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Author Topic: grinding out my dropouts?  (Read 4387 times)

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sans.terre

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grinding out my dropouts?
« on: March 19, 2015, 03:10:40 PM »
im looking to take my dropouts in just a hair so i can slam my wheel and have room to take off chain.

axel slams at 13.5 ...maybe take it in to like 13.4?

anyone do this still? do i just go at it with a grinder? any tips?
it's not rocket science, eh? keep some meat near the welds and dont go crazy?

Offline GUMP_

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Re: grinding out my dropouts?
« Reply #1 on: March 19, 2015, 04:04:04 PM »
Hardest thing will be getting both sides even

Offline pegs

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Re: grinding out my dropouts?
« Reply #2 on: March 19, 2015, 04:28:43 PM »
you don't need a grinder to take off that much, just buy a cheapo set of files. piss easy and you won't fuck your frame up.

mark it out so you've got lines to work to. after that you'll know when it's even by standing the bike up on it's bars and checking your tyre clearance either side

Offline Sasha

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Re: grinding out my dropouts?
« Reply #3 on: March 19, 2015, 04:36:58 PM »
Marker pen and a decent round file. Easy peasy.

sans.terre

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Re: grinding out my dropouts?
« Reply #4 on: March 19, 2015, 05:23:32 PM »
am i mistaken in thinking the sides dont really need to be (horizontally) totally even?
since the wheel will be held back some, I dont need to stress getting them right on the mark? just so long as i can take out a link from my chain and still get my wheel off.

Offline Cellmember

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Re: grinding out my dropouts?
« Reply #5 on: March 19, 2015, 07:00:05 PM »
You'll also want to ensure that the dropout slot faces are parallel to each other so the axle isn't sitting on a sharp edge which will ruin the frame and axle.
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Offline Sasha

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Re: grinding out my dropouts?
« Reply #6 on: March 19, 2015, 08:24:44 PM »
The sides don't need to be totally even, no.

sans.terre

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Re: grinding out my dropouts?
« Reply #7 on: March 19, 2015, 08:29:09 PM »
k thnx XD

Offline Bunky

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Re: grinding out my dropouts?
« Reply #8 on: March 20, 2015, 12:27:50 PM »
I just grinded out some drops from 3/8ths to 14mm and deepened them while I was at it. 

The best way to do it is with a Dremel tool with the small sander wheel.  I'll try and remember to take a picture of mine when I get home from work.  It's real easy if you keep it on a slowish setting so that you don't burn through the dropout fast. 
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Offline couch

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Re: grinding out my dropouts?
« Reply #9 on: March 21, 2015, 02:58:45 PM »
You're going to be at it forever if you try and file out .1" from there. Mask or scribe it off and hit that with some rotary tools. Get close then file the rest to final size.

Offline asilva23

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Re: grinding out my dropouts?
« Reply #10 on: March 21, 2015, 04:44:55 PM »
I just grinded out some drops from 3/8ths to 14mm and deepened them while I was at it. 

The best way to do it is with a Dremel tool with the small sander wheel.  I'll try and remember to take a picture of mine when I get home from work.  It's real easy if you keep it on a slowish setting so that you don't burn through the dropout fast.

This. Like he said, slow is key.

Offline pegs

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Re: grinding out my dropouts?
« Reply #11 on: March 21, 2015, 08:31:27 PM »
bmx dropouts aren't hard to file and .1" is fuck all. if you have the gear go ahead but files from a discount shop will do the job

edit - don't get me wrong if i was at work i'd be using a die grinder/rotary bit. i'm just saying its easy to do with the basics and the lad would make a mess with an angle grinder by the sound of it
« Last Edit: March 21, 2015, 08:52:23 PM by pegs »

Offline GUMP_

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Re: grinding out my dropouts?
« Reply #12 on: March 22, 2015, 01:45:01 AM »
Sort of thread related. If some one had a set of 10mm dropout forks and wanted to run a 14mm axle hub. When filing the drop out besides opening it front to back would you also have to deepen the axle slot?

Offline Professor Horatio Hufnagel

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Re: grinding out my dropouts?
« Reply #13 on: March 22, 2015, 05:06:28 AM »
You'd want to yeah, else the peg/washer/nut/whatever isn't going to have as much to grip/support the axle

Geo would be altered if you didn't too but I wouldn't worry as much

Offline metalbmxer

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Re: grinding out my dropouts?
« Reply #14 on: March 22, 2015, 07:35:47 AM »
bmx dropouts aren't hard to file and .1" is fuck all. if you have the gear go ahead but files from a discount shop will do the job

edit - don't get me wrong if i was at work i'd be using a die grinder/rotary bit. i'm just saying its easy to do with the basics and the lad would make a mess with an angle grinder by the sound of it

.1"x4 is fuk all but doing x4 is a pain in the arse

angle grinder going slow is where it's at. grind, stop, check. repeat

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Re: grinding out my dropouts?
« Reply #14 on: March 22, 2015, 07:35:47 AM »

 

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