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Go Back   Madabout Kitcars Forum > Mad Build Area > Marlin Sportster, Cabrio, Berlinetta and Roadster builds

Marlin Sportster, Cabrio, Berlinetta and Roadster builds Enthused or Confused about your vintage Marlin build? Ask away here or show off your build.

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  #161  
Old 17th April 2015, 22:05
8 Valve Ed 8 Valve Ed is offline
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Kinky yourself!

Hopefully no welding at all, I have just managed to get one Kilogram of 316 rods and have started kinking them, done 8, thats 480 kinks tonight!

The stainless is MUCH springier than the aluminium, I have just woven a patch with the 8 rods and they are very tough to weave compared with the aluminium. I may give them a tad more kink.In a way tight is good because it will hold the mesh tighter and not be waffy, or rattle. I haven't decided how to finish the edges, I would like to use some 3.2mm stainless wire for the frame, then bend each mesh wire around the frame wire, but that may be a bit much. I know a man who can weld 28 gauge tubing in jet engines, so I may ask him to tack the edges for me, I don't have any argon, although I do have a TIG torch and a good DC supply... All I need is the argon.

Will probably do the rest of the kinks tomorrow, only 1260!!! Enough to put me off kinks for life!

Apart from my kinky adventures, I have almost finished off the exhaust, only needs trimming at the back and some hangers fabricating, another task for tomorrow. Than I can final fit the floor, transmission tunnel and gearbox cover. That will be good, some visible progress.
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  #162  
Old 18th April 2015, 08:45
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Paul L Paul L is offline
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Robert - Amazing skills to attempt to make your own grille.

Good luck, Paul.
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  #163  
Old 18th April 2015, 10:16
8 Valve Ed 8 Valve Ed is offline
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Quote:
Originally Posted by Paul L View Post
Robert - Amazing skills to attempt to make your own grille.

Good luck, Paul.
More a question of needs must when the devil drives! LOL

The grill has always been a sticking point for me, I know what I want but with my current equipment I couldn't achieve it. I had been promised some folded polished ss 'U' sections to form the grill but that was over a month ago and I ain't getting any replies to texts to the chap who offered, so a plan 'B' was needed.

The grill on the car I have used as my 'model' guide car, is mesh and very much the style I like but potentially very expensive, I have had a quote for 160 for the mesh and the surrounding trim, which is 10 more than I paid for the engine and gearbox... I know there are ss mesh grills on eBay and the like but they are thiner gauge and I need at least a piece two feet square, so If I am to have a grill I have to make it myself.

The welding rods are just under 20, OK it took me a bit over a day to make the tooling but it was a day well spent. To me getting over these hurdles is where the satisfaction and sense of achievement lies. It's actually so simple, it was just sussing how to get the repeatable accuracy which was the issue.
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  #164  
Old 18th April 2015, 11:59
a big scary monster a big scary monster is offline
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I would be very tempted to replicate the surround on the Alfa (on page 6) it will completely de marlinise it and create a more dainty nose end.Ed
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  #165  
Old 18th April 2015, 13:02
8 Valve Ed 8 Valve Ed is offline
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From the mesh point of view, that's what I plan, to replicate the surround from stainless would be much harder, but not impossible...

I am fresh back from Halfords, looking for exhaust mounts, my local guy doesn't have them??? While I was there I stumbled upon some Argon cylinders, admittedly only 60 Litres but that would probably enough to weld up the ss surround for the grill, so it's possible I could get the same surround in ss. Watch this space.

I suspect the original Alfa grill has been made from chrome plated steel, the surround may be made from brass perhaps? It appears somewhat crumpled at the bottom corners, which is to be expected but rather spoils the effect on an otherwise perfect 250,000 + car, but it's also indicating it's hand made!

The grill in question:



I think I have pretty well de-Marlinised the car already but the radiator grill is probably the most prominent and distinctive feature of the car. I'm not anti Marlin in any way but I want this car to be MY car, with much more than a passing resemblance to the 1930 6C Alfa Romeo upon which it was originally modelled. If I can live with the car once it's on the road I intend to make a new back tub and wings to closer resemble the 1930 Alfa Romeo style. I HATE the flat top wings, given they were made in GRP they could have been almost any shape, why did they not give the wings a crown, to me they ruin the car but I am not prepared to spend the time, effort and money needed to make new aluminium wings until I have 'proven' the chassis first.
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  #166  
Old 19th April 2015, 11:04
a big scary monster a big scary monster is offline
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I agree completely re wings, even though the berlinetta is and has been for the last 30 years my favourite kit, hard and soft tops proper doors wind up windows and almost a back seat and even a tow bar, but the marlins grill surround is about its most distinctive feature, I would also like to see one with bigger headlights.
Not sure you have posted any pictures of the whole car from a distance for a while I would be very interested to see what you have achieved so far. Ed
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  #167  
Old 19th April 2015, 13:33
8 Valve Ed 8 Valve Ed is offline
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No soon said than done!



