1
CZ / Re: CZ 1973 front forks set up
« on: December 01, 2024, 12:17:06 pm »
Thanks Tony. will use the mm measurement in the near future.
Pete
Pete
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2
CZ / CZ 1973 front forks set up
« on: October 04, 2024, 06:51:34 am »
Just making a record of my attempts to improve the soft front end on my 73 380.
Forks appear standard except for the addition of `top hats' at the end of the springs. The top hats where an upgrade from back in the day apparently.
30 weight oil. 170 ml per leg. And 10mm spacer at the top of the spring, under the cap.
Feels much better in the garage tests.
Pete
Forks appear standard except for the addition of `top hats' at the end of the springs. The top hats where an upgrade from back in the day apparently.
30 weight oil. 170 ml per leg. And 10mm spacer at the top of the spring, under the cap.
Feels much better in the garage tests.
Pete
3
For Sale / Husqvarna chain sliders / defense 1981 to 1984
« on: July 05, 2024, 08:27:51 am »
Hi Guys,
We have been able to remanufacture chain sliders for the swingarm. Made from Australian industrial quality polyurethane. Super Tuff. The template has been taken from an original OEM part. I have put details and photos up on the facebook sites like OZVMX and Hunter Classics so you can see the material and fit up on my 430 CR.
$40.00 AUD plus post from Wollongong NSW Australia.
email is [email protected]
We have been able to remanufacture chain sliders for the swingarm. Made from Australian industrial quality polyurethane. Super Tuff. The template has been taken from an original OEM part. I have put details and photos up on the facebook sites like OZVMX and Hunter Classics so you can see the material and fit up on my 430 CR.
$40.00 AUD plus post from Wollongong NSW Australia.
email is [email protected]
4
Husqvarna / Re: Husqvarna chain sliders / defense 1981 to 1984
« on: July 05, 2024, 08:25:54 am »
Pete,
Thanks. I have sent quite a few out all ready. I hope to be going to CD so should bring some there too.
Managed to get an original OEM sliced for the 1986 style single shock Huskies for Sweden just now, will be making them if there is any interested.
Pete
Thanks. I have sent quite a few out all ready. I hope to be going to CD so should bring some there too.
Managed to get an original OEM sliced for the 1986 style single shock Huskies for Sweden just now, will be making them if there is any interested.
Pete
5
Husqvarna / Husqvarna chain sliders / defense 1981 to 1984
« on: June 26, 2024, 07:39:37 am »
Hi Guys,
We have been able to remanufacture chain sliders for the swingarm. Made from Australian industrial quality polyurethane. The template has been taken from an original OEM part. I have put details and photos up on the facebook sites like OZVMX and Hunter Classics so you can see the material and fit up on my 430 CR.
$40.00 AUD plus post from Wollongong NSW Australia.
email is [email protected]
We have been able to remanufacture chain sliders for the swingarm. Made from Australian industrial quality polyurethane. The template has been taken from an original OEM part. I have put details and photos up on the facebook sites like OZVMX and Hunter Classics so you can see the material and fit up on my 430 CR.
$40.00 AUD plus post from Wollongong NSW Australia.
email is [email protected]
6
CZ / Re: 981 Clutch oil seals and tank colour and JETS
« on: May 08, 2024, 03:42:46 pm »
cheers Pete
7
CZ / Re: 1973 PARTS BOOK
« on: March 19, 2024, 06:59:19 pm »
I have made a copy from the 1974 original parts book - if you would like let me know - i tried putting it here but it wouldn't stick. Kind regards Pete
8
CZ / Re: 981 Clutch oil seals and tank colour and JETS
« on: March 19, 2024, 06:53:17 pm »
Improved again.
50 pilot and 300 main and then raised the needle one step by dropping the clip one grove down from the middle groove....
Cheers
Pete
50 pilot and 300 main and then raised the needle one step by dropping the clip one grove down from the middle groove....
Cheers
Pete
9
CZ / Re: 981 Clutch oil seals and tank colour and JETS
« on: January 27, 2024, 01:35:12 pm »
27..01.24 jetting changed which improved it a lot.
Original 25 pilot changed to the 37.5 and now a 45. Great improvement.
After that it was still prone to increased revs by itself just above quarter throttle.
So left the Q5 in and replaced the 6F5 needle with a 6FJ6 (both middle clip) No more self over rev.
Ridden around street, hot, but will need to get a track day to maybe increase the Main from the 280. See how we go.
Cheers
Pete
Original 25 pilot changed to the 37.5 and now a 45. Great improvement.
After that it was still prone to increased revs by itself just above quarter throttle.
So left the Q5 in and replaced the 6F5 needle with a 6FJ6 (both middle clip) No more self over rev.
