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Old Aug 01, 2006, 02:07 AM
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Wanted
Mounting bolts for Hacker B20 w/4:1 gear box

I am looking for the two tiny machine screws used to mount a geared Hacker B20. Preferably short ones.

Thanks.
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Old Aug 01, 2006, 02:33 AM
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If somebody can verify the size, I'm sure I have a couple I can send to ya.
Lemme know.

Brian
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Old Aug 01, 2006, 09:11 AM
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Metric Machine Screws

The hacker motor front bell uses a 2.5mm x 0.45 thread.
[actually 2.6mm fits my Hacker tighter]. But,due you need
screws to mount gearbox to motor or screws to mount the
gearbox to firewall ? I don't know what gearbox you are
using, but have 2.5 and 2.6 screws to fit motor. I can help
you if you give me more detail on what you need. Cecil
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Old Aug 01, 2006, 09:30 AM
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Hiya Cecil,
I'm pretty sure it's the bolts that go into the GB to mount the motor (the smaller ones). That's what I got out of it anyway.

Brian
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Old Aug 01, 2006, 11:04 AM
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Brian, you are probably right, but what gearbox
and length of screws? Cecil
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Old Aug 01, 2006, 11:26 AM
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See the Hacker outline dwgs. here :
http://www.hackerbrushless.com/motors_b20specs.shtm

The gearbox mounts to the firewall with M2 screws. Screw length depends on the firewall thickness.
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Old Aug 01, 2006, 01:50 PM
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Just go to the hooby shop and dig around the RC Cars section. I think DuBro has M2 screws in a bag. Just cut it to length.


Brian, an EAJ
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Old Aug 02, 2006, 01:13 PM
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Hi guys,

Gearbox to firewall is correct. M2 (2mm) by 4mm long. I did go to a machine shop and tried M2 machine screws, but they were very loose (sloppy) as if they were slightly too thin.....maybe there is no way to get around that??? Worried about easily stripping the brass threads on the gearbox.

Any advise?
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Last edited by flystoolow; Aug 02, 2006 at 03:47 PM.
Old Aug 02, 2006, 01:17 PM
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Dang, I wish I had a Maxon GB to test a couple in. I'm sure I have some that fit
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