Parts for hand ergometer (exercise bike)

[irving2008]

Dean,

If you prefer to machine from solid and dont mind the wastage feel free I went for the lowest cost approach.

When you say 'shaft sticking out' I assume you mean the inner end of the axle? Thats why there are 2 spacers, the second goes on the end of the axle and a standard M8 nyloc nut & washer bears against it. I did it this way as in the past i found a M8 nut is too large and fouls the bearing outer race (da max for bearing 12mm, A/C for nut is 15mm) and turning an M8 washer down to 12mm is fiddly.

But if you have a better solution....

[JAZZCNC]

Dean,

If you prefer to machine from solid and dont mind the wastage feel free I went for the lowest cost approach.

Ok will do not a problem just small delay on material, which I've sorted. I Should have material for weekend so will do it then.

Thats why there are 2 spacers,

Ah ah my mistake didn't see x 2. . . . Lol . . . . Thou think it better to space the bearings far apart has possible so I'd be inclined to make a washer, so I'll do that if you don't mind. I'll make wider spacer and turn a washer down, turning washer down is easy enough so no problem.

Like this.

[irving2008]

That works for me!

Those renderings are great, really helps to visualise things. What are you using? Sadly there's nothing that runs on Android that does that.

I'll post other drawings tomorrow, need to review them to see if I can simplify them.

[mekanik]

[QUOTE=irving2008;47875]That works for me!

Those renderings are great, really helps to visualise things. What are you using?

second that jazz, very impressive.

[JAZZCNC]

That works for me!

Those renderings are great, really helps to visualise things. What are you using? Sadly there's nothing that runs on Android that does that.

Yes 3D models are great for showing visually unfortunately software to do this quickly and easy is not cheap. These are done with Solid works and it's bloody expensive fortunately I have it thru business so effectively tax mans bought it or should say not getting it. . .Lol

[JAZZCNC]

Hi Irving,

Nearly done mate had loads of problems with Lathe and my dosy mate bring me wrong stuff.!! . . . But here's a couple of pics to wet your appetite. Just got flats to put on pin and whip crank up on CNC machine then done.



Cheers
Dean.

[Clive S]

Very nice Dean, how did you do the split to make the clamp bit? ..Clive

[JAZZCNC]

Very nice Dean, how did you do the split to make the clamp bit? ..Clive

MAGIC.!!. . . . . . . Or . . . 1.5mm end mill in cnc machine. . .Lol