RE: ASM F-7F Tigercat    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> Twin & Multi Engine RC Aircraft >> RE: ASM F-7F Tigercat
Page: <<   < prev  1 2 [3] 4 5 6 7 8 9 10   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: ASM F-7F Tigercat - 2/1/2010 9:02 AM   
frankspeaks


 

Posts: 31
Score: 100
Joined: 2/8/2008
Last Login: 7/20/2011
From: Oklahoma City, OK, USA
Status: offline 		I have enjoyed reading about your cat!!!

Please keep posting details.

_____________________________

AMA 191376

Hide Signatures

(in reply to Brad330l)
       Post #: 51

RE: ASM F-7F Tigercat - 2/1/2010 7:06 PM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Hi to all

Progressing on my Cat and she's finally taking shape now.
Airframe is basically complete, all servos and control pull pulls / pushrods are in. Undercarriage fitted and working - after reading Brad's air leak issues I opted to go straight for Robart air lines, control valve and filler valve. No sign of any leaks so far.
Engines are in as well as fuel tanks, ignition units and power supplies .... I've opted for Saito FG-20 gassers as I'm a bit of a fan of them and have proven very reliable and powerfull in another warbird of mine as long as you pay special attention to cooling. I'm going to be running 14 x 9 three bladed props.
Have got a couple of Top Flight dummy radials on order _ hope they fit ok.

Thanks so much for all your builders notes Brad, they've really helped to avoid some potential build issues before hitting them!

Gear doors to do next (JOY!), then fit the exhausts and cowels and sort out the cooling.
After that it's fitting the reciever and batteries and then onto final set up and detailing



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


Hide Signatures

(in reply to frankspeaks)
       Post #: 52

RE: ASM F-7F Tigercat - 2/2/2010 5:14 AM   
B Shipp


 

Posts: 161
Score: 100
Joined: 4/11/2002
Last Login: 6/18/2013
From: Johns Island, SC, USA
Status: online 		Hey guy's,
Here is how I attached my gear doors. I used Robart offset hinges. I taped the gear doors in place with masking tape. Working from the wing side of the nacelle, I laid in a piece of carbon unidirectional cloth using 30 minute epoxy. I then glued the hinges in place with 30 minute thickened with milled fiberglass. This turned out to be a quick clean installation, here are a few pictures.

Brian-



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


Hide Signatures

(in reply to thonnor)
       Post #: 53

RE: ASM F-7F Tigercat - 2/2/2010 7:39 AM   
Capt G



Posts: 1273
Score: 100
Joined: 1/27/2002
Last Login: 6/18/2013
From: Las Vegas, NV, USA
Status: offline 		very nice. can't wait to see how you do the actuation.

Hide Signatures

(in reply to B Shipp)
       Post #: 54

RE: ASM F-7F Tigercat - 2/3/2010 2:18 AM   
miklos



Posts: 444
Score: 100
Joined: 4/1/2004
Last Login: 6/14/2013
From: Meriden, CT, USA
Status: offline 		With regards the pivot pin on the retracts sliping out, There is a small set screw on the retract mechanism that is suppose to hold the pivot pin in place. Make sure this set screw is tight. Assuming these retracts are similar to the ones on the ASM P-61, and from the photos, they look identical.
Also a good idea to lock tite the metal counter sunk screws that attach to two sides of the retract mecanism to the retracts blocks as these have loosened on me in the past.

Hide Signatures

(in reply to Capt G)
       Post #: 55

RE: ASM F-7F Tigercat - 2/3/2010 3:20 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		The Pivot pins on mine were not locked tightly by the grub screws. Fixed and lock-tighted' down before assembly.
The countersunk screws were tight but again there was no lock tight applied ... so corrected that to

Hide Signatures

(in reply to miklos)
       Post #: 56

RE: ASM F-7F Tigercat - 2/8/2010 3:07 PM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Hi guys, great to see some discussion here. I am on holidays and away and just got to check progress.
It seems I have overlooked the set screw that holds in the pivot pin. I will have to revisit that when I get back to town. I did locktite every thing else and put flats on all axles and such that grub screws were locking onto but missed (totally) this pin.
Nice effort on the gear door hinging Brian. Looks real nice. Are you going to use the kit method for actuation?

