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Messages - cbxman

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1
Misc / Open / Re: Casting rubber parts
« on: March 01, 2024, 10:48:00 AM »
Thanks Ash.

Noted.

2
Misc / Open / Re: Casting rubber parts
« on: March 01, 2024, 09:17:45 AM »
Well done.

I was given a 3D printer last year for my 70th.  Still experimenting and made many of the downloadable parts from Thingiverse.  Now started using "Blender" a free 3D design software.  Very good but steep learning curve with a good community and help files.  I have managed to make a range of cylindrical volume knobs in PLA...no good for strength though, so now trying PETG.  I was given a reel of TPU which is soft and might be good for things like side cover grommets.  I am still playing around at the moment.

Is there a way we could build a list of .STL files for bike specific parts?

Grandad...can you make me one of those snakes pleeeeese?

Doh!

Jerry


3
Tricks & Tips / Re: Threading switch gear cable through handlebars
« on: January 02, 2024, 06:07:29 PM »
My two pence worth.

I use a hair dryer to warm the handlebar and the PVC becomes softer and manageable, particularly in this weather!  The wires just pushes through quite easily even old brittle stuff.  Not too much though!!!!

4
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 10, 2023, 10:12:45 AM »
Ken,

Are you willing to part with it?  If so please pm me.

Cheers,

Jerry

5
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 08, 2023, 07:54:14 PM »
Ken,

Thank you for the links.  I was getting excited until I saw the shipping from Japan...Ha Ha!

If you spot another one please let me know.

Cheers,

Jerry

6
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 08, 2023, 04:31:46 PM »
My CB1300 has 2 ball bearings on the O/S but a long needle roller on the N/S, possibly because it will withstand the pull of the drive chain better.. Oddly enough it's not the bearing that starts to fail but the tophat bush that runs inside the needle roller. Due to lack of assembly grease no doubt, mine got an advisory on it's first MOT for swinging arm play.

Ken,

Thanks for the heads-up.  My CB1300 A5 has only done 20k but I'll check the S/A when I have it up on the Abba Stand (no centre stand on mine wtf!)

I guess the CBX was one of the first bikes to exceed 100hp, so I guess they figured it needed to be beefed up.  the 1300 is real grunt bucket, where's my grease gun!

Cheers,

Jerry

7
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 08, 2023, 09:33:34 AM »
Yes it would if it needed one, especially if i was doing it!  Any play is too much as far as im concered.
I did say that the pin would need drilling for 450/500 bolt.
I dont like needle rollers in that situation as the angle movement is not a lot so needles dont actualy roll, same with taper roller headstock bearings, they indent just as bad as the balls but are easier to assemble

Bryan,
The angular movement of the S/A is small...just a few degrees, so I sort of agree with you.  However it is common practice from I have seem for more modern bikes.

The CBX1000 Z (1978/79) model has plastic bushes and they were replaced by a large needle bearing on the chain side and opposed biased ball bearings on the right hand side to locate the S/A this development is proudly boasted in the "A" 1980 brochure.  The idea being that the wide/long needles could bear the load better than a ball bearing with point contacts carrying the thrust.

It seems it is common practice now.

The is the drawing from the 1980 CBX brochure

8
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 07, 2023, 06:19:32 PM »
Ken,

Thank you for comments.  The end bearings turn really smoothly and I wondered how on earth they could put needles in anything that thin.  I thought it may be ring of PTFE.

The grease was definitely coming out from the edge of the bearing and also some squeezing past the collar where it passes through the end bearing, which is good - where there is grease--no water.  A copper washer each end would increase the overall dimension and probably not allowed the S/A to fit the frame.  Nice idea though.

 I'm pleased how it turned out, but the total lack of instructions was rather unnerving.  Still maybe this thread can help someone else.

The original collar is shot with deep corrosion pits.  It could be turned down and a sleeves fitted, or bespoke brass bush maybe.

I had an old Mini Metro drive shaft which I thought I could turn down to duplicate the OE collar.  Hard work for my 1946 Milford ML7 lathe!!

The PO, or the restorer he used, probably thought he could get away with re-using it.

It is a safety component.  It would have failed an MOT.

Cheers,

Jerry

9
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 07, 2023, 10:55:13 AM »
Hi Folks,

Just to finish this thread.....

The OE swing arm collar is not available in the UK, so I would bite the bullet and install the Tourmax Upgrade kit.

