Search found 682 matches

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: 107

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: 107

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: 166

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: 116

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: 230

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: 988

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: 924

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: 875

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 ...
by wdietz186
Sun Nov 25, 2018 7:40 pm
Forum: Electrical and Wiring Shop
Topic: Neutral switch paradox
Replies: 15
Views: 1224

Re: Neutral switch paradox

Other than the squarecase cover on the roundcase! The back cover might fit, don't know. I seem to remember my 750 harness had some dead ends in it, might have been an 860 loom. You'll have to take the housing apart to see if the lamp is connected to anything. I ended up rewiring the bike with real w...
by wdietz186
Sun Nov 18, 2018 10:05 am
Forum: Carburettor & Fuel System Shop
Topic: Overflowing Carb
Replies: 20
Views: 2004

Re: Overflowing Carb

The ignition will transform the machine, idle,smooth accel, you'll think you bought a new bike!
by wdietz186
Tue Nov 06, 2018 10:43 am
Forum: Engine & Transmission Shop
Topic: Lower bevel gear spindle shimming - Darmah
Replies: 15
Views: 869

Re: Lower bevel gear spindle shimming - Darmah

The shims on the bevel support plate are generally between the the gear and the support plate. Could be shim[s] between the gear and the spindle would be needed to keep the gear from too deep engagement with the upper bevel gear. Has the support plate been off before to your knowledge? It's very eas...
by wdietz186
Mon Sep 17, 2018 7:42 pm
Forum: Engine & Transmission Shop
Topic: completely remove starter assembly flywheel etc...
Replies: 15
Views: 1091

Re: completely remove starter assembly flywheel etc...

Yes, you can run with just the flywheel. You really don't even need the flywheel but your idle quality may suffer.
by wdietz186
Thu Sep 13, 2018 6:51 pm
Forum: Carburettor & Fuel System Shop
Topic: Overflowing Carb
Replies: 20
Views: 2004

Re: Overflowing Carb

It's unlikely the grit came in through the air filters, most likely it's from the tank. Very fine rust particles can make their way through the carb screens and will collect in the float bowls. The thick oily stuff is the remnants of whatever fuel was in it 10 or so years ago. Sounds like it is time...
by wdietz186
Tue Sep 04, 2018 4:28 pm
Forum: Carburettor & Fuel System Shop
Topic: 900 Darmah sputtering around 5000 rpm
Replies: 9
Views: 1020

Re: 900 Darmah sputtering around 5000 rpm

It would be prudent to remove it before tweaking it.
by wdietz186
Sun Sep 02, 2018 7:55 am
Forum: Carburettor & Fuel System Shop
Topic: 900 Darmah sputtering around 5000 rpm
Replies: 9
Views: 1020

Re: 900 Darmah sputtering around 5000 rpm

You need to check them with the float needle just closed and not compressing the little springy thing on the float needle. The float itself should move freely on the spindle. Scum can form on the spindle if the carbs were stored with fuel in the float bowls and it evaporated over time.

Go to advanced search