Triumph Tr6, 3d printed large scale

[François]

Thank you russf. Yes the tr6 con rods are angled. You actually researded it more than I did. The cast effect is a mix of both print process and a not very good paint job. But I do like the effect! As for the tapped holes, I printed the basic hole ( tap drill sized hole), in most cases .040" dia for a 00-90 bolt and tap the holes after curing.

 

[François]

A few more pictures

View attachment 20251230_203229.mp4

 

[Daniel20]

Another amazing aspect of your models is the apparent short time between design and production. It's really a pleasure to follow your work François.

 

[François]

First assembly test of the rocker arms. It should eventually all fit together.

 

[François]

So the head is painted with a little bit of oil weathering added.


I had a plan all laid out for the valves but as is often the case, my plans don't always work. My intention was to "machine" a groove in the valve stem to receive a circlip but since I don't have a lathe, it was very difficult to make the grooves identical and at the same place on all 12 valve stems.
Circlip groove

First valve set

A few valves with the circlip installed

I need to have all the stems as equal as possible so the rockers align properly. So I ended up removing the circlips which was used to hold the valve spring and replaced them with a flat headed pin which is inserted and glued in the valve stem. I did a test to see if this new arrangement worked before doing 12 new valves. It worked great!

New valve design test
View attachment 20260104_194948.mp4

All 12 new valves installed

Viewed from under
View attachment 20260104_215502.mp4

Head on bloc with oil dipstick in place

 

[François]

Here are a bunch of pictures of different things done today.

Rocket final assembly


Head studs

Head bolted

Spark plugs

Core plugs

Push rod components

Assembled pushrod

Pushrods installed

Lifters in place

Intake and exhaust manifold installed



And the rockets rocking
View attachment 20260105_195402.mp4


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[François]

I've been busy this week.

I wired the starter motor. And made the transmission.

Here are a few pictures.

Leads on connector post

Connector post installed in solenoid housing

Solenoid housing on main housing

Gearmotor installed

I also printed, painted and assembled the transmission. Not 100% satisfied with it, I still need to tweak the clutch a little.

All parts ready for assy

Bearing in tail housing

Bearing in bell housing

Clutch fork assembly

Fork in bell housing

Both housing bolted together

Shifter

Shifter installed

Shifter in action
View attachment 20260109_211044.mp4
Transmission bolted to engine

 

[François]

So the engine and transmission are assembled together and mounted on a temporary rack to facilitate the rest of the wiring and hosing and other detailing that is still do to. The clutch is in and functionning, I glued 1200 grit sand paper to the face of the flywheel and clutch pressure plate so that the flywheel can drives the main shaft.

Here are a few shots and videos

Sandpaper for friction

Engine/transmission on temp rack

Clutch in place

Shifter

Wired coil

Fan belt

And some videos
View attachment 20260113_213056.mp4

View attachment 20260113_212722~2.mp4


Valves Viewed from an opening in the head
View attachment 20260113_213000.mp4

 

[Peter Voogt]

So the engine and transmission are assembled together and mounted on a temporary rack to facilitate the rest of the wiring and hosing and other detailing that is still do to. The clutch is in and functionning, I glued 1200 grit sand paper to the face of the flywheel and clutch pressure plate so that the flywheel can drives the main shaft.

Here are a few shots and videos

Sandpaper for friction

Engine/transmission on temp rack

Clutch in place

Shifter

Wired coil

Fan belt

And some videos
View attachment 570359

View attachment 570363


Valves Viewed from an opening in the head
View attachment 570360

It’s unbelievable what you are building, François. So much details and functionalities. My Respect!
Regards, Peter

 

[Daniel20]

Sandpaper friction plates, a transmission with working gears, even a serial number embossed on the cylinder head!!!! Just fantastic François.

 

[François]

I did the gas filter. I made it in 2 parts, the inner part with the yellow filter element and the outter clear part.

