Help With Rim Grind

[paulbell818]

iv looked in the seach but i carnt find what im lookin for, so iv got a grind on my rims but its crap so how is the best way to do it thanks for the help paul

[Muel]

I just use an ordinary angle grinder with a stone or metal cutting disk, so make sure you have the right disk, others work but in my experience the grind isn't deep enough and wears in no time.

1. First remove your wheel and remove the tyre and tube, I remove the rim tape as well to stop any shards getting caught in or under it and giving you punctures.

2. Put the wheel flat on the floor and put your foot on the rim so the opposite side to where your foot is sticks up in the air.

3. Turn the angle grinder on and hold it at about 45 degrees to the rim, if you want a lighter, shallower grind then tip it flatter to the rim, if you want a coarser, deeper grind then tilt it steeper.

4. Just touch the disk to the rim and start to move it back and forth, remember not to press down to hard at the start, and make sure you cover all of the rim, as the disk will only make a 3-4mm wide line.

5. Brush all the shards off the rim, or blow off with an air line if you have one.

6. Run your fingers round the edge of the rim to check for any sharp burrs which can damage your tyre, if you find any remove them with a file.

Tips:

- If the angle grinder is jumping up and down on the rim, shift your foot further up slightly and press harder, this should stop the rim moving.

- Always hold the grinder with two hands, this will help you get an even grind and will stop the grinder jumping about.

- Take your time, you don't want to get and uneven rim, if you go to deep in one place, your bite point will change depending on where the deep spots are because the destance between the pads will be smaller.

- You should get about 7-8 grinds on one rim but some rims have thicker sidewalls than others.

[karl]

i use an angle grinder, the harder you push the deeper it will be.

[Boswell]

My advice would be give it a second grind the first never stays.

Mr ?

[paulbell818]

I just use an ordinary angle grinder with a stone or metal cutting disk, so make sure you have the right disk, others work but in my experience the grind isn't deep enough and wears in no time.

1. First remove your wheel and remove the tyre and tube, I remove the rim tape as well to stop any shards getting caught in or under it and giving you punctures.

2. Put the wheel flat on the floor and put your foot on the rim so the opposite side to where your foot is sticks up in the air.

3. Turn the angle grinder on and hold it at about 45 degrees to the rim, if you want a lighter, shallower grind then tip it flatter to the rim, if you want a coarser, deeper grind then tilt it steeper.

4. Just touch the disk to the rim and start to move it back and forth, remember not to press down to hard at the start, and make sure you cover all of the rim, as the disk will only make a 3-4mm wide line.

5. Brush all the shards off the rim, or blow off with an air line if you have one.

6. Run your fingers round the edge of the rim to check for any sharp burrs which can damage your tyre, if you find any remove them with a file.

Tips:

- If the angle grinder is jumping up and down on the rim, shift your foot further up slightly and press harder, this should stop the rim moving.

- Always hold the grinder with two hands, this will help you get an even grind and will stop the grinder jumping about.

- Take your time, you don't want to get and uneven rim, if you go to deep in one place, your bite point will change depending on where the deep spots are because the destance between the pads will be smaller.

- You should get about 7-8 grinds on one rim but some rims have thicker sidewalls than others.

thanks for that i think ill go and have a go at doing it now hopefuly it should go ok

[jim-p]

my suggestion as a grinder user would be give it a medium grind, sharp grind and use some plazmatic crm pads ,koxx blue or rock pad blue they are all immense on a grind

[5.0 Rider]

And here is a little video of Carles Diaz, grinding his rim.

Carles Diaz grinding his wheel

He is cutting the grinding disc in this form:

You get a very sharp, longl-lasting grind.

Edited December 4, 2006 by 5.0 Rider

[N.Wood]

Go to OTN, sign up.

Go to the videos section and look under AndyT.

Watch his rim grinding video, all is sorted

[cas]

i used a sanding disk when i did mine..

told my dad about grinding rims. he was like wtf

and told me not to use a grinding disk otherwise it would destroy the rim.

sanding disk made it rubbish.

or you can go to a shop and they can sort it for you.. make it better.

get a professional to do it ?

caspa.

Edited December 4, 2006 by caspa

[paulbell818]

thanks for all the help, i did my rims to night did a pritty good job for my first go.

iv got magura kool stops do you think it will work a bit better with a little tar?

[adam trials]

is it possible to roughen up the rims with scratches to the rim from a saw as my dad says i am too dangerous to use a grinder and wont do it for me

[dan the trials man]

thanks for all the help, i did my rims to night did a pritty good job for my first go.

iv got magura kool stops do you think it will work a bit better with a little tar?

No tar

[paul-m-]

use will probably all find this funny but the first time i ground my rim i used a jig saw with a metal blade cuse we never had a grinder. it worked all right till my mate snapped the blade and it hit me in the led. and all we had left was wood blades and they were gash. nothing compares to a proper grind done with a proper grinder