz tank in mine, and although this is overall a great flying model, I had to trim it so that it required a significant amount of push when inverted - because it was a bit noseheavy with a full fuel tank - so that it needed just a little push when the tank emptied. When trimmed for a little push with a full tank, it would climb when inverted because it was then a little tailheavy. So, noseheavy trim was mandatory. Now, the stick movements are consistent throughout the flight, both upright and inverted.



_____________________________

Bob

Hide Signatures

(in reply to JLITZ3)
       Post #: 1188

RE: Venus II - 5/10/2009 5:14 AM   
gaRCfield


 

Posts: 3910
Score: 101
Joined: 5/20/2008
Last Login: 11/7/2009
From: Burlington, VT, USA
Status: offline
quote:

Nice job on your Venus cmoulder. I think I will move my tank over the CG as well. Can you tell any difference in flight ?


ABSOLUTELY. It is really, really nice, and worth all the stupid trouble I've been having with the pump to keep the tank at the CG, although now the pump seems to be working OK again.

_____________________________

Joe Marri
Venus II/YS FZ110s; Venus 40/OS 55AX; 69"Yak/OS 120AX; Airtronics RDS-8000

Hide Signatures

(in reply to cmoulder)
       Post #: 1189

RE: Venus II - 5/10/2009 12:55 PM   
JLITZ3


 

Posts: 20
Score: 100
Joined: 5/9/2009
Last Login: 11/2/2009
From: Columbia, MD, USA
Status: offline 		I have a OS 120 on mine and I don't have any experience with pumps. I do like the idea that your CG is more stable throught flight. Thanks for the info.

Hide Signatures

(in reply to gaRCfield)
       Post #: 1190

RE: Venus II - 5/10/2009 6:30 PM   
gaRCfield


 

Posts: 3910
Score: 101
Joined: 5/20/2008
Last Login: 11/7/2009
From: Burlington, VT, USA
Status: offline 		Mine has an OS120 also (2 stroke). Please note that my pump issues seem to be mostly operator error. If I were to do it again I'd go for an Iron Bay or Cline regulator.

_____________________________

Joe Marri
Venus II/YS FZ110s; Venus 40/OS 55AX; 69"Yak/OS 120AX; Airtronics RDS-8000

Hide Signatures

(in reply to JLITZ3)
       Post #: 1191

RE: Venus II - 5/10/2009 7:41 PM   
JLITZ3


 

Posts: 20
Score: 100
Joined: 5/9/2009
Last Login: 11/2/2009
From: Columbia, MD, USA
Status: offline
quote:

ORIGINAL: gaRCfield

Mine has an OS120 also (2 stroke). Please note that my pump issues seem to be mostly operator error. If I were to do it again I'd go for an Iron Bay or Cline regulator.


I don't have any knowledge of pumps outside of the OS 140 pumped engines however your experiences with the Perry Pump are to my benefit if there are problems that might be worth looking at one of the other pumps. Thanks for any help you might be able to give before I make a selection.

Hide Signatures

(in reply to gaRCfield)
       Post #: 1192

RE: Venus II - 5/11/2009 4:26 AM   
ARTP47


 

Posts: 76
Score: 100
Joined: 8/5/2007
Last Login: 11/7/2009
From: Edmonton, AB, CANADA
Status: offline 		Maidened my Venus to day, nice flying airplane. Did the Basic IMAC sequence several times. The OS 120ax is an absolute animal in this plane, use a 15/10 with the motor big time rich still had unlimited vertical and a little better than 3/4 throttle. Did several huge loops and some, towering stall turns. Going to like this plane a lot.

Hide Signatures

(in reply to JLITZ3)
       Post #: 1193

RE: Venus II - 5/12/2009 8:33 PM   
Strat2003


 

Posts: 736
Score: 100
Joined: 3/9/2003
Last Login: 11/6/2009
From: Mt. Pleasant, OH, USA
Status: offline 		Pardon me if I've missed it in the previous 48 pages of this thread, but...

After a few flights on my Venus/120AX I decided to move the tank back and install a VP-30 regulated pump. The engine was running fine before (about an hour on it) but I can't seem to get the midrange set now. It gives indications of being too rich mid-range (stumbling and smoking when I open the throttle) but when I lean the idle a tiny bit it behaves as if it's lean and quits dead.
Anybody care to walk me thru the setup before i pull the rest of my hair out?

