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#Post#: 89--------------------------------------------------
CK 1 (ERA) build
DIR By: ChrisS
Date: January 15, 2019, 3:46 am
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I decided I wanted to build something British for my first
cyclekart so I chose an ERA as my inspiration.
[attach=1]
I did some work scaling it into a cyclekart.
[attach=2]
I want to keep it simple so I am planning a plywood tub slung in
between the chassis rails, probably pit-bike wheels and regular
cyclekart style front suspension, solid at the rear with the
axle through the centre of the rails.
Progress to date; steel has been delivered and I've built a
mock up tub from hardboard and paper. Predictably, I've had to
enlarge the cockpit from my original drawings, and I will need a
detachable steering wheel.
[attach=3]
#Post#: 90--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: Graham Hill
Date: January 15, 2019, 5:24 am
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That's a really great start Chris and keep up the build journal
for everybody.
It will be good to catch up with you again at Stretton, consider
yourself booked for some more drive time in my MG. (if you can
stand the pain!).
#Post#: 91--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: ChrisS
Date: January 15, 2019, 6:23 am
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Sorry, the pics seem to have come up a bit large, should I have
reduced them somehow??
#Post#: 92--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: TheGiantTribble
Date: January 15, 2019, 8:22 am
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The pictures seem fine to me.
And great car choice, always liked ERA's myself.
Cockpit size is a compromise but very important to get correct,
the first time I tried
to build a CK, an ERA 'E' type, I could get in but not
out...opps!
#Post#: 119--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: ChrisS
Date: January 20, 2019, 2:26 am
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A big day yesterday, as I started building the real thing, no
more mock up! I'm using 12mm ply for the floor and 9mm for the
sides although having read Rhys's Kim journal, I think I could
have gone lighter. I will probably have to make some relieving
cuts to allow the side panels to bend where I want. I had some
25mm ash left over from a previous project which I am using for
the joints. I plan to do the tub first, then construct the
chassis round it.
I've bought an axle, carriers, hubs etc for the rear from
Gemini, but I'm holding back on the front as I am still unsure
about springing and stub axles/bearings and I haven't managed to
source my wheels yet.
#Post#: 121--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: RhysN
Date: January 20, 2019, 3:34 am
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I don't think you need relieving cuts Chris.
Once you have decided on the curve, set up a few pieces of
timber on a work table, bits of 3 x 2 at right angles to the
side panels, lay your ply on top, then cover with towels
(charity shop to save being castigated?) and wet them with hot
water. Even better to use a fairly hot iron and get the ply
soaked and you will be surprised how supple it becomes. Put some
weights on the top and let it settle. Once it's dry you will
have your curved sides. The more effort you put to jigging it,
the closer to your required shape. I suggest cutting the sides
before curving. In reality the ERA has very little shape until
you get to the back axle, which is where the tub on my ERA
ended. There is a brief bit on mine, on www.gittrevillegp.com,
then work through "The Cars", mine is in Cars B, but there is a
mountain of info there so have a look at the lot. All those cars
showing with differentials have removed them.
Don't forget to have a left and a right, guess how I know this!
#Post#: 290--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: ChrisS
Date: February 9, 2019, 8:03 am
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Work is going to stop now for a month as I will be away visiting
family, so here's a quick progress photo!
Nothing glued yet or welded, the whole thing is held together
with clamps and ratchet straps! I need to weld up the chassis
as a priority when I return, stop it moving around!
I decided to try making the grille surround from mdf, some way
to go on that yet, work in progress!
#Post#: 291--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: RhysN
Date: February 9, 2019, 11:01 am
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Looks great Chris. Plenty of time to think little details while
you are away :)
#Post#: 463--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: ChrisS
Date: April 2, 2019, 7:26 am
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I've now got my wheels, I'm using 2 C90 rears and 2 C90 fronts.
I've fitted the driven wheels with 37 x 25 bearings and mated
them to Gemini rear hubs.
I pressed out the wheel studs and cut off the Gemini boss to
leave a flush surface.[attach=1]
Drilled new 10mm dia holes (100mm PCD)[attach=2]
Filed 4 slots in the Honda hub[attach=3][attach=4]
Made cover plate to fit where the cush drive used to be. (4mm
steel)[attach=5]
All bolted up.[attach=6]
#Post#: 465--------------------------------------------------
Re: CK 1 (ERA) build
DIR By: Graham Hill
Date: April 2, 2019, 12:05 pm
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Keep up the detail of the build posts Chris, it's what this site
needs to encourage others. Thanks also for making the trip to
Coventry at the weekend it was good to catch up again.
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