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by Craig in France
Sun May 19, 2019 3:00 am
Forum: Wheel, Brake & Tyre Shop
Topic: Dot on new tire lightest spot?
Replies: 3
Views: 210

Re: Dot on new tire lightest spot?

Many - most? - tires these days don't have a dot, Richard. As per Gardner, just balance carefully after fitting.
by Craig in France
Sun May 12, 2019 3:07 am
Forum: Carburettor & Fuel System Shop
Topic: 81MHR idle and run issues: slide wear?!
Replies: 11
Views: 308

Re: 81MHR idle and run issues: slide wear?!

1. See the narrative below for how to replace the HT leads in the coil. Alternatively, you might try to buy a second-hand one. They were used on (for example) the contemporary Suzuki GS400 models (I think the larger capacity GS models used a similar but twin output coil). Couple on ebay at the mo' ....
by Craig in France
Sat May 11, 2019 5:22 am
Forum: Carburettor & Fuel System Shop
Topic: 81MHR idle and run issues: slide wear?!
Replies: 11
Views: 308

Re: 81MHR idle and run issues: slide wear?!

Another thought ...

You say you checked the pick-up wiring for continuity. Have you done the same for the cables between the Bosch boxes and the coils?

And don't forget to check the ground connections!
by Craig in France
Sat May 11, 2019 5:12 am
Forum: Carburettor & Fuel System Shop
Topic: 81MHR idle and run issues: slide wear?!
Replies: 11
Views: 308

Re: 81MHR idle and run issues: slide wear?!

1. If it really IS intermittent firing that you’re getting, then your suspicions should trend towards ignition. Carb problems tend to exhibit themselves as ‘constant’ problems - classically, a refusal to idle. 2. I can’t comment on your diagnostic technique for slide wear - I don’t know whether it w...
by Craig in France
Wed May 08, 2019 12:57 am
Forum: Carburettor & Fuel System Shop
Topic: Ball Bearing Blocked Idle Jet Airway
Replies: 5
Views: 289

Re: Ball Bearing Blocked Idle Jet Airway

Regarding float height, the needles have a spring to decrease vibrations hammering the needles. I've read the "sit the carb on the side and measure 18mm. But is this without depressing the spring? I assume I will get the needle to seat, then lay the carb horizontal and adjust the level so the sprun...
by Craig in France
Sun May 05, 2019 11:32 pm
Forum: Engine & Transmission Shop
Topic: Clutch Grabs Violently on Fresh Engine
Replies: 7
Views: 267

Re: Clutch Grabs Violently on Fresh Engine

Well, it's basically the springs that control the clutch engagement, so that's where I'd look. Also, you say you've fitted a competition clutch (why?), and that probably explains things a bit too. If you gave it more revs, it probably wouldn't stall. But it will send you down your driveway like a bu...
by Craig in France
Fri May 03, 2019 8:10 am
Forum: Carburettor & Fuel System Shop
Topic: Ball Bearing Blocked Idle Jet Airway
Replies: 5
Views: 289

Re: Ball Bearing Blocked Idle Jet Airway

Hi and welcome to the Forum - I see this is your first post. 1. Flooding. Change the needle valves - I see 'valves' in the plural 'cos you might just as well do the one in the other carb at the same time. They operate under very light pressure and modern fuels are unkind to the tips. Result: the val...
by Craig in France
Sun Apr 21, 2019 9:21 am
Forum: Wheel, Brake & Tyre Shop
Topic: Can't get the rear Brembo master cylinder to prime
Replies: 8
Views: 651

Re: Can't get the rear Brembo master cylinder to prime

Initially the front piston was smooth but now it feels rough. <snip> At least I have working front brakes but I don't like the feel of the lever at all. Ok, you need to be clearer. Is it the PISTON that feels rough, or is it the LEVER? If the later, have you greased the pivot point where the lever ...
by Craig in France
Sun Apr 21, 2019 9:10 am
Forum: Wheel, Brake & Tyre Shop
Topic: Can't get the rear Brembo master cylinder to prime
Replies: 8
Views: 651

Re: Can't get the rear Brembo master cylinder to prime

... and I can't get the rear cylinder to prime with fluid. Not quite sure what you mean when you say 'prime'. I mean, normally all you have to do is to fill the reservoir, then action the lever so that fluid passes via the transfer port into the master cylinder and then down the line (with the disp...
by Craig in France
Sat Mar 23, 2019 12:55 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Primary gear alignment.
Replies: 6
Views: 673

Re: Primary gear alignment.

Andy, my advice would be to DEFINITELY change the gear return spring, regardless of what it looks like. Just make sure you get one from a reliable supplier (preferably a better supplier than the one Ducati used ... :-D :doh: )

And me, I'd change the sprag as well ;)
by Craig in France
Wed Mar 20, 2019 1:01 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Primary gear alignment.
Replies: 6
Views: 673

Re: Primary gear alignment.

When I noticed something similar on my 450, Nigel Lacey told me to stop worrying ... ;)
by Craig in France
Tue Feb 19, 2019 12:50 am
Forum: Squarecase Early 860/900 Crossover Gearchange Engines > 860/900 GT
Topic: 860GT Right Side Cover...stuck??
Replies: 10
Views: 942

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

There is no head left on the hex but, it's completely gone. Ah! Do you mean that the head of the bolt is "completely gone"? Well, that can only be the result of someone who has already has drilled the head off, trying and failing to remove the cover. In that case (and as per Ducadini), it ain't the...
by Craig in France
Mon Feb 18, 2019 9:31 am
Forum: Squarecase Early 860/900 Crossover Gearchange Engines > 860/900 GT
Topic: 860GT Right Side Cover...stuck??
Replies: 10
Views: 942

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

As others: DON'T whack the case any harder. It won't do any good and may do damage. If the bolt is still in there, you may ultimately have to drill its head off. Which is time consuming and needs to be done carefully.* But, if it's just the socket part of the bolt that is damaged, there is another w...
by Craig in France
Tue Feb 12, 2019 9:44 am
Forum: Squarecase BOSCH Ignition Engines > SD, SSD Darmah, late 900 SS & 900 GTS
Topic: Lower bevel gear and spindle
Replies: 8
Views: 777

Re: Lower bevel gear and spindle

Let's take the spare-parts book of MHR on THE site :-D. TAV9 shows the complete bevel factory.<snip> Yeah, agree: always best to refer to parts by their numbers rather than just a description ... :) The parts in red are the ones that ducadini is talking about. Me, I thought you meant the 'lower bev...

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