Thonner, I too have the Top Flite dummy radials (1/7th I think) but will not fit them as yet before I get my Cat running with the set up I have now and kick those cowl flaps out a fair bit to get the air sucking out of them. I fly in very high ambient temperatures (35 and up degrees C) so I will need to limit ground running and get the bird in the air with subsiquent air flow running through the ducting and cowls.

Cheers guys, you will love this model when you fly it so keep it going.
I'll check in on you all soon.

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to thonnor)
       Post #: 57

RE: ASM F-7F Tigercat - 3/5/2010 5:27 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Finally ... at last she's just about finished
Got the day off work tomorrow so I'm gonna give them engines a good running ... hence the cowls off.
Spring is on the door step here in the UK and over the next couple of weeks we are rolling and prepping the flying field so should be looking forward to a maiden soon!
Must admit ... no other model has ever maid me so excited (and nervous) about the maiden flight! Is it because it's a twin?...or is it because it looks so beastly and purposeful? Well if she flies as good as she looks then there shouldn't be to much to worry about

Brad.... are you back from hols yet? Any more flight on your Cat to report?

Best Rgds Tony



Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to Brad330l)
       Post #: 58

RE: ASM F-7F Tigercat - 3/6/2010 2:10 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Engines had nearly a couple of hours running today. Starting out very rich for a couple of tanks then gradually leaning off the top end untill they were both running at 8300rpm. Throttle response seems good and nothing fell off the airframe! If I get chance to play some more this weekend I'll concentrate on fine carb tuning and perhaps start to synch them up. Dammm it sounds good ... nothing like the sound of multi's eh!
Was quite reassuring that after 3 hours of standing there was still ample air pressure to pull the undercarriage up.
Needed to add 4oz of weight to the nose to bring the C of G in.. something I could probally have avoided if I had mounted the main radio battery in the nose, but I decided that I'd mount it below the front section of the wing, in a foam box so that I could remove it after a days flying for easy recharging. I'm using Lipo's and reg at 6v. I'll let you know the all up weight when I get some more batteries for my scales. Almost certainly gonna be heavier than Brad's as I'm using petrol motors with the added ignition units and batteries.
Getting close to maiden now so any flight reports from anybody out there would be greatlt appreciated

Tony



Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to thonnor)
       Post #: 59

RE: ASM F-7F Tigercat - 3/6/2010 4:00 AM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Way to go Tony. Lookin and soundin great.
As for a flight report I can advise after only four flights but I have got to the stage of using flap for takeoff and it is all still in one piece.
CoG was set right on the mark and with this I have no elevator mix in to keep the nose down when flaps are used (about 15 degrees at the moment) This is with landing power set and gear down. So for take off it is perfect with flaps. This reduces the takeoff roll by a good quarter and climb out is great tucking the gear up as you go.
Ailerons, no problems,,,, use the kit settings. Elevator I have high rates set to the kit settings and low rates at about 60% of that and this is all I have used for my flights. The landing you see on youtube linked earlier in the thread was with this elevator setting. I have 40% expodential set on all surfaces. (except rudder) Rudder is set at low rates for takeoff after high rates for taxi. I am still running in my engines so the first few shake down flights have been pretty tame and they are certification flights as well. I have done a couple of barrel rolls (signed off) but am still to do a loop or split 'S' etc. The barrel roll was a pleasure to see in the air.
So for landing, back to curcit power, gear down, flaps 15, keep the nose below the horizon and fly it home with a trickle of power to the ground.You shoud end up with a beaut nose high touch down on the mains with the stick back to your belly just like the real ones.
I fly off grass and sometimes it is pretty long. This is why I have to use flap for takeoff. If you have a really nice surface to operate off with lots of room then you can leave the flaps for the first few flights until you test their effect at height. Just dont set too much down mix in, if any at all.
My flaps take half a second to deploy 15 degrees.

