RE: CMP/GSP Spitfire  
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
  Printable Version
       


Mustang Exhaust - Kit
Seller:  tony-howard
Details:   $35.00   |  9/1/2008   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: CMP/GSP Spitfire
Page: <<   < prev  1 2 3 4 5 [6] 7 8 9   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: CMP/GSP Spitfire - 6/17/2005 12:11:52 PM   
jcilia


 

Posts: 66
Joined: 5/21/2003
From: Bkara, MALTA
Status: offline 		Hi Pete,

thanks photo good enough - I just wanted to see how the retracts with the oleos looked seems a great fit.

cheers

(in reply to Pete850)
       Post #: 126

RE: CMP/GSP Spitfire - 6/19/2005 3:46:26 PM   
Dave03B


 

Posts: 2206
Joined: 6/5/2003
From: Bournemouth, UNITED KINGDOM
Status: offline 		I flew mine yesterday! 1.08 and 14x8 really moved this thing! Not at all slow! I turned it over half way through to a British F3A flyer. who really showed it off to its full! Unfortunately, that part of the flight was not videoed. A 2min video of takeoff, some flybys and nearly the landing will be online soon. Unfortunately, because the mounting blocks had previously been broken by original owner, they did not have the (repaired) strength to withstand the landing (even though it was smooth) I now have to take back the skin and covering and see what I can do to re enforce this, and stop any further retract bay problems (any ideas??)

Overall, amazing flying model.....attracted lots of attention and Jon commented on how well it flew and felt.

Cheers for now
Dave

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
Click to see fullsize image.
Click for fullsize


< Message edited by Dave03B -- 6/19/2005 3:49:57 PM >

_____________________________

Dave Bright - www.wimbornemac.org

(in reply to jcilia)
       Post #: 127

RE: CMP/GSP Spitfire - 6/19/2005 4:53:42 PM   
butlern


 

Posts: 269
Joined: 5/14/2003
From: Iowa City, IA, USA
Status: offline 		Congratulations on your flight, Dave, and hopefully your repairs will not take too long to complete.

Out of curiosity, where is your CG? 120 mm, 125 mm, 130 mm?

Anyone else out there struggling with this plane's tendency to porpoise on landing? Edwin, I know your's is set at 4 7/8, but what about the rest of you flying this plane? I have been experimenting with mine lately, and it seems as though if I'm too far from ideal... the plane becomes unwieldy.

Let me know, and thanks in advance.

Noah

(in reply to Dave03B)
       Post #: 128

RE: CMP/GSP Spitfire - 6/19/2005 5:14:41 PM   
Dave03B


 

Posts: 2206
Joined: 6/5/2003
From: Bournemouth, UNITED KINGDOM
Status: offline 		I believe my cg is at 135mm. When it landed, it seemed that it would have settle onto the tail with only minor up elevator needed.. however i cannot be sure, due to the retract mount failure induced spin.

I'd like to hear what others have found optimum cg to be.....the cg I have ensures great flying characteristics.....ground is ok ish......

_____________________________

Dave Bright - www.wimbornemac.org

(in reply to butlern)
       Post #: 129

RE: CMP/GSP Spitfire - 6/19/2005 11:09:58 PM   
BlueMax3


 

Posts: 269
Joined: 10/12/2002
From: Livermore, CA, USA
Status: offline 		Mine is at 122/123mm. Anything further back and mine becomes difficult to handle at slow speeds, especially during landing when the tank doesn't have much fuel in it.

Travis

(in reply to Dave03B)
       Post #: 130

RE: CMP/GSP Spitfire - 6/20/2005 5:40:38 AM   
Sturtz



Posts: 1502
Joined: 9/22/2004
From: El Reno, OK, USA
Status: offline 		122 mm works for mine. It's got a bad habit of porposing on landing if tail heavy. The flaps really help slow it down on landings.


_____________________________

Kurt
AMA# 794291
Saito Club #121

(in reply to BlueMax3)
       Post #: 131

RE: CMP/GSP Spitfire - 6/22/2005 1:45:14 AM   
butlern


 

Posts: 269
Joined: 5/14/2003
From: Iowa City, IA, USA
Status: offline 		Thanks for the replies, gents.

