Recent Posts

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91
Pre War / Re: B35/2 1935 brake light switch
« Last post by Dripfedfloor on 23 March, 2024, 10:21:22 »
Re brake lights. Up until the 30th of March 1935 brake lights were not compulsory and were often not fitted to vehicles. From the 31st March 1935 brake lights became compulsory on all new vehicles. So if your bike was registered before 31st March 1935 a brake light is not compulsory. However, it is obviously safer to have one.

That's incorrect. The act that came into force in 1935 only required that a brake light, if fitted, had to work. They didn't become compulsory until the 1953 Road Traffic Lighting Act which came into force in October 1954. This act also required a reflector to be fitted. A number of Austin A30/A35 had to be recalled to have brake lights fitted so I've read. There were probably others recalled to correct this as well.

As I've mentioned, the Lucas Master Parts List does NOT show brake light switches being made prior to 1951. In the vehicle fitment section there are clear references to older lamps (MT110/MT210/MT211) being used post war as late as 1950. These lamps are single filament bulbs and do not have a brake lamp facility. As an example this list shows my 1947 Triumph Speed Twin as having an MT110 tail lamp. No brake switch is listed for it....
92
The Star and Garter / Re: A65 valuation
« Last post by iansoady on 23 March, 2024, 09:46:00 »
The key point seems to me to be that it's a value for insurance. I would set that at typical asking prices rather than sold ones. Most classic insurers will accept the owner's valuation provided it is supported by good photos and isn't daft.
93
Twins / Re: Warm Starts
« Last post by rhyatt on 23 March, 2024, 08:13:49 »
Are we talking of "warm" ie not fully warmed up from cold?
Or a hot start where you've been riding - stopped for some reason and then want to restart and continue?

The first may need careful use of tickling or choke as the bike still isn't fully warm

But the 2nd usually requires a larger throttle opening to clear the "cloud" of vaporised fuel gathering in the carb/Inlet tract due to the heat of the engine causing the float chamber to vaporise whist the bike is sitting and hot

Of course there could be hot electrics as well
94
Twins / Re: Warm Starts
« Last post by LightningAndStarfire on 22 March, 2024, 23:47:35 »
Ignition coils or your electronic ignition could be defective. Vapour lock in the carb is less likely.

Do you have 6 volt coils in series? 12 volt coils work but give weaker sparks. Battery should be ok.
95
The Star and Garter / Re: A65 valuation
« Last post by mr.moto on 22 March, 2024, 22:03:40 »
Hi. It seems that most of my previous post disappeared. I was saying that prices have dropped considerably. what was never a popular model is now even less sought after. My opinion of the A65 is that the1968-71 models are more sought after. This early bike with universal mudguards and lack of stays will not make top money. In my opinion this is little more than £3000. While I have been retired from dealing in bikes for a few years I still watch the prices. Looking at an owners club forum or magazine will always get a falsely high price. For a true valuation look at ebay SOLD bike prices.
Regards, Pat A.
96
Twins / Re: A10 valve springs
« Last post by DAVE BRADY on 22 March, 2024, 21:17:59 »
Hi,

The head has been in use for many thousands of miles at this SR spec. so the rocker box etc. is all fine.  My concern is with these specific springs. They look a bit crowded and have the potential to be compressed by about 0.465" before becoming coil bound ( the old springs have about 0.6" before being coil bound). I suppose what would help is the amount of valve opening that the 357 cam gives.  I think it is only about 0.329 so if my measurements are close then it will probably be OK otherwise different springs needed.  Who stocks genuine 'Terry's' these days or is there another good maker?

Dave.
97
Twins / Re: A10 valve springs
« Last post by JulianS on 22 March, 2024, 21:00:52 »
You will need SR springs or the Dow type conversion with Rocket valves. Flash springs are different and dont fit the Rocket collars etc.

The photo shows an Ebor collar/springs fitted to an alloy head, the outers variable rate.
98
Twins / Re: A10 valve springs
« Last post by DAVE BRADY on 22 March, 2024, 20:54:34 »
Hi,

The head has SR valves and so has the SR top caps so as far as I know it needs SR springs. 

Dave.
99
Twins / Re: Warm Starts
« Last post by aso215kd on 22 March, 2024, 20:50:25 »
Oops, yer right I didn't identify the model.  '64 A-65 with an Amal knock off concentric carb and electronic ignition.
100
Twins / Re: A10 valve springs
« Last post by mr.moto on 22 March, 2024, 20:46:30 »
Hi Dave. I do not understand why you think a 357 cam needs rocket springs. Are you aware that rocket models had a modified rocker box to accomodate the longer springs. As a former parts dealer I can assure you that I would have been desparate before I used MCA parts in my engine. The modified rocker box had more clearance for the longer springs.
Terrys own workshop book gives these dimensions:.
set 451454 1950-61 a10 golde4n flash /a7 star twin shooting star 1947-61
outer spring wire dia .156 out dia 1.312 free length 1 7/8" total coils 5 1/4 left hand wound.
inner spring  wire dia 0.98 out dia .843 free length 1 17/32" total coils 6 1/8 right hand wound.
67-439/67-440
set 451463 1953-62 a10 rocket
outer spring wire dia .144 out dia 1.375 free length 2 1/8"  total coils 6 1/4 left hand wound
inner spring wire dia 1.20 out dia 1.145 free length 1 3/4" total coils6 1/2 right hand wound
67-883/ 67-884
best regards, Pat A.
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