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Search: Posts Made By: pommie john
Forum: Airheads 03-23-2015, 05:21 AM
Replies: 10
Views: 394
Posted By pommie john
There's supposed to be a paper gasket under there.

There's supposed to be a paper gasket under there.
Forum: Airheads 03-17-2015, 12:18 AM
Replies: 9
Views: 416
Posted By pommie john
I had a guy over here make me a pair of cast iron...

I had a guy over here make me a pair of cast iron discs to fit mine. I went for 6mm thickness. They work better than the stainless ones. Not a huge improvement, but noticeable.
Forum: Airheads 03-16-2015, 05:33 PM
Replies: 9
Views: 416
Posted By pommie john
It's called mental versatility :) I...

It's called mental versatility :)


I happen to find metric easy to work with in most things, but clearances are much easier in thou.
Forum: Airheads 03-16-2015, 03:52 AM
Replies: 9
Views: 416
Posted By pommie john
I used Brembo 08s on my race bike with Honda CB...

I used Brembo 08s on my race bike with Honda CB 750 discs. The Honda discs are 7mm thick and I had to take a maybe 10 or 20 thou off the pads each time I fitted new pads.

Used to rub the pads...
Forum: Airheads 03-13-2015, 04:01 AM
Replies: 6
Views: 419
Posted By pommie john
There should be white paint marks on the other...

There should be white paint marks on the other pieces ( the pressure plate and the pressure ring but not the spring) .
They may be hard to see, covered in dirt or whatever. If you can find them ...
Forum: Airheads 03-12-2015, 05:31 AM
Replies: 317
Views: 35,533
Posted By pommie john
IMHO you just want reliability the first time you...

IMHO you just want reliability the first time you head to the salt.
Wish I could come

:)
Forum: Old's Cool 03-04-2015, 08:08 PM
Replies: 73
Views: 3,166
Posted By pommie john
Brake mods are sold by most every Norton...

Brake mods are sold by most every Norton specialist with good reason.

From RGM : R.G.M. MOTORS MASTER CYLINDER RELINE
When criticising the braking performance of the Norton Commando (which...
Forum: Old's Cool 03-03-2015, 07:12 PM
Replies: 73
Views: 3,166
Posted By pommie john
The first thing on my list would be a sleeve kit...

The first thing on my list would be a sleeve kit for the master cylinder.
The stock front brake is downright scary! The common mod is to sleeve the master cylinder down to 12mm so you get a...
Forum: Old's Cool 03-01-2015, 10:15 PM
Replies: 73
Views: 3,166
Posted By pommie john
The most frustrating about Nortons is the...

The most frustrating about Nortons is the plethora of fasteners used. They have UNF, BSF, Whitworth and cycle threads on the one bike. You also need a few specific pullers.... Any old two legged...
Forum: Old's Cool 02-27-2015, 11:50 PM
Replies: 73
Views: 3,166
Posted By pommie john
Nice looking restorations. Nortons can be...

Nice looking restorations.


Nortons can be a bit more... errr... quirky than Jap or Italian bikes. You need to shim the crank and the cam ( sometimes) whereas with most Japanese bikes, they...
Forum: Old's Cool 02-25-2015, 06:43 PM
Replies: 73
Views: 3,166
Posted By pommie john
Everything you need to know is here: ...

Everything you need to know is here:

http://www.accessnorton.com/norton-commando-f1.html



:D
Forum: Airheads 02-23-2015, 09:59 PM
Replies: 5
Views: 360
Posted By pommie john
Run out/ distortion in the disc knocking the...

Run out/ distortion in the disc knocking the pads back?
Forum: Old's Cool 02-20-2015, 05:52 PM
Replies: 2,484
Views: 679,154
Posted By pommie john
It's got a bit of heat shield now and your leg...

It's got a bit of heat shield now and your leg doesn't get that near it. Wouldn't want to crash and get trapped under the left side though. :D
...
Forum: Old's Cool 02-20-2015, 02:07 PM
Replies: 2,484
Views: 679,154
Posted By pommie john
There's a thread on the build here: ...

