Search found 694 matches

by wdietz186
Tue Apr 09, 2019 6:41 pm
Forum: Engine & Transmission Shop
Topic: Clutch working way to separate on a 900 square case
Replies: 5
Views: 88

Re: Clutch working way to separate on a 900 square case

Somewhere in the dark recesses of my memory the figure of approx. 2mm seems to rattle around. Make sure the plates are completely un stuck, which will probably require it to be run/used and warm.
by wdietz186
Tue Mar 26, 2019 4:37 pm
Forum: Body, Paint & Rubber Shop
Topic: Front Tyre Clearance with a wider 18x110 tyre?
Replies: 4
Views: 406

Re: Front Tyre Clearance with a wider 18x110 tyre?

The 110/80 is a touch too wide for the SS fender. On my old 900SS racer I had to make some external brackets that bolted to the fender from the top and I cut the mounting ears off of the fender. I did this mostly to be able to run slicks back in the day. Air-Tech make a bunch of different fenders, t...
by wdietz186
Tue Mar 19, 2019 7:27 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Primary gear alignment.
Replies: 6
Views: 242

Re: Primary gear alignment.

The gears should be pretty well lined up, the engine gear is fixed due to being mounted on a taper. There should be a thickish washer behind the clutch basket, between the case bearing and the bearings in the basket. You might have an issue with the bearings in the basket. There should be a spacer b...
by wdietz186
Sun Mar 10, 2019 3:09 pm
Forum: Electrical and Wiring Shop
Topic: Ducati 750 GT electronic Tachometer
Replies: 1
Views: 161

Re: Ducati 750 GT electronic Tachometer

The tach would be triggered off the neg. side of the coil. The electric tachs are known for not working however, so the question may be moot.
by wdietz186
Sat Mar 02, 2019 7:11 pm
Forum: Squarecase Early 860/900 Crossover Gearchange Engines > 860/900 GT
Topic: 75 860GT Timing Question
Replies: 14
Views: 1070

Re: 75 860GT Timing Question

On the horiz. cyl. the intake valve will be partly open when in the correct position to install. Keep turning the bevel shaft until the dots line up. A light helps if the dot on the cam gear is under the washer. I think they only line up every four revolutions.
by wdietz186
Tue Feb 19, 2019 4:19 pm
Forum: Squarecase Early 860/900 Crossover Gearchange Engines > 860/900 GT
Topic: 860GT Right Side Cover...stuck??
Replies: 10
Views: 469

Re: 860GT Right Side Cover...stuck??

If the hex is just fully rounded, sometimes a Torx driver can be hammered into the hole so the flutes of the bit can grip the hole. I think a T25 or 30 is about the right size. Long ones are usually available at your local Harbor Freight or a decent parts store. If that proves fruitless get a good s...
by wdietz186
Mon Feb 18, 2019 5:39 pm
Forum: Squarecase Early 860/900 Crossover Gearchange Engines > 860/900 GT
Topic: 860GT Right Side Cover...stuck??
Replies: 10
Views: 469

Re: 860GT Right Side Cover...stuck??

Looking in the hole, can you see the edge of the cover around the shaft of the bolt? The shaft of the bolt is 6mm and the hole in the cover is approx. 7mm, look into the other hole to get the idea. If not you probably have a badly rounded hex and the head of the bolt is still there. Give Craig's sol...
by wdietz186
Sun Feb 17, 2019 5:25 pm
Forum: Squarecase Early 860/900 Crossover Gearchange Engines > 860/900 GT
Topic: 860GT Right Side Cover...stuck??
Replies: 10
Views: 469

Re: 860GT Right Side Cover...stuck??

Sure it is snapped off and not just badly rounded or has been drilled but not enough to remove the head? Smack it sharply around the periphery at the joint with a soft faced hammer, you just want to get things to vibrate to break the seal. Unless someone epoxied it on! If it is a broken bolt and it ...
by wdietz186
Tue Feb 12, 2019 10:47 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Lower bevel gear and spindle
Replies: 8
Views: 407

Re: Lower bevel gear and spindle

To clarify, Per Craigs parts diagram. The gear[25] and the driven side of the bevel assembly[17] are keyed together so they don't turn independently. That pair of gears, as per all I have had my hands on are a slip fit on the spindle[16]. Yes it is mounted into a ball bearing on the support plate an...
by wdietz186
Mon Feb 11, 2019 8:57 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Lower bevel gear and spindle
Replies: 8
Views: 407

Re: Lower bevel gear and spindle

The gears should turn on the spindles that support them. I am assuming the gears you are talking about are the distribution gears that are driven by the crank and in turn drive the tower shafts and the spindles go between the engine case and the support plate. The spindles should be free to turn ins...
by wdietz186
Wed Feb 06, 2019 6:15 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Plated cylinders
Replies: 3
Views: 281

Re: Plated cylinders

I don't know if there is any advantage to plating an iron sleeve, all of the plated cylinders I've ever seen have been aluminum. I don't think heat transfer would be improved as the sleeve is still shrunk into the cylinder barrel. The bore would certainly last longer but I don't think anyone uses th...
by wdietz186
Sat Jan 26, 2019 8:18 am
Forum: Body, Paint & Rubber Shop
Topic: Taillight ???... for Mike Hailwood TT Replica, anybody knows ?
Replies: 9
Views: 610

Re: Taillight ???... for Mike Hailwood TT Replica, anybody knows ?

I would look at Fiat or Lancia tail/marker lamps as it is unlikely Ducati went too far afield to source a lens for a limited production model.
by wdietz186
Sat Jan 19, 2019 3:21 pm
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: central bevel gear extractor
Replies: 11
Views: 1400

Re: central bevel gear extractor

Is there play in the dist. drive gear or the tower shaft gears? That may be the way it left the factory. Dropping the gear down [if it can be done] may bind them up and raising the tower gears would introduce too much play. Is it quiet when running? To get the center bevel out it looks like the cran...
by wdietz186
Sat Jan 19, 2019 7:11 am
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: central bevel gear extractor
Replies: 11
Views: 1400

Re: central bevel gear extractor

When checking the mesh you do need to check it at the ground areas on the gears, it's a flat area that the factory did when the gears were matched. I had to replace one of the cyl. drive gears once, it is a very time consuming operation!
by wdietz186
Sat Jan 12, 2019 12:49 pm
Forum: Wheel, Brake & Tyre Shop
Topic: 860GT drum brake rear wheel spoke question
Replies: 10
Views: 562

Re: 860GT drum brake rear wheel spoke question

I suspect the 85 deg. angle spokes enter the holes from the inside [between the flanges] so they don't rub the side of the flange when they are in position. The 90's probably should enter the flange from the outside as the pull to the rim is straighter. I did re lace one once, about 35 yrs. ago so m...

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