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Messages - chaterlea25

Pages: [1] 2 3 ... 24
1
British Bikes / Re: Calthorpe Ivory
« on: January 18, 2019, 09:35:13 PM »
Hi,
I would try and contact the VMCC Calthorpe Marque specialist via a message to the VMCC, and or a message to
Old Bike Mart (monthly vintage bike paper) who publish such requests

John

2
British Bikes / Re: 66 Bonneville T120
« on: January 04, 2019, 10:20:57 PM »
Hi Oggers,
Make sure to follow the manuals instructions for positioning the crank/cam before you adjust the tappets

Correct main jet size is dependent on several different factors, it can vary from one bike to another
and on fuel available, exhaust type fitted, air cleaner type, atmospheric pressure, altitude and more
It can be sized by road testing or better again on a rolling road diagnostic
Remember too lean and you risk piston damage or seizure

John

3
British Bikes / Re: 66 Bonneville T120
« on: January 03, 2019, 11:07:20 PM »
Hi Oggers,
Quote
Needle jet is 220 on my 930 Amal concentric.

Something wrong there??
That sounds like the main jet number ?
You need to remove the part the 220 brass jet screws into and the needle jet is threaded into the top of that
Likely it will have a number like 106 on it
These jets wear and so do the needles, these govern the mixture approximately from 1/4 to 3/4 throttle
so have more influence than the main jet except for WOT running

John

4
British Bikes / Re: Oil
« on: January 01, 2019, 09:43:16 PM »
Hi Moleskins,
Do you pull in the clutch lever and kick through the kickstart lever a few times to free the clutch before you start the bike?
Its a Triumph ritual, I kid you not
10/30 motorcycle oil for me in the primary (suitable for wet clutches)

John

5
British Bikes / Re: Nut Sizes
« on: December 05, 2018, 08:47:55 PM »
Hi Johnny,
Quote
Does anyone have an address of a reputable Home for the Bewildered?  ;D

Looks like you found it here ;D ;D

John

6
British Bikes / Re: Nut Sizes
« on: December 04, 2018, 11:48:10 PM »
Hi All,
Going back to the original question,
There are lots of shit sockets advertised as WW on the net, they are nowhere near accurately sized :o

Try and find proper WW size spanners and sockets from known brands
Search ebay, autojumbles and car boot sales for secondhand Britool, King Dick, Gordon and other UK / German brands

John

7
British Bikes / Re: JAP engine number
« on: November 30, 2018, 08:21:20 PM »
Hi Paul,
That about sounds right, if the engine fits in generally with a 1929 appearance,
twin port would be a style of the times
JAP offered several style options on basically the same engines, (different finning shapes and magneto chain case lengths and placements or maglita driven from the drive side)
The year codes ran from September to August according to my JAP book which can lead to "discussion" when it comes to Whats Vintage???

Remember that JAP reissued the engine year code post WW2
This is why lots of late industrial engines that appear for sale are mis described as "vintage"
Usually the SV engines from the earlier period had cylinder and head as one casting

John

8
British Bikes / Re: Mystery gas tank
« on: October 27, 2018, 11:04:47 PM »
Hi,
A side on photo should help id the tank
The fliptop filler cap and breather in front of it suggest ZB BSA GS,
the front mountings that take the rubber inserts also fit
But!!
I have not seen anything like the rear mountings on a BSA before

John

9
British Bikes / Re: Anyone into Scotts here
« on: October 13, 2018, 05:24:23 PM »
Hi All,
For those interested the Scott and sundry S7 bits made 6,000
The BMW went to 26,000  :o :o ::) ::)
The Matchless made 12,000,
I thought the Matchless would have made a bit more ??? taking into account the value of the Vincent front end ??

John

10
British Bikes / Re: Anyone into Scotts here
« on: October 07, 2018, 08:49:51 PM »
Hi m-m,
Are you trying to throw us off the scent so to speak?  ;D
The Scott and S7 are lot 420
http://www.biddleandwebb.com/lotdetailzoom.cfm?auctionhallid=3&saleid=517&itemuuid=ACF0AA5C-C19E-2008-ADA1E9AF347AC33E&item_imageid=360271

The Matchless with Vincent forks and the BMW in the previous lots should be more in demand ??

