Search found 1798 matches

by Airbear
Wed Sep 20, 2023 7:50 pm
Forum: Post 1970 Airheads
Topic: Starter won't engage - R90/6
Replies: 9
Views: 907

Re: Starter won't engage - R90/6

Thanks Rob, this is a great list to start troubleshooting. Bike is a 74, produced late '73, so of the first /6. So no clutch switch, only the neutral switch. No clicks or any other sounds when hitting the starter button. It will be some days before I can get round to start troubleshooting, will get...
by Airbear
Sun Aug 27, 2023 7:15 pm
Forum: Post 1970 Airheads
Topic: Pre load Gear changing
Replies: 20
Views: 2180

Re: Pre load Gear changing

Winding up to high revs in the low gears is where I get the clunky and potentially destructive changes. My approach is to change from first to second at quite low speed, usually within 25 metres from take off. Second to third can be more difficult, especially when accelerating uphill after a hairpin...
by Airbear
Fri Aug 11, 2023 12:18 am
Forum: Post 1970 Airheads
Topic: Adjustable Clutch & Front Brake Levers
Replies: 11
Views: 1223

Re: Adjustable Clutch & Front Brake Levers

Phil Yes, ok, I get it. I am just so enthusiastic about the light and precise controls on my old dear (it's taken 20 years to get there) that I want to shout about it from the virtual rooftops. Re the UTMC, I wonder if anyone has had one sleeved down to 13mm. Can't be too hard, I imagine. You seem t...
by Airbear
Sun Aug 06, 2023 6:56 pm
Forum: Post 1970 Airheads
Topic: Adjustable Clutch & Front Brake Levers
Replies: 11
Views: 1223

Re: Adjustable Clutch & Front Brake Levers

Yes Kurt, Phil’s request was pretty clear but he is an old fart like me and probably has hands that have been over used and abused like mine, so I thought it worthwhile to mention my solution. Lessening the effort required to pull in those levers and shifting the engagement points so they are closer...
by Airbear
Sat Aug 05, 2023 6:49 pm
Forum: Post 1970 Airheads
Topic: Adjustable Clutch & Front Brake Levers
Replies: 11
Views: 1223

Re: Adjustable Clutch & Front Brake Levers

Phil, there are work-around solutions. The UTMC is a horrible thing - squeezing the brake lever feels like trying to crush a lump of wood with little result. A bar mounted 13mm MC from a later model or aftermarket makes a huge difference to braking force and the engagement is closer to the grip. The...
by Airbear
Sun May 07, 2023 6:47 pm
Forum: Post 1970 Airheads
Topic: Idiot v. Motorbikes, Rounds 3, 4, and 5
Replies: 175
Views: 40680

Re: Idiot v. Motorbikes, Rounds 3, 4, and 5

melville wrote: Sun May 07, 2023 5:39 pm ... But I am getting to finishing the current pillion audition--I quite like the gal and my spare gear almost fits her.
...
It is Spring in the "Up Over" hemisphere, when a young man's fancy turns to auditioning a new pillion. So romantic - well done, Mel.
by Airbear
Tue Feb 14, 2023 11:04 pm
Forum: Post 1970 Airheads
Topic: Master Cylinder Rebuild
Replies: 7
Views: 494

Re: Master Cylinder Rebuild

I'll add to Rob's advice above that replacing just the throttle tube and cam gear may not be sufficient to give a smooth and snappy throttle since the 'axle' in the housing and the locating lug in the top cap can also wear quite badly. I replaced the tube and cam in mine and still had a horrible not...
by Airbear
Thu Feb 09, 2023 3:59 pm
Forum: Post 1970 Airheads
Topic: R80/7 Rear Main Seal Leak
Replies: 23
Views: 2432

Re: R80/7 Rear Main Seal Leak

Phil, here's a simple tool that will pull the RMS to its rightful place: RMS.jpg Thanks Charlie, how thick did you make it? I think it's 16mm MDF. Doesn't matter much, anything that is stiff enough would work. I don't recall the thread size. Take one of the bolts to your favourite fastener supplier...
by Airbear
Tue Feb 07, 2023 4:57 pm
Forum: Post 1970 Airheads
Topic: R80/7 Rear Main Seal Leak
Replies: 23
Views: 2432

Re: R80/7 Rear Main Seal Leak

Phil, here's a simple tool that will pull the RMS to its rightful place:

RMS.jpg
RMS.jpg (83.86 KiB) Viewed 943 times
by Airbear
Mon Oct 17, 2022 7:09 pm
Forum: Post 1970 Airheads
Topic: Hot grips, install a relay, winter's coming!
Replies: 19
Views: 1078

Re: Hot grips, install a relay, winter's coming!

Thanks to Rob for providing the theory in an easily digestible form, though I'll probably forget it all before the end of year exam.