And next to the real filter


I also made the clutch slave cylinder, the lever is fixed to the clutch fork shaft so it rotates when the clutch is actuated.


The real slave cylinder


And in action
View attachment 20260116_212119.mp4

 

[mondrasek]

I have not seen one of those gas filters in years! Awesome. And a great model reproduction.

I think the last vehicle I needed a fuel filter for I built over 40 years ago. But after acid etching and sealing the gas tank it was a prudent addition before introducing the gas to the carbs.

I didn't replace the hard pipe fuel lines from the tank to the engine the last time I built. And so the filter was definitely a good idea, even though it was not necessarily "factory" on that one.

Was a fuel filter standard on a stock TR6?

M.

 

[François]

I don't know if it was standard but I've always had one in one form or another.

 

[François]

I did the plug wires this morning, it came out ok but I think they are a bit too big. I'm using a 26 awg wire that has a 1.5mm casing dia. At full scale that comes to 9mm dia but he real wires are 8mm. So I found a 28 awg wire that has an OD of 1.2mm, a bit on the small side but I think that being a little under sized at scale is better. We'll see once I receive the new wire.

The real wires

The model's

 

[François]

This will be my last post for awhile as I'm leaving on a 2 week ski trip.

I painted the rocker cover using the same paint I used when I restored the car back in 2006. Well not the same paint, that bucket is long gone but the same type and color. It's a base coat from Basf called Tahiti blue, an original Tr6 color. I then applied a Tamiya acrylic clear coat over it. The color came out a bit darker than the car is but that paint job is 19 years old so it must have faded a bit.

The scaled cover sitting on the real one

The cover installed

Compared to the real one

I also figured out how to print the frame. It's much to big to be printed in one part so I sectioned in 5. Each section will be joined to the next using connecting tube that fits inside the frame. I also made a few cut-outs to provide wire passages.

Sections separated

And joined

 

[GIG1810]

Hey François,

Your attention to detail is unparalleled. Your models are extraordinary. Truly beautiful.

The engine is truly a dream. It's a shame that the entire interior isn't visible. Perhaps you could build a plexiglass valve cover so that the valves can be seen?

May I ask where you ordered the small springs and screws? They are tiny, and I could really use some.

Thank you very much for your reply. Best regards,

Günther

 

[Peter Voogt]

This will be my last post for awhile as I'm leaving on a 2 week ski trip.

Enjoy your holiday and hopefully nice weather and snow conditions, François.

I painted the rocker cover using the same paint I used when I restored the car back in 2006. Well not the same paint, that bucket is long gone but the same type and color. It's a base coat from Basf called Tahiti blue, an original Tr6 color. I then applied a Tamiya acrylic clear coat over it. The color came out a bit darker than the car is but that paint job is 19 years old so it must have faded a bit.

The scaled cover sitting on the real one

The cover installed

Compared to the real one

I also figured out how to print the frame. It's much to big to be printed in one part so I sectioned in 5. Each section will be joined to the next using connecting tube that fits inside the frame. I also made a few cut-outs to provide wire passages.

Sections separated

And joined

Nice progress on the engine and frame. I loved the amount of details.
Regards, Peter

 

[François]

Hey François,

Your attention to detail is unparalleled. Your models are extraordinary. Truly beautiful.

The engine is truly a dream. It's a shame that the entire interior isn't visible. Perhaps you could build a plexiglass valve cover so that the valves can be seen?

May I ask where you ordered the small springs and screws? They are tiny, and I could really use some.

Thank you very much for your reply. Best regards,

Günther

Thank you everyone!!

Gunther, the springs I buy from Amazon, just do a search for miniature compression springs and you'll get a ton of results. As for the screws, I buy them either at my hobbyshop if I'm in an hurry (10$/5 bolts) or from www.minitaps.com if I can wait, about 30$us for 100 bolts plus shipping.
The cover if very easy to remove, just lift off and everything becomes visible.