Mr Dawe's Centurion.

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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Still working on the Centurion loaders hatch and I probably will be for some time.
Attachments
Parallel drilling is a skill you need often in our hobby
Parallel drilling is a skill you need often in our hobby
Single fixings are fine for the male hinge part
Single fixings are fine for the male hinge part
M2 taps are as small as I'm comfortable with
M2 taps are as small as I'm comfortable with
Looks messy at this stage
Looks messy at this stage
I use this tool to hold the smaller parts as I file away
I use this tool to hold the smaller parts as I file away
Milling the male hinge finishing angles
Milling the male hinge finishing angles
It's fiddly work
It's fiddly work
All nicely in line, single fixings allow for lateral adjustment
All nicely in line, single fixings allow for lateral adjustment
IMG_20221221_165223.jpg
I'm pleased with the work so far
I'm pleased with the work so far
Mechanical engineer.
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Assister springs and armoured covers
Attachments
We all know this technique to make a spring
We all know this technique to make a spring
I'm happy with these
I'm happy with these
Nice, the power file is used to flatten the round section of the spring to make it square spring section
Nice, the power file is used to flatten the round section of the spring to make it square spring section
Turning down welded tube to the correct diameter for the armoured covers
Turning down welded tube to the correct diameter for the armoured covers
IMG_20221223_161454.jpg
Milling down the assister spring armoured cover
Milling down the assister spring armoured cover
IMG_20221223_163336.jpg
Silver soldering
Silver soldering
Very strong this
Very strong this
IMG_20221223_170711_kindlephoto-17551699.jpg
I can't fix all these parts in place just yet as I have milling to do on the under sides so it needs to stay clean for mounting in the vice.
I can't fix all these parts in place just yet as I have milling to do on the under sides so it needs to stay clean for mounting in the vice.
Mechanical engineer.
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Phil Dawe
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Re: Mr Dawe's Centurion.

Post by Phil Dawe »

Phil, those hatches are exquisite !
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

They are coming along nicely aren't they boss.
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Back to the grindstone.
Attachments
Drilling the latching blocks
Drilling the latching blocks
Turning the slide pins to fit nicely.....
Turning the slide pins to fit nicely.....
......and they do
......and they do
Sometimes it's easier to hold pieces like this in the lathe Chuck to drill out
Sometimes it's easier to hold pieces like this in the lathe Chuck to drill out
Lots of small parts to make and they need to be functional
Lots of small parts to make and they need to be functional
IMG_20221228_145639.jpg
Filing the retaining slot
Filing the retaining slot
Roughing down
Roughing down
That bolt will be replaced with a grub screw
That bolt will be replaced with a grub screw
IMG_20221228_153229.jpg
Tricky little devils these latches
Tricky little devils these latches
All good
All good
Well these will work but again I can't fix the latches just yet
Well these will work but again I can't fix the latches just yet
Marking out the periphery slot
Marking out the periphery slot
It will be tricky milling out the groove that's for sure
It will be tricky milling out the groove that's for sure
Mechanical engineer.
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Moving on with the underside of the hatches.
Attachments
Following the lines ........
Following the lines ........
........and carefully following the numbers
........and carefully following the numbers
Tricky work this and the outer edge slots are a lot slimmer if you look closely at the reference material, so we must do the same.
Tricky work this and the outer edge slots are a lot slimmer if you look closely at the reference material, so we must do the same.
The slots line up.
The slots line up.
You just have to take your time.
You just have to take your time.
Not an easy job bending this weather strip up
Not an easy job bending this weather strip up
I'm very pleased with the way this work has gone today
I'm very pleased with the way this work has gone today
Mechanical engineer.
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Steve Norris
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Re: Mr Dawe's Centurion.

Post by Steve Norris »

Great work Phil,
Was that your first attempt at the weather strip or is there a pile of scrap just out of shot.
Regards
Steve
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

I was going to mention that I did it first time Steve ! I was ready for a frustrating battle as the bend allowances mean nothing for this job, you just have to use your intuition and go for it. I did consider using brass but I'm not keen on using that at all.
Last edited by Phil Woollard on Fri Dec 30, 2022 5:01 am, edited 1 time in total.
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Phil Dawe
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Re: Mr Dawe's Centurion.

Post by Phil Dawe »

How did you join the strip Phil?
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

I haven't yet Phil it's just a spring fit and a good joint.
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Kevin Hunter
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Re: Mr Dawe's Centurion.

Post by Kevin Hunter »

I had to zoom the photo to see the join, never mind that it’s not finished. These hatches are great.
Kevin
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

This evenings exciting episode of "the hatches".
Attachments
Checking the cut will be nice and square with the dti
Checking the cut will be nice and square with the dti
Using the datum edge to set the other angles
Using the datum edge to set the other angles
Using parallels to check the position of the top cut
Using parallels to check the position of the top cut
Squaring off
Squaring off
Roughing out
Roughing out
Just the awkward top angles left holding the waste
Just the awkward top angles left holding the waste
Some very fine cuts needed or it could jump out
Some very fine cuts needed or it could jump out
This is very sketchy
This is very sketchy
Some fitting required
Some fitting required
It fits
It fits
This is where the hatch lives, just need to "let in" the whole assembly .
This is where the hatch lives, just need to "let in" the whole assembly .
Getting ready for the next stage
Getting ready for the next stage
Mechanical engineer.
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Phil Dawe
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Re: Mr Dawe's Centurion.

Post by Phil Dawe »

Bootiful!
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

The next stage.
Attachments
Carefully does it as I don't want to mess up, the insert needs to be .50mm below the turret roof height.
Carefully does it as I don't want to mess up, the insert needs to be .50mm below the turret roof height.
IMG_20230103_140855.jpg
IMG_20230103_140901.jpg
It fits
It fits
Fine tuning the hinge height as there's nothing worse than badly fitting hinges
Fine tuning the hinge height as there's nothing worse than badly fitting hinges
.48 removed to bring them down to the ideal height
.48 removed to bring them down to the ideal height
Now to permanently fill the old hinge holes
Now to permanently fill the old hinge holes
I've left it all proud so that I can machine it all flat tomorrow
I've left it all proud so that I can machine it all flat tomorrow
Just need to let it cure and it will be like rock. The great thing about milliput is you can machine it to include drilling and tapping
Just need to let it cure and it will be like rock. The great thing about milliput is you can machine it to include drilling and tapping
Mechanical engineer.
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Phil Woollard
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Re: Mr Dawe's Centurion.

Post by Phil Woollard »

Moving on with this mammoth task
Attachments
Ready to pilot drill for the hinge fixings
Ready to pilot drill for the hinge fixings
I'm very pleased as the rear hatch misses the cupola
I'm very pleased as the rear hatch misses the cupola
IMG_20230104_154831.jpg
IMG_20230104_154841.jpg
It's a tricky job with lots of marking and moving parts around until it all fits and functions
It's a tricky job with lots of marking and moving parts around until it all fits and functions
IMG_20230104_160521.jpg
I must order some more of the brass strip
I must order some more of the brass strip
I shall first bond the brass strip then peg it
I shall first bond the brass strip then peg it
IMG_20230104_163109.jpg
Lining up and soldering in situ
Lining up and soldering in situ
Just need a tiny padlock which we have somewhere
Just need a tiny padlock which we have somewhere
It's amazing how it all works out
It's amazing how it all works out
Mechanical engineer.
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