Parts for hand ergometer (exercise bike)

[blackburn mark]

That boss looks a tad short to my eyes for hanging an aluminium tube?

Cant help you on the alli parts but if you can use anything in acetal let me know.

[irving2008]

you may be right.. even if loctited in place? No problem to make it longer though.

And thanks for the offer.... i'm sure there are parts that could be done in acetal... eg gears, if the 3D printed ones aren't up to the job..

[blackburn mark]

eg gears, if the 3D printed ones aren't up to the job..

Ill need plenty of notice as they will be all science to me, Iv only ever cut T2.5 timing belt pulleys thus far.

[chopper12]

hi,
just noticed this thread, what material and quantities and timescale are you looking at?
might be able to make some of the bits in the evenings after work if that helps you out

[irving2008]

hi,
just noticed this thread, what material and quantities and timescale are you looking at?
might be able to make some of the bits in the evenings after work if that helps you out

For all the drawings posted, unless stated, the material is aluminium, some machineable grade such as 6061 but depends on what can be picked up on eBay/etc. As to quantity, 2 off each drawing (i.e 2 cranks, and 2 handle assemblies comprising 5 parts, handle/boss/axle/2xspacer). Timescale, well I need to get exercising, so ideally as soon as possible, maybe within 4 weeks?

[chopper12]

ok not a problem should be less then 3 weeks, got some 6082 bar ends at work that can use if 6082 is ok?
will need some extra dimensions on the boss as cannot open the .dxf files
hope this helps

[JAZZCNC]

Just seen this I can help if needed. . . . . just let me know. Got some stuff here if needed

PS: Can do them Wed if that helps.!