There's a thread on the build here:

http://www.advrider.com/forums/showthread.php?t=722346

Here's a snap of it , plenty more in the thread.

...
Forum: Old's Cool 02-20-2015, 12:22 AM
Replies: 7,594
Views: 3,556,178
Posted By pommie john
Won't you need some handlebars? :D I...

Won't you need some handlebars? :D

I turned my XL250 into a flat track style road racer. There's tons you can do with them and like you say, get rid of as many parts as possible.

I put a...
Forum: Old's Cool 02-14-2015, 04:43 PM
Replies: 45
Views: 1,840
Posted By pommie john
I had a thought. The slide is raised by a...

I had a thought.

The slide is raised by a rod connected to the bellcrank at the top of the carb.

Maybe the rod is not properly seated in the slide and has raised the slide a little.
Forum: Airheads 02-12-2015, 12:46 PM
Replies: 243
Views: 27,528
Posted By pommie john
What's the frame? It's not a normal airhead...

What's the frame? It's not a normal airhead frame.
Forum: Old's Cool 02-12-2015, 12:32 PM
Replies: 45
Views: 1,840
Posted By pommie john
Advance/retard unit. In the little distributer...

Advance/retard unit. In the little distributer behind the cylinders on a Guzzi. It advances the spark timing as the revs increase. If it's stuck at full advance the RPM won't drop back to idle....
Forum: Old's Cool 02-12-2015, 12:21 PM
Replies: 677
Views: 192,919
Posted By pommie john
I posted this in another thread, but it's worth...

I posted this in another thread, but it's worth repeating here. Roper on his way to TT victory.
( Probably! I can't remember which year I shot this)
...
Forum: Old's Cool 02-10-2015, 11:21 AM
Replies: 72
Views: 6,460
Posted By pommie john
That's some sacrifice you made there. The world...

That's some sacrifice you made there. The world need more people like you.
Forum: Old's Cool 02-10-2015, 02:17 AM
Replies: 72
Views: 6,460
Posted By pommie john
Given that it all ended up on TV I assume that...

Given that it all ended up on TV I assume that the council found out... do you still have a job?

:D
Forum: Old's Cool 02-05-2015, 10:55 AM
Replies: 13
Views: 3,803
Posted By pommie john
Here's one that races locally in Australia.. it's...

Here's one that races locally in Australia.. it's bleedin' noisy :)

http://i5.photobucket.com/albums/y178/pommiejohn/_MG_4828_zpszn7dcswo.jpg...
Forum: Old's Cool 02-05-2015, 10:38 AM
Replies: 7
Views: 768
Posted By pommie john
yeah if the cam is not properly supported by the...

yeah if the cam is not properly supported by the rocker cover/head the oil supply holes could be spraying oil all over the place causing your problem.

My thinking is that if you tighten down the...
Forum: Old's Cool 02-04-2015, 08:42 AM
Replies: 2,484
Views: 679,154
Posted By pommie john
OK, Replacing cracked triple trees.. easy but...

OK, Replacing cracked triple trees.. easy but the offset changed at some point so make sure you get the right ones.

18 x 2.75 is a big front rim the rear is 2.15. I put a 18 x 1.85 rim on mine...
Forum: Old's Cool 02-04-2015, 08:32 AM
Replies: 7
Views: 768
Posted By pommie john
As for the oil leak at the base, torque down the...

As for the oil leak at the base, torque down the four main head nuts first, then tighten the three bolts at the side. I can't remember if they have a torque setting but they are only M6 so they...
Forum: Old's Cool 02-04-2015, 08:27 AM
Replies: 7
Views: 768
Posted By pommie john
First thing: take the rocker cover off and get...

First thing: take the rocker cover off and get rid of the home made gasket...now.

The rocker cover forms half of the camshaft bearing and it has to be a precise fit around the camshaft. Adding a...
Forum: Airheads 01-26-2015, 03:11 AM
Replies: 317
Views: 35,533
Posted By pommie john
I don't see how this could work. If you just...

I don't see how this could work. If you just have a ball and cup joining the two pushrod halves, they could just flex sideways until the hit the inside of the pushrod tube.

