Nuts that vibrate loose - The final Solution

Rooster

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Ok, I am at my wits end with my footpeg bolts on my BRM that rattle loose. If you spotted an idiot making his way down the koppie at wild west this weekend balancing on one footpeg, that was me :oops:

I have tried torque, nylon lock nuts, double lock nuts and blue loctite. I am on the verge of just welding the damn thing to the frame.

Any Ideas? (Other than buy a KTM).
 

Rooster

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Re: Nuts that vibrate loose

Ok Here goes

The footpeg itself is mounted onto a bracket of mild steel. This bracket is attatched to steel plates on the frame - simple.

However, the brake lever uses the upper bolt as its fulcrum - requiring spacers made of alumenium to be inserted between the bracket and the frame in order to ensure the whole setup runs in paralel for correct operation of the pedal. Said pedal has a bushing in it to prevent the pedal fastened and movement impeded.







 

Chev350

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Re: Nuts that vibrate loose

can you drill bolt and put a split pin behind nut
if you using stainless bolts nuts they very prone to vibrating loose
have you tried high strength lock tight, when you use lock tight were bolts cleaned first
 

FHM_V

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Re: Nuts that vibrate loose

+1 and you could use a split pin with a castle nut and a spring-washer, should never rattle loose again.
 

Rooster

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Re: Nuts that vibrate loose

Chev350 said:
can you drill bolt and put a split pin behind nut
Have not tried this, a friend of mine has a drill press, last measure...

Chev350 said:
if you using stainless bolts nuts they very prone to vibrating loose
Ok, does this apply to the nut and the bolt, or just the nut?

Chev350 said:
have you tried high strength lock tight, when you use lock tight were bolts cleaned first
Clean yes, but only the blue one - which one would you recommend?
 

Chev350

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Re: Nuts that vibrate loose

Rooster said:
Chev350 said:
can you drill bolt and put a split pin behind nut
Have not tried this, a friend of mine has a drill press, last measure...

Chev350 said:
if you using stainless bolts nuts they very prone to vibrating loose
Ok, does this apply to the nut and the bolt, or just the nut?
Both and also stainless can bit up and seize when you try to loosen nuts and bolts some times

Chev350 said:
have you tried high strength lock tight, when you use lock tight were bolts cleaned first
Clean yes, but only the blue one - which one would you recommend?
think it the red colour it has such stronger bonding
 

Rooster

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Re: Nuts that vibrate loose

Cool thanks guys
 

Rooster

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Re: Nuts that vibrate loose

Mark250GP said:
To Isolate some of the vibration? I didnt think of that approach
 

Rooster

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Re: Nuts that vibrate loose

Naughty Ian said:
Fit a Nord lock washer and problem solved
Ok, now thats cool. Going to northern bolt tomorrow to get some toys - Red loctite, non stainless nuts and bolts and some nord lock washers. Thanks all.

The TM motor is perfect on every possible way... other than vibration!
 

bulletproof

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Re: Nuts that vibrate loose

Rooster. Now you are grasping at straws. I have never had to retighten any TM footpeg.
From what I can see from the pics you will have to secure the nuts with split pins. They are coming loose because the frame metal is soft. And a few other design flaws...
 

Rooster

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Re: Nuts that vibrate loose

No question the pegs are not attached as they should be - but you can not seriously tell me the TM does not vibrate more than other 300 2t engines?
 

Astrid

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Re: Nuts that vibrate loose

bulletproof said:
Rooster. Now you are grasping at straws. I have never had to retighten any TM footpeg.
From what I can see from the pics you will have to secure the nuts with split pins. They are coming loose because the frame metal is soft. And a few other design flaws...

Dude, when I feel the need to use a vibrator, I get Rooster to start the BRM and I sit on it for a while. :eek: ;) :D

That thing vibrates like hell.
 

bulletproof

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Re: Nuts that vibrate loose

Rooster said:
No question the pegs are not attached as they should be - but you can not seriously tell me the TM does not vibrate more than other 300 2t engines?
If it does you have other issues...
 

Rooster

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Re: Nuts that vibrate loose

Now you have me worried... It's done that since new, the motors never given me a moments grief.
 

bulletproof

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Re: Nuts that vibrate loose

Don't get over the top now. Vibration as perceived by a person is not a reason to condemn the motor. Drill your foot peg bolts and ride on.
 

Rooster

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Re: Nuts that vibrate loose

Cool - will Post update after completion
 
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