Thanks,
Scott

Hide Signatures

(in reply to ARTP47)
       Post #: 1194

RE: Venus II - 5/12/2009 8:37 PM   
rcpattern



Posts: 1062
Score: 100
Joined: 10/17/2003
Last Login: 11/7/2009
From: Lexington Park, MD, USA
Status: offline 		Could be the pump pressure is too high. This could be forcing more fuel than needed into the carb around mid throttle when the engine switches from the low speed needle to the high. Try backing off the pump pressure a little bit,

Arch

_____________________________

Team Futaba, YS Parts and Service, Central Hobbies, Tarable Graphics, Team Black Magic, Morgan Fuels, Tech Aero Designs

Hide Signatures

(in reply to Strat2003)
       Post #: 1195

RE: Venus II - 5/12/2009 9:41 PM   
Strat2003


 

Posts: 736
Score: 100
Joined: 3/9/2003
Last Login: 11/6/2009
From: Mt. Pleasant, OH, USA
Status: offline 		What would be "a little bit" Arch? Like a half turn, or two turns, or what? This thing's really got me frustrated!
By the way, I'm Scott from your ex-club, the St.C. R/C Flyers. Rick finally convinced me to do a couple of contests this year...if I can get the damn thng running right, lol!

Hide Signatures

(in reply to rcpattern)
       Post #: 1196

RE: Venus II - 5/12/2009 10:32 PM   
gaRCfield


 

Posts: 3910
Score: 101
Joined: 5/20/2008
Last Login: 11/7/2009
From: Burlington, VT, USA
Status: offline 		Has anyone tried the tank at CG without a pump, just the stock muffler-pressure setup?

_____________________________

Joe Marri
Venus II/YS FZ110s; Venus 40/OS 55AX; 69"Yak/OS 120AX; Airtronics RDS-8000

Hide Signatures

(in reply to Strat2003)
       Post #: 1197

RE: Venus II - 5/13/2009 2:08 PM   
rcpattern



Posts: 1062
Score: 100
Joined: 10/17/2003
Last Login: 11/7/2009
From: Lexington Park, MD, USA
Status: offline 		Scott,

I would probably go a turn and see what it does. If you go to far you'll know it. I'm going to TRY to get up that way for your contest,

Arch

_____________________________

Team Futaba, YS Parts and Service, Central Hobbies, Tarable Graphics, Team Black Magic, Morgan Fuels, Tech Aero Designs

Hide Signatures

(in reply to gaRCfield)
       Post #: 1198

RE: Venus II - 5/13/2009 8:04 PM   
Strat2003


 

Posts: 736
Score: 100
Joined: 3/9/2003
Last Login: 11/6/2009
From: Mt. Pleasant, OH, USA
Status: offline 		Thanks for the advice, Arch. I thought the regulator was more sensitive than it is, had been sneaking it out in 1/4 turn increments and not getting anywhere. I seem to have it working now, out six turns from where it started. It still puts out enough to hold a setting while holding the nose up, so I guess it's time to try it in the air.
Hope you can make out contest...the new field is coming along nicely and the location can't be beat...no glass roofed building in the overfly area, wide open wied openness all around.
Scott

Hide Signatures

(in reply to rcpattern)
       Post #: 1199

RE: Venus II - 5/14/2009 5:26 PM   
jrpav1


 

Posts: 321
Score: 100
Joined: 9/11/2003
Last Login: 11/2/2009
From: New Milford, CT, USA
Status: offline 		Scott,
As a rule of thumb: set your pump pressure so that your main needle is the same number of turns open with the pump as it was when you were running muffler pressure. In other words, if it was 1.5 turns out on muffler pressure and it flew fine, adjust the pump pressure so that you can set the needle about 1.5 turns out and the engine runs the same. Now, when you do this you'll probably find that you need to lean out the idle / low end mixture a bit. You may want to re-check your setup. Look at where your main needle is. I bet it's way open. This will screw up the mid range as you described. I would bet that if you backed off the pump pressure enough to get a good idle without adjusting the low-speed needle, you'll probably be too lean on the top end when you fly and you'll end up dead sticking. It may run OK on the ground but when the prop unloads you'll be too lean. I don't think I've ever found the need to turn the pump adjusting screw more than 1/4 turn either way.

John Pavlick
Team Black Magic, Tech-Aero Designs

Hide Signatures

(in reply to Strat2003)
       Post #: 1200

Page:   <<   < prev  44 45 46 47 [48] 49 50 51 52 53   next >   >>  
All Forums >> RC Airplanes >> Pattern Flying >> RE: Venus II
Page: <<   < prev  44 45 46 47 [48] 49 50 51 52 53   next >   >>  




Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

1.500RCU1