Thursday, June 15, 2017

Motorworks BMW choke lever conversion

My R80 combo was suffering from continuing rough running despite a carb rebuild. It felt as if it was running partly on the choke and with the tank off and a look at the woeful state of the choke cables it probably was. The bike only needs choke for initial start up on a cold day so I did consider dispensing with a choke altogether but thought better of it. The choke cable routing is pretty torturous and the cables are pricey. Luckily I remembered browsing through the Motorworks website and seeing their choke conversion a few weeks earlier. The conversion is only a bit more expensive than a new set of cables and simplifies set up and cabling. Of course there is the disadvantage that you have to bend down to the carbs to operate the choke but I found that a small price to pay.

Motorworks Bing carb choke conversion.
The kit is nicely made in stainless and comes with a neat aluminium blanking cover for the choke lever on the clutch cluster. Fitting is straightforward though a little bit fiddly getting the pinch bolts in place and at first it seems like the operating angle for the plunger is all wrong. In practice the new levers work fine and setting them up is a doddle. Smooth running was restored to the bike. Now, if I could only sort out the ferocious thirst of the dreaded Bings!  

And the choke conversion fitted. Whilst at it I replaced the nasty
crosshead carb top bolts with niceer looking and more
convenient stainless allen bolts.

Tuesday, June 13, 2017

Don R Dougies posing

Easy enough to recognise the bikes, a brace of Douglas. They are presumably from the First World War era, the bikes, riders and uniforms all look authentic enough so the studio pose is rather incongruous. I believe the uniforms are British. Wouldn't it be wonderful to know the full story..

A pair of Douglas and Despatch Riders pose
in a studio.

Sunday, June 11, 2017

Flat tank New Imperial

Easy to identify this flat tanker as a New Imperial as it's written prominently on the tank, further than that I am not sure. NI had a rather bafflingly wide model range through the twenties, all with numerical codes. This could be a Model 1, 2 or 3 with perhaps an A, B or C suffix. I'm guessing at a 293 or 346cc motor and a year of arounbd 1925. Any NI experts out there please do chip in.


Friday, June 9, 2017

Yamaha AG 200

Yamaha AG 200.

I first got to know these Yamaga AG bikes when riding around Africa on my '55 Bullet 10 years back. I remember seeing them in showrooms and out and about. They were cheap to buy and look like they are made to take a beating. In Africa they are popularly used by charities as ways of getting out in to remote areas. They are even used with sidecars as ambulances in some countries. Over in Australia and New Zealand they are widely used on farms and sheep stations.

The AG stands for Agricultural and they first appeared in 1982 and are still made today in pretty much the same spec. They are rare bikes in the UK and this one came up for sale just as I had some money in my pocket from selling another bike and was looking for something to use to compete in long distance trials. I was riding an Enfield Bullet in trials, I had developed it to a point where it was fairly competitive and a good ride. Of course I then sold it. My new brief was for something light, cheap, reliable and low maintenance. In buying a 30 odd year old farm bike I pretty much failed failed on all these counts. I didn't pay a lot of money for it but probably plenty for a slightly knackered small Yamaha. It is fairly light but not compared to other small trail bikes and as for reliability, well it hasn't gone wrong much but then again I haven't attempted many miles on it as it is still running rather badly....

On the plus side the bike is beautifully balanced and should, when sorted, be a really excellent bike for long distance trials. Plus it has a bit more character than just another Serrow.

At home in the African bush, Australian
Outback or Dorset green lanes?

The AG 200 is based squarely on the XT200, the smaller brother of the cult XT500 off-roader. The engine is a sweet little 200cc ohc unit that is used in a number of other Yamahas notably the BW200 and TW200 and is very similar to the 225 Serrow. The rear wheel is 18 inch and the front 19. Essentially the bike is XT200 with added weight: it has a cute front rack above the headlight, a huge rear rack that could carry a sheep, enormous engine protection bars, a fully enclosed chain case and as catalogue spec it came with a large tubular handlebar 'fender'

Big engine bars.

