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MartinClan's Pembleton build

By MartinClan · 42 updates · Sep 2012 to Apr 2025

Read the full original thread (with everyone's replies) in the archive →

September 2012

6 Sep 2012, 4:35pm Getting Underway Mechanical Overhaul
Last year, having completed my Marlin Sportster a few years previously, I started to get itchy fingers again. This time I have chosen to build a Pembleton which is a very vintage looking 3 wheeler using Citreon 2CV mechanics.

I chose the Pembleton because:
a. I like its looks
b. Being a 3 wheeler it is classed as a heavy trike and only has to pass the MSVA test which is both less onerous and cheaper than the IVA.
c. Should be (relatively) cheap to build and run.

So I have started with this:


Dscf1369 by Robin J Martin, on Flickr

And should hopefully end up with something like this:


silverfish by Robin J Martin, on Flickr

The plan is to post updates regularly (or whenever I remember) so watch this space....

Robin
7 Sep 2012, 7:21am General Update


It's generally considered to be one of the best examples. Most Pembleton owners name their cars - this one is called Silverfish.

It's a standard to aim for. Not sure if my skills are quite up to it however - we shall see! There are more pictures of this and other completed cars on the Pembleton website http://www.pembleton.co.uk/Home.html

Robin
7 Sep 2012, 8:15am Engine Mechanical Overhaul


There seems to be two schools of thought.

Apparently there is an exemption for the cooling fins of air cooled engines so with some carefull positioning/covering of all the ancilliaries so they are not contactable you can get away with this.

But recently most builders seem to have fabricated a simple mesh guard that covers the whole kit and caboudle. Bit of a sledgehammer approach. Rust seems to attack them fairly quickly after the test and they tend to fall off....

I wonder what they do for the new Morgan 3 wheeler?

Robin
10 Sep 2012, 7:30am Chassis and Body
Some pictures of the front

DSCF1550 by Robin J Martin, on Flickr

And rear of the chassis

DSCF1549 by Robin J Martin, on Flickr

My new workshop (shed) is only just long enough to take the built car and so it's difficult to get a picture of the whole thing in one go! I have made a dolly from some large bits of timber (left over from the shed build) and some industrial castors, so that I can easily move the chassis to make best use of the limited space.

And some pics of a few more of the bits from the manufacturer

DSCF1542 by Robin J Martin, on Flickr

DSCF1555 by Robin J Martin, on Flickr

DSCF1556 by Robin J Martin, on Flickr

DSCF1557 by Robin J Martin, on Flickr

Robin

October 2012

16 Oct 2012, 12:44pm Engine Mechanical Overhaul
Gearslide (gearstick?) arrangement. I replaced the 'orrible standard rubber connection between the lever in the box and the gearslide with a rose joint.

DSCF1679 by Robin J Martin, on Flickr

Front of gearslide will evenetually be supported by bulkhead but for now it's a block of wood! Interestingly the 2CV gearbox is a dogleg. First opposite reverse, 2nd opposite 3rd and 4th opposite nothing!

DSCF1672 by Robin J Martin, on Flickr

Umbrella style handbrake. I had to make the link as the standard 2CV link is too short.

DSCF1680 by Robin J Martin, on Flickr

Various pictures of the brake line instalation. There isn't a single flexi in the whole system thanks to Citreon's ingenuity.

DSCF1678 by Robin J Martin, on Flickr


DSCF1682 by Robin J Martin, on Flickr


DSCF1683 by Robin J Martin, on Flickr


DSCF1684 by Robin J Martin, on Flickr


DSCF1686 by Robin J Martin, on Flickr


DSCF1685 by Robin J Martin, on Flickr

More pictures here [url]www.flickr.com/photos/robinmartin[/url]
18 Oct 2012, 8:00am Mechanical Overhaul


Unfortunately not. Citreon use a different method of terminating the brake pipes (now there's a surprise). They have a bulge about 1cm from the end of the pipe (instead of a flare on the end) and a little rubber tube that slips over the end of the pipe that actually makes the seal. You can buy a special Citreon brake flaring kit but is is £££££. Forunately a company called Bonapart (really!) make a brake pipe kit specially for the Pembleton with the correct length pipes. Well - almost correct, I had to be a bit inventive in one case.

Robin

January 2013

25 Jan 2013, 6:17pm General Update
In the other car haha........

February 2013

7 Feb 2013, 1:23pm General Update
Workshop Weekend

Last weekend I went to a workshop weekend hosted by Duncan Grimmond. Duncan is a professional sheet metal artisan (http://www.zinccounters.co.uk/) and also a fellow Pembleton enthusiast. Once or twice a year he is kind enough to open up his workshop so that Pembleton builders can access his huge range of metal forming tools - folders, shrinkers, stretchers..... The main job I wanted to do was to form the flange on the floor which is curved and so potentially tricky. Duncan made it look easy....


DSCF1713 by Robin J Martin, on Flickr


DSCF1717 by Robin J Martin, on Flickr

While we were there I managed to get a few shots of Duncan's second Pembleton which is currently under construction.