The way I have heard...
Forum: Airheads 01-26-2015, 03:05 AM
Replies: 7
Views: 449
Posted By pommie john
i probably just over filled it. I never...

i probably just over filled it.

I never have anything blow out of the breather. That's probably because I have the 25mm sump extension, 25mm longer oil pick up and the oil level 25mm lower.
Forum: Airheads 01-25-2015, 06:41 PM
Replies: 7
Views: 449
Posted By pommie john
No groove. It was a fast track, revving to 8500,...

No groove. It was a fast track, revving to 8500, but that's not unusual. The rings aren't too old. Maybe a leakdown test is a good idea. It's possible that its crankcase pressure.

Edit: I've...
Forum: Airheads 01-25-2015, 06:10 PM
Replies: 7
Views: 449
Posted By pommie john
Definitely the seal. I've cleaned the whole area...

Definitely the seal. I've cleaned the whole area now so I can't photograph it but there's no doubt it was the seal. I installed it dry on a good guide ring.

It seems odd that there's so much...
Forum: Airheads 01-25-2015, 05:53 PM
Replies: 7
Views: 449
Posted By pommie john
Wink Rear Main seal , new Motobins seal or BMW teflon?

Hi Team

After the last race I had a small oil leak from the clutch gearbox area so I pulled the gearbox off and there's a slight leak from the rear main seal. There's also maybe some oil coming...
Forum: Airheads 01-22-2015, 11:23 PM
Replies: 3
Views: 377
Posted By pommie john
For what it's worth I have my shocks mounted with...

For what it's worth I have my shocks mounted with standard M10 x 1.5 bolts. They have a nut on them so it's not like you have to have the fine thread to match a thread on the bike.
Forum: Airheads 01-22-2015, 04:50 PM
Replies: 30
Views: 1,556
Posted By pommie john
They don't actually rotate the other way, but...

They don't actually rotate the other way, but when you blip the throttle, the bike rocks to the left instead of the right due to the Coriolis effect.
Forum: Old's Cool 01-22-2015, 03:07 PM
Replies: 18
Views: 1,318
Posted By pommie john
The Aussie dollar is dropping like a stone...

The Aussie dollar is dropping like a stone against the greenback. You might be OK :D
Forum: Old's Cool 01-21-2015, 09:37 PM
Replies: 18
Views: 1,318
Posted By pommie john
Eh? here's a list of the sizes from that...

Eh?

here's a list of the sizes from that link.


100/90-19 57H TT100GP TL
110/90-18 61H TT100GP TL
130/80-18 66H WT TT100GP
3.00-18 47S TT100GP TL
3.50-18 56H TT100GP TL
Forum: Airheads 01-21-2015, 09:34 PM
Replies: 9
Views: 673
Posted By pommie john
CC used to sell them. I don't know if they had...

CC used to sell them. I don't know if they had any real advantage. From memory ( which isn't always great) the CC roller rockers used to have a higher ratio so you got more valve lift.
Forum: Old's Cool 01-21-2015, 02:52 PM
Replies: 18
Views: 1,318
Posted By pommie john
Dunlop's TT100GP which has the same tread pattern...

Dunlop's TT100GP which has the same tread pattern as the K81 is available in more sizes than the K81 .
You can get a 3.00-18 and a 3.50-18 and several metric sizes too.

It's got a softer...
Forum: Airheads 01-21-2015, 02:06 AM
Replies: 5
Views: 612
Posted By pommie john
if you pull hard enough they'll both be fully...

if you pull hard enough they'll both be fully open .... perfect synch :)
Forum: Airheads 01-19-2015, 07:27 PM
Replies: 317
Views: 35,533
Posted By pommie john
Have you obtained the spousal approval to ride it...

Have you obtained the spousal approval to ride it yet Adrian? :D
Forum: Airheads 01-14-2015, 04:52 AM
Replies: 21
Views: 902
Posted By pommie john
Mine are 40mm with no air filters and a pretty...

Mine are 40mm with no air filters and a pretty hot motor. I doubt if my jetting would be much help. Sorry.
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