I was at ~122 mm to start. It tended to floated a little so I moved it up to 118 mm. It was OK there, but it seemed as though it became too nose-heavy... When I would come in the plane wanted to sink really fast and the elevator would be a bit unresponsive. So, I'd feed in more up, but then it seemed as though I would all of a sudden hit some critical elevator point and the plane would rise dramatically. I have since moved it back to 125 mm and now the plane won't settle in very well... it wants to float forever. So much so that I have to force it down. Every third or so attempt at landing it floats and floats and then slows to the point where I fear a stall so have to go around again. I'm just really surprised that those little (2-4 mm) changes translate into such huge differences in flight characteristics.

I need to keep experimenting, I suppose. I really need to figure this out because I absolutely love the way the plane flys. I just wish it were more predictable when landing.

Thanks again for the input.

Noah

(in reply to Sturtz)
       Post #: 132

RE: CMP/GSP Spitfire - 6/22/2005 5:48:16 AM   
BlueMax3


 

Posts: 269
Joined: 10/12/2002
From: Livermore, CA, USA
Status: offline 		Noah,

Based upon what you said, perhaps 120mm would be good to try for your plane?

Just a thought.

Travis

(in reply to butlern)
       Post #: 133

RE: CMP/GSP Spitfire - 6/23/2005 12:15:10 AM   
Dave03B


 

Posts: 2206
Joined: 6/5/2003
From: Bournemouth, UNITED KINGDOM
Status: offline 		I've documented the retract re-enforcement incase any of you (heaven forbid) find yourself in the same situation where your retract mounting blocks decide to give up. WMAC>FORUM>SCALE>SPITFIRE

cheers for now,
Dave

_____________________________

Dave Bright - www.wimbornemac.org

(in reply to BlueMax3)
       Post #: 134

RE: CMP/GSP Spitfire - 7/4/2005 1:47:10 PM   
jcilia


 

Posts: 66
Joined: 5/21/2003
From: Bkara, MALTA
Status: offline 		SJN - you have not yet told us if the German retracts are good ? unless I missed your posts and PETE sorry for more questions is you ASP 120 inverted ? if yes did you think about putting it sideways ?

best regards
Joe

(in reply to Dave03B)
       Post #: 135

RE: CMP/GSP Spitfire - 7/4/2005 2:01:59 PM   
Pete850



Posts: 250
Joined: 9/19/2003
From: WaterloovilleHampshire, UNITED KINGDOM
Status: offline 		Hi Joe,

Yes my ASP120 is indeed inverted, as I'd rather have the head sticking out the bottom of the cowl than the side. Having said that, without a remote glow it's a bugger to find the plug with the glow starter while grovelling around on your hands and knees. The next time the cowl is off I'll fit one I think.

The attached picture shows it just built without the oleos and befor I put a head protecting skid on the rocker cover.


Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

Yet another weekend's flying unscathed.......!!
www.planenutz.co.uk

(in reply to jcilia)
       Post #: 136

RE: CMP/GSP Spitfire - 7/4/2005 2:06:46 PM   
jcilia


 

Posts: 66
Joined: 5/21/2003
From: Bkara, MALTA
Status: offline 		Pete looks good - I was planning to put on an on-board glow as I am so concerned with inverted engines. What is that hole top ( right ) on cowl for ? I see you are using two switches so you have gone for two sets of batteries ?

Joe

(in reply to Pete850)
       Post #: 137

RE: CMP/GSP Spitfire - 7/4/2005 2:18:37 PM   
Pete850



Posts: 250
Joined: 9/19/2003
From: WaterloovilleHampshire, UNITED KINGDOM
Status: offline 		Joe,

There are two hole on the top of the cowl, but on this particular photo I have only plugged one of them. They were simply to allow access for an allen key to tighten the two extension wires (choke and main needle) that come out the side.

I have mechanicalo retracts so yes, I thought it wise to have separate batteries. 2000mah main and 1400mah for the retracts. Maybe a bit OTT but better safe than sorry. You only want a less than perfect landing to bend a U/C leg that subsequently doesn't retract properly and drain your only battery - then your up sh*t creek without a paddle!!

_____________________________

Yet another weekend's flying unscathed.......!!
www.planenutz.co.uk

(in reply to jcilia)
       Post #: 138

RE: CMP/GSP Spitfire - 7/4/2005 2:23:16 PM   
Dave03B


 

Posts: 2206
Joined: 6/5/2003
From: Bournemouth, UNITED KINGDOM
Status: offline 		Video of the maiden flight of mine is now up.

_____________________________

Dave Bright - www.wimbornemac.org

(in