Fly Fly Hawk MK127 build log - RC Groups
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May 10, 2012, 05:36 AM
Registered User
NickM91's Avatar
Discussion

Fly Fly Hawk MK127 build log


G'day,

Just a thread to log my fly fly hawk mk127 build for anyone that's interesting.

Plan for the build is:
  • New nose
  • scale antennae pitot probe etc
  • Spackled, glassed with WBPU,
  • RAAF 76 SQN 2 tone grey paint scheme
  • Gear doors etc (eventually)

Hoping to keep it light and power by a ChangeSun 90mm edf unit running on 5S (i'm not after extreme speed at this stage, no doubt that will change in the future.


The goal:


What I've got to work with:


The progress:

New nose cut out of Depron









Theres a lot more work to be done, the new nose still needs final shaping and sanding, attaching to the forward fuse, and spackle etc.

I've put a carbon ribbon spar in the wing as well.

Hoping to cut out flaps in the next few days and mod the wing tip to replicate the MK127

PS I have an issue with the landing gear, the supplied electronic retracts accept a larger diameter rod than what the fly fly oleo legs can receive, is it okay to drill out the oleo's or am i going down the path of breaking screwing them? At this stage they will sit in securely, but as the gear leg (the small rod that actually goes into the retract unit) is not a snug fit there is a fair amount of slop. Any ideas?
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May 11, 2012, 01:44 AM
dro56595@bigpo's Avatar
Good start!

I've drilled out an oleo strut before with good result, but that's about the limit of my metal bashing skills. Always better to have a thicker, stronger rod ...
May 12, 2012, 09:18 PM
6 months to finish a rtf
pulsery2k1's Avatar
nice work

I converted one of my 50mm hawks and I'm thinking about
doing my Fly Fly hawk like this also
May 13, 2012, 06:31 AM
Registered User
I've been thinking about doing exactly the same thing!!!

Looking forward to seeing how it comes out

Thanks

Dave
May 13, 2012, 07:20 PM
Registered User
NickM91's Avatar
Nice work on that 50mm version pulsery

I've done a bit more work on the nose over the last day or so. It's now glued on. Still in the halves though.

I need to sort out my landing gear, having not heard back from the shop I bought them from after a few days. I've had another look and there is way WAY too much slop in them. I suppose I'll be drilling oleo's today. Then hopefully I can get the nose glued together and finish shaping and start spackling, filling.

What are people thoughts on flaps? I'd love to have them for the scale look + cool factor, but I'm on a very tight timeline to have this finished before work commitments mean no modelling. I'm worried I might not be able to get it done in time if I start hacking into the wing etc.

Cheers

Nick
May 13, 2012, 07:25 PM
6 months to finish a rtf
pulsery2k1's Avatar
Well on flaps , I've seen this fly and they not really needed.
I will install them as we have a very short runway.

but you can always add them when time permit's
May 13, 2012, 09:19 PM
Registered User
Hi Nick and others ,
I have just started my FlyFly Hawk this week as well. Was going to keep
it red and white, best visibility for these older eyes, but seeing the Mk 127 colour scheme...well second thoughts, I will follow with interest.
I have a Flyfly MB339 in the current flying roster. It was a long, long build but has certainly been worth it. Its a great flyer and a real "pussy."

I have just got my Changsun 12 blader fan and matching 1600kv motor in for the Hawk .Going with 6 cells as I have them for the MB339.
Also will be playing around with a joining rod for retracts and kit supplied oleo
struts. May well have a look at changing the wheels as the ones on the MB339 are wearing out fast.

If any body is looking for a FlyFly Hawk kit at the right price I have another
one (and a F 86 ) still in the box. Bought two of each !!

Regards
Tony
May 14, 2012, 01:39 AM
Registered User
NickM91's Avatar
Oleo's drilled out successfully.

Still looking to join the nose halves together this evening
May 14, 2012, 02:27 AM
Registered User
Hi Ernie,
Tried to reply to your private message but evidently your in box is overloaded and needs
clearing.
Asking $120 for the Hawk kit.
Regards
Tony
May 14, 2012, 03:48 AM
Registered User
NickM91's Avatar
Added some carbon rods to the fwd fuselage/nose, felt like an easy snapping point.

Also tested the retracts, they all function correctly however I have encountered a snag with the nose retract.



The torque link hits the electric drive mechanism (see photo below) any ideas how to overcome this?



I still have the included mechanical retracts, but was hoping to avoid using that. Also was thinking I could slave the steering servo to turn as it is retracted. That however means having nose wheel steering and rudder on a different channel. Seems a pretty poor design for this to occur, this is after all one of the models the oleo's and retracts were designed for.
May 21, 2012, 04:32 AM
Glow? What is that?
Here is my detail wrt my Flyfly Hawk mk120

https://www.rcgroups.com/forums/show...&postcount=279
May 21, 2012, 04:55 AM
Registered User
Quote:
Originally Posted by Blizards316
Here is my detail wrt my Flyfly Hawk mk120

https://www.rcgroups.com/forums/show...&postcount=279
Looking really good - cant wait for the report on the maiden - try to get some pics
May 21, 2012, 07:21 PM
Registered User
NickM91's Avatar
Looks good blizards!

Updates on mine:
Top layer of wing is glassed, bottom still waiting
Wing tip missile rails added
Nose is more or less complete, awaiting glassing and paint.

Don't think I'll be able to finish it before work commitments take over indefinitely.

Cheers
May 21, 2012, 10:37 PM
Hawk Fanatic
SkylineFlyer's Avatar
Quote:
Originally Posted by NickM91
I still have the included mechanical retracts, but was hoping to avoid using that. Also was thinking I could slave the steering servo to turn as it is retracted. That however means having nose wheel steering and rudder on a different channel. Seems a pretty poor design for this to occur, this is after all one of the models the oleo's and retracts were designed for.
After using some tools that i had in my shop, this is how I got around it. Ignoring the strut I used, pay close attention to how to I shortened the module on the retract to allow the wheel (or in your case, the strut) to retract fully.

https://www.rcgroups.com/forums/show...6&postcount=36


OR YOU COULD TRY THIS - ITS EASIER

https://www.rcgroups.com/forums/show...3&postcount=26

So, there, I've given you two of MY ideas. Use them.
Last edited by SkylineFlyer; May 21, 2012 at 10:47 PM.
May 21, 2012, 11:13 PM
wannabe Jet guy
CRCJA's Avatar

Turn it around.


I had the same problem with the strut when I used them on the Fly Fly Hunter. The solution was to turn the scissor around on the strut so that it was facing towards the back of the plane.

Ralph


Quote:
Originally Posted by NickM91
Added some carbon rods to the fwd fuselage/nose, felt like an easy snapping point.

Also tested the retracts, they all function correctly however I have encountered a snag with the nose retract.



The torque link hits the electric drive mechanism (see photo below) any ideas how to overcome this?



I still have the included mechanical retracts, but was hoping to avoid using that. Also was thinking I could slave the steering servo to turn as it is retracted. That however means having nose wheel steering and rudder on a different channel. Seems a pretty poor design for this to occur, this is after all one of the models the oleo's and retracts were designed for.


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