Hi all
Just wanted a bit of information on forks / brakes for above.
It has what I believe to be a 69/70 Triumph TLS setup. The cable comes from the top of the plate.
My question is are the forks A10 or would they have been modded to fit?
Thanks
Hi,
They are modified to fit.
https://www.a7a10.net/forum/index.php?topic=9549.msg69255#msg69255
Best wishes...
Thanks
Looking at that thread it talks about building up forks etc but it doesn't look like any of that's been done
Would the bottom sliders have been changed to the triumph type? They certainly look like A10 from the photos on the net.
Thanks
A bit more research tells me it looks like a Triumph T120 front wheel with the 69/70 brake plate.
Is this a straight swap for the original single setup or do the forks have to be changed to match the wheel.
I can't seem to post photos.
Thanks
Hi,
A photo will help, you probably need to resize the image using edit in Paint or office picture manager in windows.
Best wishes...
Hopefully these will give enough information
You have a mix of parts.
Forks are BSA not Triumph.
Brake is BSA Triumph type 1969/70
The TLS was originally fitted with clamp up fork bottoms for the spindle rather than screw in.
Someone has adapted the right leg by adding a lug to engage with the brake plate.
The forks could be A65 damper rod type - rod attached to top nut and captive in the damper body which is attached to fork bottom.
Otherwise could be A10/Gold Star type.
Thanks for the reply
Is there any other way I could identify the exact type?
Some of the A10 fork sliders I have seen show the lug fitted.
There is a bit of a clicking but I don't think it's the head bearings so was going to strip and examine the forks over the winter but I don't want to get them off and be in a mess.
Looking again you do have the clamp up forks, my mistake. Sorry.
I think the bottoms are A10 type, the A65 are more substanial around the spindle.
Take one of the top nuts off, should be a plain nut for A10 type (or with a damper rod which comes completely away with it if Eddie Dow dampers fitted) The A65 it will have a damper rod which you will need to unscrew from the nut to completely remove it.
A10 type first photo.
A65 second photo.
Third photo A65 top A10 bottom note the difference in the lug for the brake plate.
No need to apologise, I appreciate you taking the time to reply.
I have taken one of the tops off and they are nuts, no damper etc attached in there.
Looking at the photos (which are a massive help) I can see that the A65 has the drain hole in the middle whereas the A10 has the drain hole offset. Mine has the drain hole in the middle so I am right in assuming that makes them A65?
The distance between the flat mating surface of the spindle clamp and the point where the screw starts for the seal holder on the top of the leg is around 260mm.
The distance between the mating surface of the spindle clamp and the top of the lug that holds the brake plate is approx. 90mm
My photos aren't great as I have had to shrink the size to be able to post them.
So when I finally understand what I have the question is should I leave it as it is set up or should I do something else?
Thanks
Looking at your original photos, they look very much like A65 to me. If there are two dimples in the chromed fork oil seal holders (not visible in the pic) then they are definitely A65.
My guess is they were fitted along with the TLS front brake as the hub looks identical to my A50. it makes sense to fit the forks, wheel and brake as one to save buggering about making the TLS fit the A10 hub.
Hi
I can't see any dimples in the seal holders, could you help me with a photo or some more information on what to look for please
Also
There are no internal damper rods in the forks either so I'm a bit puzzled.
Thanks
No dimple so not later A65 forks.
The photos show a set of forks from a 1959 A10 Super Rocket. Same forks for 1958 model.
I am sure this is what you have fitted.
Compare the area around the spindle clamp on these with that of the above photo with TLS fitted and you will see it is more substantial on the later. These forks are from a 1968 A65 Lightning. Damper rod attached to top nut on these.
Thanks Julian
Last question (I think) would damper rods have to be fitted if they wee anything other than A10?
It looks like they are the correct forks for the bike with the info I have been given. It's a 1958 super rocket registered in June 1958.
Your forks are not A65 damper rod forks the shape around the spindle clamp is not A65.
Thanks Julian
That's sorted that then!
Thanks for all the replies, will strip and overhaul when it gets a bit colder.
I finally got round to stripping the forks off yesterday and I found that they are indeed a10 or I am pretty sure they are.
No damper rod.
There was a clunking on the LHS leg and when I took it apart I noted that the bottom nut was loose and the bottom bush could be spun. I also noted that there are no shins fitted to either forks.
Lastly which I found a bit strange, there was very little oil in the legs.
The bushes measure pretty much the same as what I have found in the net. It looks like someone has previously changed them as the seals look pretty new so the probably forgot to fill the legs up!
Could anyone point me to where the best place for shims is please, or does anyone have any that they would be able to part with?
Thank you
I've just ordered a set of fork shims (4 thicknesses) for my B40 from Feked. They're a common part in many models but check your spares catalogue for part numbers. I think they're also available separately from Draganfly but you'll need to know what thickness you'll need before ordering.
Thanks for that, when I get to put them back together I will measure up and go from there
Re the clicking. If this is when pushing the bike against the brake, check that it is not the brake plate. The lug on A10 forks is sometimes a bit thinner than A65 allowing the brake plate to move slightly.
Dave.
Thanks Dave
I will make sure I check when I put it back together.
You can do away with the shims and the circlip (which can be difficult to remove and replace) and replace them with the spacer (or widget) used in A65 1966-1968 damper rod forks. The small diameter end sits on the top edge of the top bush and the large diameter goes into the oil seal holder and sits on the ouside edge of the oil seal. Stops the chatter when there is a gap between bush and circlip. Part 68 5134.
Hi Julian
Thanks
Will look into that as looks like a good solution
Re the Clicking. The Triumph Brake Plate has a larger slot for the fork anchor than the BSA so if they are BSA Forks, the plate will flap about.
We did a Tech article in The Star sometime ago about this. Another one (about the Eddy Dow brakes etc.) is coming along in the next couple of months.
I will look up older one and give everyone the heads up on which edition it was in.
Chris
Thanks Chris
Im pretty sure it does have that set up and the clicking was from that side too.
Reference the Technical Tips Star article, There is a letter in the August 2003 issue referring to the fork leg slot problem and in December 2015.
You can now find an complete index to all Technical Tips published in the Star by logging into the Members Area.
Rob