You have me all 'G'ed up now to fly mine tomorrow.
Let me know how you go and ask away.

Cheers,

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to thonnor)
       Post #: 60

RE: ASM F-7F Tigercat - 3/6/2010 5:20 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Hi Brad, good to see you back online and I hope you had a great holiday.

I'm just starting to paint the TopFlite 1/7 scale dummy engines. In case you haven't got yours yet - they are just a tad to small for a snug fit in the cowl. As an experiment I've wrapped some 3/32 sponge rubber tape (from my local 'Halfords' automotive store) round the outer diameter and now it fits a treat. Will prob use silicone glue to finally fix into place.
Thanks everso for the flight updates....So glad your having fun with her I've set my surface movements up as per instructions and like yourself have 40% expo on high rates. Low rates I have at 80% and 30% expo but after reading you reply I might tone it down slightly!
I've got me flaps set at 15deg for take off and circuit - 45deg for finals. Will set up a bit of mix or the max flap setting only.
I also fly from grass....we have 100 meter patch. In couple of weeks I will have it cut and rolled flat again after our winter.



Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to Brad330l)
       Post #: 61

RE: ASM F-7F Tigercat - 3/7/2010 8:10 AM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Tony/guys,
A couple of hours ago I had flights 5,6 and 7!!!!!!! All without incident with three pretty nice takeoffs and landings of which a couple were caught on vid by my mate Eric with my camera. I will put a bit of a composite vid together and post it on YouTube.
I did have some lower end tuning issues so went a bit leaner on the idle and that appears to be sorted now. I was throttling up and both engines were quiting after taxi to the takeoff point so they were a bit rich down low.
Next is cowls!!!!!! I need to open up the cowl flaps a bit. I will be playing with prop sizes too as I want my engine to operate in the 13-14000 RPM range.

Cheers,

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to thonnor)
       Post #: 62

RE: ASM F-7F Tigercat - 3/7/2010 3:07 PM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Todays flying.

http://www.youtube.com/watch?v=cEqCXElVyHM

A couple of landings to watch and some great close passes.

Cheers,

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to Brad330l)
       Post #: 63

RE: ASM F-7F Tigercat - 3/8/2010 3:20 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Nice Brad ... very nice!
Love the show passes in the second half of the vid.

Hide Signatures

(in reply to Brad330l)
       Post #: 64

RE: ASM F-7F Tigercat - 3/15/2010 12:58 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Spent all this weekend doing the final field preps at our club site. All ready for the spring now.
Yesterday I took the Tigercat up there and gave the engines some more running. Attached is a link to a video clip. I hadn't made any efforts to sync the engines as they're still settling in.
Everything seems to be working correctly so it could be maiden flight next weekend - weather permitting.
I did some taxi tests including some higher speed 'aborted' type take off runs....man this thing accelerates like a scalded cat! ... all very ecouraging


http://www.youtube.com/watch?v=Mlc0Ju-oZQU



Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to thonnor)
       Post #: 65

RE: ASM F-7F Tigercat - 3/15/2010 5:21 PM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Way to go Tony!!!!!!!
It even sounded synced at about 1/2 throttle
Looks good with the extra decal and strips on the wing.
Have you finished painting your dummy radials yet?

Cant wait for the flight report.

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to thonnor)
       Post #: 66

RE: ASM F-7F Tigercat - 3/15/2010 11:49 PM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Hi Brad

Nope ain't finished the dummy radials yet. Been concentrating on getting airframe and engines ready for flight.
Hopefully maiden next weekend but we've got a low pressure coming in now after two weeks of lovely sunshine - typical eh!

I was gonna ask you - did you need full rates on elevator for take off and landing? Just seems like a lot of throw! I remember you said she was a bit difficult to 'unstick' on your maiden. Was this because she was a bit nose heavy? I've set my CG more towards the rear margin with UC up and empty tanks (2 x 12oz tanks). Do you know where your CG has ended up?

