login
- +

BMW Einzylinder-Forum

Bitte loggen sie sich ein oder registrieren sie sich.

Einloggen mit Benutzername, Passwort und Sitzungslänge
Erweiterte Suche  

Autor Thema: R 35 gearbox  (Gelesen 599 mal)

0 Mitglieder und 1 Gast betrachten dieses Thema.

cwf

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 11
  • I love BMW-Einzylinder
    • W60EU
    • London
    • UK
  • Mitglied seit: 22/11/2021
    Years
R 35 gearbox
« am: 22 November 2021, 19:32:10 »

Hello, I have an R 35 in bits and, maybe one day? Anyhow, one of the first steps will be to clean and check the gearbox.  I think the first step is the big bronze bush on the clutch side, I presume it's an interference fit. I have two gearboxes and the one I won't use has marks where someone has tried to disassemble it, using a flat screwdriver to drive out the bush.
Does anyone know how hot I can heat the box, so as not to cause any damage? And where can I apply pressure to drive the bush out?
Many thanks, Charlie.
Gespeichert

BMW Einzylinder-Forum

R 35 gearbox
« am: 22 November 2021, 19:32:10 »

Herculestom

  • Meister-Schrauber
  • ****
  • Karma: 9
  • Offline
  • Beiträge: 684
    • 1441
    • Heidelberg
    • Gauteng
    • South Africa
  • Mitglied seit: 18/03/2014
    YearsYearsYearsYearsYearsYearsYearsYears
Re: R 35 gearbox
« Antwort #1 am: 23 November 2021, 04:58:42 »

Hi Charlie,

suggest you put that thing into the oven of your wife. She'll love you for this. 120 degrees.

Cheers
Tom
Gespeichert

cwf

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 11
  • I love BMW-Einzylinder
    • W60EU
    • London
    • UK
  • Mitglied seit: 22/11/2021
    Years
Re: R 35 gearbox
« Antwort #2 am: 23 November 2021, 11:47:58 »

That's fine : in this house I do the cooking, she goes out to work - the joys of being retired.

Thanks, Charlie.
Gespeichert

OBS

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 45
  • Ich mag alle alten Moppeds
    • 64686
    • Lautertal
    • Hessen
    • Deutschland
  • Mitglied seit: 31/03/2021
    Years
Re: R 35 gearbox
« Antwort #3 am: 23 November 2021, 19:24:43 »

I also had this condition for 2 years. Now my wife is also at home.
For cleaning the parts, the dishwasher is great.
Do it.
Gespeichert
Der Schmied braucht Hammer und Computer

Herculestom

  • Meister-Schrauber
  • ****
  • Karma: 9
  • Offline
  • Beiträge: 684
    • 1441
    • Heidelberg
    • Gauteng
    • South Africa
  • Mitglied seit: 18/03/2014
    YearsYearsYearsYearsYearsYearsYearsYears
Re: R 35 gearbox
« Antwort #4 am: 23 November 2021, 19:45:57 »

Zitat
in this house I do the cooking, she goes out to work - the joys of being retired.

In April 2022 my time will come, being a pensioner. My wife, pre-retired since about 30 years, will carry on cooking (and cleaning the kitchen). ;D
Gespeichert

BSA Bob

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 46
  • I love BMW-Einzylinder
    • 5234
    • Birdwood
    • SA
    • Australia
  • Mitglied seit: 02/03/2021
    Years
Re: R 35 gearbox
« Antwort #5 am: 23 November 2021, 23:53:43 »

Retirement's great, I can recommend it to all. It gives one lots more time to play around with old motorbikes in the shed.
Gespeichert

Karl

  • Global Moderator
  • Forums-Urgestein
  • *****
  • Karma: 131
  • Offline
  • Beiträge: 8474
  • BMW R25/0
    • 63065
    • Offenbach
    • Hessen
    • Deutschland
  • Mitglied seit: 25/06/2002
    YearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYears
Re: R 35 gearbox
« Antwort #6 am: 24 November 2021, 01:13:03 »

… still having 22 more years till retirement. Can anyone tell me the right numbers for the lottery on saturday?
Gespeichert
Vorsicht! Dieser Beitrag kann Spuren von Ironie oder Sarkasmus enthalten. Ohne Konservierungsstoffe (lt. Gesetz). Ohne Farbstoffe. Ohne geschmacksverstärkende Zusatzstoffe. Deckt 2% des Richtwertes des täglichen Benzintalkbedarfs.

