solentlife
Pal of mine handed me a CMP 2200mm Cessna a while back and it has sat at back of the storage waiting my fair hands to bring her back to life ...

He had an incident with it which broke the wing seat over top of the windscreen. The glazing was split and lost. Couple of areas in the win had to be repaired where ribs had crushed.

The engine .. RCGF 26cc is still fitted but the muffler was damaged and he lost that in his 'shed'. A few months later he found the wing struts !!

So I now have a fuselage with servos, tank, engine and ignition system fitted - but busted wing seat and no glazing.

The wing I had already repaired for him before he decided to hand the rest to me !!

Wing seat break :

[DSCF8342_zpskw0ts4hs]

As given to me ... with roll of Xray film for replacement glazing :

[DSCF8341_zps5kxgypgb]

26cc RCGF all there except muffler :

[DSCF8346_zpskx7stuit]

Fuel system .. even the spinner !

[DSCF8345_zpsgbvobftp]

Servos in place (to be checked of course) ... note the wing seat bracing pieces laying in bottom that need to be replaced and then bonded into where seat has broken ..

[DSCF8344_zpsygqigzuf]

Cowl that he had and needs strengthening / painting ...

[DSCF8343_zpsmwu4pt4e]

All in all not too bad for a freebie !!

It will be a slow rebuild but eventually well worth it I reckon. I already just found out the the Pitts silencer I bought to fit cannot be installed as it fouls the front nose leg ... so that will have to be sorted ... probably ask pal of mine with metal fabrication business to modify it

Here she is before work starts ...

[DSCF8530_zpsrkkc92hs]

Parts ready to be sorted ... glazing, struts, cowl etc.

[DSCF8527_zpsgn6gz4uj]
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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solentlife
The Wing is held in place by a laminated plywood bridge bonded into the glassfibre cross piece. This creates the insert to the central section of the wing.

I cannot see why they designed it to have a weak point in the centre - which has obviously failed ... you can see in the photo where the V section is in the mid part.

[2200%20cessna%20wing%20mount_zpskuqzlena]

The whole part is 8mm thick and I will create from two laser cut 4mm ply forms. I will not reproduce the V cutout - leaving the form as a continuous bridge - laminating the two together to create the 8mm necessary.

The Glassfibre cross piece will be fixed in position by CA to allow the plywood bridge to be mounted and resin'd into place. This will not only secure the ply bridge but also reinforce the repaired joint. Car filler will then be used to fashion the final exterior joint.
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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solentlife
Laser cutting is so simple ... scan the required item or draw a JPG ... import to vector program and draw the vector lines ... then cut ..

Here's the wing mount being cut 5 mins after scanning the two pieces ..

[Wing%20mount%202200%201_zpslvgtclxx]

Now two have been cut - an old prop plastic bag ... smear PU glue on one ... put together inside the bag and clamp to set.

[Wing%20mount%202200%202_zpsa682q3s5]

I have already tested in place and they fit perfect.
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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Wildthing
Looks like a nice project
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solentlife
Mount is now in place with Chopped Strand Mat resin in the corners to build up those weak points. Once set - I will dribble Epoxy resin in to set all edges and seats, then once thats set - Pu glue with small amount of water mixed in to expand into all the crevices etc. creating a strong foam filled area.
PU adds very little weight and saves all that resin being used up !!
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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solentlife
Testing the wing centre section reveals that the original mount is 'slack' ... I have copied the original but its definitely not IMHO enough for long life ! That cross brace is fitted into quite a small structure and relies on that A pillar at side of windscreen.

[DSCF8533_zpsrdwrprck]

I am considering adding another former to back that up and to include two front wing bolts to blind nuts. Making the wing secured not only by alignment of the front studs - but also 4 wing bolts.

The wing itself cleverly breaks down to 3 sections ... so no big deal to fix the centre section more securely for occasional access.

Joint bolts seen here :

[DSCF8534_zpsnuuhdlwg]

Sections :

[DSCF8535_zpsvgcrladx]

Here centre section is in place but not fixed ...

[DSCF8536_zpsfxvqhju3]

My idea would be to place the forward wing bolts into the front corners so as to use the support of the outer ribs. I may cut back into the covering to insert ply plate across that front section slotted into all ribs.

I tested all servos and all except the 'engine choke' servo work fine.
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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solentlife
Testing the wing centre section reveals that the original mount is 'slack' ... I have copied the original but its definitely not IMHO enough for long life ! That cross brace is fitted into quite a small structure and relies on that A pillar at side of windscreen.

[DSCF8533_zpsrdwrprck]

I am considering adding another former to back that up and to include two front wing bolts to blind nuts. Making the wing secured not only by alignment of the front studs - but also 4 wing bolts.

The wing itself cleverly breaks down to 3 sections ... so no big deal to fix the centre section more securely for occasional access.

Joint bolts seen here :

[DSCF8534_zpsnuuhdlwg]

Sections :

[DSCF8535_zpsvgcrladx]

Here centre section is in place but not fixed ...

