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Drum Brake GT380

Posted: Tue Feb 09, 2021 11:19 am
by grumpy56
Hello. Is this gap between the hub and brake plate normal? Thanks.

Re: Drum Brake GT380

Posted: Fri Feb 12, 2021 7:26 am
by daxman
Well there obviously has to be 'some' gap there .

Does it all fit comfortably withing the fork gap? If you feel you have to physically splay the forks it's probably not right.

Re: Drum Brake GT380

Posted: Fri Feb 12, 2021 8:52 am
by grumpy56
It fits OK between the forks, but it does appear that the fork spacing on the non-brake side is not as wide as that on the brake side. I had a T350 and I think the brake hub also had this gap, but am not 100% sure. There is a bushing pressed into the axle bore on the inside of the brake plate that is not flush and I believe that is what is keeping it from seating all the way. Don't want to start grinding away on it though I until I'm sure its a problem, otherwise I might have a bigger problem!!!

Re: Drum Brake GT380

Posted: Fri Feb 12, 2021 10:21 am
by jabcb
As grumpy56 said, make sure the wheel bearings are fully seated.
Also make sure the speedo drive is properly engaged.

Re: Drum Brake GT380

Posted: Fri Feb 12, 2021 11:52 am
by grumpy56
Is that "gap" normal??? Thanks boys.

Re: Drum Brake GT380

Posted: Fri Feb 12, 2021 11:54 am
by grumpy56
Jabcb: Does your 72 380 have that gap between hub and brake plate or is it flush?

Re: Drum Brake GT380

Posted: Fri Feb 12, 2021 8:28 pm
by jabcb
My 72 GT380 has a GT550/GT750 4LS front brake.

The 72 GT380 front brake is similar to the T350 front brake.
Just checked the gap on my 69 T350 & it’s a lot less than your’s. Looks to be around 0.04 inches.

Re: Drum Brake GT380

Posted: Fri Feb 12, 2021 9:46 pm
by grumpy56
Thank you, Will rip it apart tomorrow to see if I see anything obvious,