DSCF1718 by Robin J Martin, on Flickr


DSCF1720 by Robin J Martin, on Flickr

A standard to aim for! A few more pictures on my Flikr pages.

Robin
25 Feb 2013, 8:14pm Engine Mechanical Overhaul
And its in....

Engine fitted at last. Everything went according to plan (well more or less). So I know have an Italian engine mated to a French gearbox using a British adapter. Cool.

A few pictures...

Completed engine from the front. The original ignition was fired from a pickup on the Guzzi flywheel. But of course I am now using the 2CV flywheel. Proiblem solved by using an old school analog electronic igntion from Lucas. The pickup goes on the end of the camshaft.

DSCF1727 by Robin J Martin, on Flickr

And from the other end.

DSCF1729 by Robin J Martin, on Flickr

It fits!

DSCF1731 by Robin J Martin, on Flickr


DSCF1732 by Robin J Martin, on Flickr

Lower mounting nut just fits between three cooling fins (middle one removed)

DSCF1736 by Robin J Martin, on Flickr

Next step - to get it started - but still a way to go yet....

Robin

March 2013

10 Mar 2013, 6:06pm Engine Mechanical Overhaul Chassis and Body
I have been working towards getting the engine running. Lots of little jobs to do first.

New bracket for clutch cable. The original one that was welded to the chassis meant the clutch cable was poorly aligned and right at the end of the adjustment.

DSCF1741 by Robin J Martin, on Flickr

Carbs trial fitted with air filter from Ebay. Not the best of solutions but it will do to start. Neck for air filter clears chassis by at least 1mm!

DSCF1738 by Robin J Martin, on Flickr

Old school electronic ignition (Lucas Rita) with coils underneath. The Guzzi employs a lost spark system which means two coils.

DSCF1739 by Robin J Martin, on Flickr

Robin
11 Mar 2013, 8:04pm General Update


Are you volunteering? ;-).

Long way to go before that stage. Tally ho!

Robin
17 Mar 2013, 5:57pm Mechanical Overhaul Chassis and Body
Small update on the carb mounting. When I tried to fit the nearside carb it still fouled the chassis - doh.
So I bit the bullet and modified the inlet stubs adding a new bit made from 1 3/8" ally tube which just happens to be a good match. (No it's not my welding....)


DSCF1743 by Robin J Martin, on Flickr

Now everything fits!


DSCF1747 by Robin J Martin, on Flickr

The only downsoide is that I used about 50mm of the ally tube - but I had to buy 2500mm! Perhaps I'll go into production...


Robin

May 2013

July 2013

8 Jul 2013, 12:30pm Engine Interior & Trim
I spent the last few weeks making a metal folder. It had to be done without welding (as I can't) and cheaply. Here is the result


DSCF1787 by Robin J Martin, on Flickr

And in action


DSCF1793 by Robin J Martin, on Flickr

I only need to make half a dozen folds or so but didn't fancy the suggested blocks of timber approach. Tried to find a straight piece of timber recently?

The first part to be folded was the rear floor. Seems to fit OK....


DSCF1794 by Robin J Martin, on Flickr

I had to also do my first but of "skilled?" metalwork to make a small dip so the bulkhead could fit snugly without fouling the seat-belt mount.


DSCF1795 by Robin J Martin, on Flickr

Cheers, Robin

August 2013

28 Aug 2013, 7:35am Chassis and Body
I have almost completed all the inner panels now. It's taken longer than I hoped but it's important to get these right as the floor in particular defines the shape of the body at the lower extremity.

It might all look quite simple but what is not obvious from the pictures is that many of the flanges have subtle curves in them. Getting them all to line up is the tricky bit!

<a href="http://www.flickr.com/photos/robinmartin/9610934031/" title="DSCF1878 by Robin J Martin, on Flickr"><img src="http://farm3.staticflickr.com/2836/9610934031_c2ba06fc80_z.jpg" width="640" height="480" alt="DSCF1878"></a>

<a href="http://www.flickr.com/photos/robinmartin/9610935117/" title="DSCF1877 by Robin J Martin, on Flickr"><img src="http://farm3.staticflickr.com/2884/9610935117_80999129fd_z.jpg" width="640" height="480" alt="DSCF1877"></a>

Robin
28 Aug 2013, 7:40am Chassis and Body
I have almost completed all the inner panels now. It's taken longer than I hoped but it's important to get these right as the floor in particular defines the shape of the body at the lower extremity.

It might all look quite simple but what is not obvious from the pictures is that many of the flanges have subtle curves in them. Getting them all to line up is the tricky bit!


DSCF1877 by Robin J Martin, on Flickr


DSCF1878 by Robin J Martin, on Flickr

Robin

September 2013

2 Sep 2013, 7:44am Chassis and Body
Ali is 1.2mm thick - as recommended by the instructions that come with the chassis. It seems a bit flimsy to start with but once you start adding a few bends and joins it soon stiffens up. One builder used 1.5mm but he struggled to form some of the panels using that thickness.

Robin

March 2014