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2023-11: Warosu is now out of extended maintenance.

/diy/ - Do It Yourself

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320466 No.320466 [Reply] [Original]

Any machinists here? I need a rough estimate on how much it would cost to have something like this made. All it really is is a right angle gearbox with the input a shaft and output a sprocket.

>> No.320468
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320468

>> No.320470

From scratch?

I'd estimate $1500 to $2000 depending on the materials and complexity of the drive mechanism (eg: does it need pressed bearing, etc).

Custom machining isn't cheap.

>> No.320474

>>320470
Holy shit. What if I had access to the machines and I only wanted them to make me the .cnc file?

>> No.320477

About tree fiddy.

>> No.320482
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320482

Why not adapt already existing hardware? - A final drive from a goldwing for example.

Is this for one of your lifted lawn tractors?

>> No.320483

>>320482
This one is lowered and lengthened. I have available the engine off of a 1984 Honda CB 650 SC Nighthawk but it is a shaft drive. Which is a problem. Unless you could point me in the direction of a rear axle that would support the shaft drive.

>> No.320488

As for adapting parts I don't really into motorcycles other than general maintenance and engine issue so I wouldn't even know where to start.

>> No.320489
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320489

Just spitballing, Golf cart axle?
Input shaft/gear could machined to accept the cb650 spline.

>> No.320494

>>320474

The problem is that you're still calling for 80% of the actual man-hours to be done by somebody else. Consider component selection, measuring the existing part, sketch-up, etc. Actually plugging it into the machines and pressing "go" is a relatively small piece of the puzzle in comparison.

If you wanted to save money you'd be better off just specifying you want the outer shell of the device machined, or something like that, then doing all the leg-work for drive mechanisms yourself.

>> No.320495

Setting up cnc machines isn't a joke, and NC code MUST be tailored to the specific machine and controllers it uses. You're pretty much guranteed to bury the tool into the CNC's table and destory an expensive machine if you don't know what you're doing.

You're SO NOT going to be cutting out those helical bevel gears using a cnc. You need to find those in a catalog from like mcmaster carr or boston gear or something and they are NOT going to be cheap.

>> No.320497

>>320495
>>320494
Good to know, thanks for the input.
>>320489
Might work but it would have to narrowed.

>> No.320507

>>320489
>Sportbike motor reving to 10K.

Yeah, that will work.

>> No.320546

look up surpluscenter.com
look at their right angle boxes.

profit.

>> No.320553

>>320546
Already did, none of them will handle the speed or power of the motor.

>> No.320567

What about the rearend out of a Jr. dragster?

>> No.320577

>>320567
Aren't those all chain drive?

>> No.321113

>>320577
Sadly

>> No.321274

>>320470
As an engineer and CNC machinist, I'd say way, way more considering the internal splines and that you'd have to grind the helical gears/ form cutter and lap.