Grabbie Brakes

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Model T Ford Forum: Forum 2013: Grabbie Brakes
Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Perigo - Linton, IN on Thursday, October 17, 2013 - 08:10 am:

When I come to a stop gradually, no problem. If I need to stop more quickly and apply the brakes more firmly, I get a series of "jerks" with accompanying low grinding noise and finally an abrupt stop. I plan to take a look today into the transmission. What should I be considering? Lining, drum,etc.

Thanks,
Mike


Top of pagePrevious messageNext messageBottom of page Link to this message  By Scott Conger on Thursday, October 17, 2013 - 12:06 pm:

Rear end likely the culprit. Check your rear axles with weight off of the car and see if either or both axles/wheels will move in and out. Sounds like a failed thrust washer in the differential .

Check is now and do not drive an inch further until you do.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Steve Jelf, Parkerfield KS on Thursday, October 17, 2013 - 12:14 pm:

I think Scott is on the right track. See this: http://dauntlessgeezer.com/DG79.html.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Perigo - Linton, IN on Thursday, October 17, 2013 - 01:22 pm:

Sure appreciate the suggestions guys, but I have check the axles for play. There is absolutely none. I didn't rebuild the chassis myself, so that was one of the first things I checked out. The voice of experience and the lingering sound of a racheting pinion and ring gear.

I feel it's in the tranny because reverse is some hat similar in that it is smooth until I apply the needed pressure to make it back up with power. Then it engages abruptly.

I thought it had Kevlar linings, but now not so sure. I opened up the tranny and pulled off a small frayed sample on the brake band. Does oiled soaked Kevlar burn down to almost no ash? This did. Can't tell, but it doesn't look as yellow as it should. Are cotton linings more prone to grabbing?

Thanks
Mike


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce in Dallas TX on Thursday, October 17, 2013 - 01:38 pm:

Sounds like wood bands. They are reputed to chatter although I have never used any so I can't say much else.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bob Jablonski on Thursday, October 17, 2013 - 01:47 pm:

Mike:

Do the easy thing first..... reline the bands , then drive. If the problem still persists, look into the differential.


Top of pagePrevious messageNext messageBottom of page Link to this message  By ex trooper on Thursday, October 17, 2013 - 01:54 pm:

Kevlar is like fiberglass... itll get red with a torch yet remain intact... Tried to "burnish" the ends with a torch to prevent unraveling and it did nothing. ws


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Perigo - Linton, IN on Thursday, October 17, 2013 - 01:58 pm:

I know they're not wooden since they are woven. I have used wooden bands and really liked them. Since I have a set of good Kevlar bands, I'll give them a try, I have to say that based on my burning experiment that these are cotton.

Thanks Again,
Mike


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bob Jablonski on Thursday, October 17, 2013 - 07:23 pm:

Mike:

If you liked the wood liners, why not use them again... Have used them the past 10 or so years and very satisfied.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Perigo - Linton, IN on Thursday, October 17, 2013 - 07:43 pm:

Bob,

I guess I'm a little tight:-) The Kevlar linings came with the chassis, and I feel I should use them. Then again I do have the forstner bit and found them easier to install than woven linings. I will take the hogshead off anyway since I don't have enough alcohol on hand to install bands through the tranny opening:-)

Mike


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bob Jablonski on Friday, October 18, 2013 - 06:34 am:

Mike:
Understood.

The Kevlar linings could be traded or sold for the price of the wood ?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jay - In Northern California on Friday, October 18, 2013 - 10:18 am:

Reading you thread title made me think of this guy.



Gabby Hayes
Born: May 7, 1885, Stannards, NY
Died: February 9, 1969, Burbank, CA


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Perigo - Linton, IN on Friday, October 18, 2013 - 04:35 pm:

Funny you should mention Gabby, Jay, that's why I spelled it "ie."

I seem to remember that he advertised Puffed Wheat - "Shot from Guns!"

Mike


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jay - In Northern California on Friday, October 18, 2013 - 08:18 pm:

Mike, Great minds think alike. :-)


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