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        Build Log T-45 Goshawk (BAe Hawk) (90mm) by CMP

#1 Herb Nov 09, 2010 06:05 PM

T-45 Goshawk (BAe Hawk) (90mm) by CMP
 
12 Attachment(s)
I just received this new CMP / CMpro T-45 arf, I have the CMP Spitfire and I like it ...

This thread in German :) or Italian

It is almost identical to the Hobbyking Hawk (also made by CMP or China Model Products : http://www.cmpairplane.com/ ) up to the paint ;)

http://www.cmpairplane.com/

http://www.nitroplanes.com/cmpfitedfjet.html

http://www.hobbyking.com/hobbyking/s...40mm_ARF_.html

http://www.scaleflying.com/BAE-HAWK-...F-_p_2506.html

http://hobbyfly.de/en/rc-airplanes-1...40mm-6685.html

The Spit is a bit on the heavy side :eek: , but it seems now this Hawk is made relatively light(er) ...

The wing area on the T-45 is 24dm^2, so that makes the wing +33% larger in surface than the Sapac T-45.

Wingspan = 114 cm = 46 ''

Length = 122 cm = 49 ''

Wing area = 24 dm^2 = 372 sq in

Approximate scale 1:9

Est. weight rtf 7.2 - 8.0 lbs


CORRECT CG AFTER ONE YEAR OF FLYING:
ca. 110-115 mm from wing leading edge at root (see picture below)


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Short video (8S, HET fan) Dec. 2011 (more T-45 videos on youtube under user "Herbzqy" )

T-45 Goshawk 90mm EDF by CMP (Neu 1515 on 8S) (3 min 0 sec)


Short video (6S, WeMoTec fan) Nov. 2011:

T-45 Hawk 90mm by CMP (BAe Hawk) Aerobatics (3 min 22 sec)



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#2 Steph280 Nov 09, 2010 06:06 PM

This might be the first plane for my venture into 90mm EDF. Love to see what you do with it Herb...

#3 Herb Nov 09, 2010 06:38 PM

Steph, you will like it ... Big fuse with a small wing though :)

The upside is that there's no painting to do ...

#4 Herb Nov 09, 2010 06:47 PM

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I did weigh all the components, the FG fuse is by far the heaviest part.

The wing & tail surfaces are very light :)

wing : 10.4 oz

fuse 32.8 oz

canopy 2.8 oz

fairing 1.0 oz

ducts 7.0 oz

droptank 2.3 oz

tail surfaces 1.4 oz

ventral fin 1.2 oz

misc. parts 7.0 oz (incl. fixed l.g. / wheels!)

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Empty bare frame w/o gear & electronics = 58 oz = 3.65 lbs = 1.63 kg

I think I will save some weight by omitting droptanks, ventral fin & fairing ;)


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#5 Herb Nov 09, 2010 06:58 PM

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The intake area is around 63.2 sq cm, so that's 124% of a DS-51 fan fsa.

For a 90mm fan they could have made the intakes a bit smaller ;)

The WeMotec Midifan fits perfectly, I wish a Neu 1515 (edf, open case) would fit in it, I might have to go the HY shroud route again to get the Neu to fit.

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#6 Herb Nov 09, 2010 07:09 PM

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The inside is well done, plenty of ply reinforcements to keep the fuse rigid.

The reinforcements are - as usual in these kind of kits - glued in with some sort of hotglue.

There is a ton of space for batteries, but ultimately the battery size is of course determined by what kind of weight that small wing can carry

... 12S 5000 oh yes of course :rolleyes:

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#7 Herb Nov 09, 2010 07:14 PM

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The wing is well made and very light (10oz) ... There's servo hatches for both ailerons & flaps.

Add a lot of un-needed weight to this plane & the retracts will come out the other side of the wing on a hard landing ...

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#8 Herb Nov 09, 2010 07:19 PM

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Size comparison with the Sapac Hawk / T-45 , a bit bigger but not by a whole lot ...

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#9 Herb Nov 09, 2010 07:24 PM

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One of the strong points of this kit is - besides the price - the nice finish on the fuse & wings - not much painting to do, unless you want a Bae Red Arrows Hawk instead :D

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#10 keith b Nov 09, 2010 08:47 PM

Herb since your not going to use the drop tank ventral fin and hook and hatch would you be interested in selling those items to me for another project.
Please PM me
Thanks
Keith

#11 AIR SALLY Nov 09, 2010 11:01 PM

thanks Herb for doing this .great pics :popcorn:

#12 Steph280 Nov 09, 2010 11:04 PM

Herb what retracts do you plane to use for the 'smooth' runway of Fairview?

#13 AIR SALLY Nov 09, 2010 11:04 PM

Quote:

Originally Posted by Herb (Post 16511181)
The intake area is around 63.2 sq cm, so that's 124% of a DS-51 fan fsa.

For a 90mm fan they could have made the intakes a bit smaller ;)

The WeMotec Midifan fits perfectly, I wish a Neu 1515 (edf, open case) would fit in it, I might have to go the HY shroud route again to get the Neu to fit.

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Tam Jets has a shroud that fits the midi rotor and the 1515 motor ...kinda pricey but it has a built in heat sink to protec your motor investment ...he also has one to fit the 1415 motor....which now come standard with cooling holes

#14 Herb Nov 10, 2010 01:11 PM

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Rodger, yes the ducst have seams.

They are surprisingly well made, comparable to some of the best I have seen.

As I said, the only possible issue is perhaps that they are very light and there could be inevitably someone - perhaps without a whatmeter - that will eventually manage to implode them with a loud bang ;)

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#15 keith b Nov 10, 2010 01:11 PM

Hello Herb waiting to see your build and very interested in those parts your not going to use please let me know about those.Im sure this one will fit right in with the rest of your great looking planes.

Keith


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