Author Topic: Rafalroo (Read 2204 times)

firefox123 · « **on:** March 05, 2012, 01:40:01 AM »

does anybody no the controll settings for the rafalroo thanks

Norfolk'n'Good · « **Reply #1 on:** March 05, 2012, 01:46:48 AM »

Elevons about 8mm either way and if you can set your TX to have 3mm up on take off it helps a lot and switch it out once you have both hands on the TX. SC46 a perfect engine it will just pull away from an under arm launch.

firefox123 · « **Reply #2 on:** March 06, 2012, 23:48:16 PM »

Thanks for that

Has anybody put electric in this model ?

Norfolk'n'Good · « **Reply #3 on:** March 07, 2012, 09:52:16 AM »

There was a lot of talk about electrifying Gremlins and whilst they were able to achieve comparable performance with the opilies their flight time was short but I have seen a scaled down Rafalroo done by Muffler on here which was electric and from from depron which went well.

firefox123 · « **Reply #4 on:** March 13, 2012, 19:50:22 PM »

OK Just started a rafalroo this will be electric 1600w motor running on a 3s 4500 with 9-6 folding prop and 50amp speed controller
Please feel free to comment

Norfolk'n'Good · « **Reply #5 on:** March 13, 2012, 20:10:25 PM »

I know virtually nothing about electrics so cant comment on that part really

Got any build pics? They don't take long to put together it's possible to build one in a day if you get a move on. My last 2 were covered in Koverall and dope then painted with warbirds colours and I was surprised to see how light it was when finished

firefox123 · « **Reply #6 on:** March 13, 2012, 20:14:49 PM »

Ah pictures yes I have some just need to find out how to post them?

Norfolk'n'Good · « **Reply #7 on:** March 13, 2012, 20:16:45 PM »

When you click reply under the text box there is a "attachments and other options" from there you can browse your hdd for the file and post, just to the right is how the picture will be displayed.

firefox123 · « **Reply #8 on:** March 13, 2012, 21:32:11 PM »

Thanks !

Si_B · « **Reply #9 on:** March 13, 2012, 22:29:14 PM »

Mine died at the weekend after nearly 2 years of service.

Be interesting to see how yours goes with that set up. Not sure I'd bother with the folding prop. What sort of watts are you going to be pulling?

Cheers
Simon

firefox123 · « **Reply #10 on:** March 14, 2012, 22:22:00 PM »

How did that happen ?

I hope to get 1200watts from it but we will see I may change the folding prop as it is giving me a few issues ! Or I may have to extend the nose a little

Norfolk'n'Good · « **Reply #11 on:** March 14, 2012, 22:33:55 PM »

You should have no issues lengthening the nose the glow version has the battery pack 1/2 way down the fuselage so can be moved rearward easily to account for a longer nose. TBH my last 2 were extended about 1 1/2" IIRC and look better for it.

Si_B · « **Reply #12 on:** March 14, 2012, 22:54:46 PM »

I'm not sure a 3s set up is going to cut it to be honest. Here are a few notes from the Mayhem area from a chap who electrified his Gremlin. I would think a similar set up would be required for a Roo.

Quote

Thank you for your reply, the motor is one of these -
http://www.giantcod.co.uk/epower-2826-950kv-brushless-outrunner-motor-p-402705.html
13 x 6" prop which I will try & may change to a 12 x 7", 55amp esc, separate bec & 4s 4000mah lipo.

or

Quote

On a 950kv motor you're going to be struggling for speed on 4S with any of those props. I'd be looking at a 10 x 10 as a starting point but thats probably going to make it hard to hand launch. In very round figures and only according to my experience a 6" pitch prop will give you the speed you need on 4S with a 1400 kv motor if you can find one that will deliver around 1kW for a full size gremlin.

Tis a tricky one which has defeated those cleverer than me (but not as stubborn )

with the 950kv motor i'd personally be looking at a 5S or 6S setup with a smaller prop to get the revs - but i'm really not at all an expert I just like to experiment really

This is what the chap posted after his test flights

Quote

I have changed the prop to a 12 x 8", I flew it at Osbournby not to long back at their fly in, I only used 40% of the battery as I was helping somebody trying to start a glow engine that didn't start
I wouldn't say it was quick as all of the models, one had a west 50 with a pipe but I was pleased with the performance, it couldn't have been to bad as the oily boys didn't take the pi$$!
With the higher pitch prop it does need to be well coaled up to get the climb.

I'm not sure you are going to get the performance on 3s, or you will be pulling a lot of amps.

firefox123 · « **Reply #13 on:** March 15, 2012, 21:18:40 PM »

Thanks for that
It's a lot to think about but I will have to put a watt meter over it and see what I get maybe will have to be 4s

firefox123 · « **Reply #14 on:** March 26, 2012, 19:24:06 PM »

Can anybody tell me the auw of the rafalroo thanks

Norfolk'n'Good · « **Reply #15 on:** March 26, 2012, 19:29:48 PM »

Just put one of mine on the scales which has a Super Tigre 45 in and all gear and is covered in Koverall dope and painted it is 3.7Lb

firefox123 · « **Reply #16 on:** March 26, 2012, 19:38:55 PM »

Ok thanks

firefox123 · « **Reply #17 on:** April 06, 2012, 18:52:27 PM »

]OK photos of my roo

ah files to large heeeeeeeeeeelp

firefox123 · « **Reply #18 on:** April 08, 2012, 18:26:12 PM »

can somebody help me make my files smaller so i can post them

DarrellW · « **Reply #19 on:** April 08, 2012, 19:21:01 PM »

Quote from: firefox123 on April 08, 2012, 18:26:12 PM

can somebody help me make my files smaller so i can post them

If you are on Win7 / Vista if you double click the file it should open in Picture manager, go to Edit picture and select change size - if you select Document it should still give reasonable quality and be small enough to post.