Given that this kit has no obvious weather seals, (the OE seals are discarded) I decided to drill the S/A in the centre nearest the lower pressing weld line.  I tapped the hole to M6-1 and screwed in a 90º grease nipple.  With two aluminium washers, I could tighten the nipple to point where it was easy to connect my grease gun (slight to the r/h side of the tyre from underneath)

Whilst the S/A was still on the bench, I pumped CVJ Moly grease through the nipple until it squished out of the two needle bearings.  I then added the two end bearings and installed the S/S in the frame torqued down to the FSM value.  I then pumped more grease in until it came though the end bearings. I figured that CVJ grease is very sticky and water resistant and very strong under compression and ideal for this job.

The finished job is excellent.  The S/A has no slop and swings up/down with no effort at all.

If I ever get caught in the rain, then a pump of grease will expel any moisture, if any at all. CVJ grease is never likely wear out...especially when you consider its intended use.

Things to note.  If you assemble the needle bearings on the shaft, you can feel a small bit of slop which was a little worrying, but whilst I was researching needle bearings, I discovered that they will always be slightly sloppy because they must be installed in the correct size tube which forces them down to the operational size.  This is so.  No measurable side play at all at the wheel end of the S/A.

This Upgrade Kit is suitable for the CB450K, CB350F and CB250G5/6, CB500T as well the CJ variants (according to their website).  I ordered from motorcycleproducts.co.uk

10
Desperately Seeking!! / Re: CB360-350F-450K Swing Arm Collar Wanted
« on: December 03, 2023, 09:50:16 AM »
James,

That's fine.  No problem.

Cheers,

Jerry

11
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 02, 2023, 12:12:14 PM »
Before I fly home tomorrow can you measure the oe collar and the Tourmax version and post the lengths please

Hello Ken,

As requested.

The overall length of both assemblies is similar.  The Tourmax being about 1mm shorter. I guess the frame will flex to cover that when the through-bolt is tightened.  The rebated section passes through the end bearing to contact the frame.

Cheers,

Jerry

12
Desperately Seeking!! / Re: CB360-350F-450K Swing Arm Collar Wanted
« on: December 02, 2023, 09:09:18 AM »
Pretty sure I have a NOS CB400F collar that I paid an arm and a leg for a few years back. I'll have a dig around and see if I can find it!

James,

Thank you for having a look for it.

Cheers,

Jerry

13
Desperately Seeking!! / Re: CB360-350F-450K Swing Arm Collar Wanted
« on: December 02, 2023, 09:07:29 AM »
Just sitting here hoping to get fed shortly:
333 is the CB350 Four part and according to CMS 52141-333-000 also fits some CB400 fours.

But notice that some CB400 fours call up 52141-369-000.
The 333 version shows holes for grease to come through, the 369 does not show the holes as probably doesn't need them as the grease is fed from S/A nipple.
Maybe otherwise the same.

Hi.  The 333 is listed in my CB360 parts list although I have seen other references to the 369 part too.

My CB360 swing arm does not have nipple, or like the 450/750, a nipple on the end of the through bolt.  I have a post running on the Twins Forum about this and the Tourmax replacement kit.

I hope you enjoyed your meal!

Cheers,

Jerry

14
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 01, 2023, 06:28:58 PM »
450 bolt will not work before you try to find one, I’ll explain better when I’m back in the uk on Sunday

Thanks Ken.  On hold 'till you get back.

Thinking about it....I was wondering whether fitting a grease nipple is likely to be needed as my bikes don't go out in the rain unless I get caught out, so I don't expect to be putting those bearings under any threat.  When the salt goes down, the bikes go to bed until the spring.... I'm a bit of wimp !!.  I did all my crap weather riding back in the '70s

Cheers,

Jerry

15
SOHC Singles & Twins / Re: CB360 Swing Arm Collar Problem
« on: December 01, 2023, 04:24:46 PM »


Wow!.  Thank you for the quick responses. OK, so the end bearings which are very smooth operating are in themselves resistant to water ingress?  Are they some sort of PTFE sandwich? The IKO needle bearings and the end thrust bearings look like they are made from Stainless Steel

The CB360 does not have a grease nipple so that would require a complete dismantling of the rear end every time greasing is required.  It's is little wonder that they were common failure point.

Maybe I can fit a grease nipple in the middle somehow.  The two halves of the swing arm pressings wrap around and welded to the tube that makes up the pivot, so I would have to drill on the front side.  I have checked and there is not enough space between the tube and the back of the motor to get a grease gun on.  I would have to drill through the pressing and tube near where they are welded together.  That would place it underneath and more accessible.

Will the end bearings allow grease through I wonder.

I was going to use CVJ moly grease as I have a tub of that.  It is supposed to be resistant to water, so that should help.

Any further comments are welcomed.

Cheers,

Jerry

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