NATIONAL MOTOR ISSUES

[DUSTIN_dup1]

Has any one else have nationals. I have them on the pit and front on all my motors. also the ones that have does any one have the five board chassis with the five cards still in them.

[Rep]

Re: NATIONAL MOTOR ISSUES

We have nationals where I work on all 3 as well (excluding a few that aren't, mainly nationals that went bad and were replaced). No 5 boards here, we got omega tek mk70's and expanders, tho we had 5 boards in the chassis's long ago.

Rep [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img]

[amfpinboy]

Re: NATIONAL MOTOR ISSUES

DUSTIN We have all 48 lanes with five board chassis's and National motors. We converted almost all of the combo motors to solid state modules. I can't remember any "leakers" . The drip pans are clean and dry.

[DUSTIN_dup1]

Re: NATIONAL MOTOR ISSUES

Does any one elses sweep go up before the tables? if so I have the solution to cerrect this. The 82-70 was set up electricaly for both the national and ge/westinghouse motors the diffrence being that the nationals run just a tiny bit faster on the five board chassis. Now to correct this all you do is go to your TA1 and TA2 switch and flip flop the normaly open wires around from TA1 to TA2 and vise versa and tah dah. I got lucky on this fix. I was put on a set of new switches and accidentaly switched those to wires. When i did this the fast sweep went away. when this happend I call Carl at AMF and asked him about this and he told me the story why the national motor runs the way it does. just thought that this was an interesting topic for discussion. Thanx everybody.

[NeilD]

Re: NATIONAL MOTOR ISSUES

That's interesting Dustin,

switching those wires around is a "trick" that a lot of Centres do over here

Maybe it originated from you [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img]

[Guest]

Re: NATIONAL MOTOR ISSUES

Neil,

That's because your sweeps run backwards...LOL

Tech

[Mark Anderson]

Re: NATIONAL MOTOR ISSUES

Quote:]Originally posted by Tech_Mech:
Neil,That's because your sweeps run backwards...LOL[/QUOTE]

Hey Tech ,
All Sweeps run Backwards , Not just Australian ones .

They start at the Front Of the Machine & Run backwards to the back of the Machine.

Unless you folks in the US are running something else :p

"I'll be in the frontend of the lanes cleaning the Dissy Belts that run backwards & take the pins from the bins & put them into the reverse running pinwheel , which drops them onto the reverse running carpet , That somehow gets all 10 of the Pins on to spot " [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]

[Coors]

Re: NATIONAL MOTOR ISSUES

sweep returning to zero on TA-1 vs TA-2 is determined by the particular circuit board. the five boards are ta-1 by default. the omega-tek pre 1984 version also return on TA-1. after 1984 return is on the TA-2. i personally prefer return on TA-1. now i know you're gonna jump up and down about the table bein unprotected for about .25 secs on a spotting cycle, just my preferrence [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img]
all mine now return on TA-2 [img]/content/btubb/images/%%GRAEMLIN_URL%%/frown.gif[/img] after the conversion of my 1981 boards for the expanders

[ May 23, 2001: Message edited by: Coors ]

[Coors]

Re: NATIONAL MOTOR ISSUES

Quote:]Originally posted by DUSTIN:
The 82-70 was set up electricaly for both the national and ge/westinghouse motors the diffrence being that the nationals run just a tiny bit faster on the five board chassis.[/QUOTE]guess i learn somethin new everyday.

[toon30s]

Re: NATIONAL MOTOR ISSUES

Coors:
Belive it or not, when I had 70s with 5 board chassis, I actually had some clod hit a table after the sweep had started up. Luckily, no damage. Man I love my 30s!

[Lampie]

Re: NATIONAL MOTOR ISSUES

Quote:]Originally posted by Coors:
guess i learn somethin new everyday.[/QUOTE]

Every board will give you one Hz more I think.

Waha reeba reeeba Los Lamparitos

[Lampie]

Re: NATIONAL MOTOR ISSUES

[ May 23, 2001: Message edited by: lampie ]

[DUSTIN_dup1]

Re: NATIONAL MOTOR ISSUES

The reason I switched all mine around is because I had somone hit the bolt that holds the on the front of the table one day then the idiot in question wanted us to fix his Kmart ball and I said I don't think so considering he had allready hit the sweep once.

[Coors]

Re: NATIONAL MOTOR ISSUES

if ya switch N.O.'s of the sweep cams. on a spotting cycle the TA-2 is interpreted as the TA-1 and the sweep returns to zero as if it were an MP chassis.

mmm. i wonder what happens on a respot cycle. sweep drops, table comes down to feel for pins...if the TA1 & TA2 are reversed. i wonder what happens when the TA-1 engages @ 186degrees??

[Jimmy Jam]

Re: NATIONAL MOTOR ISSUES

Good info Dustin. Keep it coming.

BTW, how long have you been a head mechanic? You sure know alot!

Thanks

Ps. Who is Carl? And what did he say about the motors?