Tony Nijhuis Vulcan

Models built from commercial plans
Colin
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Posts: 138
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Tony Nijhuis Vulcan

Post by Colin » Thu Oct 02, 2014 6:13 pm

Well I've bitten the bullet and got everything I need to build Tony Nijhuis' 48" Vulcan as featured in this year's RCM&E Special.

As those of you who have read the article will know it is offered either as a twin pusher or EDF variant and I will be going for the EDF version which uses 4 x 50mm fans.

I don't know how long this will take - hopefully will be done by Christmas as Sue will want her dining table back !!

So on to a few pics.

Firstly what do we get for the £££ ??

2 large sheets of plans (better than working from the magazine plan ...)
1 - Plans.jpg
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The CNC cut parts ...
2 - CNC parts.jpg
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The parts (done by SLEC) are milled for the ply...
3 - Milled ply.jpg
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and laser cut for Liteply and balsa ...
4 - Laser cut balsa.jpg
4 - Laser cut balsa.jpg (59.02 KiB) Viewed 12508 times
Finally we have the vac formed parts -
5 - Vac formed parts.jpg
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Colin
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Posts: 138
Joined: Mon Dec 17, 2012 4:45 pm

Re: Tony Nijhuis Vulcan

Post by Colin » Thu Oct 02, 2014 6:26 pm

OK so that's the parts covered - now for the power side.

I decided to use the Dr Mad Thrust units that TN recommends in his article but instead of using 4 x ESCs I used the suggestion of 'Electriflyer' from the modelflying forum and am using a quadcopter unit.
6 -  EDFs and ESC.jpg
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In Electriflyer's case, (and if you don't know Electriflyer is Roy who runs Nitroflight in Rotherham), he did a bit of butchery to parallel up the 4 ESC connectors, but I found that Hobbyking do a similar unit that comes with a little 4-way unit, ('Throttle hub'), that combines the inputs into a single connector.
7 - Throttle Hub.jpg
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Colin
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Posts: 138
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Re: Tony Nijhuis Vulcan

Post by Colin » Thu Oct 02, 2014 7:52 pm

OK - on to the first job.

This is a one-piece model and the big question is - 'will it fit into my car'. The boot does not have much room to start with, and looking at the plane, with the EDF thrust tubes running full length of the wing it would be hard to get a spar in to change the model to have detachable wings.

Waiting till it's finished would be too late, so its a case of raiding Sue's stock of card for the Guides and getting busy with the scissors and Sellotape. (Other brands are available!)

The result ...
8 - Mock up.jpg
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And the good news is that it will fit !

So next job is to change the connectors on the EDF units so I can test them. 4 x EDFs = 12 x bullet connectors to take off and replace = 12 chances to burn my fingers... again!

Colin
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Posts: 138
Joined: Mon Dec 17, 2012 4:45 pm

Re: Tony Nijhuis Vulcan

Post by Colin » Thu Oct 09, 2014 9:57 pm

Well an evening in front of the telly with a soldering iron has seen me managing to swap all 12 plugs with not a single burn!

And it all seems to work. They are all loose at the moment so have not tried WOT but there does seem to be some oomph there.
10 - EDF Units and ESC 2.jpg
10 - EDF Units and ESC 2.jpg (62.3 KiB) Viewed 12486 times
So the next job is to cut the ply parts free and match them to the plan.

Colin
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Posts: 138
Joined: Mon Dec 17, 2012 4:45 pm

Re: Tony Nijhuis Vulcan

Post by Colin » Fri Oct 10, 2014 4:59 pm

Well I have now hit my first problem - the formers supporting the fan units have holes cut in them for the fans but it is 2mm under size. Surprised at this because I am using the units that Tony recommended.

It's a bit of a challenge as this means that the outboard fans are very close to the former edge - there was supposed to be 3mm obechi framing to the former but there will be very little room for any framing where the EDF is so will need to look for some other way to reinforce the former.

Colin
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Posts: 138
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Re: Tony Nijhuis Vulcan

Post by Colin » Sat Oct 11, 2014 3:06 pm

Discussing this problem with Tony it would appear that the EDF units have changed since he bought them and the outer diameter has changed from 53mm to 54.5mm - hence the problems.

Colin
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Posts: 138
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Re: Tony Nijhuis Vulcan

Post by Colin » Wed Oct 15, 2014 11:12 am

Well all parts now cut out and identified, and the EDF cut-outs suitably enlarged.

I was worried about the larger holes getting too near the edge of the former meaning either the former would end up in two parts or else the flange on the EDF unit would extend beyond the former and need grinding down, but by sanding on the inboard side of the holes, I effectively moved them in by 1.5mm and the taper of the former gave me the extra clearance I needed.

Anyway, all I need to do now is glue the bits together - simples !
11 - Cut Parts.jpg
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Colin
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Re: Tony Nijhuis Vulcan

Post by Colin » Thu Oct 16, 2014 1:14 pm

Ok - so have now got out the glue and stuck a few bits together. The fit seems to be excellent so hoping the rest is as good.

Everything drying now ready for top sheeting before turning over and installing the EDFs and ESC.
12 - Centre Section 1.jpg
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Colin
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Re: Tony Nijhuis Vulcan

Post by Colin » Sun Oct 19, 2014 4:40 pm

Well a bit more done now and the centre section is now ready for fitting the EDF units and thrust tubes...
13 - Centre section ready for EDF units.jpg
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Colin
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Re: Tony Nijhuis Vulcan

Post by Colin » Sun Oct 19, 2014 4:42 pm

So onto the nose section.

Of course the beauty of CNC parts is that you can quickly turn this ...
14 - Nose parts.jpg
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...into this ...
15 - Nose assembled.jpg
15 - Nose assembled.jpg (59.97 KiB) Viewed 12442 times

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