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#Post#: 834--------------------------------------------------
Re: Bugatti Type 37 Build - tail fibreglass
By: StefanN Date: June 13, 2019, 3:21 am
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I laid up 3 layers of fibreglass on the polystyrene buck having
covered the polystyrene with PVA and ali foil which did a good
job of protecting it from the polyester resin. It’s now set,
trimmed and ready to be attached permanently to the rest of the
tail. Filler and sanding will start when the rain stops.
#Post#: 835--------------------------------------------------
Re: Bugatti Type 37 Build
By: chrisenamels Date: June 13, 2019, 3:34 am
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If you mix up 3 parts of gelcoat to one part of laminating
resin, you'll get a glazing resin, which will mean you've got a
smoother finish to start with.
You'll need to abrade the moulding to give the glaze a key, it's
normally applied when the laminating resin has just gelled.
#Post#: 836--------------------------------------------------
Re: Bugatti Type 37 Build
By: Slack Alice Date: June 13, 2019, 5:08 am
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Looks good Stefan...I’ve been considering how to make the
radiator cowling for the GN.
Seems like a lot of work! Have I really got to make a wooden
replica and take moulds off etc?
Meanwhile, chassis works continue....!
#Post#: 842--------------------------------------------------
Re: Bugatti Type 37 Build
By: RhysN Date: June 13, 2019, 9:49 am
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I use a much smaller bubble foam than Stefan used, .
No Slack Alice you do not have to take moulds. The grilles I
have made have been foam, and the 2 or 3 layers of close weave
fabric, not CSM. A light sand, then skim coat of filler has been
more than adequate before paint.
If you are doing it with wood, why even put a layer of glass on
top? Use it smoothed off and painted. Some of the pattern maker
type timbers (obechi, poplar etc) are very easy to work as you
don't have grain to cope with near as much as "soft wood".
#Post#: 943--------------------------------------------------
Re: Bugatti Type 37 Build - CVT question
By: StefanN Date: June 30, 2019, 3:26 pm
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Life's been busy for a couple of weeks so have made limited
progress on the CK. Now of course, it's a mad rush to get ready
for Stretton. I'm stuck on how to make my radiator so it'll
just be the wooden buck bolted onto the front.
Need to: fit the tail to the main body, cut various air and
clearance holes, paint lots of bits, finish and fit the new
exhaust, sort an idle problem, change the throttle cable, change
a few nuts to nylocs and finish some jobs on the trailer. Marek
is fed up with sanding but has nearly finished the steering
wheel.
So a CVT question. How wide is the bronze idle bush on your
CVT? Mines about 10mm and sometimes partially slides into the
outer section of pulley leaving only about 5mm in the gap. This
should be enough still but I don't understand why it isn't
wider.
#Post#: 946--------------------------------------------------
Re: Bugatti Type 37 Build
By: RhysN Date: July 1, 2019, 12:17 am
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What make is the CVT Stefan? With both varieties I have here I
can't see how the bush can slide into the outer section as the
black bit with ribs on the outside takes all the space.
#Post#: 947--------------------------------------------------
Re: Bugatti Type 37 Build
By: StefanN Date: July 1, 2019, 1:46 am
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It’s a Comet Torque-A Verter TAV2 30.
The keyed and lobed part has two flat sections that key with the
outermost metal cone/disc. It also has a chamfer/taper on the
other end. What I’ve not checked is whether it has to slot
into anything on the outer pulley disc.
#Post#: 948--------------------------------------------------
Re: Bugatti Type 37 Build
By: RhysN Date: July 1, 2019, 2:52 am
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First up, ignore my previous. I have just checked, and yes it
does slide under the outer cone, but only when it's closed, ie
when the belt will be at the "high speed" mode. The sleeve is
just there as something for the belt to run on at idle mode.
The keyed and lobed part flats should match the hole in the
outer cone which is not a round hole, has matching flats for the
other part.
#Post#: 951--------------------------------------------------
Re: Bugatti Type 37 Build
By: Slack Alice Date: July 1, 2019, 12:05 pm
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Hi Stefan...my sleeve measures 1/2 inch.
#Post#: 960--------------------------------------------------
Re: Bugatti Type 37 Build - exhaust
By: StefanN Date: July 2, 2019, 12:25 pm
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Installed my exhaust today and pushed on with the myriad little
jobs that need finishing.
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