1971 Triumph Bonneville Motorcycle Restoration: the baseline

 Baseline photography for this 1971 Triumph Bonneville restoration project:

According to Low Brow Customs, this means I've got an A (January) E (October 1970 - July 1971) and was the 9125th 650 twin made that year (00100 is the starting number for each grouping so this was the 9225-100th motor made in the 1970-71 batch).

https://www.tomcc.org/Triumph/FrameNumbers

https://www.fagengine.com/blogs/tech/triumph-engine-and-frame-numbers

The frame was tricky to pick out - one of those sites mentions that the stampings are sometime very thin and this one's barely there - our best guess is AE07050, which would put it in the same month/year as the motor, which seems promising.

https://triumph-tiger-90.com/dating-your-triumph/

The chopper stuff has started to come off and the bike is up on a wooden base on the stand in the back of the shop.  

Next up will be taking the tank off and beginning the GREAT DISMANTLE OF 2021!

Bike Evolution

I've been pondering motorbikes as the season ends here in Canada and the darkness closes in.  I'm only 300 miles away from putting the Concours over the thirty thousand mile mark, which has been the goal this year.

The Concours has been a revelation.  This year I've gone international with it, doing thousand mile trips and circumnavigating great lakes.  I continue to modify and adjust, making it more and more long distance worthy.

Surprisingly, I'm finding it very satisfying in the twisties, and that 999cc Ninja motor wails like a banshee if you wind it up, so there is no lack of visceral thrill in riding it.  So satisfying is it that I'm left wondering what more I'd need in a road bike.

That's where the KLX came in.  As an off-road tool it's purpose built, but I'm finding that I don't have the time or the local access to dedicate to off road riding.  I enjoy it, but the cottage I was thinking of using it at isn't really that accessible and other than riding around on dirt roads, I'm finding it difficult to justify, especially for what it cost.

There is also the culture side of it.  I get a nostalgic jolt out of the idea of riding a classic Scrambler all over the place, but MX riding?  Not so much.  It all seems a bit Ricky Racer to me.  I like green laning, and trail riding, but I'm not so much about the radical off road stuff, so a less MX like bike would do the trick.   One that scratches that nostalgic itch at the same time would do double duty...

Triumph's Bike Configurator makes dreaming a bit too easy...

Maybe next year will evolve into a Scrambler while running the ever present Concours - a sport tourer and a multi-purpose classic would each get a fairer share of the time I can dedicate to the saddle.


The new Bonneville/Scrambler is something else again:

Bigger motor, lighter bike.  The 2016 Bonneville Scrambler is a piece of fast art!

50 Year Old Triumph Bonneville Restoration: Amal Carbs and the Fuel Tank

A place where logic, precision and cause and
effect still matter in a world gone mad.

 After the random weirdness of work, time in the garage with the old Bonneville is remarkably
straightforward and logical.  I suspect the bike was in the middle of a Captain America Easy Rider customization in the early/mid eighties when it got parked and time left it behind.  I got it from Brian's storage shipping container where it was out of the weather and raised off the ground.  I don't know where Brian got it from but I suspect it was always stored inside.  I battled with a mid-nineties Kawasaki that had been left outside back in 2014 and this much older machine is nothing like as seized, rusted and difficult to get into.

Anything that doesn't immediately loosen gets a bit of heat and then comes free without any headaches.  Not being in a rush and leaning on the spannering skills I've refreshed over the past decade is making this an enjoyable and meditative process.

The surface rust came off the tank with a bit of sanding.  I'm going to see if I can knock out the dent and then strip it all back.  I used Metal Rescue on the Honda Fireblade tank in my last project and it did a fantastic job of cleaning that unused and rust tank out.  I'll let it sit overnight and then do the power wash tomorrow and hopefully the tank'll come back to me.

The Amal carburetors on the bike are remarkably simple compared to what I've been up against before.  Last time around it was a bank of four last-generation-before-fuel-injection carbs on a '97 Honda Fireblade.  Before that it was a bank-of-four on a '94 Kawasaki GTR1000 and then another complex bank of four on an '81 Yamaha XS1100.  The old Bonnie's single Amal carb per cylinder is a simpler design from a simpler time compared to those complex Japanese four-pot carbs.

Airbox sleeves off.

Carb clean up with a fine wire brush and wd40.

Some aluminum corrosion in the bottom of the carb bowls but it cleaned out nicely.

They've been sitting for a long while, but all the hard parts look to be in good shape.

After an initial cleanup I'm going to break down each carb and clean the hard parts in a ultrasonic cleaning bath before reassembling with new gasketry from British Cycle Supply Co..

Ultrasonic bath bringing the carbs back to clean and ready to breathe for the Bonnie again.

My plan is to get the bike operational mechanically and have it going next spring having cleaned up and rust painted the frame and body.  Once it's operational I'll ride it for a season rough and get to know it before looking to a complete engine rebuild and deeper restoration of frame and body panels at a later date.

In order to get it back to rideable, these are the parts I think I'll need:

• 
  carb gasket rebuild kit x 2
  
• exhaust pipes x2
• mufflers x2
• ignition cables (and possibly some other electrics)
• headlight
• indicators
• battery
• head and sump gaskets for the motor (I intend to go in and clean things out/have a look around before I run it)

1971 Triumph Bonneville: More Bike Archeology from Tires, Wheel Restoration & Rear Brakes

I got the rear tire off the rim today in the ongoing '71 Bonneville project during a late March snowstorm. It had a Lien Shin tire on it. I'm unfamiliar with that brand and I can't find a heat pressed time stamp on it. Tires produced before the year 2000 use a 3 digit code that makes it difficult to determine which decade they were made in (first two digits are month of manufacture, last digit is the year). Tires after 2000 use a four digit code (week # of manufacture followed by a the last two digits of the year, ie: 0501 would be the fifth week of 2001).  A 511 would be the 51st week (December) of a year ending in 1, ie: 1981, 1991.

