Recent Posts

Pages: 1 [2] 3 4 ... 10
11
BMW Technical Q&A, Primarily R65 / Stuck clutch
« Last post by Funkid2! on August 26, 2023, 10:11:07 PM »
My clutch gets stuck sitting. Dampness in the garage seems to be the culprit.
So I am going to try some damp proof paint . A dehumidifier. And park on a rubber mat.Also  has anyone used an indoor bike bubble?
 ???
12
BMW Technical Q&A, Primarily R65 / Re: Roll-on / roll-off bucking or lurching
« Last post by georgesgiralt on August 26, 2023, 04:21:37 AM »
Hello,
If you bike is fitted with, check the spring coupling in the driveshaft. The spring get weaker and the bell housing has burrs the nut has to bypass with either a noise or a strange effect in the drive.
You can't check it without the engine power applied because the spring is very strong. Only way is to dismantle and check the components.
At your mileage, I suggest buying the new parts and replacing them.
Beware, the spring is very tough and you need a proper compression jig to remove the retaining clip. Use a pipe wrench to present the new spring when refitting and a screwdriver for the final push in place. IT is a funny thing, so not too much coffee before trying it....
Just my 2˘

P.S.: while you are at it, check the joint for play and wear. IT would be funny to reassemble everything and have to dismantle again in a few weeks time ....
13
BMW Technical Q&A, Primarily R65 / Re: Roll-on / roll-off bucking or lurching
« Last post by Barry on August 26, 2023, 03:52:38 AM »
Someone said it is “drivetrain lash.” But when I put it on the centerstand, in gear, and rotate the rear wheel it only turns two inches measured at the tread. Internet postings, for various makes of motorcycle, indicate that this isn't excessive. What say you?

Some backlash is normal.  What gear were you in ?    It occurred to me that measuring in 5th gear would be more realistic.

I've just measured mine at 27,500 miles and I get 1" in 1st gear and 2" in 5th gear.
14
Trading Post / Re: For Sale: 1983 R65 - US
« Last post by Rudi77 on August 25, 2023, 02:26:45 PM »
message sent.
15
General Announcements / Re: New member
« Last post by Rudi77 on August 25, 2023, 02:05:59 PM »
" i have painted it bright yellow for conspicuousness" --- you really need to post a picture! :)
17
BMW Technical Q&A, Primarily R65 / Re: Roll-on / roll-off bucking or lurching
« Last post by Bob_Roller on August 25, 2023, 12:27:21 PM »
Hi Steve !!
Welcome to the site .
You have  an unusual issue, never seen it here before .

I did a search online there's a few areas you can check . 


https://thingsmoto.com/motorcycles/jerk/#:~:text=A%20motorcycle%20can%20jerk%20under%20many%20circumstances%20such,engine%2C%20clutch%2C%20transmission%20and%20final%20drive%2C%20and%20electrical.

Here's one thing that may be unique to BMW's there is a slip joint in the driveshaft, kind of a spring loaded ball and socket coupling, parts #4 nd 5 .

https://www.realoem.com/bmw/enUS/showparts?id=0363-USA-03-1979-248-BMW-R65&diagId=23_0257
18
BMW Technical Q&A, Primarily R65 / Roll-on / roll-off bucking or lurching
« Last post by Steve on August 25, 2023, 09:20:53 AM »
My 1979 R65 now has 175,000 miles on it. I do my own maintenance, so I am thrilled to to discover this club dedicated to just that model! Perhaps you can help me with an annoyance.

I’m quite sure my bike did not originally do this, and that it developed slowly over time. Say I am coasting in gear with the throttle closed. It can be in any gear at any RPM but it is most annoying at low speed. When I crack the throttle open any amount the bike lunges forward. When I close it again it decelerates in reciprocal manner, with a jolting suddenness. Thus I call it the “roll-on / roll-off bucking or lurching”. It happens 100% of the time. There is no clunk or noise. It is severe enough that when rounding a corner at low speed it disturbs my balance.

I have twice completely rebuilt the carburetors and replaced the throttle cables. This did not help. The idle circuit is clear of obstruction, so it’s not that. Someone said it is “drivetrain lash.” But when I put it on the centerstand, in gear, and rotate the rear wheel it only turns two inches measured at the tread. Internet postings, for various makes of motorcycle, indicate that this isn't excessive. What say you?
19
General Announcements / New member
« Last post by Steve on August 25, 2023, 09:07:59 AM »
I have put 170,000 wonderful miles on my 1979 R65. It has a Hannigan fairing, Krauser bags, custom solo seat, fork brace, etc. Most oddly, i have painted it bright yellow for conspicuousness! While not a mechanic I have accumulated a lot of knowledge about this machine and am still in love with it. I use it for day-to-day transportation and a week-long vacation every summer. I will now post at "BMW Technical Q&A, Primarily R65"  a question I hope to get answers to.
20
General Announcements / New Member
« Last post by Rudi77 on August 24, 2023, 07:49:37 PM »
Hi, New member from Illinois. Been looking for a nice old airhead and just found a non-running R65, we'll see how that goes :). Had a lot of bikes over the past 35+ years but first BMW.
Pages: 1 [2] 3 4 ... 10