Archive for ‘Triumph Cub’

September 15, 2016

Trim Shape

Low Bars – I replaced the handlebars to a flatter profile Renthal motocross shape. Much better in looks and feels more steady. I’m not a fan of ‘sit-up-and-beg’ steering. The work table is making thing a treat to mess about with too! I also rode around the parking garage  columns in left and right figure eights. Getting  time on the saddle (or not when standing on the pegs!) in slow-mo.

September 3, 2016


Home Straight – I might have said that before but I believe we’re out of the tunnel and enjoying the scenery. New muffler with chicanery mounted piping allows a few runs up and down the alley. New front brake shoes, sorted a catching throttle cable and the riding feels more plated. Still a little honing but nothing too serious. 

It was April 5 2013 when I picked up the frame and engine cases.. 

August 11, 2016

Green ‘n’ Mean

Green Tiger Cub – hardtail trials in emerald green and aluminum silver… Good look!

August 9, 2016

Vintage Trials

Bobble hat & Boilersuit- here is a lanky Chris Leighfield romping his brand new Cub over tussocks on some long forgotten Northern English fell. 

August 8, 2016

Tigers Heart

‘Gin & Tonic – now that we have power then all the loose ends can get sorted. Nuts and bolts need tightening, cables need restrained, decals adhered, and engine breaking-in. 

August 7, 2016

Beware of Dog

A new Mikuni carb was installed for smoother power delivery. Some cajoling to make the fitment work but after a few kicks and cable tweaks a nice bark came from the new trials silencer. 

July 2, 2016

Goat on Wheels

Cub for Sale – as seen on the local Craigslist here is a virtually complete Mountain Tiger Cub. Just needs a rugged path. .. And spare $2,700..

July 1, 2016

Tiger Cubs

London Zoo – this week saw the arrival of a pair of precious Sumatran Tiger Cubs. And I thought my Cubs awakening was neat, but this is way cooler! Melati is the striped mother. 

June 29, 2016

You’ll wake the neighbors!

The Moggy – Tiger Cub takes her first tentative, and loud, paces along a Chicago alley. Rough engine but the gearbox shifted smartly up and down a couple of gears, clutch action light. Who says we can’t start having fun with this bike?

June 23, 2016

Hear Me Roar!

The Tiger Cub gave its first yowl tonight! Engine back in, oil lines and ignition reinstalled, exhaust pipe plumbed. A few hicks with ground but once that was disconnected an easy hoof on the kickstart and a healthy bark. A bit a coughing and spluttering. But hey! “It’s Alive!”

June 21, 2016

‘Gin ‘n’ Tonic

Gearbox buttoned up this evening. Smooth kicker action and crisp changing ‘clunk’.

Just need to put on the head with adjusted valves then drop it back in the frame. Hopefully get a firing soon!

June 11, 2016

Open heart surgery…

Ok, so I bit the bullet and opened up the engine. Trying to accomplish this without the guts spilling out. Well the cam pinion gears were synchronized at top dead center, and the valves are now snug with a smidgen of clearance, well ten thou clearance. I could use a fresh splined gear lever spindle…

June 6, 2016

Valve Job

Well, I think I may have worked out the reason for the Cub woes: the valve retaining collar was of a type with a high rim which interfered with the rocker arm action. I dug out another type which provides excellent clearance. Top photos show two types. Fitted valves back in all looking tickety boo.

June 4, 2016

It’s Alive! Not!

Not a peep. No bark, non-ignition. Looked at valve timing, ignition set-up; workshop manual settings were followed … And still no chirp. Here it sits in Deans garage with big brother Bonneville sitting nearby.

I took the cylinder head off and perhaps the valve seats have exceeded recess allowance so the rocker arms bind against the valve spring collar perhaps keeping a peep of valve open and hence zero cylinder compression… 

May 31, 2016


Yesterday the Cub emerged from its formative hibernation. Though it didn’t kick-over due to a possible ignition timing issue it sure looked good in the sunlight. It was loaded onto Deans truck – well we’ve seen a bike in the back of the Ranger before…