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Messages - R

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1591
British Bikes / Re: methanol jap
« on: February 21, 2011, 01:11:32 AM »
JAP 4B covers a lot of years, and specs, so depends on the year a bit.
Can't see it quoted in the specs anywhere.

Cooper F3 cars went to Manx engines, because it is mentioned the Manx puts out more hp than the 4B at the time (1950).  So you'd be looking at about 35 to 40 bhp (?).

Opethiselps.

1592
Identify these bikes! / Re: Kreidler
« on: February 21, 2011, 01:00:46 AM »
I notice on U-Tube there is a video with a much later Kreidler with Minarelli engine - didn't watch it all to see if it actually showed the bike, but maybe there is some connection later on in Kreidler history ?
May explain an engine transplant if that is indeed what happened ?

Also notice on ebay this entry
http://cgi.ebay.co.uk/Kreidler-50cc-Minarelli-SP6-engine-classic-racer-/180617640617
Lotsa hard to find bits already provided !!
Interesting buy, bargain price.
And some keen bidding ?
Make sure you keep us updated with what you find out...

There is a Kreidler forum, in Dutch.
May get some info there, if can negotiate the language barrier ?
They probably speak english...
http://www.kreidler.nl/forum/viewtopic.php?t=23384

hth

1593
Identify these bikes! / Re: Backtage bike
« on: February 19, 2011, 11:03:12 PM »
Says 500 on the sidecover, so it has to be a Kawasaki 500 triple 2 stroke. ?
Was that the Mach 1 ?  (and the 750 was Mach 3 ?).
No idea of year or model, over to you.

Nice legs, shame about the missing bits.....

1594
Identify these bikes! / Re: Kreidler
« on: February 18, 2011, 12:30:10 AM »
Mmmm, this Kreidler is said to have come 2nd in the championship in 1962.
http://www.elsberg-tuning.dk/images/61kreidler12speed.jpg

Definitely a family resemblance there.
Although obviously the motor is an interesting question.

1595
British Bikes / Re: BSA A7
« on: February 17, 2011, 01:59:07 AM »
Looks like you click "additional options" (below) and then work on the "attach" box.

Plunger Star Twins only look to be 1950 to 1954.
Look anything like this ?
http://motorbike-search-engine.co.uk/classic_bikes/bsa_a7.jpg


1596
British Bikes / Re: Machine Examination Day
« on: February 15, 2011, 09:56:32 PM »
Not familiar with Thor forks at all, but it appears there are springs up inside the main fork legs, and they are acting in extension with those leading link forks.

Must have been interesting getting/setting the correct spring strength...

Hopethishelps.

P.S. Thanks for the Thor pic, speedo.
They must be thin on the ground. ?

1597
British Bikes / Re: Machine Examination Day
« on: February 14, 2011, 01:42:27 AM »
The front numberplate of that 1000c Thor sure looks interesting....

P.S. not very British, are they ?!

1598
British Bikes / Re: BSA A7
« on: February 13, 2011, 01:52:05 AM »
Yes. The book of "Motorcycle" Road Tests tested a Star twin, originally 17 April 1952 - the Star Twin was the sports model of the A7.

"Now with the redesigned semi-uni construction engine", single carburettor, plunger rear suspension, 8" front brake.
And "handsome Star Twin insignia" on the panelled and lined silver tank, cycleparts black.

Same magazine tested an A7 twin for 1951, red finished tank, 7" brakes.

1599
British Bikes / Re: Ever Onward
« on: February 11, 2011, 04:04:54 AM »
JAP didn't supply whole speedway bikes either ? - didn't Wal Handley have something to do with the all conquering JAP Speedway bike, and frame production ?  Prior to that, a number of manufacturers had had a speedway model, some doing quite well in the early years of Speedway (late 1920s).

Brough Superior certainly built a v-twin model with Barr and Stroud, but whether it went beyond being a prototype, like you say ??