While I couldn't find a stamped date on the Lien Shin tire, there is a three digit date stamp on the Inoue front tire: 511.  Based on the bike's last sticker on the SATAN license plate ('84), this probably dates the front tire to the 51st week (December) of 1981.  I was 12 when this tire was manufactured.  I'm still amazed that it works at all and the inner tube holds pressure.

Taking a tire this old and stiff off was tricky, but as with the TIger tire change last year, a judicious application of heat really helps soften the rubber and makes removal easier, especially in the winter.  It was -17°C outside so I put the shop heater next to the tire and let it warm up, then removing it with the irons was pretty easy.

Once I had the old rubber out of the way, I went at the rim with a wire brush and it cleaned off the surface rust well.  Some SOS soap pads and then a bout with the pressure washer out in the snow storm and the rim came up nicely.

Next time I have some time and space I'll get the front tire removed and prep that too, then it'll be time to order some wheel hardware (bearings and brake pads).  With the wheels rebuild, I'll clean up the frame and repaint it and then it's time to start putting the rolling chassis back together.

While I had the wheels off I took the rear brake apart.  I keep being surprised by how simple this bike is.  The rear brake is a mechanical mechanism, no hydraulics in sight.  You press on that big brake lever (it's big because you need the mechanical advantage for it to work) and that pulls the rod connected to a spinner on the top of the rear brake drum.  The drum spins and applies the brake.  When you let go, a spring on the drum spinner disengages the brake.  You must get pretty good feel out of a direct mechanical system like this, and you're not carrying any extra weight from a hydraulic system (fluid container, piston, pipes, caliper cylinders, etc), but I bet you've gotta have big calves to lock it up.

I'm back at work this week so it might be a few days before I take another swing at it, but it's exciting to get to the point where the bike is enough pieces that I can see how it'll go back together again.

2020 Moto Wishlist

Next season is a long, cold winter away, but I'm already daydreaming about what might be...



TomTom Rider 550 Moto-GPS:  I've always made do with my phone, but Google Maps is kinda crap when it comes to navigating on a bike.  Whenever you reach a way point it wants input, which isn't easy when you're flying through the air at 60mph with gloves on.  The TomTom not only is glove friendly, but the software is moto-specific, so no pointless inputs.  It even has a twisty-roads function!  $370CAN

A New Roof: I'm partial to Roof Helmets. To date I've owned a first generation Desmo and a Boxxer. The Boxxer is a simple thing and I miss the plush, quieter and more substantial Desmo I had before. Roof has actually come out with a new Desmo, the RO32, and I'm partial to the new flat dark blue lid they've just done. Roofs are hard to find in North America, but Chromeburner has the new lid on for about $500CAN.                          

Racing Kit!  A one piece racing suit for the other thing below.  Now that I'm with sports bike, perhaps I could take it out to track days.  To do that I'd need the proper racing kit.  To get the right spec helmet, boots, gloves and racing suit, I'm at about $2200.  Fortnine has the bits I'd need.

A long time ago I did a car performance driving school at Shannonville Race Track and really enjoyed it.  Taking the Fireblade out on track would be a brilliant way to get to know this athletic machine.  Riderschoice.ca has track days.  I just need to get the bike sorted and have the kit necessary to do the business.

Starting at about $170.

Of course, if you're doing track days and need to prep a bike for the track, you need to drain coolant and all sorts of other stuff.  What you really need is a way to get it there.  The new Transit Connect is super fuel efficient for a van and would carry my stuff and people when needed.  About $37k.

Van's got a tow hitch, so trailer, obviously...  $1600 at Canadian tire for this one.  Maybe trailers don't matter, but I'd like to colour match this one to the van.  With that and a fitted cover, it could take one or two bikes to wherever the snow ends in the winter and trackdays in the summer.




BIKE WISHLIST:

A next level off-roader.  I've done a few rounds of off-road training and dig the experience.  I'd like to race enduro and need something dependable and big enough to carry me.  There was a Suzuki DR650 I looked at in the summer for a very reasonable $4000.  It was five years old but basically brand new due to some back luck by its owner.  I wish I could go back in time, get that bike, sort it out for enduro racing and then do it!

Track-day bike:  I've already got this one underway with the Fireblade project.  Sorting out the CBR900rr in the garage and then making it track-day ready would be brilliant.  The real block to entry is the cost of racing kit and the ability to transport the bike to the track.  I think I'm some finishing up and detail work away from putting the Honda back on the road in the spring.




Top Speed Machine:  I've always been partial to the Suzuki Hayabusa, and it would let me do a bucket list thing (200mph on a motorcycle) with only a few modifications.  To stretch the bucket list wish, I'd take it out to speed week in Bonneville and do 200mph on the salt.  If I wanted a leg up on this, someone has a modified turbo Hayabusa in Windsor.

A 2-up Touring specialist:  The Tiger will do 2-up work, but it isn't ideal for it.  A bike that's a 2-up specialist would be the ideal tool for the job.  Out of all the big cruiser/touring bikes out there, I think the Goldwing is the best.  I've ridden a friend's.  It's surprisingly athletic, even with 2 people on it.  Touring bikes don't come cheap - the 'Wing is a $30k thing.

Anime Dream Machine:  The Kawasaki Z1000 has long been a favourite and its Sugomi designed look is pure anime awesomeness.  I've got to admit that the Fireblade project sitting in my garage scratches many of the same itches though.  There's an orange Z1000 in Quebec going for about $10k.  I think the Fireblade might have scratched this itch...