Assembling a Tiger Cub Flywheel // Paul Brodie's Shop

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#flywheel #tigercub #triumph #fussyframebuilder

[glenpiro]

Thats definitely a hands on class Id attend right there. That particular skillset is one of the ones that separates engine builders from engine assemblers.

[aishayana]

Paul, I enjoy watching you work. I grew up with a machine and balancing shop in my basement. My father even balanced the transmission on the lunar rover. Spent most of my life balancing and blueprinting engines.😊

[stationaryenginesworldwide]

Brillant work!. You have the patience of a rock awaiting its trip to the sea

[mickgentry]

Great episode, in the Tiger Cub story. really well explained thank you.

[yodasbff]

I did a few Sprint flywheels back in the day, it was a lot of work. Thanks for the video. 😩

[paulbecket]

this reminds me of work I've done on harley flywheels (the school i went to had these old jigs we put them into and to adjust we hit them with a lead hammer)

[gman]

Really well done guys.
Can’t wait to see the new seat when it’s done. I really like the shape you’re going for.

[Blackmatemax]

Good afternoon! Very satisfied with the process. Have a nice weekend!

[retromechanicalengineer]

I made a fixture when I did the BSA crank, still had a little bit of truing to do. I have a lead mallet which was originally for tightening the nut on sports car wire wheels.
That tool illustrated in the Haynes manual is the Triumph special tool for assembly and disassembly of the flywheel.
Best wishes, Dean at Retromeccanica, UK.

[philmuskett]

Perfection, mate. I've come to expect nothing less!!!!

[fredjones]

I had a cub more than sixty years ago. I rebuilt it into what would now be called a cafe racer. It had a plain journal big end bearing which was changed the a roller. The flywheel assembly was rebalanced, can't remember the ratio. The inlet valve was increased in size so was the inlet port which was polished. The cast iron inlet guide was shorted and an Amal carb put on it. The camshaft was replaced with a high lift longer duration sports cam and a 10 to 1 piston fitted. That bike used to fly. The 250 cc 2 stroke Arial Arrow couldn't catch it. I won't say what speed it did down a slight incline because you won't believe it, but I was expecting the con rod to let go any minute, it didn't. Not the most fuel efficient though.. love your videos, brings back lots of memories..

[TheBrummiedoug]

It was about 1964 when I changed my first crankpin on a Cub no handbook just a big Sweeney and Blocksidge had/fly press and a try square. A Blue and White Cub with alloy guards and an energy transfer system no battery, a nightmare to ride in the dark. A pig to start but loved it.

[whalesong]

Oh, nice, ... .001" is super. When I first saw a crank like this being assembled and trued, it was so educational, on a Matchless G2CS 250 I owned, a persistent crankpin breaker..!! The old timer who rebuilt it had a truing stand and final adjustments to alignment were done with holding the flywheels in his hand and he smacked the one needing to move with a lead hammer and then rechecked. Method stayed with me throughout my career as a mechanic myself.

[budlistar]

You sir are an excellent teacher. You patiently explain the what and the why that only comes with experience.👍🏍

[raynyhus]

I've never seen how this was done. Thanks for the insight.

[truethought]

Thanks Paul, You made that look easy, obviously you have setup flywheels a few times before! Many people have had to knock them back and forth
to get them right. You are truly an old school fitter/engineer. You could go beyond what is needed and have it dynamically balanced? No, only joking!

[MotoDeSoto]

Nice press. Also, I like your idea of aligning the flywheels before the pin is all the way in. Good idea. 😎

[tomfortson]

Thanks Paul & Mitch! I noticed that you answered my question already - Alan asked about the aluminum plug. "Great show!" BTW, really like the seat form. Final product should look great and be pretty comfortable!

[generalistgarage]

Thanks, I learned a lot from this video

[andreascarlberg]

Nice vid. I got a bit new knowledge, thanks!