Search found 689 matches

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: 9
Views: 100

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: 9
Views: 100

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: 9
Views: 100

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: 7
Views: 119

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: 7
Views: 119

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: 88

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: 362

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: 594

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: 594

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: 312

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...
by wdietz186
Thu Jan 10, 2019 5:50 am
Forum: Carburettor & Fuel System Shop
Topic: Darmah on aviation fuel
Replies: 2
Views: 236

Re: Darmah on aviation fuel

If you have it and don't mind the cost, go ahead and use it. The Darmah doesn't need octane that high and it won't really give you that rocket fuel feeling but it is probably of a more consistent quality and cleaner.
by wdietz186
Sun Dec 30, 2018 8:10 am
Forum: Carburettor & Fuel System Shop
Topic: 1974 750 GT carb question
Replies: 7
Views: 349

Re: 1974 750 GT carb question

The ignition is likely a Dyna unit, a very reliable setup. You could have a sticking/gummed up advance mechanism, see if the points cam moves freely. With the Dyna you will have a black cap on the shaft retained by a set screw. On my 750 I've found that it wants to be on the rich side with the idle ...
by wdietz186
Thu Nov 29, 2018 6:29 pm
Forum: Wheel, Brake & Tyre Shop
Topic: no one run Pirelli Phantoms?
Replies: 6
Views: 1112

Re: no one run Pirelli Phantoms?

You can run them tubeless But! The rims lack the inner hump that keeps the bead seated and stable on the rim and there is a danger of sudden deflation if something happens to unseat the bead while riding. Some people go tubeless and haven't had any issues but the risk isn't worth it to me.
by wdietz186
Thu Nov 29, 2018 6:18 pm
Forum: Engine & Transmission Shop
Topic: Cylinder base gasket - 900 bevels.
Replies: 6
Views: 1095

Re: Cylinder base gasket - 900 bevels.

I've used aluminum base gaskets on my bevel,they work just fine. I think I got them from Reno many years ago. They might have been something he had made or amkt. stuff from Italy. I generally use a smear of Hylomar,Hi Tack or Coppercoat on them for insurance and haven't had any leakage issues.
by wdietz186
Tue Nov 27, 2018 7:23 am
Forum: Single Cylinder Non Bevel Drive Engines > Cucciolo, Scooters, Overhead Valve, 2-Stroke
Topic: Bronco 98 v. 125 Pushrods
Replies: 4
Views: 1296

Re: Bronco 98 v. 125 Pushrods

Looks like the long ones are what you need. I would assemble it with the longer pushrods, then turn it over slowly and see if there is any interference/binding. It's really not rocket surgery! I had the dubious honor of assembling a '54 MV Agusta OHC single that was a pile of parts in a box without ...

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