ajock Posted April 9, 2015 Report Share Posted April 9, 2015 Anyone have any ideas, how to improve standard ty brakes. for 81 250 majesty. Have a spare set of hubs to play with. cheers in advance. Quote Link to comment Share on other sites More sharing options...
tony27 Posted April 10, 2015 Report Share Posted April 10, 2015 The way to get the best performance out of any drum brake is to get thick linings made & have them turned to the same size as the hub. You need to space the shoes out at the cam by the same amount, 1mm is good, then mount the backplate in a lathe & take light cuts until you get to the required size. When refitted to the wheel minus the spacers you will have full contact over the whole lining length & only a small amount of movement before the brake starts working 3 Quote Link to comment Share on other sites More sharing options...
jon v8 Posted April 10, 2015 Report Share Posted April 10, 2015 The other thing you could do is to drill the hub like this. Quote Link to comment Share on other sites More sharing options...
charlie prescott Posted April 10, 2015 Report Share Posted April 10, 2015 Hi Guy's. Jon that is a "Pit Bike" "rear" hub, and they do work very well indeed, and all for £30, then to drill holes in it like that, proves how good most Chinese stuff really is now-a-days. I stick with TY's personally, but I have got some of these for later. Regards Charlie. PS skim the linings. like the sensible answer. Quote Link to comment Share on other sites More sharing options...
jon v8 Posted April 11, 2015 Report Share Posted April 11, 2015 Hi Guy's. Jon that is a "Pit Bike" "rear" hub, and they do work very well indeed, and all for £30, then to drill holes in it like that, proves how good most Chinese stuff really is now-a-days. I stick with TY's personally, but I have got some of these for later. Regards Charlie. PS skim the linings. like the sensible answer. I knew someone would notice ! I cropped the pic of one of Jon Bliss's Cubs. Ben Wilmore told me how good they are when drilled like that,he reckons to drag the brake for a few yards after a stream section and they are back to normal. 1 Quote Link to comment Share on other sites More sharing options...
feetupfun Posted April 11, 2015 Report Share Posted April 11, 2015 I knew someone would notice ! I cropped the pic of one of Jon Bliss's Cubs. Ben Wilmore told me how good they are when drilled like that,he reckons to drag the brake for a few yards after a stream section and they are back to normal. I thought this was a joke until jon v8's second post Quote Link to comment Share on other sites More sharing options...
zippy Posted April 11, 2015 Report Share Posted April 11, 2015 Anyone have any ideas, how to improve standard ty brakes. for 81 250 majesty. Have a spare set of hubs to play with. cheers in advance. switch it over to hydraulic disc............ I hate drum brakes............ OK mr grumpy pants will go away now........... Quote Link to comment Share on other sites More sharing options...
jon v8 Posted April 12, 2015 Report Share Posted April 12, 2015 I thought this was a joke until jon v8's second post No joke,and Bens father Martin was out today on his Cotswold BSA with drilled rear hub, couldn't see if the front was as well,just noticed the rear. Quote Link to comment Share on other sites More sharing options...
mattylad Posted April 13, 2015 Report Share Posted April 13, 2015 I rode Bens bike for a short time a couple of weeks ago. The brakes felt totally normal for a drum, powerful and progressive. Although I did not try filled with water and mud, which were prevelant during the actual trial. Ben won the expert class so I guess they must have been OK! Quote Link to comment Share on other sites More sharing options...
ducman Posted April 13, 2015 Report Share Posted April 13, 2015 Ty brakes are good anyway,they work perfect with original EBC brakeshoes.Do not buy cheap no name stuff from ebay,you pay twice. Quote Link to comment Share on other sites More sharing options...
ajock Posted April 13, 2015 Author Report Share Posted April 13, 2015 The way to get the best performance out of any drum brake is to get thick linings made and have them turned to the same size as the hub. You need to space the shoes out at the cam by the same amount, 1mm is good, then mount the backplate in a lathe and take light cuts until you get to the required size. When refitted to the wheel minus the spacers you will have full contact over the whole lining length and only a small amount of movement before the brake starts working What kind of tool do you use on the lathe? Quote Link to comment Share on other sites More sharing options...
ajock Posted April 13, 2015 Author Report Share Posted April 13, 2015 What rpm for a good finish? Quote Link to comment Share on other sites More sharing options...
feetupfun Posted April 13, 2015 Report Share Posted April 13, 2015 What rpm for a good finish? I think I used something like 50-60 RPM and a tool steel tool I used a tool shaped for machining steel and it worked fine The brake material dust is probably abrasive (clean the lathe well) I mount the backing plate on a mandrel I also suggest that the drum surface should be machined smooth first Quote Link to comment Share on other sites More sharing options...
ajock Posted May 3, 2015 Author Report Share Posted May 3, 2015 Thanks for your help. Quote Link to comment Share on other sites More sharing options...
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