On the front lower link of the girder forks, (the one the spring sits on and the mudguard is mounted from), should there be a grease nipple?
If not, how do you get the grease/oil into the bush spindle?
email (option): Gasboy@btinternet.com
It's at the back Pete. Ron
email (option): ronpier@talk21.com
Hi Peter..1/4 cycle...a 1/4 BSF nipple will go in ok...Ian
email (option): ian@wright52.plus.com
Interesting..maybe that is another one I have misidentified, like I did with the speedo studs for a number of years..
. Saying that BA threads are usually on instruments and electrical components in motorcycle applications..With 0BA having an OD of .236" and a pitch of 25.4 TPI and 1/4" BSF having an OD of .250 and a pitch of 26 TPI these two are easily confused (as previous threads have shown)..Clarification required again...
...Ian
email (option): ian@wright52.plus.com
Where on earth would you buy 0BA grease nipples. I can only find BSP BSF UNF and metric at the vintage suppliers Ron
email (option): ronpier@talk21.com
Some post war BSAs used 2 BA grease nipples..Bantam, C15, B40. No reference to O BA so far, though earlier publications don't mention anything about grease nipple threads..including the military Inspection Standards book for the M20...I'm pretty sure wartime and early post war models used BSF as they fit without any problems despite being .014" bigger on the OD than 0BA...Pre war?..no idea at present apart from Kevins observations..Another question for Leon perhaps as he is into bikes of that period.Ian
email (option): ian@wright52.plus.com
I'm not keen on the 'central nipple' idea for lubricating the bushes. In my experience if bush wear is uneven (or bush to link clearance when fitted) the grease will take the easiest path through the bush with the greatest clearance at the expense of the other one.
This has happened on my M20 in the period since the last time the forks were overhauled...One link pin is rusty and the bush dry, the other oozes grease when lubricated.
I plan to fit a nipple for each bush to get guaranteed, direct lubrication when I rebuild the bike in the Autumn...Ian
email (option): ian@wright52.plus.com
I'm not keen on the 'central nipple' idea for lubricating the bushes. In my experience if bush wear is uneven (or bush to link clearance when fitted) the grease will take the easiest path through the bush with the greatest clearance at the expense of the other one.
This has happened on my M20 in the period since the last time the forks were overhauled...One link pin is rusty and the bush dry, the other oozes grease when lubricated.
I plan to fit a nipple for each bush to get guaranteed, direct lubrication when I rebuild the bike in the Autumn...Ian
email (option): ian@wright52.plus.com
Standardised across the industry, no less !
I just bought some nice stainless ones for my upcoming rebuild...Lovely, lovely stainless..OOOH....Ian
email (option): ian@wright52.plus.com
With the correct form, Ian ? I know some don't like these older style nipples with a view to lubrication but I find that my 'Blue-Point' high-pressure gun goes onto the nipples quite successfully. In fact, the biggest problem is not forcing it through the side damper discs.
Hi Chris..Barleycorn Engineering...but not cheap at £2.00 each. There are probably cheaper sources if you look on 'tinternet...Ian
email (option): ian@wright52.plus.com
While we're on the subject the lubrication chart in the back of the riders handbook states oil, not grease for lubrication of the girders...Ian
email (option): ian@wright52.plus.com