It's a couple of weeks old but nothing much has changed significantly. It starts on the button and drives nicely. To be honest I have dumped the wind up windows, the soft top will no longer fit because there is no windscreen yet and it will be different when I do fit one...

I have made the scuttle curved rather than two flat sides, likewise the bonnet. I have raised the floor a good two inches and the back tub by four inches. As I mentioned I want to create my own back tub eventually.

Bigger headlamps would be good, a pair of P100's would be perfect but probably cost more then the entire car!!! I have a new pair of 7" lamps which I will be fitting, I am hoping to raise them to a similar height to the Alfa ones in the pic below, mounting them on pedestals in a similar manner.



This is where I started in July 2013:

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  #168  
Old 19th April 2015, 17:44
a big scary monster a big scary monster is offline
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Thanks for that. The curved scuttle will really change the look especially with your new blended bonnet, although a one off screen sounds expensive, or are you going aero screens? Taller wheels and skinny tyres would look pleasant too what's the diff and rear axle off on yours? Could the diff be changed out to gear for big diameter rims? I saw a car a chap had built himself in holmfirth last summer and oddly he looked a lot like Wesley Pegden the mad mechanic man from last of the summer wine, people where doing a double take as that's where they filmed it. He had used galvanised steel wheel arches from a twin axled trailer as his front arches and running boards they had a nice radius to them even after he had slit them down the middle and added a section, he had even used the curved bit he'd cut off from one end as the start for his rear arches.can't find any on eBay but I'll try find a PIC. Ed.
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  #169  
Old 19th April 2015, 22:38
8 Valve Ed 8 Valve Ed is offline
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Hi Ed, just got back in from returning smaller son to his mothers!

He made this today from a rather nice cradle he was given yesterday, it's fallen apart twice but he has mended it himself, while I have been kinking ss. mesh rods.



The curved scuttle was pretty well key to the whole build. The PO had ruined the original bulkhead, literally shredded the panel to get the clearance for the V8 bell housing.



Make your own mind up about that bit of panel work...

So I had to make a new bulkhead, so I decided to make it how I wanted it. I felt that although the Marlin style was resembling the 1930 Alfa Romeo 6c it was missing many of the nice styling features, so I decided to try to recreate as much of the original design as I could without trying to make a replica. The windscreen will be a tubular folding frame, like this:



I am planning to create it once the car is on the road. I particularly like the glazed portion below the hinge, it may be difficult but I think it will be worth the effort. If I can organise my TIG welder then it will be pretty easy in stainless, although I haven't come up with a neat way of making the angle lock for the screen hinge yet. It's a face to face serration, not easy to make without sophisticated machining. There used to be Meccano gears which would have done the job but all my Meccano went, so long ago I can't remember when.

The diff is a 3.44:1 a bit tall to make the wheels larger, they are 205-15 at present. I could get a lower diff but given the diff has to be built in the axle casing and isn't a salisbury type, I would need to change the entire axle. It's Ford Cortina Mk3/4/5 with the 4 link suspension.

I was contemplating getting a Transit diff and another axle casing but when I got the new Rover V8 I decided I didn't need it with all the torque the V8 has.

Big fan of Wesley's! My garage is very similar with clouds of black smoke and loud bangs issuing forth from time to time!!!

When I mod the wings I will roll them myself on the English wheel from 1.5 or 2mm aluminium, that's partly why I built it. I don't feel the shape is particularly difficult, although I haven't actually tried to replicate it yet!
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  #170  
Old 19th April 2015, 23:20
a big scary monster a big scary monster is offline
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Now my brain hurts as I own something with a serrated friction type lock mechanism with a thumb bolt that is exactly what you need for the windscreen and I can't think what it is, the lower glass in the screen is very nice you could probably use plexi for the lower then the folding portion would be square and cheap. That bulk head picture is amusing looks similar to some of the creations my daughter welds up with the MIG, my grandma was a lot like Edie Pegden Weslie's wife, makes me smile when I watch them now. Ed.
copy paste number into ebay 141625191572 or Google/eBay schnorr washer.

Last edited by a big scary monster; 19th April 2015 at 23:51.. Reason: adding link
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  #171  
Old 20th April 2015, 08:26
8 Valve Ed 8 Valve Ed is offline
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Quote:
Originally Posted by a big scary monster View Post
Now my brain hurts as I own something with a serrated friction type lock mechanism with a thumb bolt that is exactly what you need for the windscreen and I can't think what it is, ebay 141625191572 or Google/eBay schnorr washer.
Thank you Ed, although it will be a while before I am tackling that aspect of the car that's very useful info, I hadn't heard the term schnorr washer, although I was obviously aware of them.

