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Post by raychappo on Jun 22, 2015 14:18:45 GMT -5
Whilst replacing the proper unit I've noticed what seems to be excessive backlash in the drive train. If I put it into 1st gear and lock the counter shaft (no clutch basket fitted), the output shaft will turn between about 30 and 40 degrees before stopping. I've checked my spare engine and this is the same.
Is this normal?
Ray
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Post by goandy on Jun 22, 2015 17:59:28 GMT -5
I'll have a look at my nos gearbox tonight...
Don't forget there is some slack in the primary chain taken up by the tensioner- but I wouldn't have thought it'd be that much.
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Post by raychappo on Jun 23, 2015 0:25:50 GMT -5
The primary chain is off, the the backlash is between input and output shsft
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Post by goandy on Jun 23, 2015 7:43:45 GMT -5
Yes of course, you did mention that but I obviously scanned past that part!
Well on my nos never been used gearbox, the drive sprocket turns just over a tooth when the clutch basket is locked- so I'd say that your backlash is pretty normal!
We learn something new- I guess it's the gear engagement teeth moving in the slightly larger sockets on the adjacent gear?
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Post by raychappo on Jun 23, 2015 8:47:49 GMT -5
Phew... That's good to hear, thought for a second there I'd have to do a gearbox rebuild as well as the proper unit swap I'm doing.
Thanks Andy, you saved me a lot of time and grief.
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Post by mike500 on Jun 23, 2015 10:20:49 GMT -5
ray your backlash is normal for the gearbox,i would be more worried if there wasn't any lash in it regards mike
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Post by raychappo on Jun 23, 2015 10:44:56 GMT -5
Thanks Mike, I suspected it was the norm as my spare is exactly the same, just good to hear confirmation from other folk. Did you have a good time at the TT? I have my ferry tickets for next year  ? |
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Post by mike500 on Jun 23, 2015 11:55:54 GMT -5
I had an amazing time at the TT ray and are due back on the isle of man the 3rd of july for the 60th aniversery of the southern 100 racing on the billown circuit which is 4 mins walk from my house in castletown.im also booked already for TT 2016 so hopefully we can sort something out regards mike
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Post by raychappo on Jun 23, 2015 12:21:44 GMT -5
We'll have to catch up. Hopefully I'll be on the RE5 ? |
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