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Messages - robin smith

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1
Twins / A10 Mystery leak ?
« on: 01 February, 2018, 08:59:51 »
 
With a hint of improving temperatures, I decided to drain the sump of my BSA A10 ready for its first outing of the year. After a couple of attempts it fired up and ticked over sweetly much to my delight, that is until observing oil dripping from behind the primary chain case. How could this be, with the sump clear of excessive lubricant?

First, the check for end float on the cam pinion top hat breather . OK!

Next, check the oil pressure release valve. OK!

Then, drop the sump plate and check the ball bearing in the scavenge pipe was clear. OK!

Now I was completely mystified, until remembering the 2 pints drained from the sump and returned to the tank had not brought it up to its previous level! Therefore, where had the missing oil gone?

The answer:
This bike had been parked up on its side stand since last September, with the oil level slowly rising in the crank case until reaching the crank shaft oil seal where it made its way into the primary chain case! Hence, with the engine running the excessive oil was being thrashed around by the clutch and forced out along the gearbox main shaft!

Can you think of a better way of spending a Saturday afternoon?

2
Twins / Re: RGS inner primary chain case
« on: 01 October, 2017, 18:05:36 »
A month has passed since posting this question in the “twins” section of the BSA workshop:

What type of inner primary chain case was fitted to a Rocket Gold Star?   

Amazingly just two fellow members have offered up plausible but not definitive answers, despite well over 200 views!

With the asking price of an RGS now often exceeding £20,000, it would be good to know precisely what a prospective buyer should look out for, which is not easily faked.

3
The Star and Garter / Rocket Gold Star inner primary chain case
« on: 01 October, 2017, 17:59:08 »
A month has passed since posting a question in the “twins” section of the BSA workshop:

What type of inner primary chain case was fitted to a Rocket Gold Star?   

Amazingly just two fellow members have offered up plausible but not definitive answers, despite well over 200 views!

With the asking price of an RGS now often exceeding £20,000, it would be good to know precisely what a prospective buyer should look out for, which is not easily faked.

4
Twins / Re: “Daylight MOT”
« on: 18 September, 2017, 20:16:52 »
"There is nothing to say you cannot refit the brake light post MOT for safety!"


That’s precisely what I did Lionel!

5
Twins / Re: RGS inner primary chain case
« on: 16 September, 2017, 22:12:43 »
I am aware the RGS was more or less a shelf clearing exercise of  the remaining parts from the out of production Gold Star, and later the Super Rocket.

However, the question remains, which models were fitted with the un-drilled extended inner chain guard and why?

6
Twins / Re: RGS inner primary chain case
« on: 16 September, 2017, 08:58:14 »
It would appear surprisingly, by the lack of response on this particular subject. I should merely shrug my shoulders when asked this question. 

In spite of the wealth of knowledge you guy’s have out there!

7
Twins / Re: Recommendations for magneto repairs
« on: 08 September, 2017, 09:15:49 »
        I highly recommend Tony Cooper of TC Motorcycles 0121 5592405
             (Without your wallet experiencing huge weight loss!) 

8
The Star and Garter / Re: precision engineers in worcestershire
« on: 07 September, 2017, 19:36:22 »
Try Roger Kordas (01886 832502) who has come to the rescue of many Worcester VMCC members.

9
The Star and Garter / Re: “Daylight MOT”
« on: 07 September, 2017, 09:09:35 »
Thanks for that to cee - b

I have checked-out http://www.motuk.com/bike/manual.asp and discovered the following, which I find a little confusing in parts or is my advancing which is the problem?

Machines first used before 1 April 1986 must have a stop lamp that operates from at least one brake control.

Machines first used on or after 1 April 1986 must have a stop lamp that operates from both brake controls.

Stop lamp: All machines, except those which have neither front nor rear position lamps, or has such lamps permanently disconnected, painted over or masked that are only used during daylight hours, and not used at times of seriously reduced visibility

Horn (Audible Warning) A motor bicycle first used before 1 August 1973 may be fitted with a bulb horn.

10
Twins / Re: “Daylight MOT”
« on: 07 September, 2017, 09:06:08 »
Thanks to cee - b

I have checked-out http://www.motuk.com/bike/manual.asp and discovered the following, which I find a little confusing in parts or is my advancing which is the problem?

Machines first used before 1 April 1986 must have a stop lamp that operates from at least one brake control.

Machines first used on or after 1 April 1986 must have a stop lamp that operates from both brake controls.

Stop lamp: All machines, except those which have neither front nor rear position lamps, or has such lamps permanently disconnected, painted over or masked that are only used during daylight hours, and not used at times of seriously reduced visibility

Horn (Audible Warning) A motor bicycle first used before 1 August 1973 may be fitted with a bulb horn.

11
The Star and Garter / “Daylight MOT”
« on: 06 September, 2017, 16:20:39 »

Having just received my September copy of the Star. I read with interest the article by Richard Stephens regarding his 1960 Spitfire restoration.
He states, despite it going to have a “Daylight MOT” a stoplight  is required by law!

Some time ago I took a bike with no lights “but with a stoplight fitted” for its annual MOT. To be told no lights meant just that! Requiring me to remove the stop lamp for it to pass!

He also states, apparently a “bulb horn” is no longer legally acceptable ?

Do we have any legal eagles out there, to clarify this potential confusion?  Who knows in the event of an insurance claim these details could be relevant!   


12
Twins / “Daylight MOT”
« on: 06 September, 2017, 16:17:48 »
Having just received my September copy of the Star. I read with interest the article by Richard Stephens regarding his 1960 Spitfire restoration.
He states, despite it going to have a “Daylight MOT” a stoplight  is required by law!

Some time ago I took a bike with no lights “but with a stoplight fitted” for its annual MOT. To be told no lights meant just that! Requiring me to remove the stop lamp for it to pass!

He also states, apparently a “bulb horn” is no longer legally acceptable ?

Do we have any legal eagles out there, to clarify this potential confusion?  Who knows in the event of an insurance claim these details could be relevant!   

13
Twins / Super Rocket ignition timing
« on: 05 September, 2017, 09:05:38 »
I was recently in discussion with a well-known magneto restorer on the subject of Super Rocket ignition timing. He suggest 3/8 or even 7/16 BTDC would be possibly more appropriate with modern fuel, as apposed to the 5/16normally applied by myself.

I would be interested to know your views regarding this subject  

14
Twins / Rich running Super Rocket
« on: 17 August, 2017, 10:09:02 »
I have an Amal 389 fitted to my Super Rocket, set up as per book! However, despite removing the air cleaner and dropping the needle to the first groove, the engine is still running rich!
I would be most grateful if anyone has the cure, before I pull out what’s left of my hair! 

15
Twins / Re: RGS inner primary chain case
« on: 05 August, 2017, 10:18:06 »
Having owned and ridden a Gold Star fitted with Super Rocket engine for almost 40 years. During that time, having lost count of the times I have had to explain, this is not in fact Rocket Gold Star!

Then attempting to point out the difference between a genuine RGS and my GSR! Consequently, the question of what is the correct type of inner primary case as arisen at times, hence my enquiry on this forum.

I totally agree with you “If the owner is happy with his bike does it actually matter?”

But obviously to some it does!  Particularly with so many so called replicas in circulation.

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