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Re: Main bearing replacement issues
Posted: Wed Apr 06, 2011 12:13 pm
by Chuey
R90Steve wrote:Chuey wrote:I'm not familiar with 5x.9 metric bolts. The ones I've seen are 5x.8. Is there really a .9 or is that a typo?
Chuey
There really is a 5X.9.
That is just a sick joke to play on mechanics. At least now I know. Who thought of making two thread pitches with the difference being just one tenth of a millimeter?
Chuey
Re: Main bearing replacement issues
Posted: Wed Apr 06, 2011 11:35 pm
by R90Steve
Chuey wrote:R90Steve wrote:Chuey wrote:I'm not familiar with 5x.9 metric bolts. The ones I've seen are 5x.8. Is there really a .9 or is that a typo?
Chuey
There really is a 5X.9.
That is just a sick joke to play on mechanics. At least now I know. Who thought of making two thread pitches with the difference being just one tenth of a millimeter?
Chuey
If you think that is sick, if you work on a late 60s British bike, you can find CEI, BSW, BSF, BSP, USS and SAE threads, on the same bike.
No metric though.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 3:08 am
by Major Softie
R90Steve wrote:
If you think that is sick, if you work on a late 60s British bike, you can find CEI, BSW, BSF, BSP, USS and SAE threads, on the same bike.
No metric though.
Well, at least they didn't mix NPT and BSP.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 3:39 am
by ME 109
You guys are nuts.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 3:48 am
by ME 109
Hey Hools, how goes the job? Have yer staked that bearing yet?
They float on fluid those cranks ya know, except for the three points of 'close encounters' of the crank and bearing'
I think so anyway....
I could be wrong.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 8:31 pm
by Major Softie
ME 109 wrote:You guys are nuts.
Not me! As far as I know, there are no pipe thread nuts.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 8:38 pm
by robtg
Major Softie wrote:ME 109 wrote:You guys are nuts.
Not me! As far as I know, there are no pipe thread nuts.
BSPP ---- British standard parallel pipe threads used on petcocks and bulkhead fittings use nuts.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 9:08 pm
by R90Steve
robtg wrote:
BSPP ---- British standard parallel pipe threads used on petcocks and bulkhead fittings use nuts.
I did not know those were BPP.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 9:31 pm
by robtg
R90Steve wrote:robtg wrote:
BSPP ---- British standard parallel pipe threads used on petcocks and bulkhead fittings use nuts.
I did not know those were BPP.
1/4 bsp x 19 threads come in tapered and parallel. I was given 2 petcocks from a Matchless Mattisse for an aluminum
fuel tank i built and my thread gages didn't have 19 tpi. Had to do some research on that.
.
Re: Main bearing replacement issues
Posted: Thu Apr 07, 2011 10:30 pm
by hools100RS
G'day Jeff. No I haven't staked the bearing yet!!!! I've been working out an alternative to staking and or screwing in the 'stake' and I reckon I'm on a winner!!!!! I'm going to mill up a 4mm stake with a square end on it that will locate (with a little judicious filing!!) in the nearly square hole that was left after the original stake was punched out. With the top of this device just beneath the surface of the bearing carrier, I should be able to restake and secure it. Whew!! Apart from this litle hiccup and getting two new small end bushes fitted to conrods and honed, everything is set to reassemble over the next couple of weeks. I'm hanging out to take him for a good squirt!!! Cheers, Mark!!!