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#Post#: 5520--------------------------------------------------
old number one
By: guest274 Date: February 16, 2022, 4:54 am
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I didn't know whether or not there was a car built by Morris.
Old number one , although originally conceived as an MG, it is
as far as I am concerned a Morris as it is built on an altered
Cowley chassis with a Cowley bullnose and is badged as a Morris.
So that is my inspiration car. First step is the ladder chassis
so what better than a ladder.
#Post#: 5556--------------------------------------------------
Re: old number one
By: Jimr1999 Date: February 18, 2022, 7:14 am
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Seems as sound a choice of materials as anything Morris, have
you laid out the chassis yet?
#Post#: 5562--------------------------------------------------
Re: old number one
By: guest274 Date: February 18, 2022, 10:02 am
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A bit more done. At the moment my time is spent 75% thinking and
25% doing. The chassis brackets for the springs are done, made
out of an old double strap gate hinge. They are 23" centre to
centre and the leaves are 23", giving the bend as in the pic's.
The arch is 4 1/4" but it may change. I have yet to make the
eyes for the spring ends. There is no moveable bracket as is
done with normal steel springs as the HDPE bends to soak up the
deflection. I am still confident it will work. One set has the
leaves bolted together and I am trying out a more normal method
using clamps as in the picture. I have only made one so far.
The chassis rails are spaced apart at 400mm at the moment. I am
not sure of the final dimension. The springs will have a
locating hole at the centre to receive a locating pin of some
sort. That's it for now.
#Post#: 5639--------------------------------------------------
Re: old number one
By: guest274 Date: February 26, 2022, 10:09 am
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Just about there with the HDPE springs. I have altered the rear
brackets from rigid to pivoting. Much better.
#Post#: 5671--------------------------------------------------
Re: old number one
By: guest274 Date: March 1, 2022, 1:11 pm
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Welded up the axle from 40mm box with a 3mm wall. Cut them at 16
degrees to match the king pin inclination on the yokes from
Gemini. I also added a 5 degree caster angle. As I have
mentioned in the thread "top hats", I have struggled to assemble
the two tubes and top hats, so much so that even clamping them
in the vice or with a G clamp it was difficult. In fact I broke
one of them but I have used a piece of HDPE in place of the bit
that broke off. Larger diameter outer tube would be better with
a bearing or oilite bushes. When I changed the stub axle
bearings I couldn't find any crush tube with a 17mm bore, so I
cut the 15mm ones along their length and increased the gap and
consequently the diameter that way. The springs seem to be
working OK so far. I have attached some pictures, but I will add
some detail pictures tomorrow.
#Post#: 5676--------------------------------------------------
Re: old number one
By: David F-R Date: March 2, 2022, 2:21 am
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I've just made some crush tubes for my wheels, 22mm x 18mm bore,
from 25mm bar. They just fit my c90 wheels.
#Post#: 5679--------------------------------------------------
Re: old number one
By: guest274 Date: March 2, 2022, 2:53 am
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I take it you have a lathe.
#Post#: 5689--------------------------------------------------
Re: old number one
By: David F-R Date: March 2, 2022, 6:07 am
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[quote author=Morrisgarage link=topic=752.msg5679#msg5679
date=1646211228]
I take it you have a lathe.
[/quote]
Yes, like me it's very old but serviceable.
There is tube of the right size on Ebay. I just happened to have
quite a bit of 25mm dia. bar
#Post#: 5877--------------------------------------------------
Re: old number one
By: guest274 Date: March 10, 2022, 3:14 am
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A bit more progress. The cross members are in. I was originally
going to weld them with those aluminium rods which look great
when used by someone who has had a lot of practice, but the
brackets were the better choice. I made them by cutting up some
3" x 3" box section. No need for crush tubes as the brackets
span the full width of the rails. I already had the pillow block
bearings from a chainsaw mill that I made a couple of years ago.
They are 1" so will need shims to fit the 25mm axle.
#Post#: 6083--------------------------------------------------
Re: old number one
By: guest274 Date: March 20, 2022, 7:31 am
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I had been confident about using HDPE springs up until the point
when I had four wheels on the chassis and sat on it to locate
the seat position. They collapsed, which surprised me because
they seemed to have a good amount of resistance. So there you
have it. You don't know until you try. I am now using the jump
springs which seem to be performing OK. I still use HDPE in
places on the chassis. The spring brackets have HDPE spacer s to
save metal rubbing on metal.
The axles have been repositioned so many times to allow for this
and that. The rear axle is now under the chassis having been
over and through. It is spinning on pillow blocks that I already
had. They are 1" bore so a bit of shimming is needed.
The engine arrived so I have been trying to locate that on the
chassis. Then the torque converter arrived. It only took 5 days
from US. I was pleasantly surprised. Now that it is on the
engine there is more moving it about trying to get everything in
the right place.
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