They crop up on barbecue table sunshades, bicycle seats and occasionally angle headed tools like window cleaner mops and the like but mainly made in plastic nowadays. Looking at the example you posted it appears to be simplistically moulded, so perhaps I could make an attachment or fixture for my angle grinder and make them myself... I have access to a milling machine but it doesn't have a rotary index.

For the windscreen the location will have to be very positive.

Given I will probably only need the windscreen in perhaps two positions, flat and upright, I had considered instead of using schnorr washers, to use two small dowels at each side of the car, which engage in holes in the screen pivot hubs instead of using radial grooves. That would be very positive but lack the authentic serrations and the ability to make smaller angular adjustments to the screen rake.

A less elegant but simpler solution would be a variation of the Land Rover windscreen pivot hinge. At least that is naturally strong and fail safe, in that it can only pivot back as far as it is allowed until it locks. It doesn't have to be as crude as the LR design, although I really would like to use the neater schnorr washer style if I can.
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  #172  
Old 20th April 2015, 19:41
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Schnorr had i. My Jeep screen has 2 hinges and 2 lever clasps it is held in place by its shape only. The item in question was my pivot shaving mirror I only use it twice a year whether I need to or not, so that's why I struggled with my brain. I think when you get to that stage and start mocking stuff up an elegant and simple 2 position solution will spring into your mind, You can buy 2 lug drive dogs in various sizes someone probably does stainless ones, it will be a crucial part of the aesthetics and as you say would be nice if it was elegant, I hope you have made some extra kinked rod for your headlight guards and while you have your hand in a removable BBQ on the back rack would be most era correct? Ed.
P.s was the steering wheel just for show on his cradle racer?
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  #173  
Old 20th April 2015, 21:10
8 Valve Ed 8 Valve Ed is offline
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Quote:
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P.s was the steering wheel just for show on his cradle racer?
Err yes, a broken brush shaft and an hexoctagonaltriangular bit of old Marlin floor board from the original Berli passenger side floor, just so he could claim the cradle racer was actually a Marlin!

I'm sure when the time comes I will devise some sort of dog clutch or Schnorr serrated coupling, possible even have my own lathe again by then, I had a lovely Colchester 6" with vari speed but had nowhere to store it and it was ruined by the weather, ended up in the scrap.

Had an uninspiring day today, painted the new exhaust brackets, which meant taking the tail pipes off again, took it for a test drive and horrified my neighbour by spraying gravel about fifty yards giving it a boot full setting off on the back lane. My goodness it can pick it's feet up, it's going to be a handful in the wet...

Main floor all bolted in, final fitted. Have spent two hours polishing the rods I have kinked before I weave them into a mesh.
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  #174  
Old 21st April 2015, 21:35
8 Valve Ed 8 Valve Ed is offline
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Another lovely sunny day here, spent most of it polishing 29 kinked TIG welding rods. Then weaving them into a grill for the Marlin.



The red line is the outline for the grill frame, or surround.





Will order the metal for the frame tomorrow. Should have it for the weekend hopefully. Need to get my TIG working now...
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  #175  
Old 21st April 2015, 21:46
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Completely ludicrous yet look at the end result, no comparison to the modern stuff, bet your chuffed? Ed/
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  #176  
Old 21st April 2015, 21:57
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Will order the metal for the frame tomorrow. Should have it for the weekend hopefully. Need to get my TIG working now...
Truly wonderful!!

Looks just like the original Alfa grill.
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  #177  
Old 21st April 2015, 22:00
8 Valve Ed 8 Valve Ed is offline
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Yes, very satisfied, it's taken all day but I finished about 9pm. Head a bit numb, tired. Just hope my back holds out, I can't do standing for long periods.

It was touch and go if I had enough rods, but in the end I had one and third left, almost no wastage. I want to try to wrap the rods around the frame and weld the occasional one to make it solid. I think if I weld all of the wire/frame connections it will distort big time, even though it's relatively light, I think it could wreck it, so I will be very wary of that. I also have to weld some small fixing brackets to the frame, so I can attach it to the nose cone, neatly and securely.

Need to get onto the dashboard next, that's about the last big challenge. Seems we have a couple more nice days before the rain returns so I need to make the most of it.
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  #178  
Old 21st April 2015, 22:02
8 Valve Ed 8 Valve Ed is offline
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Truly wonderful!!

Looks just like the original Alfa grill.
Thank you Peter, hope it looks as good when it's on the car!
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  #179  
Old 21st April 2015, 22:17
reneanglia reneanglia is offline
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Are you not afraid the welding rods will melt by tig them together.
As they are designed to melt when welding..........
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  #180  
Old 21st April 2015, 22:29
8 Valve Ed 8 Valve Ed is offline
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Being a tight sod, I always used to weld the new rod onto the previous rod so as not to waste the last 100mm or so. I think they will tack to the 4mm frame rod OK. We will see, IF I can arrange for some argon of course...

Have you ever tried welding lead with TIG? It works a dream, about 5 or 6 amps with a WT9 torch. With careful setup no filler rod needed.
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