Author Topic: gearbox MK1  (Read 3688 times)

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Offline gmh

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gearbox MK1
« on: 16 Nov 2019 at 09:50 »
Hello from Slovenia!
I bought a Douglas 1948 mark1 (https://www.douglasmotorcycles.net/index.php?topic=1035.0)
The engine is now runing ok but in the midle of testig it jump in gear and block it.
I disassemble gearbox and there is no parts broken or damiged. Only problem i found is this on video.
https://youtu.be/AlnvBUQ0_Oo
Sory for my english.
Write slow i cant read fast. :lol:

Offline Neville Heath

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Re: gearbox MK1
« Reply #1 on: 17 Nov 2019 at 14:46 »
Hi there in Slavenia. I think the brass bush has moved on the shaft towards the gearbox.
Neville Heath 

Offline Neville Heath

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Re: gearbox MK1
« Reply #2 on: 17 Nov 2019 at 14:54 »
My photo shows where the bush should be. If it is too far forward it would foul the inside of the input part.
Neville

Offline gmh

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Re: gearbox MK1
« Reply #3 on: 17 Nov 2019 at 17:41 »
Thank you Neville
You are the best! This is right foto .
Wellcome to https://en.wikipedia.org/wiki/Slovenia (not Slavenija)
Gregor M. Humar

Offline gmh

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Re: gearbox MK1
« Reply #4 on: 17 Nov 2019 at 18:25 »
Problem is located.
Oil hole is blocked and no channels. 

Thanks!

Offline Eric S

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Re: gearbox MK1
« Reply #5 on: 17 Nov 2019 at 21:26 »
Hello you (?)
It looks like somebody made a sleeve of brass without all the channels but on your video the teeth do not seems to fall in front of notches. Can't you rotate the shaft around?

Eric

Offline gmh

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Re: gearbox MK1
« Reply #6 on: 06 Mar 2020 at 19:10 »

new part is made

Gregor