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Main => Main Forum => Topic started by: AlanS17 on June 19, 2003, 06:09:09 pm

Title: Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: AlanS17 on June 19, 2003, 06:09:09 pm: I would like to flush-mount my trackball, but I need a Happ plate to do it. Can I fit an Imperial 3" trackball onto a Happ 3" plate?
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: rampy on June 19, 2003, 07:48:29 pm: Quote from: AlanS17 on June 19, 2003, 06:09:09 pm
I would like to flush-mount my trackball, but I need a Happ plate to do it. Can I fit an Imperial 3" trackball onto a Happ 3" plate?

yes you can... I did it with the non-flush plate... but the mounting holes are near-standard...

Rampy
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: u_rebelscum on June 19, 2003, 11:56:38 pm: Quote from: AlanS17 on June 19, 2003, 06:09:09 pm
I would like to flush-mount my trackball, but I need a Happ plate to do it. Can I fit an Imperial 3" trackball onto a Happ 3" plate?

Yes, I used the flush-mount plate. 3" Trackball holes are standardized (size & location).

BTW, my Betson/Imperial TB leaves a little itty-bity bigger space around the TB lip than my happs TB; approx 1/16" diameter difference, so 1/32" space all the way around if mounted perfectly centered.
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: AlanS17 on June 20, 2003, 12:02:00 am: I kind of figured this was the case. That's why I asked. There's one more part I can order from Bob Roberts! I need to compile a list...
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: mccall on June 20, 2003, 12:03:43 am: I had to enlarge the holes on my Imperial to use the Happs boltless plate. Not much, just slightly. I'm not sure if I had an older model and that was the reason or if the newer ones also need this.
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: AlanS17 on June 20, 2003, 12:12:13 am: Quote from: mccall on June 20, 2003, 12:03:43 am
I had to enlarge the holes on my Imperial to use the Happs boltless plate. Not much, just slightly. I'm not sure if I had an older model and that was the reason or if the newer ones also need this.

Doesn't sound like a problem that a good mallet can't fix. ;D
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: mccall on June 20, 2003, 12:18:04 am: Yeah, some friendly persuasion from a large mallot would probably have worked ;-)

It wasn't much, just a shaving actually, and it was only on the top inch or so of the top of the housing. It took all of 30 seconds to do with a snug fitting drill bit. I read where you can "shave off" the black paint around the inner mounting bolts of the Happs plate and that will also work, but I read it after I shaved my TB with a drill bit so I do know personally whether it works or not.
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: u_rebelscum on June 20, 2003, 12:27:58 am: Quote from: mccall on June 20, 2003, 12:03:43 am
I had to enlarge the holes on my Imperial to use the Happs boltless plate. Not much, just slightly. I'm not sure if I had an older model and that was the reason or if the newer ones also need this.

Hmm, I had to do that with my wico TB, but not my betson TB. FWIW, the betson I have is a "golden tee" "high lip" TB.
Title: Re:Can I use a Happ 3" trackball plate with an Imperial 3" ball?
Post by: mccall on June 20, 2003, 12:07:17 pm: Mine was not the high lip version, maybe there's the difference.