Mr Dawe's Centurion.

Forum for discussion relating to the Centurion
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

A good mornings work
Attachments
The exhaust heat shields, these need to be demountable and of scale thickness, I'm guessing the real things would have been around 16 gauge
The exhaust heat shields, these need to be demountable and of scale thickness, I'm guessing the real things would have been around 16 gauge
Measure and cut
Measure and cut
Rather than using heat to soften and bend the shields I'm using the score and bend and bond method, the material is relatively thin so heat could be a problem
Rather than using heat to soften and bend the shields I'm using the score and bend and bond method, the material is relatively thin so heat could be a problem
Bolt hole tab fixings, these need to be demountable for painting, I want to use rusty header paint effect
Bolt hole tab fixings, these need to be demountable for painting, I want to use rusty header paint effect
It's just a little to tight a fit, this is no big deal but if I don't get it right the paint will be damaged
It's just a little to tight a fit, this is no big deal but if I don't get it right the paint will be damaged
IMG_20230911_110758.jpg
Tiny tap for the brass fixing bolts
Tiny tap for the brass fixing bolts
Another little adjustment was necessary to the tray opening
Another little adjustment was necessary to the tray opening
IMG_20230911_115751.jpg
I'm happy with these two heat shields, the real shields would have been made of three sections / side, I've gone for one continuous piece as they are tucked away .
I'm happy with these two heat shields, the real shields would have been made of three sections / side, I've gone for one continuous piece as they are tucked away .
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Going back to the V12 has engine, I'm thinking of using one of these in conjunction with the electric motors just for the noise and smoke signature , no sound card needed, no smoke module needed, just link it to the electric motor esc's control to sync
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Phil Dawe
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Re: Mr Dawe's Centurion.

Post by Phil Dawe »

If you were to couple the V12 to a generator you could power the motors rather than using batteries..... 8) Didn't the Elephant have such a set up in real life?
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

It did indeed Mr Dawe, I hadn't considered that aspect. Anyone know what these model engines retail for?
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Vince Cutajar
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Re: Mr Dawe's Centurion.

Post by Vince Cutajar »

https://m.aliexpress.com/store/11024425 ... lestoreNew

Cheapest bare engine is about 3000 euros.
They have a fast idling RPM.

Vince
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Engine bay plumbing, wiring, and fuel pipe for the gue, also the gue exhaust and hull fitting
Attachments
Exhaust fittings
Exhaust fittings
Adjustable exhaust fittings until I'm happy, then I will bond
Adjustable exhaust fittings until I'm happy, then I will bond
Exhaust wraping
Exhaust wraping
IMG_20230913_145822.jpg
The asbestos exhaust wrap looks ok and is now fixed with wicking cyno
The asbestos exhaust wrap looks ok and is now fixed with wicking cyno
Tapping for the 12ba bolts
Tapping for the 12ba bolts
Good old plumbers solder is great for the larger pipe work
Good old plumbers solder is great for the larger pipe work
Pipe clamps this time
Pipe clamps this time
IMG_20230913_155432.jpg
Oil pipe fittings are a plenty with loads more to make
Oil pipe fittings are a plenty with loads more to make
Plumbing
Plumbing
Yet more engine tray adjustments
Yet more engine tray adjustments
IMG_20230913_165541.jpg
Some paint to the nether regions
Some paint to the nether regions
IMG_20230913_170744.jpg
Mechanical engineer.
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Gue carburetor work, fuel pipes, carb linkage and air pipe, also more oil lines.
Attachments
Lots of bent pipe fittings to get around everything
Lots of bent pipe fittings to get around everything
The step drill is great for this delicate work as it doesn't snatch
The step drill is great for this delicate work as it doesn't snatch
Pipe work knitting
Pipe work knitting
Air feed pipe for the carburetor
Air feed pipe for the carburetor
Throttle linkage it's quite complex as it has a governor
Throttle linkage it's quite complex as it has a governor
Brackets always with the brackets
Brackets always with the brackets
It's a busy little engine, you will need to zoom in to appreciate all the working carburetor linkages
It's a busy little engine, you will need to zoom in to appreciate all the working carburetor linkages
Just a few electrical wires to run to the gue, paint it and it's done
Just a few electrical wires to run to the gue, paint it and it's done
IMG_20230914_121414.jpg
The workshops new edition, thanks Andy. This will speed up the turning side of things
The workshops new edition, thanks Andy. This will speed up the turning side of things
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Just top coat painting today.
Attachments
This duck egg enamel seems to take for ever to cure.
This duck egg enamel seems to take for ever to cure.
Another coat will be required
Another coat will be required
IMG_20230915_115429.jpg
Exhaust heat shields HT silver
Exhaust heat shields HT silver
The exhausts have their first coat of red brown.
The exhausts have their first coat of red brown.
IMG_20230915_121735.jpg
This lot will have the weekend to dry.
This lot will have the weekend to dry.
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simon_manning
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Re: Mr Dawe's Centurion.

