The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: hdawson on 05.12. 2017 21:09

Title: Fork upgrade kit
Post by: hdawson on 05.12. 2017 21:09

Hi all.
Does anyone know where I can purchase a set of Eddie Dow dampers and springs in Aus?
The 57 pound  delivery from SRM in the UK on items worth 135 pounds is a  little  excessive.
Thanks in advance,
Hadrian.

Title: Re: Fork upgrade kit
Post by: chaterlea25 on 06.12. 2017 00:08

Hi Hadrian,
Way back in 2010 *eek* I added a thread and drawing of the dampers

https://www.a7a10.net/forum/index.php?topic=2895.msg19476#msg19476

If you can access machining facilities its an easy job to make a set

At the time there was discussion on the length of the "rod" as the valve does not reach the oil with the factory
amount filled in
Recently Julian added the instructions from Eddy Dow,
Fitting the Dow complete kit involved fitting longer fork bushes, this shortens the overall fork length from standard
by 2 in.
No mention is made of fitting the dampers to standard forks *????*

I added extra oil but reduced viscosity to 10weight when  I fitted the dampers to my A10
experimenting until I was happy with the "bounce"

John

Title: Re: Fork upgrade kit
Post by: muskrat on 07.12. 2017 19:20

G'day Hadrian.
I used John's drawing to make a few sets. Was thinking of making a few more next year (after moving house).
Cheers

Title: Re: Fork upgrade kit
Post by: hdawson on 08.12. 2017 00:56

Thanks guys.
No machine tools or skills unfortunately.
Musky, let me know if you have a set for sale.
Cheers, Hadrian.

Title: Re: Fork upgrade kit
Post by: Tomcat on 08.12. 2017 05:52

I bought mine from Paul Goff (UK) as they have the exposed nuts and that was the look I was after. Made from stainless steel so fit and forget  *smile*  http://www.norbsa02.freeuk.com/goffyfork.htm

Title: Re: Fork upgrade kit
Post by: Bsareg on 08.12. 2017 09:55

Got mine from Autocycle Eng.  [email protected] 01384 253030. Much cheaper than SRM and a good quality. Firm is own by Chris Vincent the sidecar racer, so they know what's what.

Title: Re: Fork upgrade kit
Post by: JulianS on 08.12. 2017 10:06

I think you will find Autocycle is owned by Chris Williams.

Title: Re: Fork upgrade kit
Post by: BSARGS650 on 08.12. 2017 11:24

Hi chaterlea25: Regarding the Dow longer bushes, was that due to fitting the alloy Superleggera top yolk because of the difference from the original yolk?

Title: Re: Fork upgrade kit
Post by: chaterlea25 on 08.12. 2017 12:58

Hi RGS,

Quote

Regarding the Dow longer bushes, was that due to fitting the alloy Superleggera top yolk because of the difference from the original yolk?

Yes,

https://www.a7a10.net/forum/index.php?topic=12359.msg96476#msg96476

https://www.a7a10.net/forum/index.php?topic=3733.15

John

Title: Re: Fork upgrade kit
Post by: hdawson on 08.06. 2019 08:41

Hi All.
Seeking further advise from this old topic.
I have just purchased a lathe and am super keen to start learning a whole new set of skills.
John, what material should I use for this project?
Someone has suggested that I use aluminium.
Cheers,
Hadrian.

Title: Re: Fork upgrade kit
Post by: Rookie_V#60 on 08.06. 2019 12:30

Yes, see here:
https://www.a7a10.net/forum/index.php?topic=13638.0
Cheers Rudy

Title: Re: Fork upgrade kit
Post by: coater87 on 08.06. 2019 15:48

 Hi Hadrian,

 Congratulations on the new purchase.

 if you are brand new to using a lathe, read this  http://vintagemachinery.org/pubs/1617/3789.pdf (http://vintagemachinery.org/pubs/1617/3789.pdf)

 This was required reading at one time, and you had to buy the paper copy. I still have mine somewhere.

 There is a lot of information packed into that book that may save someone hours and hours of trial and error (another term for frustration).

 Lee

Title: Re: Fork upgrade kit
Post by: muskrat on 08.06. 2019 20:48

G'day Hadrian.
I used alloy for mine. Both the rod and valve unit.
Start a new topic in Chat re the lathe with a pic or two  of your purchase.
Cheers

Title: Re: Fork upgrade kit
Post by: hdawson on 09.06. 2019 06:51

Thanks for the lead Lee. It looks very helpful and I need all the help I can get.
Musky, I have to wait a week for delivery and will post a pic.
The machine is quite small but I wanted an entry level model to learn the tricks of the trade.
I was assured that it would be suitable for my small projects.
Cheers,
Hadrian.