Herculestom

  • Meister-Schrauber
  • ****
  • Karma: 9
  • Offline
  • Beiträge: 684
    • 1441
    • Heidelberg
    • Gauteng
    • South Africa
  • Mitglied seit: 18/03/2014
    YearsYearsYearsYearsYearsYearsYearsYears
Re: R 35 gearbox
« Antwort #7 am: 24 November 2021, 04:18:20 »

Only yesterday I went to see my Sangoma. After smoking funny stuff, burning weeds and throwing bones he disclosed the following:

eins   3  five siebenundzwanzig   35   fiftynine
 
 Now the meaning becomes clear to me. Karl, GOOD LUCK!
Gespeichert

cwf

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 11
  • I love BMW-Einzylinder
    • W60EU
    • London
    • UK
  • Mitglied seit: 22/11/2021
    Years
Re: R 35 gearbox
« Antwort #8 am: 24 November 2021, 18:48:35 »

Sangoma = accountant?
Gespeichert

cwf

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 11
  • I love BMW-Einzylinder
    • W60EU
    • London
    • UK
  • Mitglied seit: 22/11/2021
    Years
Re: R 35 gearbox
« Antwort #9 am: 20 Dezember 2021, 22:32:17 »

OK, back to nuts and bolts, but I must say, there are some advantages to being younger.

Anyway, the bronze bush (bearing holder) I have removed. I think it was difficult because someone had used bearing fit adhesive. The next problem is on the other end of the main shaft, the speedo drive gear. This must be removed to dismantle the gearbox. I think this is an interference fit. I have tried heat. There is very little space to lever the gear away from the bearing. Anyone have any ideas?
Gespeichert

rolf.soler

  • Forums-Urgestein
  • ******
  • Karma: 45
  • Offline
  • Beiträge: 5391
  • R27 1960 / R50 1956 / CJ750SV Gespann
    • 8135
    • Langnau Albis
    • ZH
    • Schweiz
  • Mitglied seit: 12/04/2008
    YearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYearsYears
Re: R 35 gearbox
« Antwort #10 am: 21 Dezember 2021, 23:49:37 »

I did several parts in the kitchen oven...
however, I finally bought an old kitchen oven for the workshop....usually available for ~50 $ (US...) or free, these are regularly ripped out when houses get renovatdt and land on eBay small advertisements. A goof invetition for heating housings of gearbox, Engine , cyilnder heads, hubs, chaincovers, bearings etc.
Gespeichert

cwf

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 11
  • I love BMW-Einzylinder
    • W60EU
    • London
    • UK
  • Mitglied seit: 22/11/2021
    Years
Re: R 35 gearbox
« Antwort #11 am: 03 Januar 2022, 20:02:16 »

I took the box to a friend with oxy/acetylene and that, combined with sharpened screwdrivers and some violence, succeeded. The speedo drive gear has blued, so maybe the temper has been affected.

The next problem was how to remove the mainshaft. The layshaft gears prevented the mainshaft removal. We finally managed to drive the output bearing out but still no joy. So, we drove the layshaft axle out from the clutch side, those gears dropped and allowed the mainshaft removal. Beware the spacers on both shafts.

Now to see if I can work on the good gearbox without damaging anything.

Charlie.
Gespeichert

cwf

  • Schrauber-Lehrling
  • *
  • Karma: 0
  • Offline
  • Beiträge: 11
  • I love BMW-Einzylinder
    • W60EU
    • London
    • UK
  • Mitglied seit: 22/11/2021
    Years
Re: R 35 gearbox
« Antwort #12 am: 14 Januar 2022, 19:21:22 »

The speedo drive on the 'good' gearbox needed even more heat than on the 'bad' box, so everything is blued now. The mainshaft diameter is 20.0mm, the internal diameter of the speedo drive is 19.9mm, on both gearboxes. Now to use the oven - hope it will be enough.
Gespeichert

BMW Einzylinder-Forum

« am: »

 

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 

Adresse
Adresse