Post by simon_manning »

Just Tuned in Phil, Excellent. simon.
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

I've made a start on the radiator fan pulley assembly
Attachments
This lot from scratch is a little tricky
This lot from scratch is a little tricky
IMG_20230918_100657.jpg
I want the vees to be functional, the dro is great for this kind of work
I want the vees to be functional, the dro is great for this kind of work
These printed pullies clean up well on the lathe
These printed pullies clean up well on the lathe
11 mm od with an 8 mm id sealed bearing
11 mm od with an 8 mm id sealed bearing
Using the boring bar to let in the tiny bearing
Using the boring bar to let in the tiny bearing
This is just a push fit
This is just a push fit
This mounts just here
This mounts just here
IMG_20230918_111850.jpg
The dynamo bottom pulley done
The dynamo bottom pulley done
Roughing out the pulley mount rear plate
Roughing out the pulley mount rear plate
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

The pulleys, I've decided to print slightly larger.
Attachments
That's a better size
That's a better size
IMG_20230919_154438.jpg
Just enough room in there, I have to somehow make and fit the fan end pulleys, not sure how I'm going to do that just yet.
Just enough room in there, I have to somehow make and fit the fan end pulleys, not sure how I'm going to do that just yet.
IMG_20230919_164125.jpg
IMG_20230919_164131.jpg
I shall increase the pulley mount detail as I go
I shall increase the pulley mount detail as I go
Important to get that center as true as possible
Important to get that center as true as possible
Strange medium to turn is PLA , it gets very warm very quickly so you have to stop for a minute or you will lose the piece
Strange medium to turn is PLA , it gets very warm very quickly so you have to stop for a minute or you will lose the piece
One goes here the other lives on the other side but underneath
One goes here the other lives on the other side but underneath
The two idler/ tensioner pulleys all done
The two idler/ tensioner pulleys all done
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

The fan drive pulleys tensioners .
Attachments
The idler/ tensioner swing arms
The idler/ tensioner swing arms
I'm not going to mad on the hidden detail as these are tucked away
I'm not going to mad on the hidden detail as these are tucked away
Setting the mount angles
Setting the mount angles
Tricky little devils these
Tricky little devils these
Each one is a mirror of the other, although the top assembly was a lot closer to the pulleys compared to the bottom assembly, maybe space lower down was at a premium
Each one is a mirror of the other, although the top assembly was a lot closer to the pulleys compared to the bottom assembly, maybe space lower down was at a premium
Turning the tensioner tubes
Turning the tensioner tubes
The tensioner tubes
The tensioner tubes
IMG_20230920_164927.jpg
The next job is to file square pivoting joints so that they will function
The next job is to file square pivoting joints so that they will function
Now I must leave it to cure
Now I must leave it to cure
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

