| ausmini https://ausmini.com/forums/ |
|
| Diff Assembly https://ausmini.com/forums/viewtopic.php?f=2&t=94644 |
Page 1 of 1 |
| Author: | GundyGuy [ Sat Jan 14, 2017 12:52 pm ] |
| Post subject: | Diff Assembly |
Has anyone ever bothered to check the run out on the two bearing spigots after assembling a diff centre That is after bolting the large driven gear to the spider gear housing Bit of a trick to do but my one isn't behaving very well as in run-out Or is this just BMC Quality |
|
| Author: | sitnlo62 [ Sat Jan 14, 2017 7:33 pm ] |
| Post subject: | Re: Diff Assembly |
How much runout do you have? |
|
| Author: | GundyGuy [ Sun Jan 15, 2017 6:29 am ] |
| Post subject: | Re: Diff Assembly |
sitnlo62 wrote: How much runout do you have? it varies as to where i put the crown wheel 0.010" in one position i moved it 2 holes and its down to 0.003" I am using a new cross pin centre so i can dial in the hub next to the crown wheel |
|
| Author: | sitnlo62 [ Sun Jan 15, 2017 9:17 pm ] |
| Post subject: | Re: Diff Assembly |
i moved it 2 holes and its down to 0.003 You have got to be happy with that?? |
|
| Author: | GundyGuy [ Mon Jan 16, 2017 5:19 am ] |
| Post subject: | Re: Diff Assembly |
sitnlo62 wrote: i moved it 2 holes and its down to 0.003 You have got to be happy with that?? No not really 1/2 thou might be ok |
|
| Author: | drmini in aust [ Mon Jan 16, 2017 6:11 am ] |
| Post subject: | Re: Diff Assembly |
It's a helical gear, so lateral runout is not as critical as a spiral bevel or hypoid gear set. And it's a 2 piece hemisphere, normal diffs are 1 piece. So tolerances stack up. Maybe worse with an aftermarket gear. I think you are being a bit critical considering its design.... 
|
|
| Author: | GundyGuy [ Mon Jan 16, 2017 10:25 am ] |
| Post subject: | Re: Diff Assembly |
Not really I am looking at it from an engineering view point Close enough isn't good enough If there was a little bit of clearance I could dial the 2 halves in and get it perfect Sent from my HTC_PN071 using Tapatalk |
|
| Author: | GundyGuy [ Mon Jan 16, 2017 4:53 pm ] |
| Post subject: | Re: Diff Assembly |
Problem fixed Took about 5 mins to do and achieved zero run out Engineering as it should be |
|
| Author: | Phil 850 [ Mon Jan 16, 2017 8:21 pm ] |
| Post subject: | Re: Diff Assembly |
GundyGuy wrote: Problem fixed Took about 5 mins to do and achieved zero run out Engineering as it should be What did you do to get it to Zero ? |
|
| Author: | GundyGuy [ Tue Jan 17, 2017 5:10 pm ] |
| Post subject: | Re: Diff Assembly |
I took a few thou off the stem of the bolts and thats all it took to get it to behave |
|
| Author: | Phil 850 [ Tue Jan 17, 2017 7:50 pm ] |
| Post subject: | Re: Diff Assembly |
So the unthreaded part of the bolt just under the head was pulling it out of position ! |
|
| Author: | GundyGuy [ Wed Jan 18, 2017 5:16 am ] |
| Post subject: | Re: Diff Assembly |
Thats correct the bolts were all different sizes so i made them all the same only about 3 thou between them but enough to cause a problem |
|
| Page 1 of 1 | All times are UTC + 10 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|