Cheers mate

Tony

Hide Signatures

(in reply to Brad330l)
       Post #: 67

RE: ASM F-7F Tigercat - 3/16/2010 4:20 PM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Tony,
On my first flight I used my low rates (60% of 30mm max throws) on elevator, actually all my flights have been on that setting.
The cat was indeed a bit hard to unstick as I had quite long grass to contend with and I have 16oz fuel tanks installed and most of this is in front of the CoG. I was at 85mm balance with a little nose down for the first flights but am now at 90mm after removing some nose weight.
I would confidently use 90mm for the test flight. This cat really is very tame laterally.

By the way, with 16oz of fuel I get start up, a couple of minutes taxi, seven minutes of flight time (3/4 to 4/4 throttle) plus landing with probably enough fuel left for two missed approches and go-arounds,,,,, and maybe a bit more. But not much!!!!!!

You will be fine Tony.

Cheers,

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to thonnor)
       Post #: 68

RE: ASM F-7F Tigercat - 3/16/2010 11:05 PM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Thanks for the info Brad
Low rates it is then ... much prefer to use low rates on a warbird, makes for a much more enjoyable and authentic flight
Ground running with my 12oz tanks gave me about 45 minutes before the tanks ran dry - should be good for a safe 20 minutes air time.

Hide Signatures

(in reply to Brad330l)
       Post #: 69

RE: ASM F-7F Tigercat - 3/17/2010 2:02 AM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Yes with your gassers you will get good flight times

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to thonnor)
       Post #: 70

RE: ASM F-7F Tigercat - 3/20/2010 5:34 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Got one dummy engine done ... seems like it's taken an age to do ... and now I've gotta do it again LOL


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


Hide Signatures

(in reply to Brad330l)
       Post #: 71

RE: ASM F-7F Tigercat - 3/20/2010 6:42 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		The Topflite dummy engines did not come with enough 'push rod' tube to make the HT plug lead housing that runs around the crankcase. I made this from some scrap snake inner,
Managed to source these nice little cowl louvers which I'm gonna set into the cowls for some extra ventilation - two maybe three per side.



Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to thonnor)
       Post #: 72

RE: ASM F-7F Tigercat - 3/21/2010 3:33 AM   
Brad330l



Posts: 2067
Score: 140
Joined: 7/19/2004
Last Login: 6/17/2013
From: Port Hedland WA, AUSTRALIA
Status: offline 		Looks great Tony!

So, is it going to happen this week-end????????
(NO pressure here)

Cheers,

Brad

_____________________________

Visit pilbaraaeromodellers.com
Spitfire Brotherhood # 5

Hide Signatures

(in reply to thonnor)
       Post #: 73

RE: ASM F-7F Tigercat - 3/21/2010 3:48 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Hi Brad

Don't think it's gonna happen tomorrow mate - unfortunately.
Been raining all day today, not gonna be to bad tomorrow but not ideal for a maiden. Think I'm gonna do is take out a couple of other planes and get some stick time in cos I've only had one flight since October! Yes it's been a crap winter here in Blighty! Think I might take the opportunity to test fly a new P40 Warhawk.
Thought of you when I got those engine cowl louvers - they might be of interest to you in helping to cool those OS's of yours? Not sure if Pro Build do international delivery - I'll check in a mo, it's the only place I know that do them.
Did you get any flying in today?

Hide Signatures

(in reply to Brad330l)
       Post #: 74

RE: ASM F-7F Tigercat - 3/21/2010 3:52 AM   
thonnor



Posts: 52
Score: 100
Joined: 9/19/2006
Last Login: 12/24/2011
From: WeymouthDorset, UNITED KINGDOM
Status: offline 		Yes they do International postage

Just incase you're interested ....

http://www.probuild-uk.co.uk/products/store.php?keyword=louvers&manID=

Tony

Hide Signatures

(in reply to thonnor)
       Post #: 75

Page:   <<   < prev  1 2 [3] 4 5 6 7 8 9 10   next >   >>  
All Forums >> RC Airplanes >> Twin & Multi Engine RC Aircraft >> RE: ASM F-7F Tigercat
Page: <<   < prev  1 2 [3] 4 5 6 7 8 9 10   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

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

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


1.187RCU1