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Messages - AWJDThumper

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Singles / Re: C15 ignition switch
« on: 17 December, 2017, 13:54:47 »
Hi Phil.

Your harness is from a late C15/B40 as shown. Hope this diagram helps.

The Star and Garter / Re: DVLA Woes
« on: 15 December, 2017, 10:59:20 »
I guess the main concern I have on this issue is that, although I have no intention of getting an MOT for the B40WD at this stage, I might get problems in the future. Basically, if the MOT tester checks the frame number against the DVLA online data, they will find they do not match - half the number is missing from the V5C. I'm sure I could persuade my local friendly MOT tester that a mistake was made when the bike was first registered but I would prefer to sort the problem out now.

In addition, if I was to try to sell this fully restored B40WD to a knowledgeable buyer in the future, the wrongly recorded frame number might be a big issue to them. The bike is also recorded as being built in 1966 on the V5C, whereas, it was actually one of the last built in 1969 - again, this wrongly recorded data might be an issue to a potential knowledgeable buyer. For all these reasons, and because I have a fundamental dislike of being messed around by civil servants having worked for the MOD for 20 years, I intend to get the DVLA to properly amend the V5C. Will let you know how I get on ;D

The Star and Garter / Re: DVLA Woes
« on: 14 December, 2017, 17:48:11 »
Most sorting offices have a DVLA pouch according to a postie I know which is apparently secure.
As indicated, I suspect I upset the normal reliable means of delivering post to the DVLA by getting someone at the sorting office in Swansea to sign for it >:(

Mike, you're right - it doesn't really matter to me in one sense whether DVLA amend the V5C or not - the bike is perfectly legal already. However, I'm determined to get the DVLA to amend the V5C and definitely won't be put off by all the onstacles they appear to be throwing in the way :)

Singles / Re: B44 gearbox leak
« on: 13 December, 2017, 19:14:58 »
There's only a limited number of places it can leak out of the gearbox from - however, since it can creep along the bottom of the engine before dropping on to the floor, it can be difficult to determine the source. If wiping the bottom of the engine dry of oil before trying to see where it runs from doesn't work, you could try using a couple of lines of plumbers putty or plasticine fixed to the bottom of the engine to force any oil that might leak out near the gearbox sprocket or from the inner or outer timing covers to drip down before it gets to the middle of the engine. That might then isolate where the oil leak is originating.

The Star and Garter / DVLA Woes
« on: 13 December, 2017, 17:47:18 »
My B40WD was first registered in 1982 but, for some reason, only the serial number was recorded on the V5C for the engine and frame numbers - both numbers match but are missing the model designation, namely, B40GB signifying that it was originally issued to the army.

I tried to persuade the DVLA to add B40GB on the front of each number but they insisted on being shown proof that this was how the bike left the factory. In the end I decided to try and do this via a Dating Certificate from the BSAOC.

I sent the letter and Dating Certificate to the DVLA by recorded delivery and noted that it was recorded as having been delivered on 2 Nov. Today, having waited 6 weeks, I phoned the DVLA up to find out what was holding up my amended V5C. They told me the letter and Dating Certificate had not arrived!

Counter to what might have been expected, it was actually the Royal Mail sorting office in Swansea who signed for the letter, presumably on behalf of the DVLA. It then got lost between the sorting office and the DVLA. There's a small chance that they might find the letter from the tracking information but I have decided to start the whole process again with another Dating Certificate from the BSAOC.

The moral of the story is: don't send documents by recorded delivery to the DVLA - it will not confirm that they have got the documents and, by adding an extra step in the delivery process, might actually increase the risk of it getting lost in the post. My approach in future will be to send any documents by 1st class post and then phone them up a few days later to confirm they got it.

The Star and Garter / Re: Balancing on a bike
« on: 11 March, 2017, 12:08:05 »
The other characteristic of my Virago, is the way its track moves about on the road. It takes concentration to hold a line. My C15 holds well without effort.
I think there's something wrong with the suspension or wheel alignment on your Virago - a larger trail should make it want to go in a straight line and not want to go left or right.

The Star and Garter / Re: bsa b33
« on: 11 March, 2017, 12:03:16 »
The problem you have is that you have not have paperwork linking the frame number to a registration number, such as old tax disks or an old style log book. So, even if you knew the registration number, DVLA would not be able to issue you with a V5 for it.

Unfortunately, if you want an old style registration number (rather than a modern one), your only route is to apply for an age related registration number. The process for doing this is explained on the web site but, essentially, you will need an MOT'd bike to start with and then you will need to apply to the Dating Officer for a Dating Certificate. With this, an age related registration number and V5 can then be applied for from DVLA.

Even with the necessary paperwork linking the frame number and registration number, it can still be a bit of a pain getting a V5, although not quite as bad as the age related number route.

Singles / Re: B44 Head Gasket
« on: 10 March, 2017, 13:56:07 »

I contacted 3 more suppliers this morning and, although the head gasket thicknesses varied, the max thickness I was able to find was 44 thou. I have one more supplier I can try when he's back tomorrow who specialises in BSA unit singles and, if any one can provide a thicker head gasket, he will be the man.

If not then the next best solution may be to get the fire ring skimmed depending on the cost.

Singles / Re: WD B40 Fuse
« on: 10 March, 2017, 13:50:00 »
Sorry for being 'electrically dumb' but when you say "..on a 6V classic bike, 15/16A fuses should be ok with half that rating needed for a 12V system..." what amp fuse should I use?
I would go for 15A fuse whether it is a 6V or a 12V electrical system since it is basically protecting the wiring which is rated the same for both.

Singles / Re: WD B40 Fuse
« on: 10 March, 2017, 09:19:42 »
You need to use the lowest fuse rating possible to give maximum protection to the wiring harness. Normally, on a 6V classic bike, 15/16A fuses should be ok with half that rating needed for a 12V system. The particular type of fuse used (glass, continental, blade etc) doesn't matter very much since you're basically just protecting the wiring harness from damage.

Singles / Re: B44 Head Gasket
« on: 10 March, 2017, 07:05:35 »
The simplest solution would be to get a head gasket of the correct thickness. I'll normally have a go at making most things but I know making a head gasket without the proper tooling is way beyond my capability to do accurately enough. I'll try a few dealers this morning for you after I've mucked the horse out!

Singles / Re: B44 Head Gasket
« on: 09 March, 2017, 17:32:21 »

There are some other suppliers who might have one - I'm happy to give them a ring tomorrow morning and will let you know how I get on.

In terms of making one, I think you may be being a bit optimistic unless you've got the necessary tooling to do this accurately - trying to make one using hand tools would be very difficult. The last thing you want is for the head gasket to fail a few weeks after putting the bike back on the road!

Singles / Re: B44 Head Gasket
« on: 09 March, 2017, 12:51:13 »

I would try phoning a few of the normal suppliers and ask what thickness they have available - hopefully, one will have a 47 thou head gasket for you. Unfortunately, they can be found with a variety of thicknesses with 36, 40 and 47 thou being the usual sizes.

Twins / Re: A65 Lightning carburettors
« on: 08 March, 2017, 17:36:26 »
Data listed for your 1968+ engines with those valve sizes and compression ratio are:


930/34 + 930/35
main:         180
Needle jet:  106
slide:          3.0 cutaway
pilot:          20


main:         230
Needle jet:  106
slide:          3.5 cutaway
pilot:          20

The Star and Garter / Re: BSA Thunderbolt OCY 681 F
« on: 08 March, 2017, 17:07:33 »
Doesn't look as though it's been taxed since 1989!

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