Joey · « **Reply #20 on:** April 08, 2012, 19:36:12 PM »

PDF them, that will work

Norfolk'n'Good · « **Reply #21 on:** April 08, 2012, 21:17:52 PM »

There are lots of bits of free software for resizing pictures, take a look at power toys for windows or just google free image resizer.

firefox123 · « **Reply #22 on:** April 20, 2012, 22:58:58 PM »

well here we go

firefox123 · « **Reply #23 on:** April 20, 2012, 23:01:48 PM »

firefox123 · « **Reply #24 on:** April 20, 2012, 23:04:52 PM »

and more
needed some orientation stripes or in my case curves !!

Norfolk'n'Good · « **Reply #25 on:** April 20, 2012, 23:11:36 PM »

Oh now I do like that

What covering did you use? Painted I guess?

firefox123 · « **Reply #26 on:** April 20, 2012, 23:45:34 PM »

Its covered with poly-c then painted with acrylic undercoat then rubbed down with 2000 wet and dry

Norfolk'n'Good · « **Reply #27 on:** April 20, 2012, 23:54:47 PM »

Very nice it puts mine to shame

also much nicer without a dirty great exhaust hanging out the side, let us know how you get on flying it but remember to launch at the angle in my 1st picture

firefox123 · « **Reply #28 on:** April 21, 2012, 00:09:13 AM »

Have already flown it 10 times now !
had to have my son hand launch it first few times to get it trimmed in !
now i am able to launch as you do in your photo !!
fly really fast has 1065 watts draws 50amps on 6s 3500 lipo and has 12x11 folding prop .

Norfolk'n'Good · « **Reply #29 on:** April 21, 2012, 10:07:34 AM »

Don't know much about watts/amps

must be like 2 or 4 star

So what's your verdict about the build and how it flies? When I drew up the 1st plan I used specialised calculations like.............. yer that looks about right

the C of G was worked out mathematically though using IIRC Gordon Whiteheads formula in his book RC Scale Aircraft and it was right the 1st time.
I keep messing about with the idea of making a scaled up version from Jabolite covering it in brown paper and fitting a petrol engine, may need a single retract on the nose to stop the big prop breaking.

chaz2b · « **Reply #30 on:** April 21, 2012, 17:50:27 PM »

Quote from: firefox123 on April 20, 2012, 23:45:34 PM

Its covered with poly-c then painted with acrylic undercoat then rubbed down with 2000 wet and dry

are we talking...it`s painted straight onto the wood? or did you tissue cover first? love the scheme..looks...like you don`t want to it`s target !

chaz@2b

Ekko2 · « **Reply #31 on:** April 21, 2012, 19:00:12 PM »

Model looks great. Just wondering where you got the canopy?

Dave

firefox123 · « **Reply #32 on:** April 21, 2012, 19:47:52 PM »

OK first question no its not painted onto wood I used nylon and poly-c and wet and dried between coats
Second question the canopy is from a f15 cut down to fit and the edges of the model built up to help mold it in

firefox123 · « **Reply #33 on:** April 21, 2012, 19:51:31 PM »

Quote from: Norfolk'n'Good on April 21, 2012, 10:07:34 AM

Don't know much about watts/amps must be like 2 or 4 star

So what's your verdict about the build and how it flies? When I drew up the 1st plan I used specialised calculations like.............. yer that looks about right the C of G was worked out mathematically though using IIRC Gordon Whiteheads formula in his book RC Scale Aircraft and it was right the 1st time.
I keep messing about with the idea of making a scaled up version from Jabolite covering it in brown paper and fitting a petrol engine, may need a single retract on the nose to stop the big prop breaking.

fun to fly and you can build it with your eyes closed would recommend it to all for fun !

Norfolk'n'Good · « **Reply #34 on:** April 22, 2012, 09:09:46 AM »

I'm glad you like it Firefox and always good to get a unbias opinion cheers

I think with an electric the nose length could be extended quite a bit which would enhance the looks.

I ended up making my own canopies from pop bottles shrunk over a former which worked pretty well.

firefox123 · « **Reply #35 on:** April 22, 2012, 10:24:21 AM »

The nose on mine was extended by 1.5" to make it look a little better

What do you use to heat the bottle up over the former and does the screw top give any problems when moulding ?

Norfolk'n'Good · « **Reply #36 on:** April 22, 2012, 10:36:51 AM »

I just used an ordinary film heat shrink gun but I would think even a paint stripping gun would work at a distance. The screw top was not a problem I firstly wedge the bottle over the plug as hard as I can then heat it a bit at a time and the bottle shrinks right down tight on the plug.
I think the nose could be lengthened quite a bit on a glow powered as I had my batteries well forward to perhaps 1 1/2" would be possible on the glow version to putting the battery as far aft as possible.

firefox123 · « **Reply #37 on:** July 06, 2012, 21:35:08 PM »

can i fly the rafaloo with out the Cunard's things will it upset the flying at all

Norfolk'n'Good · « **Reply #38 on:** July 07, 2012, 08:50:55 AM »

Personally I have never flown them without but I would imagine if you moved the C of G back 1/4" or so it would fly without but they are a lifting section so maybe the C of G would need to go further rearward I just don't know

firefox123 · « **Reply #39 on:** July 16, 2012, 19:48:10 PM »

OK after doing a stupid move on my sticks i lost the rafalroo complete carnage !
so i decided to do something again on the building board so her] is my deltaroo :uk
also the decals i have done on my printer (hope ebay dont mind ) The deltaroo will be white on top and grey on the bottom as you can see no little wing things !

Author Topic: Rafalroo (Read 2204 times)

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