Search found 29 matches

by AndyCapp
Sat Aug 20, 2016 11:39 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Mystery part in crank
Replies: 3
Views: 5379

Re: Mystery part in crank

On thinking about it more, I came to the conclusion it's far too large to have found its way there from somewhere else, so must originate from there. If this was placed directly in the middle, it would direct the oil flow around it - towards each plug. Without this, the oil would simply flow straigh...
by AndyCapp
Sat Aug 20, 2016 10:33 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Mystery part in crank
Replies: 3
Views: 5379

Mystery part in crank

Crank_MysteryPart.jpg
My big end has expired after only 8000 miles. On removal of the two plugs from the crank web I found this wedged in the middle. Ok, this explains my cranks early demise, but what is this part and where did it come from? It appears to be spring metal.
by AndyCapp
Sun Aug 14, 2016 12:09 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: SKF Sprag bearing
Replies: 9
Views: 11556

Re: SKF Sprag bearing

Another SKF sprag failure - this time it has damaged both inner & outer races. I guess getting these repaired would be vastly expensive ... I do have spare starter gear & primary drive from an old engine, but these failures are getting a bit much. Didn't I read somewhere that it's possible to do som...
by AndyCapp
Sun Aug 07, 2016 10:54 am
Forum: Electrical & Gauges Shop
Topic: Generator light controller..VOLTIMETRO 6710603
Replies: 4
Views: 7070

Re: Generator light controller..VOLTIMETRO 6710603

I have the diagram and circuit board layout if you'd like to build your own. It fits in the original red plastic case.
I can't seem to upload them as they are too big (its only 400k)
by AndyCapp
Sat Aug 29, 2015 11:11 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: SKF Sprag bearing
Replies: 9
Views: 11556

Re: SKF Sprag bearing

My SKF 445419 lasted only 12 months and around 50 starts. No obvious sign of wear or damage to the parts the bearing fits into.
by AndyCapp
Mon Aug 11, 2014 11:07 pm
Forum: Wheel, Brake & Tyre Shop
Topic: Disc run-out
Replies: 2
Views: 5320

Re: Disc run-out

It's the rear disk, so that nice big aluminium bracket allows a fair bit if lateral movement - so no pulsing on the brake pedal. I noticed the problem after applying the brake and the pads had retracted, I could hear the pads were not clear during half the wheel rotation. Due to disc wear/scoring ov...
by AndyCapp
Sun Aug 10, 2014 9:21 am
Forum: Wheel, Brake & Tyre Shop
Topic: Disc run-out
Replies: 2
Views: 5320

Disc run-out

My 1980 Darmah SSD rear disk isn't running true. Using a dial gauge I could see around 1.5mm of run-out when measured near the outer edge. So first question - how much is too much ? After inspection I found the disc itself is ok, but the problem is the disc carrier (long story, but this was machined...
by AndyCapp
Sun Mar 02, 2014 3:47 am
Forum: Body, Paint & Rubber Shop
Topic: Darmah tank size
Replies: 4
Views: 6898

Re: Darmah tank size

Problem solved.
A bit of persuasion (ok, a hammer) to open out the base of the tank inside and it now fits. Guess I forgot to take into account
Italian manufacturing practices of the period. Probably no two tanks are exactly the same
by AndyCapp
Sun Mar 02, 2014 12:48 am
Forum: Body, Paint & Rubber Shop
Topic: Darmah tank size
Replies: 4
Views: 6898

Re: Darmah tank size

They look the same. The difference in internal width is very subtle. Length is identical. My tank is about 2cm higher.
It came with standard 900 Darmah Red & White (isn't the shape & white stripe on a 500 quite different?)
I have a photo of the two - is there an easy way to share it ?
by AndyCapp
Sat Mar 01, 2014 11:16 pm
Forum: Body, Paint & Rubber Shop
Topic: Darmah tank size
Replies: 4
Views: 6898

Darmah tank size

My 1980 SSD tank is full of filler under the paint, so I found a good condition Red/White Darmah tank and had it repainted. I tried to fit it yesterday and could not even get the front to fit over the two frames tubes. On comparing the two tanks (oooops, yes, I know I should have done this before pa...
by AndyCapp
Thu Aug 02, 2012 11:12 pm
Forum: Engine & Transmission Shop
Topic: Engine "rattle"
Replies: 16
Views: 7380

Re: Engine "rattle"

There was quite a bit of free play. With the primary gear & clutch still in place I could easily move the crank by hand. I could see and hear the movement. I did check side-to-side clearance between the con rods and con rods to crank webs. It was only 0.10 - I think this is well inside the service l...
by AndyCapp
Mon Jul 02, 2012 11:18 pm
Forum: Engine & Transmission Shop
Topic: Engine "rattle"
Replies: 16
Views: 7380

Re: Engine "rattle"

To Craig in France, yes those are the ones. To wdietz186. When I set the crank up all those years ago, I don't think it mentioned preload in the Hayes manual I was using, so I probably went for zero free-play. I also remember going to my local dealer and looking at his Ducati workshop manual. You co...
by AndyCapp
Mon Jul 02, 2012 7:34 am
Forum: Engine & Transmission Shop
Topic: Engine "rattle"
Replies: 16
Views: 7380

Re: Engine "rattle"

I've just taken the engine out. The l/h side crank (primary drive) shaft had play. I split the cases. The L/H shims on the crank output shaft were eaten up. I also found the remains of at least one more in the sump. The main bearings look fine. Just to be clear - I am talking about the shims inside ...
by AndyCapp
Mon Apr 02, 2012 7:07 am
Forum: Engine & Transmission Shop
Topic: Engine "rattle"
Replies: 16
Views: 7380

Re: Engine "rattle"

I did both heads (off the bike) over winter, so it cannot be that. New guides, valve & rocker shims. Anyway, it's load related, so I think that would rule out
anything valvetrain related ?
It's not very noticeable when cold, but gets louder the hotter the engine is.

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