Messages

1

General Discussion / Re: Who's smarter

« on: November 21, 2020, 12:16:52 am »

Hello

Have I got the right room for the Association of Post-Menopausal Spinsters Who Don't Like Any Fcuking Thing Annual Piss and Moan Conference?

Thought I'd never find you!
 

2

Competition / Air striker pwk for pre 85?

« on: November 13, 2020, 08:19:34 pm »

I think a pwk carb is now legal in the pre 85 class. Is the air striker version legal? A lot of the chinese knockoffs seem to be air strikers. Thanks.

3

For Sale / Re: Two Maico 490's

« on: June 24, 2020, 09:05:10 am »

If you decide if the bikes are actually for sale and what the price is, be sure to let us know.

4

Tech Talk / Re: CR250M fork springs

« on: May 14, 2020, 11:14:13 am »

Not what you asked but have you had a look at the racetech spring calculator? Put in the brand/model/year and it will bring up a page that lets you use the calculator.

https://racetech.com/ChooseVehicle.aspx

5

General Discussion / Re: fork emulators

« on: May 12, 2020, 12:12:41 pm »

I have them in a couple of my pre '75 bikes (not CRs). I found the recommended settings to be a good starting point and just tweaked them at home between rides. The right spring rate/preload/oil level are basic requirements for a good result too so you do end up with a lot of variables you can (must?) juggle to get a result. Make sure to measure the actual fork travel available when you have the springs out and put a zip tie on the fork tube so you can see how much you use on track.

One of these grabber tools from super cheap is a good idea. As well as making it easy to get the valve out its good for assembly. If the valve goes in crooked they can be damaged. Thread the tool thru the spring, grab the valve and insert the whole lot into the fork as an assembly. They make one with an led in the claw end too.

https://www.supercheapauto.com.au/p/sca-sca-pick-up-tool-claw-spring/293796.html#q=claw&lang=en_AU&start=1

6

Competition / Re: 2020 Classic Nats

« on: May 10, 2020, 12:05:48 pm »

I'm still quite keen but reality might not care. There's so much uncertainty about so many things I wouldn't like to bet on my chances of getting there from WA.

7

Competition / Re: 2020 Classic Nats

« on: May 09, 2020, 01:52:54 pm »

Only what Mick Hughes put on FB.
Not on this date, maybe later in year

Cheers Ted, I've been staying off facetoilet. My tinfoil hats last three times as long now.

8

Competition / Re: 2020 Classic Nats

« on: May 09, 2020, 08:23:37 am »

Yeah well this event has been postponed.

Any details Ted?

9

Competition / Re: 2020 Classic Nats

« on: December 29, 2019, 12:09:50 pm »

My 2c opinion re the pre '75 class... go for the simplest option: As a starting point anything that is as per the original manufacturer spec is legal. That way all unmodified bikes are legal, nothing for the happy vintage racer to do in order to compete.

If there is concern about competition across brands perhaps allow competitors so inclined to modify their machine to match a nominated spec. For example a '73 maico (or whatever) could be altered to '74 specs (or whatever).

Those two basic ideas allow both easy access to the class and room for the tinkerers to tinker. You know, same as it was back in the day.  :-)

10

Honda / Re: 1984 CR500 rear hub

« on: September 26, 2019, 05:19:47 pm »

FWIW the 125 hub does fit in a 500 but it's not the same. The offset is different, I had to make new spacers to get the chain to line up.

11

Tech Talk / Re: Keihin PWK38/40 slide cutaway measurements

« on: May 28, 2019, 09:28:27 am »

Where are you getting your slides from John?

FWIW I have a genuine pwk on my '84. I put it on to make it a little easier to start and was surprised at the extra grunt. Big difference.

12

General Discussion / Re: What rear shock spring rate needed for 4" travel? Any for sale or swap?

« on: April 14, 2019, 09:39:13 am »

With the amount of preload you'll need to set the ride height with a 90kg rider my guess is those dual rate/progressive ohlins springs (horrible things imo) will be basically running as 82lb springs, but with tons of preload. I'm 75kg and set of straight rate 80lb springs feels pretty good to me on a '74 husky. :-)

13

Tech Talk / Re: Help/ideas needed to get my stupid brain working. EDIT: It's running!

« on: February 17, 2019, 12:40:28 pm »

Nice one John :-)

Personally I don't trust replacement ignitions as far as I can throw them, and not just pvl. As far as I'm concerned putting a timing light on them is an essential part of the installation process. Getting it started is one thing, the next is checking the damn thing is doing what you want it to. Sometimes the timing marks seem to be completely random. :-)

14

Tech Talk / Re: Help/ideas needed to get my stupid brain working.

« on: February 16, 2019, 07:09:13 pm »

Well I'll take a punt. :-)

I haven't used that aerostart stuff but I'm assuming that if there's a spark at the right time then it's at least going to make a pop?? So there's either no spark or its sparking at the wrong time (eg 180 degrees out).

If you take the plug out, put a timing light on it and spin the engine with an electric drill you should be able to see when its firing. If that's correct it only leaves no spark under pressure.

There are those cheap ignition testers on ebay that let you set/adjust a very large gap, to simulate ignition under pressure, but I haven't tried one.

15

General Discussion / Re: Workshop floor paint?

« on: February 03, 2019, 10:13:24 am »

Non slip is good. Some of those paints are diabolically slippery when wet, especially if you have smooth finish concrete. Both my old dogs hurt their hips slipping on a painted floor, even with grit in the paint.