landy_andy Posted July 25, 2020 Share Posted July 25, 2020 Almost at the point of getting the axle tubes made for my custom 609’s for my D100” build. Was wondering if there was anyone here running a centred diff and were drive line vibes an issue ? Thanks ! Quote Link to comment Share on other sites More sharing options...
RedLineMike Posted July 26, 2020 Share Posted July 26, 2020 ran a nissan y61 rear axle with a lt230 on my previous buggy, overall it wasnt an issue with the offset driveshaft but due to the rear suspension geometry it would occasionally vibrate on over run / breaking heavily Quote Link to comment Share on other sites More sharing options...
landy_andy Posted July 26, 2020 Author Share Posted July 26, 2020 Thanks Mike, were you running UJ’s or a UJ/DC joint combo ? Quote Link to comment Share on other sites More sharing options...
bishbosh Posted July 28, 2020 Share Posted July 28, 2020 Any benefits to being centred? I suppose you get equal clearance and interchangeable 1/2 shafts but the downside is it doesn't line up with the front diff so will plough its own furrow? Quote Link to comment Share on other sites More sharing options...
RedLineMike Posted July 29, 2020 Share Posted July 29, 2020 On 7/26/2020 at 4:58 PM, landy_andy said: Thanks Mike, were you running UJ’s or a UJ/DC joint combo ? was running the standard nissan rear prop so uj/uj combo Quote Link to comment Share on other sites More sharing options...
landy_andy Posted July 29, 2020 Author Share Posted July 29, 2020 On 7/28/2020 at 4:06 AM, bishbosh said: Any benefits to being centred? I suppose you get equal clearance and interchangeable 1/2 shafts but the downside is it doesn't line up with the front diff so will plough its own furrow? It looks neater.... and I don’t need a truss to mount the top link brackets onto. Half shafts will still be unequal due to the offset of the ring gear but with 1.5” 35splines its a non-issue and can’t plow furrows in rocks 😉 1 Quote Link to comment Share on other sites More sharing options...
landy_andy Posted July 29, 2020 Author Share Posted July 29, 2020 12 hours ago, RedLineMike said: was running the standard nissan rear prop so uj/uj combo Ok.. thanks, gonna give it a go.... what could go wrong 😁 Quote Link to comment Share on other sites More sharing options...
landy_andy Posted August 8, 2020 Author Share Posted August 8, 2020 (edited) Works out at under 5” (4.732”) lateral shift..... Edited August 8, 2020 by landy_andy Quote Link to comment Share on other sites More sharing options...
elbekko Posted August 8, 2020 Share Posted August 8, 2020 On 7/30/2020 at 1:14 AM, landy_andy said: It looks neater.... and I don’t need a truss to mount the top link brackets onto. Half shafts will still be unequal due to the offset of the ring gear but with 1.5” 35splines its a non-issue and can’t plow furrows in rocks 😉 Can still aim your diffs next to a rock. Bit harder to do when they're not in line. Quote Link to comment Share on other sites More sharing options...
landy_andy Posted August 8, 2020 Author Share Posted August 8, 2020 13 hours ago, elbekko said: Can still aim your diffs next to a rock. Bit harder to do when they're not in line. 99% of North America trucks have a centred rear diff & offset front....if it really becomes an issue....we’ll, it’s just an excuse for bigger tires 😉 Quote Link to comment Share on other sites More sharing options...
elbekko Posted August 9, 2020 Share Posted August 9, 2020 Oh, I know. Just seems a little sad to lose that small advantage Land Rovers have had for ages. 1 Quote Link to comment Share on other sites More sharing options...
discomikey Posted October 13, 2020 Share Posted October 13, 2020 I've been in a few vehicles with patrol Y61 axles behind an Lt230, Some have had drive train vibration on overrun badly, some haven't at all. That's more to do with unequal UJ angles (diff pinion vs t box angle) than lateral offset. That being said I'd aim for moving the diff closer to in line if possible, as its less kind on the UJ's etc We've flipped a few Y61 rear casings to give a RH drop instead of the very slightly LH drop as standard, and added trussing and full bolt on LR mounts. I'd highly recommend doing this. Get your measurements right and the original shafts fit in, just on the other side. Different axle yes, but you might be able to apply that theory to your 609 casing, to get it more in line. 1 Quote Link to comment Share on other sites More sharing options...
landy_andy Posted October 17, 2020 Author Share Posted October 17, 2020 Hi, thanks for the reply. Ended up building it centred... will see how it goes. Realistically it’ll not see any highway miles so if it does vibrate, not big deal. Quote Link to comment Share on other sites More sharing options...
Carloz Posted November 8, 2020 Share Posted November 8, 2020 On 7/26/2020 at 1:24 AM, landy_andy said: Almost at the point of getting the axle tubes made for my custom 609’s for my D100” build. Was wondering if there was anyone here running a centred diff and were drive line vibes an issue ? Thanks ! As long as the outputshaft from the TC and the input shaft from the diff are (near) parallel there is no issue (when angles are resonable of course). The drive shaft doesn't know that the offset is in the vertical or in the horizontal plane (or both). 😉 Quote Link to comment Share on other sites More sharing options...
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