Motorcycle General Discussion

[Ian S CParticipant @iansc]

Sad day for speedway fans, Ivan Mauger died today at 78yrs, although well known in Christchurch where he came from, he was probably better known in Britain, and Europe.His main years of racing were between 1968/79. 6 World Championships, 3 Long Track Championships, 4 World Team Cups. Twice NZ sportsman of the year.

Ian S C

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Windy on 12/04/2018 17:42:49:

Here is a link to the pressure vessel being made plus a test blast.

**LINK**

.

Awesome

[JimmieSParticipant @jimmies]

As some Northern Ireland lads may already know the new MOT rules do not apply locally. This is a reply to my query from the powers that be on the matter. 'On 20 May 2018 the Department for Transport in Great Britain will extend the existing exemption from periodic testing for motor vehicles first registered prior to 1960 in England, Scotland and Wales, to cover all “Vehicles of Historic Interest” (VHIs). The new exemption will include the majority of privately owned vehicles which are over 40 years old, and will apply on a rolling basis to in-scope vehicles as they become 40 years old. This provision was included in legislation which was implementing mandatory EC Directives on periodic testing. This exemption will only apply to Great Britain and will not extend to Northern Ireland. The Department is however planning to launch a consultation on Regulations implementing a similar VHI scheme in Northern Ireland at the earliest possible date. It is currently intended that the consultation will issue this spring (details of this will be made available on the Department’s website). Subject to the outcome of the public consultation, and ministerial engagement, it is intended that a VHI scheme be introduced in Northern Ireland as soon as possible. You may wish to note that at present, an exempt VHI coming from GB to Northern Ireland on a permanent basis would be subject to regulations here and would therefore require an MOT.'

[clogsParticipant @clogs]

I bought my first Vincent as I couldn't afford a Harley, Duo glide day's………ended up with 3 original's, 2 B's and a C plus 1 Norvin…….would have been cheaper to get a mortgage for a Harley…….

what utter rubbish the Vincent is….

an A series is a different matter tho…….

shame they didn't make more in number of JAP V twins………

sold the lot plus all the spares before the heady days of mad values but they bought my first terraced house……..

ended up with a very early Electra Glide and never looked back……..

now got an Indian Scout and a 4 cylinder on the way up……..

Mr.T-Guzzi, how correct u are………

[MeunierParticipant @meunier]

Back in the early '70s one of our club members had a Vincent and I used to drool over it.
Fast forward a couple of weeks and he turned up on a Honda CB400 ?
When I asked him what happened to the Vincent he replied that with an electric start he could spend more time enjoying riding it than starting it.
DaveD

[colin wilkinsonParticipant @colinwilkinson75381]

I will be going to Stafford Classic Bike show this weekend displaying the Greeves Oulton on the Greeves Riders Association stand in the main hall. Anyone else going? Colin

[Chris Evans 6Participant @chrisevans6]

Colin I will be there on Saturday scouting round for pre war BSA parts, I will try and find you to say hello. Chris.

[HopperParticipant @hopper]

Posted by thaiguzzi on 11/03/2018 06:33:58:

Always liked the Sportster motor in a Featherbed frame. Fills the space nicely, and, IMHO looks a better fit than any Brit parallel twin. Just looks "right".

It fills the new Featherbed frames they are making that are an inch or more taller than the originals. Sporty engine in an original Featherbed frame has the rocker boxes half hidden up under the tank, between the top frame rails and always looks oversized to me. I built one with an Ironhead Sporty motor back in the 80s and getting the engine in the frame consisted of lie engine on side on garage floor, finagle frame top rails down over rocker boxes, set bottom rail on the oil pump, jump on frame to spring it past the oil pump and into position, then stand the lot upright and make engine plates using technique similar to building ship in bottle for the rear mount.

I also have a 45 Flathead motor in a Featherbed, which to me looks much more correctly proportioned. But nowhere near as much barn-storming fun! (Until I get around to putting the stroker flywheels and Leinweber cams in it.)

[JimmieSParticipant @jimmies]

Piece in new issue Classic Bike on setting up and machining new crankcases. Why do they make it seem so easy.

[JimmieSParticipant @jimmies]

Piece in new issue Classic Bike on setting up and machining new crankcases. Why do they make it seem so easy.

