Muso31

About to order one of these. Anybody know what spec motors the SA can handle? Brushless?

...Would anybody in the community posses the SA slipper shaft, pressure disk B (MB20) plate and the small H2 gear they'd be willing to part with for a couple of days so I can measure them up for production? If I can model these they can be released, the H2 gear would be adapted to a 0.8 module to work with the Astute. No doubt it'd be nice to have these parts available for SA owners anyway

That's brilliant thanks, in which case the following will work in the astute and allow the SA slipper shaft...

Thanks, I also make the cover 27mm, does the A3 part sit proud at all? Or is it flush with the cover?

Hi all, I've been in discussions with @Divefire about his ideas to modify the astute gearbox housing to run the SA slipper clutch. So far it's 3D modelled and could therefore be printed... However, we'd like to edit this so that the A3 part isn't required, in favour of an 850 bearing. You can see the A3 part below, which houses the bearing. There doesn't appear to be a reason that Gearbox case couldn't be designed to simply house the 850 bearing directly? However, in order for this to happen, I need to know the amount that the A3 part usually sits proud. Ideally I need a measurement from the other side of the gearbox housing to the A3 part... We'd need to know this so there's no play in the slipper shaft. Does anybody have an SA and a means to measure this distance accurately (digital callipers)? Thanks!

I have black dye to anodise these parts but sadly I just don't have time sorry! If I can get some time I'll sort some in black but it's usually possible to find a local place who will sort it for you

Part is finally manufactured! - https://www.ebay.co.uk/itm/226138880495 or DM me if interested

Great news, enjoy the diffs!!

Update on this one, diff v2.0 is now in stock. I've listed the last of my private v1.0 stock on ebay (only 4 items) then one those are gone I'll list the new version but feel free to message me privatley if anybody would like a 2.0. Nobody will notice a difference in the versions, the gears ratios are the same I just reworked the tolerances on the internals mostly.

Sorry about the delay - PM me and I can send a quote over

Granted, some others have asked also so that'll be available March time. I have a bit more time now with newborns growing! The problem with all these parts, is after designing them on computer, they get sent off for manufacturing/machining, and theres' no room for error (plus it costs a lot) - the part that's designed has to work first time, which isn't often the case when designing things. So if something is 0.05mm/0.1mm out then it wont work, as a result, with some parts I've had to make minor adjustments to the machined part (which is time consuming). Same with the original diff, but the v2.0 shouldn't require any manual changes from myself. Fresh out the factory and on to the supply lines! v2.0 is exactly the same gear diameter/pitch etc as that all worked perfectly, the internals have had a minor redesign to create more space. As ever, it's machined to a +-0.02 tolerance so they're precision engineered. It'll be on eBay in a few weeks

Hi all, I've been manufacturing parts mostly to assist with my own resto projects. Just a heads up that once the current stock sells I don't intend to make any more (due to family commitments etc) so the parts won't be available for much longer. Here's an update of stock: Gearbox plate - 21 left, https://www.ebay.co.uk/itm/225130030935 Custom diff - only 11 left https://www.ebay.co.uk/itm/225546378902 - these things work incredibly well! (It's the only part I'd be tempted to re-release) A1 Bracket, screw version - 32 left https://www.ebay.co.uk/itm/225270660602 A1 Bracket, pin version - 21 left https://www.ebay.co.uk/itm/225230838638 A2 Diff cover - 16 left https://www.ebay.co.uk/itm/225457587196 Alloy diff housings - 33 pairs left https://www.ebay.co.uk/itm/225444424246 Just a heads up to forum members to grab any whilst you can. I still have the computer drawings of all designed parts so these won't be lost, but I don't intend to restock anything, aside from being tempted by a v2.0 of the planetary diff. Hope it's useful!

Any volunteers to test some 3d prints of this part? I don't own an egress (very sadly) If so please DM me and I'll ship some out

Would have been simple enough but it's good that they're available on shapeways. It'd be nice to find a professional machinist in the community as it'd drop the price of everything. After designing parts they have to be machined to a +-0.02mm tolerance or the quality is poor. Sadly it's expensive unless a bulk order is made, but there isn't enough demand to order in bulk. If I had time I'd create a community site where members can request parts to be designed, then the cost of machining can be split

Interesting info thanks, it looks like the front towers are the bigger problem, it's a much bigger task to design some of these but not out of the question