I've ridden as a passenger in a Veteran Car Club run, where a little Daimler Knight cicrca 1911 purred along in front of us. Owner later said he'd initally had a bit of trouble after building it up, but some suzuki pistons and 2 stroke sleeves and modern oils solved some problems, and it became quite a reliable runner.

1600
British Bikes / Re: Ever Onward
« on: February 10, 2011, 11:24:11 PM »
It is perhaps worth pointing out that the Barr and Stroud engines were only ever supplied as engines, in rather small quantities, so there is no real make that can be associated with them ? Did the v-twin Brough version survive ?

And we diverge, but there was a story that came out of WW2  and the sleeve valve engined Typhoon. Apparently on startup they were somewhat tempermental - for which reason the pilots had written on the nose of the aircraft "If this engine catchs fire on startup, don't just wave your arms, do something about putting the bloody thing out".    Marvellous aircraft otherwise, apparently...

1601
British Bikes / Re: New imperial
« on: February 10, 2011, 11:12:06 PM »
A good starting point may be The New Imp Owners website ?
http://www.newimperial.co.uk/support.asp
They mention pistons, which is always a good sign.

Often, things like cables can be made up from universal types.
And gaskets can be hand cut - if not available.

Owners of long out of production bikes should be prepared for the possibility that things simply are not available, and may have to be made up specially to order. NEVER EVER throw away anything, even if totally worn out.

Think yourself lucky that you do not have the only example of the Spagforth Whippet Mk2 ??

hth.

1602
British Bikes / Re: NEGATIVE EFFECTS OF ETHANOL
« on: February 07, 2011, 09:33:14 PM »
This is where the story gets a bit murky - petrol is allowed, by law, to be up to 5% water. (is it ??)   This is before ethanol appeared on the scene.

This fact emerged when some petrol stations started pumping neat water into folks fuel tanks - with predictable results.

It seems the underground tanks contain some water, which is hard to exclude, and the petrol simply floats on top, and is pumped off the top and sold to customers. As long as the underground tanks don't fill with water, all is well....

Petrols used to contain something that grabbed any stray water in your fuel tank, and bound it up chemically within the fuel - hence the 5% bit.

So does ethanol not blend with petrol, or separate out in some fashion that is the problem ? 


1603
British Bikes / Re: NEGATIVE EFFECTS OF ETHANOL
« on: February 07, 2011, 05:22:12 PM »
When my throttle cable unravelled inside, and the car in front was looming fast, I can assure you that pulling in the clutch was an instant reaction. As was applying BRAKES !!!

Sorting out the engine was a distant last priority. But unless you were riding beserko, full throttle is unlikely to be in the equation ?. Although not something that I'd wish to test, I would agree.

It still doesn't explain why bio ethanol is getting all this bad press, when ethanol is so stable a product  What does the bio do to it .... ?


1604
Identify these bikes! / Re: Dating a Bosch Magneto
« on: February 07, 2011, 05:09:04 PM »
It is mentioned somewhere that the "VCC" published a list of Bosch maggie data about 30 years ago.

Presumeably this is the Victorian Car Club, or Vintage car Club, or Vintage MC Club ?  Ring any bells....

1605
Identify these bikes! / Re: Need help identifying the bike in these photos
« on: February 07, 2011, 05:06:07 PM »
The BSA is a Blue Star, circa 1936.
These came in 350 and 500 versions, maybe someone can pick which this is.
e.g. http://home.planet.nl/~leonhop3/1936_r20.jpg
No mufflers on your grans bike, which is interesting.

Indian looks to be a Scout sidecar model, electrically equipped.
Has a front brake, and tank between the frame rails, so its going to be the famous 101 model, circa 1928-30.
750cc v-twin, although a few of them were 600cc.
Said to be one of the best models of Indian ever made.
Highly collectible, and still quite rideable these days,
If you master the suicide clutch...

Great pix.

hth.

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