Burman BA - Gearbox Adjustment Peg

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paul.ptak
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Burman BA - Gearbox Adjustment Peg

Postby paul.ptak » Sun Feb 02, 2014 7:53 pm

A previous owner my bike did me favor by cutting & grinding the end of the gearbox adjustment peg on my BA.

I reviewed my photos before disassembly of the bike and realize that the adjustment eye bolt & nut were not installed and not included in the coffee cans of grungy nuts & bolts included with the bike.

This is probably a part that does not require replacement often, I cannot find it available as a spare. Does anyone know if a new part is available? If not available, it should not be a difficult part to make.

Is it possible for someone to post a couple photos of this area of the gearbox with and without the eye bolt in place? I can probably judge from photos on how to reproduce the part, but a few dimensions would be very helpful.

Thank You.

Paul
1950 4G Mk I

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keith.mettam
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Postby keith.mettam » Sun Feb 02, 2014 8:56 pm

Hi Paul,
Looks like it is part no. 2330-29 (eye bolt) and the associated adjuster nut is 2336-35. Add a 'Q' to the catalogue number for stainless steel items. For Sq4 1937-58 and presently in stock at DraganFly in the UK.
Regards,
Keith.

paul.ptak
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Postby paul.ptak » Sun Feb 02, 2014 10:36 pm

Thanks Keith...I've found those parts on line from a couple different vendors. The peg on the gearbox case that the eyebolt slips around is the challenge that I have right now.

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simon.holyfield
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Postby simon.holyfield » Sun Feb 02, 2014 11:14 pm

There is nothing special about the peg Paul. There are one or two photos on my blog, mainly on the gearbox pages. The peg is a plain cylinder, about the same length as the thickness of the eyebolt, of a diameter such that the eyebolt is a loose clearance fit. It's a n interference fit in the casing.
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'78 CX500
http://ariel-square-four.blogspot.com

paul.ptak
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Re: Burman BA - Gearbox Adjustment Peg

Postby paul.ptak » Mon Feb 03, 2014 12:25 am

Thanks Simon.

I looked at your blog knowing you have a bunch of photos posted there, but couldn't find a photo at the correct angle to see it clearly. Your description of the part is what I was hoping to hear.

Thanks!

Paul

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simon.holyfield
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Postby simon.holyfield » Mon Feb 03, 2014 6:45 am

No, there isn't one that is showing it from the side is there - which is what you really need. Are you ok now? I may have more pictures on another computer...
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'78 CX500
http://ariel-square-four.blogspot.com

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brenton.roy
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Postby brenton.roy » Mon Feb 03, 2014 11:38 am

All upside down because it's on an iPad, which thinks it is smarter than me and does what it wants..
Anyway, you get the idea whichever way up they are.
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simon.holyfield
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Postby simon.holyfield » Mon Feb 03, 2014 4:01 pm

What is that small hole for Brenton?
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'78 CX500
http://ariel-square-four.blogspot.com

paul.ptak
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Re: Burman BA - Gearbox Adjustment Peg

Postby paul.ptak » Mon Feb 03, 2014 7:24 pm

simon.holyfield wrote:What is that small hole for Brenton?


I was wondering the same thing...first thing that comes to mind is a cotter pin, but I am assuming that the mounting plate removes any chance of the eyebolt coming off the pin. It's below zero Fahrenheit here and I haven't been motivated enough to start mocking up frame and mounting plates.

Paul

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simon.holyfield
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Postby simon.holyfield » Mon Feb 03, 2014 7:46 pm

You are right Paul. When it is all together, the adjuster is quite wobbly, but the eyebolt, as you say, is retained by the gearbox plate. The nut is also trapped in a U shaped slot.

Sounds like the weather for some armchair research with a mug of something warming!
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'78 CX500
http://ariel-square-four.blogspot.com


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