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Shake, Rattle and Roll
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Highfield
Epsom, Surrey
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February 26, 2020 - 8:13 pm
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Over the past few weeks I've managed to get out on a few runs around town on my D7, which I only bought on the 11th January 2020. I've enjoyed getting out and about and I believe it's always good to give the bike a run out if I can. I expected a 55 year old bike to shake, rattle and roll a bit more than modern bikes however, one thing I've found is that I've had to tighten up quite a few nuts and bolts, such as the top fork nuts, the top and bottom yoke pinch bolts, the headlight cowl bolts, the engine cover bolts etc. even though the bolts have spring washers fitted where required. The last time I was out I noticed the clutch wasn't working properly and after a quick check found the adjuster lock nut to be loose. 

What I don't know is if these nuts and bolts were a little bit loose when I bought the bike and they've got a little bit more loose as I've been riding around or is this a common issue and it's just good practice to regularly check the tightness of the various nuts and bolts on the bike? 

Any advice from those who have been around the block on their Bantam's a few more time than me would be greatly appreciated.

Highfield

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nickjaxe
Runcorn Cheshire UK
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February 26, 2020 - 8:56 pm
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Hi sorry didn't catch your name but good to have you on board....think you must have had lots of loose fixings....had my B175 around 5 years...not had any probs so far with nuts bolts loosening.

Saying that the points used to close up on me until I fitted a second lock nut.

Hope you have as much fun with your as I do on mine.

Nick.

My Bantam video              https://www.you.....jpOFmzRZRI

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NeilB
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February 26, 2020 - 10:37 pm
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Doesn't sound normal, it's a bantam not a harley! You say "top and bottom yoke pinch bolts", but on the D7 there aren't top yoke pinch bolts. Am I misunderstanding, it perhaps it's been modified?

Is it the engine vibrating a lot, or just the bike when moving? 

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wildun
Lincolnshire.
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February 26, 2020 - 11:34 pm
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NeilB, my D7 top yolk has a pinch bolt, as does the bottom yolk.

Highfield, it is not normal for nuts, bolts etc to come loose when riding. But most likely you do not have a problem, merely that you have a newly acquired bike where the previous owner has maybe built the bike up but not used it on the road as you are now doing. So, it will be a good way of getting to know your new bike by going round it checking every nut and bolt that you can find. Do every one up as tight as you can using the correct size and length of spanner, don't get carried away with sockets on long tommy bars. Once you have done that then I would imagine that you will have no further problem.

If you had a vibrating engine then I think that you would know about it in other ways, through the handlebars, footrests etc. Healthy Bantams don't vibrate like some other bikes, but they do clatter and thump at each end if you don't avoid the potholes !

Enjoy your Bantam.

1951 Bantam D1 125, 1954 Bantam Enduro 125, 1970 Bantam B175, all Bantams on the road and ridden regularly, 1995 Yamaha Diversion 900 and 2016 Honda Integra 750 scooter. Horses for courses, all very different to each other, but a bike for every occasion.

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NeilB
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February 27, 2020 - 7:20 am
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wildun said
NeilB, my D7 top yolk has a pinch bolt, as does the bottom yolk.

Do you mean the steering head pinch bolt? Neither my D7, nor the parts diagrams have a fork pinch bolt, perhaps this is why I'm confused dunno

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wildun
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February 27, 2020 - 10:06 am
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yes, NeilB, the pinch bolt on the top yolk, as Highfield wrote in his original post, he didn't mention fork pinch bolts.

You are quite right, the top yolk pinch bolt clamps the steering head nut. This is the last bolt to do up in sequence when building up the front fork/yokes assembly to the frame, when you are satisfied that the bearings have enough clearance for smooth steering but without play.

1951 Bantam D1 125, 1954 Bantam Enduro 125, 1970 Bantam B175, all Bantams on the road and ridden regularly, 1995 Yamaha Diversion 900 and 2016 Honda Integra 750 scooter. Horses for courses, all very different to each other, but a bike for every occasion.

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NeilB
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February 27, 2020 - 12:51 pm
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Fab, back on the same page thumbs-up

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Blue Heeler
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February 27, 2020 - 1:43 pm
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Hi Highfield,

Never had that little lot work loose before, what with spring washers fitted too. Fingers crossed that the same light-handed rebuilder of the aforementioned parts, didn`t assemble the engine too!

Regards,

Blue

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Highfield
Epsom, Surrey
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February 28, 2020 - 1:13 pm
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Thanks everyone for their replies, my mind is much more at ease now.

The bike had been in storage by a local collector so it wasn't being used on the road much if at all. Maybe that's why it was things weren't tightened up properly as it was garaged most of the time.

I have been round the bike with my trusty spanners so hopefully all should be ok now, time will tell 🙂

NileB, sorry for the confusion, I did mean the steering head pinch bolt!

Looking forward to the warmer weather to get out and about a bit more and test them bolts!!! 

Cheers

Highfield

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Bryan Price
near Grantham
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February 29, 2020 - 1:03 am
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My wife says that the only nut on my Bantam is the one holding onto the handlebars

mesmerised

D1 Plunger, D3 Swing Arm, D14/4 . Also e-mail me: membership@bsabantamclub.org.uk

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wildun
Lincolnshire.
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February 29, 2020 - 8:21 pm
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Ah Bryan, but how tight is that nut ? Some of your friends in the club rally beer tent will probably have the answer !!

1951 Bantam D1 125, 1954 Bantam Enduro 125, 1970 Bantam B175, all Bantams on the road and ridden regularly, 1995 Yamaha Diversion 900 and 2016 Honda Integra 750 scooter. Horses for courses, all very different to each other, but a bike for every occasion.

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NeilB
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February 29, 2020 - 8:30 pm
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First ride out today, and although I had some minor niggles, smoothness wasn't one of them. I'd say at least as smooth as any modern 4 stroke 125 I've ridden, and certainly didn't feel it's age even though I guess it isn't really that old when it's all just been rebuilt! thinking

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