Dial indicator gauge

[DrDonnyBrago]

In light of all the threads involving potentially warped discs, can anyone recommend me a decent yet cheap dial indicator to check run out?

Thanks in advance .

[chris-red]

[dobby]

https://www.machinemart.co.uk/shop/search/filter/dial+guage/type/any/page/1

try these

[oldbiker]

these are very good but you may find cheaper if you look around

https://cgi.ebay.co.uk/Electronic-Digital-Dial-Indicator-Gauge-0-01mm-DTI-/360220492692?cmd=ViewItem&pt=UK_BOI_Metalworking_Milling_Welding_Metalworking_Supplies_ET&hash=item53ded08394
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It`s all powerfull white mans magic
https://i897.photobucket.com/albums/ac178/tzrsteve/album%201/035.jpg

[oldbiker]

generally you will know if the disk is warped by the intermittent gripping of the brake pads as you push the bike, if you feel the brakes grip then release then grip etc etc. the disk is warped
____________________
It`s all powerfull white mans magic
https://i897.photobucket.com/albums/ac178/tzrsteve/album%201/035.jpg

[cb1rocket]

[DrDonnyBrago]

Cheers all .

Will try the pikey versions first, tried it previously with a length of pipe and some axle stands but couldn't see anything wrong.

[Wafer_Thin_Ham]

[Noxious89123]

Is this regarding the fluctuating brake effort that was found when you had your MOT? I had the same thing on my bike, and I know of others who have had the same, all on CBR600F4's.

Rubbing the discs with some wet and dry, and some brake cleaner makes it go away, although it comes back after a short while. I've changed pads and discs, and they did exactly the same after a short while.

I get no pulsing through the lever either. So I'm thinking it isn't warped discs.
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'06 Honda CBR125RW-6 ~ '00 Honda CBR600F-Y ~ '07 Honda CBR600RR-7 ~ Bikeless
'53 Ford Ka 1.3 ~ '03 Vauxhall Astra SRi 1.8 ~ '52 Vauxhall Astra SRi 2.2 ~ '53 Vauxhall Astra GSi

[Pete.]

It's hard to find warp in a fully floating disk using a dial gauge because they are free to move laterally on the buttons. It would be possible I guess, by watching the swing of the needle as the wheel rotates and if it makes a sudden jump then the disc is warped not just running-out on the buttons, it would take a bit of a trained eye to decipher the readings though.

Dial gauges are cheap on eBay. Get a plunger-type rather than the lever type - it'll be better suited to the purpose (aswell as being cheaper). You can get them for less than a fiver. I have a handful of them.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Noxious89123]

[Pete.]

Non-floating disks are bolted directly to the wheel. Floating ones are fitted to a carrier with buttons , and the carrier bolts to the wheel.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Pete.]

Hey how cool is that - the ebay auction thing at the bottom is displaying auctions for dial indicators. Must grab it from the topic.

I sense an opportunity for seriously comedic abuse here
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Vincent]

To do a quick test by eye, lay the edge of a steel rule on the disc in various places, hold it up to the light and look for any light between the rule and the disc. However, check that the disc doesn't have a "lip" on the edge, if it does, and you lay the steel rule on this lip, it'll tell you nothing.

One thing to look for if you think the disc is warped but appears straight - if the disc has been off the wheel at some time, make sure there is absouloutly no dust or muck between the disc and the wheel. It only takes a small bit of grit or a tiny spec of swarf to make a difference.