Ridden around street, hot, but will need to get a track day to maybe increase the Main from the 280. See how we go.
Cheers
Pete
10
CZ / Re: 981 Clutch oil seals and tank colour
« on: January 21, 2024, 02:23:44 pm »
JET SPECS TAKEN FROM SPREADSHEET PROVIDED IN THIS THREAD
CZ 125 MX -72 VM 32 200 35 Q6 5FJ9 - 3.0
CZ 250 MX -66 VM 32 240 35 Q6 6FJ6 - 3.0
CZ 250 MX -66 VM 34 230 35 Q8 6FJ6 - 3.0
CZ 250 MX -71 VM 34 210 35 Q5 6DP5 -
CZ 250 MX -72 VM 34 240 40 Q8 6FJ6 - 3.0
CZ 250 MX VM 34 210 35 Q5 6DP5 -
CZ 250 MX VM 36 260 35 Q5 6FJ6 - 1.5
CZ 250-380 MX VM 34 300 40 Q6 6FJ6 - 2.5
CZ 250-380 MX VM 34 310 45 P8 6DH3 -
CZ 360 MX -67 VM 34 250 35 Q6 6DP5 -
CZ 360 MX -67 VM 34 230 45 Q6 6F5 - 2.
CZ 360 MX -67 VM 34 240 40 Q8 6FJ6 - 2.5
CZ 380 MX TM 36 290 45 Q6 6FP17 -
CZ 400 MX VM 34 230 30 Q5 6DP5 -
CZ 400 MX VM 36 280 25 Q5 6FJ6 - 2.5
CZ 380 MX VM 36 350 45 Q8 6FJ6 - 1.5
CZ 380 MX VM 34 320 45 P8 6DH3 -
CZ 380 MX -66 VM 34 260 35 P0 6DH3 - 2.5
CZ 380 MX -69 VM 34 320 45 P8 6DH3 - 2.5 O. Persson
CZ 380 MX -71 VM 34 230 30 Q5 6DP5 - 2.0 AMS Racing USA
CZ 380 MX -72 VM 36 290 45 Q5 6FJ6 - 2.0 R.L Dengler
CZ 380 MX -72 VM 36 270 45 Q6 6DH2 3.5 Pete Maly specs
CZ 380 MX Reed Valve VM 36 430 45 Q8 6DH3 - 2.5 C.M.
CZ 125 MX -72 VM 32 200 35 Q6 5FJ9 - 3.0
CZ 250 MX -66 VM 32 240 35 Q6 6FJ6 - 3.0
CZ 250 MX -66 VM 34 230 35 Q8 6FJ6 - 3.0
CZ 250 MX -71 VM 34 210 35 Q5 6DP5 -
CZ 250 MX -72 VM 34 240 40 Q8 6FJ6 - 3.0
CZ 250 MX VM 34 210 35 Q5 6DP5 -
CZ 250 MX VM 36 260 35 Q5 6FJ6 - 1.5
CZ 250-380 MX VM 34 300 40 Q6 6FJ6 - 2.5
CZ 250-380 MX VM 34 310 45 P8 6DH3 -
CZ 360 MX -67 VM 34 250 35 Q6 6DP5 -
CZ 360 MX -67 VM 34 230 45 Q6 6F5 - 2.
CZ 360 MX -67 VM 34 240 40 Q8 6FJ6 - 2.5
CZ 380 MX TM 36 290 45 Q6 6FP17 -
CZ 400 MX VM 34 230 30 Q5 6DP5 -
CZ 400 MX VM 36 280 25 Q5 6FJ6 - 2.5
CZ 380 MX VM 36 350 45 Q8 6FJ6 - 1.5
CZ 380 MX VM 34 320 45 P8 6DH3 -
CZ 380 MX -66 VM 34 260 35 P0 6DH3 - 2.5
CZ 380 MX -69 VM 34 320 45 P8 6DH3 - 2.5 O. Persson
CZ 380 MX -71 VM 34 230 30 Q5 6DP5 - 2.0 AMS Racing USA
CZ 380 MX -72 VM 36 290 45 Q5 6FJ6 - 2.0 R.L Dengler
CZ 380 MX -72 VM 36 270 45 Q6 6DH2 3.5 Pete Maly specs
CZ 380 MX Reed Valve VM 36 430 45 Q8 6DH3 - 2.5 C.M.
11
CZ / Re: 981 Clutch oil seals and tank colour
« on: January 21, 2024, 02:05:13 pm »
Hi Tony, Just back from overseas and see your last post about checking the jetting in your bike.
I noted you were using a 45 Pilot. Mine improved a lot from the 25 pilot in it to the 37.5 (which I had at home). Just about to order a bunch of extra pilots and a few mains from Hadrick now.
