Author Topic: Speaking of vibration  (Read 13758 times)

Offline trevinoz

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Re: Speaking of vibration
« Reply #45 on: 22.09. 2010 21:55 »
Dave,
         You can get the drive side main roller locally.
NF 206 from memory.
Trev.

Offline Hubie

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Re: Speaking of vibration
« Reply #46 on: 22.09. 2010 22:46 »
Thanks Trev,

Eastern Bearings aren't far from me (Ferntree Gully) and I'd bed they'd have it.  I took my clutch centre and sliding plate into them and they had a sealed bearnig to suit that I was able to fit straight into the sliding plate without fuss.  I had a 5mm gap between the back of the clutch centre and the inside diamter of the sliding plate hole.

Cheers,

Dave.
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Offline Hubie

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Re: Speaking of vibration
« Reply #47 on: 25.10. 2010 09:28 »
I finally have all the parts I need after five missing pieces from a shipment and I have a new camshaft as well.  Now the engineer who is doing my crank is away for the next week and a half!  At least the end is now within reach!  Can't wait to put it back together.

Cheers

Dave.
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Offline Retired Fireman

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Re: Speaking of vibration
« Reply #48 on: 25.10. 2010 09:45 »
Hubie don't forget to order your  roller in C3 clearence, your bearing should read NF 206 C3. The C3 is the extra clearence you need because you are holding the outer race of the bearing in your case by interference fit (crushing it) a standard clearence (NF206) will run too tight when fitted, the C3 has extra clearence built into the bearing. *smile*

Offline Hubie

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Re: Speaking of vibration
« Reply #49 on: 01.11. 2010 05:16 »
Well all the bits went off to the engineer today so he should receive them in two days and the crank can finally be done.  Then it's re assembly time.  Looks like it'll get done within the next two to three weeks (finally)  *smile*
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Online muskrat

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Re: Speaking of vibration
« Reply #50 on: 01.11. 2010 07:53 »
Wise words from RF.
Don't rush it. Has the bearing a steel or plastic cage? I just found a piece of plastic in my sump, looks like part of a cage!!!!!
Now all I have to do is heed my own advice !
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
Muskys Plunger A7

Offline Hubie

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Re: Speaking of vibration
« Reply #51 on: 01.11. 2010 22:30 »
Tis a steel bearing musky, will need to heat the cases to fit it in.  Also pulled the heads of my RE super meteor last night to investigate low compression.  One cylinder had a stuck second ring and the ring land broke extracting it.  Looks like new pistons and rings and a +20 rebore for that bike!!
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Offline Hubie

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Re: Speaking of vibration
« Reply #52 on: 26.11. 2010 01:44 »
Ok.   My crank is ready to be picked up so I've been going over the manual so I don't stuff anything up when I reassemble the motor.  I noticed in the manual that there is a shim between the drive side crank journal and main bearing but there was not one there when I pulled the motor apart.  I do have four shims which were behind the drive side sprocket which I assume was there to eliminate end float.  Anyone have thoughts on this?

Cheers,

Dave.
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

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Re: Speaking of vibration
« Reply #53 on: 26.11. 2010 07:42 »
G'day Mate,
                    thats how you adjust the end float of the crank. Before you put the rods on assemble the crank & cases. Set up a dial gauge on the crank and measure the end float, ( push or tap crank to one side then the other side to get measurement) subtract 2 thou" and thats how much shim you need behind the bearing on the crank. Careful taking the inner bearing back off to do so. I use a wrap around bearing puller set up ready then pour boiling water over bearing to get it off. Other methods on the forum. Try searching end float.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
Muskys Plunger A7

Offline Hubie

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Re: Speaking of vibration
« Reply #54 on: 26.11. 2010 08:03 »
Thanks Musky,

I'd imagine that nothing has changed since I pulled the motor apart but I will measure it to make sure.

Cheers,
Dave
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Offline Hubie

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Re: Speaking of vibration
« Reply #55 on: 26.11. 2010 08:12 »
Just a thought though, doesn't the shock absorber spring on the engine sprocket eliminate the end float?
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Offline MG

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Re: Speaking of vibration
« Reply #56 on: 26.11. 2010 08:39 »
err, nope.

For the very same reason you can't help yourself out of a quick sand pit by grabbing your feet and pulling.  *smile* *whistle*
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Offline A10Boy

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Re: Speaking of vibration
« Reply #57 on: 26.11. 2010 08:48 »
The cush assembly merely clamps the inner race to the crank webb. The inner race can slide in the outer as it is a roller bearing. You need to set the end float using the corect thickness shims which you can buy in a packet of varying thicknesses. Beware some manuals [haynes] show / describe shims on the timing side. THIS IS INCORRECT.

Good Luck
Regards

Andy

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Offline LJ.

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Re: Speaking of vibration
« Reply #58 on: 26.11. 2010 09:11 »
In case you should need to remove the bearing Richard (Manosound) made an excellent tool to remove this...

http://www.a7a10.net/forum/index.php/topic,368.msg1717.html#msg1717

Good Luck... Let us know how you get on.
Ride Safely Lads! LJ.
**********************
1940 BSA M20 500cc Girder/Rigid- (SOLD)
1947 BSA M21 600cc Girder/Rigid-Green
1949 BSA A7   500cc Girder/Plunger Star Twin-(SOLD)
1953 BSA B33  500cc Teles/Plunger-Maroon
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Offline Hubie

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Re: Speaking of vibration
« Reply #59 on: 26.11. 2010 09:40 »
Shall do chaps,

I will respectfully request that someone explain setting the end float to me in a manner that befits my lack of experience in doing so (like a dullard!)  When I pulled the motor apart there were no shims on the crank, and four between the outside of the crank case and the sleeve on which the drive sprocket goes onto.

Cheers,

Dave.
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!