Search found 71 matches

by Gardner
Thu Feb 29, 2024 6:46 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Desmo Valve Timing
Replies: 14
Views: 276

Re: Desmo Valve Timing

These details are all fixed and the only problem I have is knowing whether I have put the front cylinder head on correctly. (could be any of four camshaft positions where the half-shafts match to allow the head to go on) It can be seen from this that the drive shaft will line up with its mating ton...
by Gardner
Thu Feb 29, 2024 10:22 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Desmo Valve Timing
Replies: 14
Views: 276

Re: Desmo Valve Timing

Do you have the original Bosch ignition?
If you do you have some wire replacing to do or maybe go with a new Sachse ignition.
https://forum.bevelheaven.com/viewtopic.php?f=19&t=771
by Gardner
Sun Feb 25, 2024 6:57 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Desmo Valve Timing
Replies: 14
Views: 276

Re: Desmo Valve Timing

Found a link to a pdf of the same article but this has the diagrams that make it a bit easier to understand.
https://www.ducati.community/attachment ... pdf.72624/
by Gardner
Sat Feb 24, 2024 6:31 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Desmo Valve Timing
Replies: 14
Views: 276

Re: Desmo Valve Timing

If you really want to understand cam timing it would be hard to beat this.
https://www.ducati.community/threads/cam-timing.10995/
by Gardner
Thu Feb 22, 2024 6:50 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Desmo Valve Timing
Replies: 14
Views: 276

Re: Desmo Valve Timing

Afraid I never paid attention to details like valves opening when rotating from all timing marks lined up.
All the gears are keyed to their shafts so if the timing marks are all lined up, that's it.
by Gardner
Mon Feb 19, 2024 7:53 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Desmo Valve Timing
Replies: 14
Views: 276

Re: Desmo Valve Timing

That all sounds right to me.
Rear piston at TDC, front piston on its way down and all the timing marks lined up, turn the crankshaft 6 revolutions and all timing marks lined up again.
by Gardner
Sun Feb 18, 2024 8:24 pm
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Desmo Valve Timing
Replies: 14
Views: 276

Re: Desmo Valve Timing

I was working on posting this when the forum went missing. Not written by me but I saved it from a forum and have been using it. BEVEL DRIVE CAMSHAFT TIMING GEARS AND ALIGNMENT MARKS August 1980 By Peter Shearman The timing marks on a bevel drive engine, are only all lined up once every six engine r...
by Gardner
Thu Jul 13, 2023 8:34 pm
Forum: Engine & Transmission Shop
Topic: Better Oil Flow to the Sump, And filter ALL of the oil.
Replies: 12
Views: 20422

Re: Better Oil Flow to the Sump, And filter ALL of the oil.

3 years plus of nuthin but crickets chirping, its time for an update! By the end of the riding season 2019 I was having some hip pain that was making riding uncomfortable and just walking was painful. Physical therapy didn't help so I was just getting used to living with the pain. Spring of 2020 I d...
by Gardner
Wed Dec 04, 2019 7:46 pm
Forum: Engine & Transmission Shop
Topic: Trouble mating the 860 crankcase halves
Replies: 3
Views: 8662

Re: Trouble mating the 860 crankcase halves

The kickstart shaft has to be rotated 45° while sliding cases together for the ratchet lug to engage the stop. It's easier to check crank end play with just the crank in the cases. Check that your bearings slide on the crank without being too tight. They also have to slide into the steel case housin...
by Gardner
Sun Nov 24, 2019 6:54 pm
Forum: Engine & Transmission Shop
Topic: Better Oil Flow to the Sump, And filter ALL of the oil.
Replies: 12
Views: 20422

Re: Better Oil Flow to the Sump, And filter ALL of the oil.

Temperature reached 50° today so I went for a 30 mile ride. Probably one of the last for this year. Total on the engine since rebuild and start up back in May is 6861 nearly trouble free miles. Had some oil push past the head o-rings that was fixed by moving the head oil restrictors and the dry clut...
by Gardner
Tue Oct 15, 2019 6:39 pm
Forum: Bevel Head Twins Photo Gallery
Topic: Rotor Rust Dust
Replies: 8
Views: 12829

Re: Rotor Rust Dust

I agree, big mistake. :( Girlfriend has a 71 Commando that I like to tear around on.
They're a bit more common than MHR's so you could maybe find another.
by Gardner
Tue Oct 15, 2019 5:49 am
Forum: Wheel, Brake & Tyre Shop
Topic: Check your pins and pads
Replies: 1
Views: 7740

Check your pins and pads

This last spring I noticed one of the caliper pins on the SS was hanging out a bit more than it should. I popped the cover off and found that the small center pin was rattling around on top of the rotor and pads! :shock: Checked the fronts and found a pad had sheared off the steel backing plate but ...
by Gardner
Tue Oct 15, 2019 5:23 am
Forum: Bevel Head Twins Photo Gallery
Topic: Rotor Rust Dust
Replies: 8
Views: 12829

Re: Rotor Rust Dust

Waking up and seeing that every morning would brighten my day! Do you have a really low watt bulb in the lamp with just the right glow for
the long cold winter mood lighting?
by Gardner
Sat Oct 12, 2019 7:01 pm
Forum: Bevel Head Twins Photo Gallery
Topic: Rotor Rust Dust
Replies: 8
Views: 12829

Re: Rotor Rust Dust

Yeah, not many curvy roads in Iowa where you can lean it over, or on the Interstate for that matter! I think that front Avon has over 12,000 miles on it now from the last 2 or 3 years, can see some cracks down in the treads. My bikes are indoor temp controlled also, that hot and cold with humidity i...
by Gardner
Thu Oct 10, 2019 7:45 pm
Forum: Bevel Head Twins Photo Gallery
Topic: Rotor Rust Dust
Replies: 8
Views: 12829

Rotor Rust Dust

Rode to the Barber Vintage Festival last weekend, the bike sat out in the rain one night and the rotors rusted. The first time you use the brakes a cloud of rust dust flies off and the result made for a cool pic I thought. https://i.imgur.com/dSjEAaf.jpg Was a good ride except for being caught in a ...

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