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.