Recent Posts

Pages: 1 2 3 4 5 [6] 7 8 9 10
51
All Other Bikes / Re: If VW had made a motorbike
« Last post by Greybeard on 19.08. 2019 19:56 »
I'd like to see the other side to see if they've joined another wing to make a better shape. That saddle looks a bit slopy, eh?
52
Frame / Re: Rubber mounted head steady
« Last post by RoyC on 19.08. 2019 19:37 »
Hi All,
T20,
Those bushes would seem ideal for the job
Rather than weld directly on to the bush outer with the risk of damaging the rubber
I think a steel tube that the entire bush could be pressed into it could have the "legs" welded to it before pressing in the bush?
John

Or try to press the rubber out of the outer tube, weld it, then press back in, with the help of silicone grease.
I have ordered one to try it.
53
All Other Bikes / Re: If VW had made a motorbike
« Last post by lawnmowerman on 19.08. 2019 18:52 »
More like a wing and a prayer  *smile*

Jim
54
Frame / Re: A7 Centre Stand
« Last post by Greybeard on 19.08. 2019 18:42 »
As your bike has a rigid frame I don't know if this is helpful to you: The stand on my 1955 Plunger has a length of 8.5", (215mm), from the centre of pivot to bottom of the foot. The angle-of-the-dangle looks ok to me and the rear wheel is just off the ground. My stand has the toe extension.

I know this is not scientific but I've drawn a white line on the picture of your bikes back wheel, copied it and pasted it onto the stand leg to get some idea of its length. It looks like you still have 19" wheels, same as mine. I've measured the radius of the back wheel of my machine. I get a length of 10", (255mm). If I can trust my work, your stand appears to have a similar length to the wheel radius, ie. 10".
55
Frame / Re: Rubber mounted head steady
« Last post by chaterlea25 on 19.08. 2019 18:31 »
Hi All,
T20,
Those bushes would seem ideal for the job
Rather than weld directly on to the bush outer with the risk of damaging the rubber
I think a steel tube that the entire bush could be pressed into it could have the "legs" welded to it before pressing in the bush?
John
56
A7 & A10 Engine / Oil suddenly coming out of breather
« Last post by A7SS-rph on 19.08. 2019 18:07 »
This is an explanation of a problem and how it was solved by looking at various threads on this forum.

I have just finished quite a bit of work on my A7 SS engine top end and new SRM clutch etc. Because of other commitments the bike has been laid up for just over a year. Before I ran it, I drained the sump of the oil.

Took it out for a short ride of about 6 miles, and things seemed ok.

After another few days, started it up for a friend to listen to it and after a short space of time it started smoking like hell. There was then a loud gurgling and a lot of oil dumped on the floor.

Realised it had come out of the breather and started a trawl of this forum. There were several theories, but the one easiest to check was the 'return feed to the tank blocked' theory.

Removing the sump plate showed that the gauze was not blocked, so found the piece of wire to check the ball in the anti syphon thingy. Initially it hardly moved but then all seemed better with more oil coming out. I then got the air gun from my compressor and blew up the pipe. I could hear the air exiting into the oil tank.

So, this is just an explanation of how I fixed a problem thanks to you lads out there.

Keep on with the good suggestions to help us keeping our bikes on the road.

Peter

57
Frame / Re: Rubber mounted head steady
« Last post by RoyC on 19.08. 2019 17:30 »
Has any one worked out how to rubber mount the rest of the engine ?
58
Frame / Re: Rubber mounted head steady
« Last post by t20racerman on 19.08. 2019 15:02 »
Accepting the concerns over a rigid head steady being likely to accelerate onset of rocker cover leaks, I don’t see that there can be much/any difference between having a rubber mounted steady and none at all. It’s not going to hold the engine still is it?

Hi cyclobutch
I know it sounds like that, but these bushes barely move. They just move enough to have the rubber damp out the vibrations. Hence, the head is held steady, with just a tiny bit of motion, unlike the motion it would have if it had no steady at all. A bit like how cricketers bat with 'soft hands' if they want to take pace off the ball. The reduction in shear stress between the head and rocker cover is significant.

I rubber mounted my T20 Suzuki classic racer using these bushes and having done the job, was disappointed at how tiny the motion was when you revved the engine - You could feel it, but not see it. I thought I'd wasted my time, but the bike vibrated much less, and more importantly the frame and engine casings stopped cracking - as they had repeatedly before then. Its definitely worth considering if you are plagued by the dreaded rocker cover leaks..

Adrian
59
Frame / Re: Rubber mounted head steady
« Last post by cyclobutch on 19.08. 2019 14:03 »
Accepting the concerns over a rigid head steady being likely to accelerate onset of rocker cover leaks, I don’t see that there can be much/any difference between having a rubber mounted steady and none at all. It’s not going to hold the engine still is it?
60
Frame / Re: A7 Centre Stand
« Last post by Swarfcut on 19.08. 2019 14:00 »
Mags... The stand does not look right, almost as if the feet are pointing backwards. The frame is  a rigid type and I do not know offhand if this frame uses a different one from the plunger frame. So as with any bike this age, the stand could simply be incorrect, worn, wrongly fitted, modified or one  codged to fit. Have a look at the Draganfly website, their illustrated part lists and accompanying pictures of parts should help. Follow the link on Musky's post.

 These stands suffer wear on the pivot pins, the top of the stand where they contact the frame stops, and the frame stops themselves. All fixable with a bit of grinding, welding and fabrication. New stands are available from time to time as further treasures turn up, but seem pricey for such a simple part.

Swarfy.
Pages: 1 2 3 4 5 [6] 7 8 9 10