Anyone guess what this is for

[Tripps]

That is not from the "Classic" period. That is from the "Baroque" period...

Viva Vivaldi!

 

[idk]

Bring Back Bach!

 

[Jabo75]

Looks like a Flight TO a Valkyrie...

 

[ruzzle]

No worries, it will buff out.

 

[mr hunt]

Obviously you are the only 4 rocket owners who've had working gearboxes - its clearly a service hatch for replacing trans parts without removing the engine

 

[RocketmanBristol]

Obviously you are the only 4 rocket owners who've had working gearboxes - its clearly a service hatch for replacing trans parts without removing the engine

If only Triumph had come up with this…….

 

[R-III-R Turbo]

And here's a strong clue

Also, can anyone with a good eye spot what's wrong here?

 

[idk]

You should be using blue Loctite, not red.

 

[Kevin frazier]

that a and b dot ive missed them

 

[Pedro]

Crank is part A,and balancer is part B