VSETT ZERO 9 Split Hub with 8.5x3" wheels + Pulley Group Buy?

[surfnacho]

@Ac53n

Ah neat, ill see what i can do about these model wise unless @evwan or you wants to handle the CAD lol.

Either works

[mr.shiteside]

IMO printed pulleys would be great. As AC mentioned, because it’s big there are a lot of teeth engaged at once so there’s much less load on each of them. I’m running 48 or 50T PETG pulleys for a year or so now, not huge distance but I’d guess 100-200km

[Moroz]

Aren’t you going to order the hub before doing the CAD?
I tried to measure the dimensions accurately but i don’t have a digital caliper…

[Ac53n]

If anyone else in the US wants a set, id probably just have them send me one to model around and test fit before sending back with the set of 3d printed pulleys.

[Moroz]

Hi @surfnacho, don’t worry about cluttering the thread. The idea is to communicate all the information to the members with the hope of making a group order. I have a few questions:

• At what quantity does the production of pulleys become profitable for you and affordable for us?
• Do you prefer to make a 76T, 78T, or 80T pulley?
• What would be the approximate price per piece?
• What material are you thinking of using?
• How can we minimize the weight while ensuring the pulley’s strength?
• What would be the production lead times?

Thanks!

[Moroz]

And that would be… @Evwan ?

[Ac53n]

Presumably so lol.

[surfnacho]

@Moroz

• At what quantity does the production of pulleys become profitable for you and affordable for us?

I definitely want to make it happen, so let’s say ten pulleys.

@Moroz

• Do you prefer to make a 76T, 78T, or 80T pulley?

I am not sure it really matters. Whatever you guys want

@Moroz

• What would be the approximate price per piece?

It depends on the size, internal features, etc. I did some 72T CNC machined pulleys a few years ago for $100/set of 2. I could probably hit that mark again (assuming overall size and machine time is similar), despite being much lower quantity.

@Moroz

• What material are you thinking of using?

Definitely just 6061 AL

@Moroz

• How can we minimize the weight while ensuring the pulley’s strength?

Get smart with pocketing…

These 55t and 72t InfinityHub pulleys from a few years ago were super light and plenty strong.

@Moroz

• What would be the production lead times?

Since everything is in-house now, once the design is done and I have material, I could have em done within a week.

[b264]

@surfnacho

@Moroz

• Do you prefer to make a 76T, 78T, or 80T pulley?

I am not sure it really matters. What ever you guys want

I’m a fan of prime numbers. Why not 79T? Then you also never get uneven tooth wear.

[Moroz]

Sounds good. I’ll order 2 Pcs. Preferably 78T or 80T depending on the vote

[Evwan]

I suck at cad

[Evwan]

I’d actually run printed pullies here. Just don’t keep it belts too tight

[Moroz]

79T is fine

[surfnacho]

Cool. Ye if you get the vote going and have people interested, I can get started whenever.

[Ac53n]

Neato, well if we want to go printed instead if milled lmk, im more than happy to mock something up and make a batch.

[surfnacho]

@Ac53n

printed instead if milled

boooo

[Moroz]

@Ac53n

If it was me, id do a plastic pulley insert with lasercut aluminum shims to construct the teeth. But thats just because i dont have access to a CNC machine.

What about the famous lasercut?

[Ac53n]

Also viable, just more expensive than a print alone. at that point i’d just look into getting it done proper machined though lol.

[Ac53n]

I’ll trade my very nice modified 3d printer for your haas any day

[b264]

@surfnacho

@Ac53n

printed instead if milled

boooo

Just mill it from a block of PETG