Back on a Bantam.

Classic Bike Forum's very own Bantam Guru dispenses expert advice on all things Bantam related.
arsey30
Posts: 23
Joined: Mon Feb 23, 2009 3:30 pm

Back on a Bantam.

Unread post by arsey30 » Sat Jan 14, 2012 12:37 pm

I am back on a B175 after a 30 year layoff and it seems pretty much as I remember the old one.

The only difference is the vibration over 50mph. I seem to remember the old one was reasonable to 55-60, what is the normal max cruising speed of the B175 before vibes are a problem [bars, footrest, seat]

Thanks.

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Greenbat
Posts: 2748
Joined: Tue Feb 17, 2009 11:25 pm

Re: Back on a Bantam.

Unread post by Greenbat » Sat Jan 14, 2012 2:27 pm

The vibration smooths out above 55ish, you should easily get 60 out of it.

arsey30
Posts: 23
Joined: Mon Feb 23, 2009 3:30 pm

Re: Back on a Bantam.

Unread post by arsey30 » Sat Jan 14, 2012 3:42 pm

Thanks, it did smooth out a bit around 55 and reached 65 quite easily but was vibrating a lot by then.
Sounds like mine is reasonably normal, best keep 45 to 50, or just over 55 then.

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Iand
Posts: 755
Joined: Mon Feb 23, 2009 5:43 pm

Re: Back on a Bantam.

Unread post by Iand » Sat Jan 14, 2012 10:26 pm

nice bike arsey, mine (67 D10 3 speed) vibrates from about 15 all the way up to 60!
where abouts were the photos taken, looks nice.
1960 lambretta Li125 sold; 2001 Honda CG125 sold; 2006 Yamaha FZ6 sold; 1980 Kawasaki Z500 sold; 1967 BSA Bantam D10; 2008 Aprilia Shiver sold; 2010 KTM Duke 690R; 1954 BSA Bantam; 1980ish Kawasaki Z200

Buckinghamshire, UK

arsey30
Posts: 23
Joined: Mon Feb 23, 2009 3:30 pm

Re: Back on a Bantam.

Unread post by arsey30 » Sat Jan 14, 2012 10:31 pm

Pictures taken between Hindhead and Guildford.
[Thursley, Godalming, Aldershot areas.]

The Mighty Gusset

Re: Back on a Bantam.

Unread post by The Mighty Gusset » Sat Jan 14, 2012 10:42 pm

I'm detecting an attempt to bring the Bridge Club in from Over There !

arsey30
Posts: 23
Joined: Mon Feb 23, 2009 3:30 pm

Re: Back on a Bantam.

Unread post by arsey30 » Sat Jan 14, 2012 11:04 pm

The Mighty Gusset wrote:I'm detecting an attempt to bring the Bridge Club in from Over There !


No, I came here for special Bantam advice, the only pictures I have are the ones taken for the bridge club, [I have only been riding it a few weeks] and I think a bike looks better in a country setting, rather than in the back yard.


Dave.

The Mighty Gusset

Re: Back on a Bantam.

Unread post by The Mighty Gusset » Sat Jan 14, 2012 11:08 pm

Only pulling your leg !
There's nowt wrong with the Bridge Club - in fact it's quite entertaining.

Velton
Posts: 1425
Joined: Fri Feb 20, 2009 1:51 am
Location: London, England

Re: Back on a Bantam.

Unread post by Velton » Sun Jan 15, 2012 1:17 am

Vibration on a Bantam?

Check the engine mounting bolts!

Not only that they are properly tightened up but also the right size bolt and that the mounting holes are not enlarged / oval etc.
My old Bantams had all been butchered or bodged in this area.

(You might well have excluded this, of course???)
Just being old doesn't make it a "Classic."

Aaaah! Nostalgia is not what it used to be!

arsey30
Posts: 23
Joined: Mon Feb 23, 2009 3:30 pm

Re: Back on a Bantam.

Unread post by arsey30 » Sun Jan 15, 2012 5:56 pm

Thanks for that, I did check that the bolt holes were undamaged and the bolts were correct.

I have fitted new plain shank high tensile ones anyway now.

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