[DSCF8536_zpsfxvqhju3]

My idea would be to place the forward wing bolts into the front corners so as to use the support of the outer ribs. I may cut back into the covering to insert ply plate across that front section slotted into all ribs.

I tested all servos and all except the 'engine choke' servo work fine.
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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solentlife
Overnight the CSM and resin has hardened up along with the Epoxy dribbled in. I have really put some stress on that bridge and I cannot get a squeak out of it !

The Wing dowels - I have put silicon tube on to give some cushioning in the guide holes as it was obvious from the original that this was a problem area.

All servo leads have been amended (I have crimper and plug sets) to allow each wing section to be removed but centre remain in place.

[Final%20wing%20work%201_zpszz3i05ac]


[Final%20wing%20work%202_zpsn0aafeiu]

Slide on - connect - secure with locking screws.

[Final%20wing%20work%205_zpsul8qmido]

[Final%20wing%20work%206_zpsrdfqtais]

[Final%20wing%20work%208_zpsih9a7y6k]

Glazing ... muffler and Cowl to sort. Then its paint.

AUW at this stage (minus muffler. RX, fuel, cowl, glazing) is 6.43kg ... so I am expecting an all up weight less fuel to come in about 6.55 - 6.60kg. Add fuel and she's well under 7kg. Not too bad for a 2200mm span.
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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solentlife
Removed the dedicated ignition 4 cell AA NiMh pack from the firewall ... put meter on it ... 5.02V

Amazing after all these years - its still alive !!

Previous guy had it hard wired to the Ignition with of course switch to disable. Wiring is now a JST plug and socket ...

Cowling is receiving multiple spray coats of Fuel Resistant lacquer White. Looks really nice ...

Intention is to personalise the cosmetics when finished. Too many 'US' registered versions out there. Literally go to a fly-in ad you have different brand / size Cessna's and all have same registration !!

Checking online - there are many different colour schemes ...

Front glazing has a compound curve to it so trying to fashion X-Ray film to create wasn't successful. The original is split, lost various bits along edges etc. Searched in my 'Freebie bin' for clear stiff plastic and started cutting / adding to the original glazing. Clear tape inside away from fuel and strong glass fibre re-inforced hinge tape on outside soon had a workable front screen. Luckily the main part is complete - with paint - the tape can be covered up and sealed.

Its most likely that I shall use an ex flight LiPo with BEC to power RX .. every time I touch the model she teeters on her wheels telling me she's very rearward CoG. It may be an idea to bring a LiPo up onto the firewall instead of the NiMh ignition pack.... with a dual BEC setup ... one for RX and other for ignition. I did this in my Zlin Z50 and works a treat.

Still searching for a muffler to fit .. and found a universal one ... with exhaust straight down from the box design ... perfect with a spacer between engine and muffler ...

https://www.ebay.co.uk/itm/Aluminum-side-muffler-for-26cc-42cc-gas-engine-rc-plane/143333613125



Once I have most sorted - have to install pilot .... nothing worse than a large model with nothing in the shop !! I have a few pilots in my box ... plus can 3D print some interesting ... toss-up between a redhead girl or blue-eyed boy at present !!
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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solentlife
Nearly there ... cowl just needs couple more coats and then stripes ...

Wing needs new antenna on top ...

Muffler ... ignition power .... Rx and change choke servo ... new throttle arm ....

Remove existing glazing, fill few cracks and then give fuselage complete white spray job ... then decals / stripes.

[2200%20Cessna%20nearly%20there%201_zpsfjlzutco]

Install Pilot and possibly dash .... need to go online and download a 182 dash to print up.

thinking this may do the job ...

[2200%20Cessna%20nearly%20there%205_zps0ifkdzld]

I'm actually quite pleased .... its coming up at least moderately presentable !!
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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Wildthing
That looks really good, you did a wonderful job
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solentlife
I'm starting to wish I had started this much earlier ........... its been sitting waiting nigh on 2 years for me to do something.

Yes - I'm pleased with it ... tks "Wildthing" ... 

Remains to be seen if I can keep her in one piece  .... obviously this is no parkflyer and needs serious flight area.
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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Wildthing
solentlife wrote:
I'm starting to wish I had started this much earlier ........... its been sitting waiting nigh on 2 years for me to do something.

Yes - I'm pleased with it ... tks "Wildthing" ... 

Remains to be seen if I can keep her in one piece  .... obviously this is no parkflyer and needs serious flight area.


You will be fine, I have faith in you. 
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DualDesertEagle
solentlife wrote:

Remains to be seen if I can keep her in one piece  .... obviously this is no parkflyer and needs serious flight area.


If u feel uncomfy flying this thing on ur own u should have someone who is used to flying this kind of model stand by to take control in emergency situations until u've got the hang of it.
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solentlife


If u feel uncomfy flying this thing on ur own u should have someone who is used to flying this kind of model stand by to take control in emergency situations until u've got the hang of it.


Appreciate the reply ... 

I was actually joking about the flying ... I think after ~55yrs of model flying I might stand a chance !! I actually have 5 Cessna's of various sizes ... 
I'll fly anything if I can launch it ! Youtube : solentlifeuk
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