John

11
European and Other Bikes / Re: Monet Goyon Identification
« on: October 01, 2018, 10:09:46 PM »
Hi All,
Going OT here somewhat
Quote
Allegedly the quick and dirty way to tell a JAP bike engine from one from an industrial engine is the bike crankshaft will have a tapered crankshaft for the drive while the industrial unit will have a parallel keyed shaft.

Not always the case,
Usually industrial engines will show some evidence of a cooling fan or shroud mountings and quite a lot have either extended crank or cam shafts to drive the cooling fan or for a starting handle

I visited the so called "National motorcycle museum" in USA a couple of weeks age where I saw a JAP 600 industrial engine labelled "JAP from the Teens", (it was more than likely ex Howard Gem rotovator as it was identical to one I have) .. The person in charge was happy to take note of the correction I offered   ::) ::)

John

12
British Bikes / Re: anyone up for a good run out?
« on: September 29, 2018, 02:09:40 PM »
Hi,
It wasn't the adjustable mag sprocket that gave trouble, even thought it was blamed initially, the points rotor screw
came loose and the rotor pressed key "unpressed" to let the rotor slip,
It became apparent quickly that evening after the original sprocket was refitted when the bike fired up and died almost immediately with no spark,

Quote
,just making sure nothing comes undone or falls off........

That's the lesson learned by the owner /rider   ::) ::)

John

13
British Bikes / Re: anyone up for a good run out?
« on: September 27, 2018, 10:08:28 PM »
Hi All,
I am just back home in Ireland after spending the last 3 + weeks in the USA on the Cannonball event
I was there as mechanic and driver of the service van on behalf of two riders, one of whom rode the black Ariel
The second rider had a 23 HD model F (magneto ignition J) that I had mechanically rebuilt over the last year
Unfortunately the HD rider fell ill and was not able to complete many miles
The Ariel rider/ re builder wrote a very long and detailed blog of the rebuild on Britbike forum
http://www.britbike.com/forums/ubbthreads.php/forums/7/1/ariel-forum
The Ariel suffered a few (mostly simply repaired) problems but got to the finish in one piece  ;D
The main problem encountered was when the Ariel lost compression  (exhaust tappet kept tightening up), The exhaust valve seat in the head was recessing and the guide wore badly  :(
A Norton 16H guide "borrowed" from Team Norton luckily had the correct ID and OD but had a large shouldered section, I turned this down using Team Nortons mini lathe, also polished up the valve for reuse
Another team provided a Neway valve seat cutting kit and the seating got a severe cutting
It really needed a new seat, but needs must
Opinion was that as an oil ring was fitted to the new piston no lubrication was getting to the guide, even though 2 stroke oil was being added to the fuel ????????
I'm not sure I go along with that theory !!

The Norton Team did really well and only one rider dropped some few points
I was delighted to see the 3 flat tank Triumphs did so well (models H, P and N)
The model H had been converted to chain drive using some massive sprockets and a tensioning gadget

The Brough SS100 suffered guide/seat wear the same as the Ariel, and a broken fork

The overall winner rode a HD single  8)

John



14
Japanese Bikes / Re: Mystery clutch?
« on: August 23, 2018, 10:15:54 PM »
Hi,
Clever looking mod  :D
Suzuki GSX (R) 's from the Eighties early ninety's used solid clutch outer drums with that tooth profile
What diameter is the outside of the drum,
I bought a few Suzi clutches on fleabay with the intention of making a replacement clutch similar to the Pearson BSA
so could measure for comparison if you need to

John

15
British Bikes / Re: Villiers engine
« on: August 10, 2018, 12:01:02 PM »
Hi Ken,
Thanks for the lathe photo,
Its a fine looking machine,
I used to have a Woodhouse and Mitchell (Junior 7) but traded that and got a Harrison 165, a bit sorry I did that  :(
I also have a Colchester Triumph 2000 short bed

It looks like the Villiers was cut down to make a power unit to drive some machine or other
That was a very common thing to happen back in time  ::)

John

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