Author Topic: Another noise question -A7SS  (Read 5243 times)

Offline BSA500

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Re: Another noise question -A7SS
« Reply #60 on: 24.05. 2016 11:41 »
I will be stripping down all the cases and flushing all oil lines and galleries. And lots of extra deep cleaning of the tank. I think(hope) the float issue is down to the roller bearing outer not being fully home in the case as I have never had this much trouble in the past 26 years setting this up  :!

Offline Topdad

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Re: Another noise question -A7SS
« Reply #61 on: 24.05. 2016 11:57 »
Have you considered the SRM conversion ? One of the other benefits is that it sorts the end float .  *whistle*
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Offline BSA500

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Re: Another noise question -A7SS
« Reply #62 on: 24.05. 2016 12:23 »
I feel I would need to sell one of my children to pay for it. Not sure the wife is that understanding. Correct me if I am wrong wasn't the early longstroke engines fixed by a ball bearing or the later A50/65's ??.

Online metalflake11

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Re: Another noise question -A7SS
« Reply #63 on: 24.05. 2016 20:22 »
It's about £250 pounds BSA500, how much have you spent so far and got nowhere?

You seem a decent sort, who uses his bike as it was intended to be used......Often! Do yourself a big favour, get it done, and you'll not see the inside of those crank casings again for a long, long time.
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Offline BSA500

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Re: Another noise question -A7SS
« Reply #64 on: 24.05. 2016 21:16 »
It's about £250 pounds BSA500, how much have you spent so far and got nowhere?

You seem a decent sort, who uses his bike as it was intended to be used......Often! Do yourself a big favour, get it done, and you'll not see the inside of those crank casings again for a long, long time.
Perhaps next rebuild as I want the crank balanced and a few other things.

Offline BSA500

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Re: Another noise question -A7SS
« Reply #65 on: 08.07. 2016 20:33 »
Working on it again and a slight cock up. Loctite by the way really really holds the bearing on tight...
http://i11.photobucket.com/albums/a170/bsa500/DSC05029_zpsqj0xugit.jpg

 *sad2* *sad2*

Online muskrat

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Re: Another noise question -A7SS
« Reply #66 on: 08.07. 2016 21:19 »
G'day BSA500.
I find the safest way to pull the bearing is to pop out the rollers (keeping them in order and direction) with a scribe, then use a bearing puller in the groove. The rollers will pop back in the cage easily.
Cheers
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Online metalflake11

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Re: Another noise question -A7SS
« Reply #67 on: 08.07. 2016 22:32 »
My thoughts are with you BSA500!.......You've certainly got some sticking power, probably even more than the Loctite!

Hope you get some luck soon.
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Online RichardL

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Re: Another noise question -A7SS
« Reply #68 on: 08.07. 2016 22:41 »
G'day BSA500.
I find the safest way to pull the bearing is to pop out the rollers (keeping them in order and direction) with a scribe, then use a bearing puller in the groove. The rollers will pop back in the cage easily.
Cheers

Muskrat,

The last time you mentioned this, I tried testing the idea on a bearing that was already off the bike. Using an awl, I couldn't get enough bite on the rollers to remove any of them.

Richard L.
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Re: Another noise question -A7SS
« Reply #69 on: 08.07. 2016 23:39 »
G'day BSA500.
I find the safest way to pull the bearing is to pop out the rollers (keeping them in order and direction) with a scribe, then use a bearing puller in the groove. The rollers will pop back in the cage easily.
Cheers

Muskrat,

The last time you mentioned this, I tried testing the idea on a bearing that was already off the bike. Using an awl, I couldn't get enough bite on the rollers to remove any of them.

Richard L.
Richard, I believe Musky doesn't mean the thin pointy sort of scribe; I think he means he got a member of his church to pop the rollers out!

Offline duTch

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Re: Another noise question -A7SS
« Reply #70 on: 09.07. 2016 00:59 »

 
Quote
Is there any wear marks on the thrust face of the timing bush? If every thing is done correctly that's the only place that can create end float.

 I meant to mention back then but forgot,  and that is to say have a look at the thrust face at the drive side end.  Mine was worn under flush and I had to add extra thickness just to get to a starting point  *eek*. There should be a raised landing  for the bearing of a few thou.
  My main normal was also worn, and that has a 0.020" sleeve over it- not ideal,  but no choice. I also meant to mention that bit some time ago when we were discussing building up journals with weld or metal spray
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Re: Another noise question -A7SS
« Reply #71 on: 09.07. 2016 07:25 »
Nice one Gb. I was an altar boy as a kid. I've certainly altered! If I walked into church now the roof would cave in on me  >:D
Richard, I've never had a problem prizing them out (both steel or plastic cage). Maybe I'm not afraid to use a bit more force  *bash*.
duTch, if that face (not intended to be a thrust face) was worn the inner bearing would have to been spinning against it  *eek*. Meaning the bearing had seized solid.
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Offline duTch

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Re: Another noise question -A7SS
« Reply #72 on: 09.07. 2016 09:20 »

 
Quote
duTch, if that face (not intended to be a thrust face) was worn the inner bearing would have to been spinning against it  *eek*. Meaning the bearing had seized solid.

 yep, that was about my summation too, especially with a worn journal as well. I can't remember where that one came from and know nothing of its history, but I needed a crank  and it was what was available. Twasn't until I rebuilt it this time and with another to compare that I realized what had happened  *conf*.
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline BSA500

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Re: Another noise question -A7SS
« Reply #73 on: 02.08. 2016 11:00 »
Okay the rebuild begins again. New driveside bearing is in. Checked endfloat 26 thou so not a problem. This time I am setting up the endfloat with no conrods oil pump etc and it seems easier less resistance to side to side movement. Also I have a 7 week deadline as I am going on the distinguished gentlemans ride  *eek*

Offline duTch

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Re: Another noise question -A7SS
« Reply #74 on: 02.08. 2016 11:44 »

 Good luck, I did a clutch adjustment yesterday and reminded myself to check endfloat; arbitrarily ~4thou"
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia