Friday, 15 June 2018

Still Leaking?

You might recall that my oil tank cap has been pissistently leaking for the last few weeks, mainly due to the fact that there has never been a gasket in it. Having made a  gasket with a bit of dense polyurethane foam, and partially (80%) cured the leak, I needed something better.

29 mm O Ring to the rescue:


Thursday, 14 June 2018

2017 Classic Car and Bike Show

Last weekend saw some dry weather and the annual Sheringham Carnival Classic Car and Bike Show. We've attended a few of these before:

I'm quite surprised putting this post together that this is the 5th show we've attended - how time flies. This year was a good event - it didn't rain, and I had a chance to meet few enthusiasts I hadn't met before.

Here are this year's pictures:

One of the Ariels at this year's show!

Proudly made in Britain

One of my favourite cars - Sunbeam Alpine

Badged as a Lotus? Didn't know there was a Lotus Anglia

Another favourite - Fiat 500

1928 BSA single SV

Norton Big Four

Norton Big Four

Saab V4

Two Ladies in Carnival Spirit

Two Chevrolet Pick Ups

Nice Series 1

Ford Model B?

Volvo PV544

Just like my first car - Mk2 Mini Cooper

Possibly my all-time favourite - Lotus Elan

BSA SS80

Excuse the ignorance - I know it's a Harley but any more???

Little cluster of bikes

Cluster of old bikes in soft focus!

BSA again

Riley RM

Amazon

Prefect
Aero Morgan Flight Deck


Sophistication - enclosed pushrods!

Maintenance-friendly

Fantastic

How can I buy one?

Wednesday, 6 June 2018

More Cake

Another cake run today, this time out on the SQ4. The chain guard is not sorted and is going to need to come off again for some serious adjustment!

The weather was great though and the trip to Cley and back was uneventful, save to remind me what a lovely part of the world we live in. Here's the SQ4 enjoying a break at Glandford:


After a 24 mile round trip with no misfire, but rather slow (there is a lot of traffic around here in the summer) we have these results, taken with the engine running in the yard and measured immediately upon arrival:
  • 210°C on the fins near No.2 spark plug
  • 151°C on the inlet manifold flange - near the offside carburetter stud
  • 109°C on the carburetter flange, 1/2" from the 151°C measuring point but on the other side of the phenolic spacer. That's a 42°C differential across the spacer.
  • 87°C on the float bowl. This is much higher than usual and I think reflects the fact that the day was not windy and I was travelling rather slowly. There's more convected energy than I thought and I've decided that a heat shield may be in order
Whilst there was no misfire,  I think I could detect that the engine was not running as happily as before.

Ambient was around 23°C for most of the trip. I measured the other cylinder head temperatures as well and added them to my chart with some previous tests:


When I returned, I noticed a small leak from the oil tank cap. I'd given it an extra twist before I left in an attempt to seal it, so I'm sure the seal is not thick enough.

Sunday, 3 June 2018

A few little jobs

Sunday dawns, with yet another day of misty coastal weather. Everyone is in need of a slow day after a couple of weddings and a party, not to mention a busy week at work and a visit to the dentist, which left me lighter in the wallet and in the quantity of molars residing in my mouth.

So, all in all a good chance to get some quality garage time starting with a good clean for the Bantam, and the beginning of a clean for the SQ4, alongside a new rack for the TIG welder and some other workshop developments.

There's not too much to be done on the SQ4 now. I had a few transfers from Draganfly during the week, which I fitted today with some Halfords petrol resistant lacquer:

Toolbox and Oil Tank dry transfers

Waterslide transfer on the rear number plate holder
I noticed while out and about that I am not using the whole clutch lever and that sometimes I cause the clutch to drag by not pulling it in completely. I decided to move the lever up the handlebar, to the other side of the dip switch, so I could use the whole lever:


This is actually the correct position, according to the Owners Guide:


And here is the reality:

Monday, 28 May 2018

Shakin' Strumpshaw Steam Rally

This years Strumpshaw Steam Rally provided the perfect opportunity for a decent ride, a lovely day out and the chance to shake out some more SQ4 problems.

Strumpshaw is a village in my home county of Norfolk located on the northern bank of the River Yare around 6 miles south-east of Norwich within the Broads National Park. The village lies a little distance from the river, on the slopes of Strumpshaw Hill, the highest area of land in the Norfolk Broads.

Strumpshaw Hall lies closer to the river, next to the Yarmouth & Norwich railway line from Norwich Thorpe to Yarmouth Vauxhall, first opened in 1844. It is the home of the Strumpshaw Hall Steam Museum, with a collection of traction engines, steam rollers, 100-ton working Beam Engines, a Narrow Gauge Railway, a 1930s Fairground, Mechanical Organs and much Memorabilia collected over many years by the Key family.

The Strumsphaw Steam Engine Rally is held each Spring Bank Holiday Weekend in the beautiful parkland grounds of Strumpshaw Hall. The rally hosts over 50 traction engines in steam and some 350 other exhibits including vintage tractors and heavy horses, stationery engines, fair organs, working demonstrations of steam and tractors, classic cars, trucks, fire engines and motorcycles.

It's the perfect spot for a ride out to meet the grandchildren, especially if the weather promises to be sunny.


The ride down quickly revealed that the steering problem had been fixed by proper adjustment of the wheel alignment, but that the chainguard was still a problem.


This KTM was the only bike to join me in the car park... It looks like all the other bikers registered their bikes as exhibits and got in for free:





The best part of the shakedown was the results from the carburetter temperature testing. After a 69 mile round trip with no misfire, and a 22 mile trip back at 55-60 mph we have these results, taken with the engine running in the yard and measured immediately upon arrival:
  • 208°C on the fins near No.2 spark plug
  • 131°C on the inlet manifold flange - near the offside carburetter stud
  • 80°C on the carburetter flange, 1/2" from the 131°C measuring point but on the other side of the phenolic spacer. That's a 51°C differential across the spacer.
  • 47°C on the float bowl.
Ambient was around 20°C for most of the trip. I measured the other cylinder head temperatures as well and added them to my chart with some previous tests:

Looking at these results, there is an issue around the focus of the thermometer. Normally I point the targeting laser on the plug body from about 15" away, which probably means we are measuring a 2" circle around the plug body; for Test 5 I aimed the laser at a fin and probably ended up measuring the plug insulator, explaining why the temperature is much higher. Consistency is the name of the game as any test engineer will tell you.

It appears that I haven't fixed the oil tank cap leak - maybe the gasket is not thick enough. I think it is better as the oil wasn't in the toolbox this time, but we have not solved that one yet!

And as the day drew to a close, I was left wondering how many of the Strumpshaw Ten Commandments might apply to riders of Square Fours...