1954 Maxim 750 Pumper

[Chariots of Fire]

Having finished up the basics of the front axle I decided to get on with making up the front fenders.  At first I tried soldering some copper sheet over a wood buck the the results were less than perfect so it was on to Plan B.  I have a block of Renshape which is an extruded plastic material that has the look of wood.  But unlike wood it has no grain and carves beautifully.  So I cut out the fender patterns in the profile and top views and taped them to a piece of Renshape block.  The I cut the profile out on a bandsaw.  Using a dremel with a drum sander it was easy to round off the corners of the fenders and then sand them down smooth.  After the outside shaping was done I used the drum sander to carve away the  underside.  In the first photo you can see the completed fender on the left, a Renshape block remnant in the middle and the other fender that still needs to be hollowed out.

In the second photo it's apparent how much material has to be removed.

And in the last photo is the piece of round plastic that will form the grill.  I used the other half of this plastic on the 1955 Maxim Aerial that I built more than 25 years ago.  I purposely kept this piece in the stash with the idea it would come in handy for a future project.  Lesson?  NEVER throw extra pieces away!

[towman1271]

Impressive thinking.. Wish I had half that talent

[blackbeard]

very impressive looking fender 

[lapazleo]

Nice so far.

[DRIPTROIT 71]

Very impressive!!

[truckabilly]

Another way of creating one´s own parts. Excellent idea. Looking forward to seeing a further progress on this one.

[Tesla]

Nice work Charlie!

[tbill]

always amazed at what you come up with, build, truly fantastic. look forward to more updates.

[Chariots of Fire]

I went back to see if my piece of left over Renshape was enough for the rear fenders and found it was nowhere near enough.  What to do?  I searched and finally found a source for a good size piece for short money so I've ordered it.  In the meantime I have this old stash of porch railing plastic material that I was given  a long time ago.  I actually used it to make the fenders for my '37 Seagrave ladder truck.  So I got out a piece, traced the fender oulines as before and cut them out on the band saw.  A little final profile shaping and grinding and I had the fenders.  The photo below shows the rear fenders and a piece of the railing stock in the back.  It is a bit harder to sand than the Renshape and is a bit more porous.  But that can be taken care of with some filler like clear Testors lacquer.  I'll slosh around some two part resin on the underside just to smooth it out and give it a bit more strength.  But it is still amazing how much overall strength it has even when it is thinned out like what you see.

Like the front fender beside them I'll take some brass wire and wrap it around the edges to make it more rigid and more like the real thing.  The wire is filed flat after being super glued on.  The primer and finish paint will act as a filler to make it look more like part of the fender itself.

[Chariots of Fire]

Work on the Maxim is continuing with some progress made on the body and cab.  Having the dimensions of the truck helps immensely to make up side and top view drawings.  Measurements of the stock to be used can be taken directly from the linework and it insures that the construction will be square.  I started with the rear top and then added the sides.  Since the cab angles in at the back of the cab doors to the front grill those pieces were cut out of sheet stock and glued in position.  Then the cowl was shaped out of some porch railing stock.  Adding the firewall stiffened things up some but it will become much better once the rest of the top is in place and the cab interior is made thicker with stiffeners.  The hood and doors will be made of brass sheet stock.

The front fenders need to be worked on a bit before they can be glued into position.  In the line drawing behind the model you can see that the rear of the fender drops below the running board in order to be parallel with the hood line.  After the body and front portion are made more rigid the fenders can be glued up.

[Chariots of Fire]

And here is the rest of the roof made up of sheet stock and parts of plastic tubing.

[gotnitro?]

