Search found 1001 matches

by gspd
Mon Jul 07, 2025 5:39 pm
Forum: Post 1970 Airheads
Topic: '78 R100s kill switch fried
Replies: 14
Views: 295

Re: '78 R100s kill switch fried

Is there any possibility that the replacement battery has the positive and negative poles located opposite of the other battery? I've seen seemingly identical batteries with opposite pole locations. Not sure what hooking one up backwards might cause, maybe Rob F could enlighten us on what would happ...
by gspd
Mon Jul 07, 2025 9:09 am
Forum: Post 1970 Airheads
Topic: '78 R100s kill switch fried
Replies: 14
Views: 295

Re: '78 R100s kill switch fried

oskkar wrote: Sat Jul 05, 2025 5:57 pm I just installed a new 12v30ah battery on my '78 r100s and immediately the handlebar kill/run switch smoked and burnt out.
Immediately when you connected the battery, or immediately when you turned on the ignition?
Was the bike running before you replaced the battery?
by gspd
Tue May 27, 2025 6:36 am
Forum: Post 1970 Airheads
Topic: Engine Housing Repair
Replies: 4
Views: 704

Re: Engine Housing Repair

Ya, what Rob F said +++ You have no speedo cable, so probably no speedo or a GPS one. but that's not your problem, right? I've seen a lot of people use a cell phone GPS app as a speedo. Works perfectly, but won't pass a DMV certification. Function: As far as gearbox venting goes, drill a small hole ...
by gspd
Wed May 21, 2025 10:09 pm
Forum: Post 1970 Airheads
Topic: AIRHEAD question
Replies: 3
Views: 639

AIRHEAD question

Just wondering...When exactly was the term 'AIRHEAD' coined and by who. We never referred to them as airheads back in the day. I'm pretty sure it was invented when a name was needed to distinguish them from the newer 'oilheads' but i"m curious about who actually invented the name. Also wonderin...
by gspd
Wed May 21, 2025 10:01 pm
Forum: Post 1970 Airheads
Topic: R60/5 Final Drive Backlash
Replies: 4
Views: 859

Re: R60/5 Final Drive Backlash

FYI - With the wheel installed, check the driveline backlash with the transmission in first gear. You should be able to 'klunk' the wheel maybe an inch or so back and forth. In fifth (top) gear it will be 2 to 3 times that amount. This is normal for any manual transmission bike or car. As far as the...
by gspd
Tue May 20, 2025 10:41 pm
Forum: Post 1970 Airheads
Topic: R60/5 Final Drive Backlash
Replies: 4
Views: 859

Re: R60/5 Final Drive Backlash

I would just check it again after another 48,0000 miles.
by gspd
Thu May 15, 2025 8:53 am
Forum: Post 1970 Airheads
Topic: Measuring fork slider wear .
Replies: 2
Views: 1290

Re: Measuring fork slider wear .

I was wondering if some of the noise was being caused by worn fork sliders. I don’t know a way to measure the diameters of the internal bearings or other way to ascertain if they worn. The age old method of 'measuring' is rocking the front axle back and forth with the wheel in the air, with the spr...
by gspd
Sat May 10, 2025 11:04 am
Forum: Post 1970 Airheads
Topic: A leaking oil filter cover.
Replies: 57
Views: 18625

Re: A leaking oil filter cover.

JohnT wrote: Sat May 10, 2025 10:54 am Tell me more . Have just returned from a 40 mile ride and all seems well.
Was your oil cooler warm after the ride?
by gspd
Sat May 10, 2025 8:41 am
Forum: Post 1970 Airheads
Topic: A leaking oil filter cover.
Replies: 57
Views: 18625

Re: A leaking oil filter cover.

WRONG FILTER!!
DO NOT START THE ENGINE!!! replace it right away with the one pictured.
part # 11 42 1 337 575
by gspd
Fri May 09, 2025 10:09 pm
Forum: Post 1970 Airheads
Topic: Odometer rolled over again
Replies: 9
Views: 3896

GSPD enters the 21st century...

So, my old speedo was now up around 20,000km and the needle started bouncing around (again). Took it apart, fixed the bouncing needle (again) and I tried to calibrate it as best I could with strategic needle placement. I did some speed checking with a temporary GPS speedo hooked up. It read dead on ...