RE: DeHavilland Mosquito  
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RE: DeHavilland Mosquito - 3/28/2008 11:22:31 PM   
Montague



Posts: 4632
Joined: 4/19/2002
From: Laurel, MD,
Status: offline 		Not that I'm aware of, but there are plans out there, and you can get kits cut for those plans from some of the kit cutters.


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Kirk Montague Adams
RCCA 560

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RE: DeHavilland Mosquito - 3/29/2008 11:49:44 PM   
kahloq



Posts: 1795
Joined: 1/1/2006
From: Fort Collins, CO, USA
Status: offline 		91 what? 2 or 4 stroke?

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RE: DeHavilland Mosquito - 3/29/2008 11:54:09 PM   
kingair41



Posts: 243
Joined: 1/4/2003
From: Effort, PA, USA
Status: offline 		Thanks for the replies. 2 or 4 stroke would get me in the size I'm looking for. The CMP running 35's-40's is alittle on the small side.

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RE: DeHavilland Mosquito - 3/30/2008 12:02:04 AM   
kahloq



Posts: 1795
Joined: 1/1/2006
From: Fort Collins, CO, USA
Status: offline 		Well, there have been several ppl that have put in 56 size 4 strokes. A saito 82 is the same block size as the 56, so you could easily put two saito 82's in it. That would be pretty overpowered, but would let you spin nice 12x8x3 to 13x8x3 props once broken in.

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RE: DeHavilland Mosquito - 4/7/2008 9:53:34 AM   
Alistair


 

Posts: 54
Joined: 9/23/2004
From: FavershamKent, UNITED KINGDOM
Status: offline 		The saito 82s are nice, powerful and light, I was going to put them in my vq 83" P38 which has recommended engine size 40=46 2 stroke, 60-70 fs.

What put me off was bigger engine = more fuel and I've seen comments that the 82 is juicy. I've got asp 52fs in my flair/cmpro mossie and am going for sait 62as for the p38 but the asp 61 fs is a bit lighter and same size as asp 52

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RE: DeHavilland Mosquito - 4/7/2008 3:35:54 PM   
kahloq



Posts: 1795
Joined: 1/1/2006
From: Fort Collins, CO, USA
Status: offline 		some people have fitting in larger fuel tnaks. I have a saito 56 that can run for 20 mins on a 10.5 oz tank.

(in reply to Alistair)
       Post #: 606

RE: DeHavilland Mosquito - 4/8/2008 4:22:23 PM   
Alistair


 

Posts: 54
Joined: 9/23/2004
From: FavershamKent, UNITED KINGDOM
Status: offline 		I squeezed 12oz tanks in mine, and it was a squeeze! Hopefully on the 52's I should get a comfortable 20 mins flying. Or it might be 20 seconds (i'm not very optimistic regarding the mossie)

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       Post #: 607

RE: DeHavilland Mosquito - 4/9/2008 4:02:31 PM   
havnfun


 

Posts: 20
Joined: 9/26/2002
From: Indianapolis, IN, USA
Status: offline 		Alistair- A reminder: the Mossie is incredibly tail heavy,according to just about everybody, so "usable" weight, as in heavier engines might be useful. Keep your posts coming; it seems that we're in about the same place on the "build schedule", and it's reasuring to have another at a lonely place. I'm wrestling w/ engine choice; I would love to try RCV 60, but I'm not sure if I have the skill to move the firewalls back to accept them.

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       Post #: 608

RE: DeHavilland Mosquito - 4/9/2008 4:24:48 PM   
Montague



Posts: 4632
Joined: 4/19/2002
From: Laurel, MD,
Status: offline 		Moving the firewall on the CMP Mossie would be non-trivial, that's for sure. You might have more luck with a "reverse box", basically cutting in a recessed section. But even that would be hard.

And yeah, watch the CG. The instructions are wrong.


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RE: DeHavilland Mosquito - 4/9/2008 5:00:35 PM   
Alistair


 

Posts: 54
Joined: 9/23/2004
From: FavershamKent, UNITED KINGDOM
Status: offline 		I did see all the comments about tail heavy, and I did out of interest assemble it (without wing tips fitted) to get an idea of how bad the problem was. Even with a big 3000mah battery right in the nose the tail dropped like a stone!
It took one of those hand held 3.6v electric screw drivers in the front to 'balance'. (the only weighty thing i had to hand)
I've put in on board glows (engines are inverted) and instead of the nimh batterys for them will probably put a 2v lead acid battery up front to power the glows and help 'balance'.

A major problem with bigger engines is there just isnt much room for bigger tanks and I do like to have a 'reasonable' time in the air.

One engines still got to run in, once done I intend to run them at full chat on the ground just to see how long the fuel lasts


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RE: DeHavilland Mosquito - 4/9/2008 6:36:09 PM   
pentaxman


 

Posts: 13
Joined: 9/13/2005
From: BraintreeEssex, UNITED KINGDOM
Status: offline 		Alistair.

I can't believe you are worrying about duration on a pair of 52 4 stroke motors.

I run a 52 2 stroke motor on a 10 oz tank in my 3D model and get 3/4 hour of flight.
Rather than adding weight at the front, can you not reduce the weight at the rear in some way?
Sure would help the performance.

Just to keep it relevant I do fly a Mossie, electric powered by 2 x 3S 2100 Lipos which I get 12 mins flight out of.

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RE: DeHavilland Mosquito - 4/9/2008 6:50:17 PM   
Montague



Posts: 4632
Joined: 4/19/2002
From: Laurel, MD,
Status: offline 		Which electric Mossie is that? The ARF from hobby lobby (alpha, I think?) or something else?

There really isn't much you can do to remove weight from the tail of the CMP Mossie. And some people HAVE had them come out close to a reasonable balance point. The key thing is that the CG listed in the instructions is really far off, they use the right number of mm, but measure from the wrong location.


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RE: DeHavilland Mosquito - 4/9/2008 10:44:44 PM   
pentaxman


 

Posts: 13
Joined: 9/13/2005
From: BraintreeEssex, UNITED KINGDOM
Status: offline 		Montague

My Mossie is scratch built from an Ivan Pettigrew plan.
All balsa and fitted with 2 brushless motors and 3 blade props.
Weighs around 90oz AUW with air powered Robart retracts.

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RE: DeHavilland Mosquito - 4/10/2008 8:30:20 AM   
Alistair


 

Posts: 54
Joined: 9/23/2004
From: FavershamKent, UNITED KINGDOM
Status: offline 		Hi Pentax
Sounds good on the duration just I have a feeling they will need to be going full chat most of the time, (that may be wrong).

Nothing much can be done about the tail weight thats for sure (not by me anyway) .


The initial fuel worry was wether to put in bigger engines to help with the balance but the space for tanks is very limited.

Anyway it's all aneamic (as Del boy would say) I'll find out on the maiden flight whats what! And report back!

< Message edited by Alistair -- 4/10/2008 8:40:14 AM >

(in reply to pentaxman)
       Post #: 614

RE: DeHavilland Mosquito - 4/10/2008 6:50:40 PM   
pentaxman


 

Posts: 13
Joined: 9/13/2005
From: BraintreeEssex, UNITED KINGDOM
Status: offline 		Good luck with the maiden Alistair, I hope it goes well for you.

Mossies are quite sleek birds so you should not need to run at full chat all the time.

< Message edited by pentaxman -- 4/10/2008 6:51:15 PM >

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RE: DeHavilland Mosquito - 4/11/2008 5:38:01 AM   
havnfun