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R24 and r25 gearbox casing compatibility
R24 and r25 gearbox casing compatibility
I am restoring an R24 gearbox that has a big crack from an old crash. I am trying to tig weld it but i have a lot of porosity and some heat cracks. I will send it to a proffessional welder as i think that it is over my abilities.
My question is this. If the gearbox casing is not repairable can i use the casing from an R25? are they different?
Thanks in advance!
- wa1nca
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Re: R24 and r25 gearbox casing compatibility
Salis site doesnt list a part # for the r24
Lists different part # for r25,r25/2,r25/3
https://www.bmwclassicmotorcycles.com/p ... housing-2/
tommy
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA
- wa1nca
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Re: R24 and r25 gearbox casing compatibility
file:///C:/Users/wa1nc/AppData/Local/Temp/PartsManual_R24_1956_German_Rigid_R25R25-2R25-3R26-2.pdf
All have a different part # for transmission cases
tommy
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA
Re: R24 and r25 gearbox casing compatibility
- bm68andreas
- Posts: 42
- Joined: Thu Jan 01, 2015 3:21 pm
Re: R24 and r25 gearbox casing compatibility
i can help you with it...
Andreas
Re: R24 and r25 gearbox casing compatibility
Re: R24 and r25 gearbox casing compatibility
- vechorik1373
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Re: R24 and r25 gearbox casing compatibility
Technical Adviser, Former owner, Bench Mark Works
662 312 2838 cell 9 am to 4pm CST PLEASE!
- vechorik1373
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Re: R24 and r25 gearbox casing compatibility a great trick!
Years ago, I knew a guy who was the most talented welder I ever knew. This is what he did, (welding the crack in my R17 crankcase, using aluminum magnesium alloy rod) that once the cracked case is welded, and the weld is dressed down to the case surface, the way he make it "disappear" was to take various grades of sandpaper, and not sand the finished smoothed out weld, but to lay the fresh sandpaper over the weld, and tap it with a hammer repeatedly, changing grades of sandpaper. This will imprint the weld with a granular appearance (like the cast surface), and then after the empty case is glass bead blasted, you will not be able to see where the weld is, on the external surface. I know first hand that it works! The repaired crack in the R17 crankcase is almost imperceptible. You have to know where the crack was, and stare at it to find the spot.
Technical Adviser, Former owner, Bench Mark Works
662 312 2838 cell 9 am to 4pm CST PLEASE!
- deyoung2837
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Re: R24 and r25 gearbox casing compatibility
Do you remember the part number of the Eutectic (brand) welding rods?
Lee