I also got hold of an original 1974 owners parts list from Adrian's dad. I have made a PDF copy and a paper copy. Let me know if you could use the PDF.
Kind regards
Pete
I noted you were using a 45 Pilot. Mine improved a lot from the 25 pilot in it to the 37.5 (which I had at home). Just about to order a bunch of extra pilots and a few mains from Hadrick now.
I also got hold of an original 1974 owners parts list from Adrian's dad. I have made a PDF copy and a paper copy. Let me know if you could use the PDF.
Kind regards
Pete
12
CZ / Re: 981 Clutch oil seals and tank colour
« on: December 13, 2023, 04:38:04 pm »
Hi ya Tony,
Now the clutch seems fixed I got it hot and found the jetting was a little lean.
Not sure if you have a favoured mix of jets - looks like a newish 36mm Mikuni
I just took it apart again so I'll document what is in it.
Main 280
Nozzle Jet 159 Q 5
Needle 6F5
Clip was in the middle - as of yesterday dropped the clip one down - richer and it went a lot better
Pilot - 25
Slide 2.5
Air Screw was at 1 and Half
Im going to do some searching now.
For future reference the Clutch Seals and Bearings are as follows
The 2 needle bearing inside the clutch are K 25 x 30 x 13 ( C3's )
Item 26 is an ORing 43 x 35 mm
Item 8 is an ORing 26mm ID and 2mm diameter/thick
The Kickstarter seal is an ORing 24 x 20mm
And the main seal that goes in the clutch cover is 50 x 65 x 8 double lip with a spring - I used the normal black one because the Viton was only single lip I could get and wouldn't have worked.
Cheers Pete
Now the clutch seems fixed I got it hot and found the jetting was a little lean.
Not sure if you have a favoured mix of jets - looks like a newish 36mm Mikuni
I just took it apart again so I'll document what is in it.
Main 280
Nozzle Jet 159 Q 5
Needle 6F5
Clip was in the middle - as of yesterday dropped the clip one down - richer and it went a lot better
Pilot - 25
Slide 2.5
Air Screw was at 1 and Half
Im going to do some searching now.
For future reference the Clutch Seals and Bearings are as follows
The 2 needle bearing inside the clutch are K 25 x 30 x 13 ( C3's )
Item 26 is an ORing 43 x 35 mm
Item 8 is an ORing 26mm ID and 2mm diameter/thick
The Kickstarter seal is an ORing 24 x 20mm
And the main seal that goes in the clutch cover is 50 x 65 x 8 double lip with a spring - I used the normal black one because the Viton was only single lip I could get and wouldn't have worked.
Cheers Pete
13
CZ / Re: 981 Clutch oil seals and tank colour
« on: December 07, 2023, 08:56:46 am »
Thanks so much Tony. Got a couple of them yesterday and the rest on order.
Had another win yesterday. Got hold of an original 1974 parts book. Will do electronic copy soon for who ever needs it. Super helpfull book
Cheers
Pete
Had another win yesterday. Got hold of an original 1974 parts book. Will do electronic copy soon for who ever needs it. Super helpfull book
Cheers
Pete
14
CZ / Re: 981 Clutch oil seals and tank colour
« on: December 05, 2023, 07:35:57 am »
Thanks Tony. You are a champion.
Much appreciated.
I am in touch with my local bearing supplier and will change it to Viton etc.
Might look at that mod as well.
Kind regards
Pete
Much appreciated.
I am in touch with my local bearing supplier and will change it to Viton etc.
Might look at that mod as well.
Kind regards
Pete
15
CZ / 981 Clutch oil seals and tank colour and JETS
« on: December 01, 2023, 10:39:58 am »
Hi Gents,
Had the 1973 380 going with new Vape Ignition. Brilliant.
New issue is oil leak behind the dry clutch.
Question - what are the sizes and or id numbers for the seal (and type maybe) and oring/s
? Possible 50 x 65 x 8 mm but not sure if single or double lip, or spring etc if it matters.
Question - size of the Oring on the kick starter shaft ?
Question - I want to paint a steel tank in the original '73 Blue colour. Any idea what the colour code is or close to it?
Many thanks once again
Pete
Had the 1973 380 going with new Vape Ignition. Brilliant.
New issue is oil leak behind the dry clutch.
Question - what are the sizes and or id numbers for the seal (and type maybe) and oring/s
? Possible 50 x 65 x 8 mm but not sure if single or double lip, or spring etc if it matters.Question - size of the Oring on the kick starter shaft ?
Question - I want to paint a steel tank in the original '73 Blue colour. Any idea what the colour code is or close to it?
Many thanks once again
Pete