[Bob RodgersonParticipant @bobrodgerson97362]

Cause it is Jimmy,

here's one I did earlier. Cut from solid on a round column cheap manual mill and an 8"rotary table. Finished off with a Dremel and lots of elbow grease followed by shot blasting to make it look cast. Everything you see there except the cylinder, cylinder head and cam box are made in the home workshop. It's a 1929 Humber 350 OHC.

[Jeff DaymanParticipant @jeffdayman43397]

Nice work Bob, looks great. Has it got the original Humber crank rod and piston inside?

[ronan walshParticipant @ronanwalsh98054]

Nice work bob. I bought a set of triumph tiger 70 crankcases last week, and was amazed how thin they are in places. No wonder they broke or cracked so often.

[Graham TitmanParticipant @grahamtitman81812]

Fantastic piece of work Bob

[Bob RodgersonParticipant @bobrodgerson97362]

Hi Jeff,

I made a crankshaft up from an original pair of flywheels and had three sets of spiral bevel gears cut for the bottom end cam drive.

Bob

[Bob RodgersonParticipant @bobrodgerson97362]

Hi Jeff,

I made a crankshaft up from an original pair of flywheels and had three sets of spiral bevel gears cut for the bottom end cam drive.

Bob

[Bob RodgersonParticipant @bobrodgerson97362]

Hi Ronan,

Triumph cases are very thin in comparison to the BSA parallel twin cases. The beauty of using billet material is that the material is consistent throughout and can be machined with constant thickness and be beefed up where required without affecting the outward appearance too much.

[ronan walshParticipant @ronanwalsh98054]

Posted by Bob Rodgerson on 25/04/2018 17:18:58:

Hi Ronan,

Triumph cases are very thin in comparison to the BSA parallel twin cases. The beauty of using billet material is that the material is consistent throughout and can be machined with constant thickness and be beefed up where required without affecting the outward appearance too much.

Well triumph were always trying to get their bikes lighter than the competition, sometimes making their machines flimsy imho.

Looking forward to seeing the rest of your machine Bob.

[JimmieSParticipant @jimmies]

'Cause it is.'

 

Bob

Only to those skilled and capable of preforming such tasks.

Jim

Edited By JimmieS on 25/04/2018 19:24:03

[Bob RodgersonParticipant @bobrodgerson97362]

Seriously Jim, I contend that anybody who has built a model locomotive or model I.C. engine should be able to make their own cases from solid. It does take skill and more than anything determination and a willingness to accept that if it goes pear shaped you have wasted a lot of money on a large chunk of aluminium.

A bit of research and permission to take a bunch of pictures and measurements at the National Motorcycle Museum was required to provide the basis as well as similar cases from the 350cc Side valve model to copy from. A profile drawing was made and the first process after that was to machine the internal cut out for the flywheels and bearing housings. This was followed by the outside profile and then the contouring of all the various external features, leaving material that couldn't be machined to be finished with the Dremel.

[davebParticipant @daveb17630]

Posted by Meunier on 16/04/2018 20:22:57:

Back in the early '70s one of our club members had a Vincent and I used to drool over it.
Fast forward a couple of weeks and he turned up on a Honda CB400 ?
When I asked him what happened to the Vincent he replied that with an electric start he could spend more time enjoying riding it than starting it.
DaveD

The Lucas magneto didn't do the bike any favours and you really didn't want to spent too long kicking the thing over. The differnce is that they are now worth enough to spend the money to sort them out, but if you want it to be completely original, that's another thing altogether.

[WindyParticipant @windy30762]

For the high speed Lads and Lasses it's Pendine speed attempts this weekend then following week end Elvington records.

**LINK**

[Ian ParkinParticipant @ianparkin39383]

Today a neighbour asked if i wanted to rebuild this for him ?

so in my back yard I now have a huge jigsaw of many boxes of bits

[Philip BurleyParticipant @philipburley44197]

To go to the other extreme , My son has had a Power Pac !950 s . bike engine given him . , Cant get a spark on it though . I expect the coil had had it , How can I adapt the points system to an external coil and battery ?

regards

[clogsParticipant @clogs]

Hi Philip,

shouldn't be so hard to do……post some photos…….

if u get lucky with the mod u can go the 12v route…much better for everything……clogs

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