Amazing level of work 

 

[towman1271]

Don't know how you do it... You are the master of scratchbuilding.. Looking amazing

[Chariots of Fire]

Don't know how you do it... You are the master of scratchbuilding.. Looking amazing

Measurements and photos translated into line drawings Dave.  The relative dimensions of various parts are critical and basic.  Once you have those you can use the drawings for the details.  I also have a little trick when using photos.  For example if I want to reproduce the fenders of this truck it would take a ton of measurements to get the curves right.  But by getting the overall width in front and back, and the overall length I can do the rest with photos.  So if I take a good straight shot of the front fender looking dead at it I can put the photo into my graphics program.  Now the only thing left is size.  If the overall fender length is say 50", I make a line 50mm long and put it over the photo.  Then the photo can be scaled either up or down to where the overall length in the photo is exactly the same length as the line.  Having that I print it out to scale and then cut the fender profile out  to make a paper template, stick it to the medium the fender will be made of and start cutting.  With the basic shape accurate the edges can be sanded and ground to round them off.   that is essentially what I did in the first couple of photos of these posts.

[Randy D]

Beautiful work Charles !!!!!!  Very inspiring and now I have a back up plan if my coachwork on the Birdcage goes south

Randy

[Bennyg]

Wow. Thanks for sharing.

Ben

[Chariots of Fire]

With a bit more done on the body sides the fenders were glued in place.  The front fenders will need a bit of tweaking along the bottom edges to even them up but otherwise than that the fit is pretty good.  Next will be to build up the inside of the hose body.  That will add considerable strength and stiffness to the back as right now it is a bit wobbly.

The running board will extend to the front fender and will taper in at the same point as where the cab tapers toward the grill.  The bottom of each fender actually extends below the running board.   The body sides and behind the front fenders will have to be cut out now that the fenders are in place so that the springs and axles can be set.  The hood will be made of brass and hinged in the middle.

The interior of the grill will also be cut out.  In the stash is some nice photoetch mesh that will be curved to shape and fitted into place.  The hard part will be the headlight bezels.  Unlike other light bezels these are teardrop shape so I haven't figured out quite yet how they will be made.  The part that fits the fender is easy enough but the chromed part where the headlight and parking light go is the teaser.

Edited December 7, 2016 by Chariots of Fire

[Casey]

Seeing how you break down the complex shape of the cab into smaller pieces, then bring them all together is what makes your projects so satisfying to follow. 

I just looked back at the photo of the real truck on page one, and I'd say the headlight bezels will indeed be a bit of a challenge, but I suspect you can handle it. 

[Chariots of Fire]

Got a bit more done today by cutting out some brass sheet stock for the hood.  The pieces were annealed to make it easier to bend.  After the bend was made the rough outline of the opening was transferred to the brass.  Excess material was cut away with a dremel and cutting wheel.  The hood is hinged with a small brass hinge and held together with a stainless steel wire.  Still a bit of tweaking to get done and some shimming to do on the right side to keep the hood from dropping below the cowl line.  Bending and fitting the brass takes some time and many test fits.  Unlike plastic stock you can't sand it away.   The gap below the hood will have a piece of plastic stock filler to close it up.  The hood on the actual truck doesn't drop to the top of the fender.  Latches will hopefully keep it in position once all of the fitting is complete.

[DRIPTROIT 71]

Wow!! You are an artist!!

[Cpt Tuttle]

You make it look so easy....

I have to say that Renshape sounds like an interesting material!

[Superpeterbilt]

This sure is another great build. That hood work is a thing of beauty. 

[Chariots of Fire]

From the research I found that there are a lot of variations in the grade of Renshape.  I'm using Renshape 440, one of the lower grades of material but I really have found it to be excellent to work with.  For scratch building it is almost indispensable.  

[Chariots of Fire]

Went to the stash to see about the wheel hubs for the rear axle and found none!  Had to open a sealed ALF kit to get one but after making a mold and casting some I can put the original back in the kit box.  In the photo are the small cups of casting resin, the completed mold with cured resin and the master to the right.  Also in the photo are the completed rear springs and the individual pieces of brass strips that will make up the front springs.  Rear axle is done with a brass insert for stiffness and smooth turning of the rear wheels and the tube that will be inserted into the hubs once they are fully cured and drilled out.

[redneckrigger]

Absolutely stunning work, as we have become accustomed to seeing from you....................only you keep stepping it up a notch! Wow. Simply WOW!