The BSA A7-A10 Forum

Technical => Frame => Topic started by: UncleD on 10.01. 2019 07:24

Title: Today's mystery object.
Post by: UncleD on 10.01. 2019 07:24
Started my 1958 Super Rocket today and this fell out (from around the centre stand area).

Any ideas?
Title: Re: Today's mystery object.
Post by: WozzA on 10.01. 2019 07:30
My guess is it's from your battery carrier...    *smile*
Title: Re: Today's mystery object.
Post by: ellis on 10.01. 2019 08:50
Hi UncleD.

It could possibly be the oil tank clamp bolt.

ELLIS
Title: Re: Today's mystery object.
Post by: Swarfcut on 10.01. 2019 09:59
Uncle D.... Have a good look around that battery carrier. Two bolts, a top battery strap and two battery side straps should be there, as  nicely pictured above The bit that fell off looks like the upper plain pin 42-4505 from the top strap. The retaining bolts 24 7343 pass through into the lower threaded pins 42 4506.  Easy to fabricate if you find the cupboard bare.

  Give the oil tank a waggle in case I am wrong!

 Swarfy
Title: Re: Today's mystery object.
Post by: UncleD on 10.01. 2019 10:19
I did top up the battery amongst other things during a fortnight of fiddling so reckon you're spot n...shame I put the seat back on this afternoon!

How is this for typical?  After working on carby, brakes, sump, head steady, dynamo chain (all with unexpected dramas), I fired her up and the headlight fell out and broke on the mudguard.  To be honest, between the S/R and issues timing my Harley, this did not surprise me at all!  I just calmly said.."bloody typical" and got another beer.

I must say though, i took her (S/R) for a spin this afternoon and was blown away by how quick she is.  She has a lager carb (389) and I've just changed up to a 107 needle and 320 main but I can't believe this is the the sole cause.  I'm hoping I've struck it lucky and whoever had it previously has fitted some goodies inside..I will hold on to this nice thought until the next thing breaks.

Thanks to all for your support and ideas.
Title: Re: Today's mystery object.
Post by: Swarfcut on 10.01. 2019 10:46
Uncle D.....Talk about Sod's Law.....Fix the motor......electrics fail....fix electrics.......repeat.....

  From hard won experience, use Loctite on every fastening. It obviously keeps things in place, but will also lessen the corrosion between threads making dismantling that bit easier next time. Maybe head Bolts would be the only exception.
 
  Warming a loctited part with a hot air gun softens it enough if it is a bit too difficult to undo simply by hand.

 Nice to know you are back on the road....Just be careful, travelling at warp factor 6. Wear the cloak of invisibility in your mind and anticipate no one has seen you and they are likely to pull out in front of you. This mindset has worked for me  since I first took to the road on my first push bike.

 Swarfy.
Title: Re: Today's mystery object.
Post by: bsa-bill on 10.01. 2019 10:57
Quote
My guess is it's from your battery carrier...

My guess too
Title: Re: Today's mystery object.
Post by: Klaus on 10.01. 2019 11:26


 Nice to know you are back on the road....Just be careful, travelling at warp factor 6.

 Swarfy.

 *pull hair out*
that means 0,00340372 sec. too the moon *eek*

very fast bike *yeah*
Title: Re: Today's mystery object.
Post by: duTch on 10.01. 2019 12:07

 I think the name for that is a 'trunnion'- pick your purpose of choice
Title: Re: Today's mystery object.
Post by: BSARGS650 on 10.01. 2019 14:12
I reckon a squashed battery strap to be found......
Title: Re: Today's mystery object.
Post by: RichardL on 10.01. 2019 15:03
I would say, don't ride it again until you fix it, especially if you have a refillable acid battery. I once had my carrier come apart and the acid splashed out marring some nice new chrome, not to mention losing original '55 battery carrier parts. Now I use only permanently sealed gel-filled batteries. Nevertheless, I tie all the carrier parts together and to the frame with tie wraps.

Riochard L.
Title: Re: Today's mystery object.
Post by: Greybeard on 10.01. 2019 15:11
I think the name for that is a 'trunnion'...

He knows his trunnions that boy!
Title: Re: Today's mystery object.
Post by: UncleD on 12.01. 2019 10:33
Battery strap it was...all fixed.

Where I live there are very few corners and no hills so speed is everything!