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john clayton

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Posts posted by john clayton

  1. I saw this on at traction engine site. They knew it was a Fiat as Fiat is cast into the rear spring shackles .Lots of interest in  it as  a trailer but I managed to convince them that I really needed it. The only other parts that I know of are in Australia or at the bottom of Lake Garda. See youtube.

  2. Looking at the guns mount and the number of vehicles pulling it plus barrel lenght. I'd say that was more likley a Howitzer. The Famous Big Bertha was not the gun that shelled Paris, but six Krupp built 420 mm about 15 inch howitzers speciffically built to defeat Belgium border forts. I'd reckon that to be anOBICE DA 305/17 . about 44 were built. 305 is the calibre 17 being the length of barrel as to calibre.

    Fiat 20. Nicky Armstrong in Italy has one. Weighs 10 tons, 11 litre engine . Can tow up to 40 tons.

  3. Thanks gentlemen! I think we're tending towards thinking it is worth a try. Steve - you're absolutely on the mark with the weights.


    The worry we have is that we also go somewhat faster than many of the other users of these tyres (mid twenties is comfortable, which if I have calculated correctly, would be 4 revolutions per second), and can do about 30-40 miles without stops, other than for traffic and there is a historic concern about heat build up in the core of the tyre due to hysteresis. Having seen the results of a solid rubber tyre exploding (as has happened on the front of several steam wagons), it's a concern about any tyre in this service.[/quote


    My Fiat will only do 15mph and I can buy five sets of poly tyres for the cost of rubber ones.

  4. The bearing housings for the gear shafts are very loose. I had intended shimming them but the holes are oval by up to !.5 mm. For the input shaft I am going to try to make a bolt in fixture using my miller boring head and some plumber block bearings to bore out two or three of the seats but I can't get to the seat (140 dia) for the output shaft to the crown wheel driving pinion . This has the worst ovality .Is there such a thing as corrugated shim? I am sure that I have seen it on a tractor forum. Designed for such a problem and using lots of loctite? Or was I just imagining it? 012 (5).jpg

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  5. The inside of the diff. The oil has dried out a bit.013 (3).jpg


    This is the diff lock which is operated by a lever on the outboard end of the RH drive shaft where it is bolted to the chassis . The dog clutch is destoyed and the splined sliding section has been hammered into the hlf shaft to stop it moving.Proper engineering! I don't need the diff lock but i might have a go .019 (3).jpg







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  6. Crack and bulge in side of the gear case. Probably caused by changing into reverse whil'st still going forward.The reverse gear shaft is not aligned with the input shaft. I ground the crack out and then bolted a thick steel plate over the bulge . Lots of heat then tightened the bolts . Worked a treat. Silver soldered crack as too contaminated for tig braze.and gas braze would anneal the whole casting too much.. Re-aligned the reverse shaft mount with a big G clamp. Next I made a thick brass plate to cover everything and soft soldered and screwed it in place. I know it does not look original but I don't ever want to take this apart again004 (7).jpg


    Made new reverse gear shaft fro EN8 as old one was bent Cut the oil groove with carbide burr in a Dremel. Question .Is to Dremel a verb?018.jpg All my friends use it.


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  7. Next.

    I spent 35 hours grinding ,chiseling and even burning the old tyres from the wheels. Now the wheels are in C011 (3).jpgornwall having new poly tyres moulded on. About a thousand for two singles and two doubles . I can't afford real rubber but have been assured that these will work fine.

    I machined out the middle of the oil pump and a new centre is being made.002 (5).jpg


    Rear brake shoes fabricated and lined .I made new brake cams and followers.012 (3).jpg


    Diff dismantled. Horrible!! Planetry gears have large eroded/ corroded pits. Will tig them with som S321 rod and refinish them by hand. Just had call from Boss in kitchen . Fish Pie is ready .Smell good. Back later.022.jpg

  8. At last I have some time to catch up with whats happening with the Fiat

    First . Headlamps bought in Boulogne . thanks to the person that pointed these out on Le bon coin. Stuff seams to be a bit cheaper in france. When I went over in November their recession see002 (6).jpgmed to be really biting or is the Pas De Calaise always that dreary in winter?.

    Does anyone have any lamp brackets to suit. The hole spacing is 101/2 "

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  9. One thing that I have noticed about the FIAT is that everything is a step above Dennis for quality and complexity.

    And this thing I have been pointed at looks like another step again.

    Not military, but what a monster:


    It is a shame that Fiat persisted with chain drive on the 18bl. It is causing my biggest headache. The wheels are off to Cornwall for tyres .Jobel Engineering reckon that their glue will hold the polyurethane tyres in place without a side rail . It will make the moulding and finishing simpler as well. The bands with the dovetailed and grooved surface are staying on the wheels

  10. Do you have a list of the parts that you are looking for. I might end up with a spare rad on monday. I would have to keep the best one for myself and sell the spare. I can send you drawings of the bits I have made.Hood ,chain cases, brake parts etc

  11. I need some advice as to what colour I should paint my Fiat. It will probably be marked up as a RFC vehicle. At the moment some of it is painted a sort of IRR bronze green matt. This does not look right and the matt is already looking scruffy. I need something that will last and can be kept clean. I like the colour of the Thornycroft restoration. What did you use. I need to apply the paint by roller and brush because the truck is kept in an aircraft hangar.

  12. there is a variety of wheel diameters used The spoke style can vary as well.The 18bl has these wheels as one choice. The 18blr has a300mm longer chassis and smaller rear wheels plus greater payload. There was a colonial model that had even bigger wheels front and rear. Maybe for crossing rivers?015.jpg18blr

  13. 002.jpgThe 18bl wheels found in Italy. Now safely at home at Stow Maries, now to get the rubber off and then the bands.There are some broken studs for the bearing retainers.I don't like Easi Outs but I will try them first. The first thing I did when i got home was to make sure that the brake drums holes matched . Thank God they did.


  14. The filler I used was a Bernzomatic product that was on clearance at next to nothing in B&Q. I cleared the shelves. As for the tyres 'I need to follow up the thread on the Thornycroft restoration about polyurethane tyres. They seem to be much cheaper. First problem is to remove what remains of the old rubber.P S I used oxy acet on ali casting. Preheated and just stirred the filler in .scraped off inpurities. Cleaned joint area thoroughly.The copper mould worked well.

  15. just got back from Turin . Picked up a set of wheels for my truck. Weighed close to a ton . Ford ranger struggled a bi t over the Alps. 40/45 mph all the way back .Annoyed a lot of truckers . 1835 miles round trip. Fly in all weekend at Stow this weekend . Come and see wheels and give advice. Pics when I get time.

  16. Hi chaindrive. Thanks for posting your pictures. I will post some soon . If you need any dimension of metalwork and rad let me know. Do you have aspare clutch bell as min is smashed? I'm still chasing wheels around Europe . Found som e front ones near Turin . New chain cases nearly finished. Old ones are too bad. Post again soon.

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