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Twins / a7 oil tank dowty seals?
« on: 14 September, 2017, 10:28:41 »
Anyone tried dowty seals instead of fibre washers on the oil tank banjo on a 1957 A7? If so what sizes did you use.

Twins / End Float
« on: 04 September, 2017, 15:20:38 »
I have an a65 with 12 thou of end float. As soon as the engine fires up it pulls the crank to the timing side. With a DTI on the stator end revving gently it stays this way, only on stopping the engine does it "clunk" back to the left as it literally stops. I stupidly forgot to check end float when the engine was apart for a gearbox problem earlier in the year. The engine has done very little mileage for approx. ten years and has had the timing side bush done just before I bought it last year. I am presuming that the end float was incorrectly set up then. So far I have added about 2k to it with only about 400 miles since I noticed the issue and as it will have the engine stripped totally in a few months I was wondering what the general consensus was regarding still using it? Oil pressure is spot on and from the crank and timing side bush drawings the oil will never be cut off to the rods. I can see the possibility that the oil pump outer casting may touch but my opinion is I would need about 20 thou to have that problem. Am I looking on the bright side or am I leaving myself open to a catastrophe I have over looked! I have the Distinguished gentleman's ride in a few weeks and hoping for a few more jaunts before winter but that's about it really.

Twins / Number stamped into front right engine casing?
« on: 13 June, 2017, 19:23:53 »
I have noticed a number stamped into my engine casing on an a65. Very small, reading 806? I can't find any reference to it in any of the manuals. It looks fresher than the engine numbers.

Twins / Gear 68 3120
« on: 11 April, 2017, 13:34:47 »
Does anyone out there know where I can get a 22 tooth gear for a 1968 A65, part number 68 3120. My first ride out ended with a van ride home due to one of the gear dogs braking off. I ordered one from a company who I'm guessing might not supply it (see my last post) Back online I went and now I'm really struggling to find one, nearest so far is the Netherlands!
Summers not looking bright at the moment :'(

Twins / Supplier problem.
« on: 11 April, 2017, 13:20:41 »
Hi all,

I have ordered a gearbox part from a CBM ( I parted with my cash and received an invoice back on the 2nd April. Has anyone had dealings with this supplier?
I have had no parts, no contact and no answers to emails. The phone just rings and rings. I googled the address and its a suburban road with just ordinary homes on it? On surfing further a Norton website member is stating the same problems as I'm having. He lost 200+ so isn't very happy at all. I'm not writing my 70 off just yet but its looking like it!

Here's hoping but maybe a note to check first before using them.   

Twins / A65 gearbox drain plug.
« on: 03 April, 2017, 11:37:13 »
Anyone found a magnetic gearbox drain plug for an a65. I've just had to dismantle the gearbox due to second gear losing a lug so while I was in there I thought I would look into a magnetic plug. 1/2 inch UNC plugs don't seem to be around using the normal google searches etc.

Twins / Made in England decal?
« on: 23 March, 2017, 15:16:10 »
I have an a65 thunderbolt from 1968. The made in England decal is missing from the downtube but I think I have found a mark on the left downtube where it might have been positioned. About level with the exhaust header is a good guess. Would it have been facing upwards or downwards?



Twins / Single seat on a A65 Thunderbolt?
« on: 11 March, 2017, 13:23:31 »

I've trawled the net (as you do!) and can't find anything referring to a single seat option on a thunderbolt. I'm thinking of touring Europe next year and luggage might be an issue. I'm in the process of building a rear rack and thought a single seat with a slightly longer rack might be a neat way of carrying slightly more gear but keeping it tidy.
Has anyone ever seen this model with a single seat, if I have to buy one I'd like it to look fairly original.


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