The tensioners are now done but for top coat.
Attachments
There's enough heat in the sun to cure the paint today
There's enough heat in the sun to cure the paint today
Nearly there
Nearly there
Fittings
Fittings
Mounting plate reinforcing strip
Mounting plate reinforcing strip
Just bend and bond
Just bend and bond
IMG_20230921_160601.jpg
Enough detail all ready as these are tucked away
Enough detail all ready as these are tucked away
There is no room on this side of the tray, ideally I would let these into the tray and cut away maybe half the fan so they miss the drive motors
There is no room on this side of the tray, ideally I would let these into the tray and cut away maybe half the fan so they miss the drive motors
Pcb fans would make great fan units, good bearings and would turn the pulleys and belts nicely
Pcb fans would make great fan units, good bearings and would turn the pulleys and belts nicely
This is approximately where the fan pulleys need to go, you can see that the electric motors are in the way
This is approximately where the fan pulleys need to go, you can see that the electric motors are in the way
IMG_20230921_165759.jpg
Umm some head scratching is required here
Umm some head scratching is required here
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

I scratched my head and came up with a simple solution.
For those that it may concern, I have washed my smart phone so email please until I source a new phone.
Attachments
IMG_20230926_095308.jpg
Another pair of pulleys cleaned up ready for the fan drives
Another pair of pulleys cleaned up ready for the fan drives
Simply bolted to a spindle so that I can fit the belts, I did have to adjust the tray openings once again
Simply bolted to a spindle so that I can fit the belts, I did have to adjust the tray openings once again
The fit looks ok but the tray is now way to high
The fit looks ok but the tray is now way to high
Some of the very few engine bay decals
Some of the very few engine bay decals
Another small fitting for the front of the engine
Another small fitting for the front of the engine
That's how much the pulleys needed to be sectioned
That's how much the pulleys needed to be sectioned
You can clearly see the scalloped pulleys
You can clearly see the scalloped pulleys
I have ordered a length of vee belt which seems to be taking forever to be delivered
I have ordered a length of vee belt which seems to be taking forever to be delivered
Marking out For The fan
Marking out For The fan
Not much room in there
Not much room in there
IMG_20230926_121313.jpg
The fan before dissecting
The fan before dissecting
The pcb fans come apart relatively easily, the material used to mold the fans is very brittle
The pcb fans come apart relatively easily, the material used to mold the fans is very brittle
Dissected fan to miss the electric motors
Dissected fan to miss the electric motors
The good old step drill is used to remove most of the material before filing
The good old step drill is used to remove most of the material before filing
I may remove a little more material
I may remove a little more material
Tucked away but they will help with the illusion.
Tucked away but they will help with the illusion.
Mechanical engineer.
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

And I thought that the chieftain was tight for space
Attachments
That's it , they are now bolted in place
That's it , they are now bolted in place
It's going to be tight
It's going to be tight
Always test fitting or you get ahead of your self and then things don't fit
Always test fitting or you get ahead of your self and then things don't fit
That will do nicely , just need to paint them silver
That will do nicely , just need to paint them silver
Air filter weathering wash
Air filter weathering wash
It all has to be wet at the same time or you will get " day work lines"
It all has to be wet at the same time or you will get " day work lines"
A good wash over this side
A good wash over this side
And this side
And this side
Weathering the fuel tank, I'm not going over the top as the engine bay's were fairly well looked after
Weathering the fuel tank, I'm not going over the top as the engine bay's were fairly well looked after
Marking out for the last of the engine bay wiring
Marking out for the last of the engine bay wiring
Drilling and tapping using just your thumb and trigger finger is the safest way when your using such small brass bolts
Drilling and tapping using just your thumb and trigger finger is the safest way when your using such small brass bolts
The quickest way to add wiring and plumbing detail
The quickest way to add wiring and plumbing detail
IMG_20230927_164540.jpg
Final fit for today, we will soon be on to the oil cooler
Final fit for today, we will soon be on to the oil cooler
Mechanical engineer.
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