This particular bike came to me with an electrical problem - a new indicator cluster had been fitted but the owner hadn't been able to wire it in. After working at it with a meter for a few hours he had my every sympathy. There are a lot of wires inside that headlight, perhaps they've been muddled up a bit over the years but they don't all work together as they should.... Took a while but sorted in the end. A test ride exposed some carburation glitches. First look showed a knackered rubber intake manifold. This replaced it was slightly better but not great. The carb is a Mikuni diaphragm type, spares are not easy to come by and a new diaphragm to replace the old and tired one is a bit pricey. In the end I've bought a regular traditional Mikuni VM slide type carb (though a generic Chinese one) that is for a BW200. The carb only cost twenty quid and to be honest it looks pretty good, how do they make and sell them for that price? 

There's no hiding with a bike this yellow.

The carb swap is still pending but in the meantime the bike runs fine with just a touch of choke. It's had a brief green lane run at which it acquitted itself excellently and has low enough first two gears that it can virtually climb a cliff. The little AG 200 is indeed so far shaping up to be an excellent long distance trials contender. It doesn't have a great deal of oomph on the highway but it will cruise along 55mph-ish. The bike was perhaps imported from Japan as it has a very irritating red light that appears on the speedo as soon as you top 50. That had me fooled for a while, I thought it was an oil light and the thing was getting starvation when revved hard.... had to look it up on t' web when I got home from the test run!

There we go. Should be sorted soon and hopefully that'll be the last of the maintenance on it for a while. I'm not going to give it anything like the punishment that would be meted out to it on an outback sheep station. It's different, some might say ugly but I would say it has a certian rugged charm. 

Neat front rack and very feeble 6v electrics.

Fully enclosed chain with its own guard.

Big tank for a frugal 200.

Transcends notions of beauty!

hmmm... must paint that horn black!

Wednesday, June 7, 2017

A veteran Triumph poses

A veteran Triumph poses for the camera. I had originally listed this down as a Model H but thanks Nick Smith for correcting me and pointing out that the bike is a veteran. I didn't look closely enough and the hub clutch / gear dates it as an earlier bike, looking at Peter Cornelius' pre-war Triumph site I would go for a 1913 model: a Type A Roadster Free Engine Model or a Type C Roadster Three-Speed Model though I am certainly happy to be corrected by the more knowledgeable.

This photo is dated on the reverse as June
30 1921. Look carefully and you can see
the sidesaddle 'ladies' pillion.

Same Triumph. Chap looks like he
is serious about his motorcycling.

Sunday, June 4, 2017

Vintage Revival Montlhery 2017 part 5

The final batch of pictures from the Vintage Revival. Happy memories from a month ago.

One of a pair of unusual Puch 250 two strokes.
This one had been modified for racing post war.
That megaphone looks loud!

And here's the original spec one. Look closely
and it is a very unusual bike. The crank is in-line
with the frame but to avoid a bulky and crunchy
car type clutch a la BMW the clutch is in the rear
hub.

And here  is the Puch's clutch. External band
brake on the right side, clutch on the left and the
actuating mechanism is a scroll acting on a
pushrod that goes through the hollow rear axle.

1930 AJS R7 with Brooklands history came
down from Norway to be displayed.

An unusual feature on th AJS is the front brake
cable that goes through the fork tube. Neat.

ABC race car.

1904 Griffon 500cc Paris Madrid racer and Simplex

1900 Lamaudiere et Labre 230cc

Singer Motor Wheel from c 1902.

Excelsior 1919 board tracker replica comes
with ready made patina.

Gorgeous inlet over exhaust v twin Rudge Multi.

Perfecta Rigal racing tricycle from 1899. 760cc,
a side by side motor but perhaps could be called
a very early, if not the first, parallel twin?

Unusual Hurtu tandem - the frame is made from
light gauge small diameter twin tubes.

Lovely veteran Alcyon v twin. Early French
manufacturers seemed to have been keen on
well made but poorly designed rocking front
forks. A step up from veteran Triumph forks
that were poorly designed and averagely made!

Early veteran Peugeot restored in race spec.

Not sure of the marque but this ladies cycle
is hugely unusual.

A leaf spring stands in for the saddle tube and
the remainder fo the frame is a casting. It
looks heavy!

Mouth watering 8 valve Koehler Escoffier v twin.

The Koehler Escoffier in all its magnificence.

Finally, from the bike park, I really liked this Kawasaki W650
based chop.

Saturday, June 3, 2017

Saucy shorts

Enjoying a camping holiday in the thirties. The freedom of cycling!

Two lasses enjoying a cycling holiday.