simon k wrote:
a lot of years ago I bought a very flat glass tile for doing stuff like this, very handy
Same, but I used to make creams and ointments on it (pharmacist). Now, re-purposed
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| Advice on laygear clearance https://ausmini.com/forums/viewtopic.php?f=2&t=99601 |
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| Author: | Bill B [ Thu Jan 16, 2020 4:57 pm ] |
| Post subject: | Advice on laygear clearance |
Trial fitted the new laygear to a 4 synchro remote box using the old thrust washers. Clearance was .009 inch but should be under 0.006 inch. I found a thicker thrust washer in a box of bits but it has closed the clearance down to 0.0015 inch when the manual has the the minimum as 0.002 inch. The laygear spins freely and there is a slight amount of end float. BUT is 0.0015 inch too tight once the gearbox heats up? Should I linish the back of the thrust washer to be safe? |
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| Author: | drmini in aust [ Fri Jan 17, 2020 3:52 am ] |
| Post subject: | Re: Advice on laygear clearance |
Yes, I would take a little off the back. I know idler gear clearance reduces when hot, this might do the same. Edit: A friend built a rodchange box with only 1.5 thou idler clearance, he had trouble changing gears when hot. So I gave it 2 thou more clearance and it was fine. |
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| Author: | Phil 850 [ Fri Jan 17, 2020 8:04 pm ] |
| Post subject: | Re: Advice on laygear clearance |
I would have thought the aluminium box would expand faster and more than the steel laygear, therefore providing the clearance you need. I rebuilt a Range Rover gearbox many years ago and was told by the JRA staff to build it with the minimum clearances I could so long as it was not “tight”. I followed their advice and finished up with the quietest RR gearbox I had ever heard. |
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| Author: | Bill B [ Sat Jan 18, 2020 9:23 am ] |
| Post subject: | Re: Advice on laygear clearance |
Thanks for the comments. It sounds like there isn't a lot in it between clearing and binding, especially when the stated minimum is only 2 thou. I have linished the back of the washer and now have a close 3 thou, so that should be correct. As an afterthought, could I have fitted a packing shim behind one of the 2 thrust washers to close down the excess clearance? Or would that be something else to break off and float around? |
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| Author: | timmy201 [ Sat Jan 18, 2020 11:31 am ] |
| Post subject: | Re: Advice on laygear clearance |
I’ve noticed guessworks in the UK makes the shims, so could be another option if you don’t have the correct thrust washers Eg http://www.guess-works.com/Shop/Parts/d ... htm?id=561 |
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| Author: | Bill B [ Sat Jan 18, 2020 3:49 pm ] |
| Post subject: | Re: Advice on laygear clearance |
timmy201 wrote: I’ve noticed guessworks in the UK makes the shims, so could be another option if you don’t have the correct thrust washers Eg http://www.guess-works.com/Shop/Parts/d ... htm?id=561 I happened across one of their websites a few days ago. They are sourcing some very useful NLA items. Didn't see any thrust washers, though. Thanks for the link. When I google "guessworks" I keep getting "leather handbags" and other fashion accessories. |
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| Author: | ausdino [ Sat Feb 10, 2024 12:33 pm ] |
| Post subject: | Re: Advice on laygear clearance |
Shims from Guessworks. I had 11thou clearance, so I'll go with 3thou clearance (with the option of 5). Better to go for the lower end of of 2-6thou ?? |
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| Author: | simon k [ Sat Feb 10, 2024 5:00 pm ] |
| Post subject: | Re: Advice on laygear clearance |
I rub the bearing face on a sheet of 1200 grit emery, just sprayed with wd40 - it cleans the face up nicely and is easy to take off a thou or few when needed a lot of years ago I bought a very flat glass tile for doing stuff like this, very handy |
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| Author: | ausdino [ Sat Feb 10, 2024 7:27 pm ] |
| Post subject: | Re: Advice on laygear clearance |
simon k wrote: a lot of years ago I bought a very flat glass tile for doing stuff like this, very handy Same, but I used to make creams and ointments on it (pharmacist). Now, re-purposed
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| Author: | simon k [ Sat Feb 10, 2024 7:56 pm ] |
| Post subject: | Re: Advice on laygear clearance |
ausdino wrote: simon k wrote: a lot of years ago I bought a very flat glass tile for doing stuff like this, very handy Same, but I used to make creams and ointments on it (pharmacist). Now, re-purposed good for mixing body filler too, right?
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