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NiteRyder

Rust under throttle tube!

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NiteRyder

During a short ride yesterday morning I noticed the throttle was slightly ever so off. It didn't feel as smooth and wouldn't snap back as quick as it normally does. Upon removing the throttle tube this is what i found:

 

1772111784_Rustedhandlebar.thumb.jpg.12b48a22cd8f21b578426f71cf0080e8.jpg 

 

Not sure why Yamaha decided not to powder-coat the whole handlebar. Bike has never seen rain so this rust is just from me washing the bike. The plus side is I've been eyeballing the Renthal Ultralow handlebars to improve my riding position from being so vertical. A little elbow grease, sandpaper, and WD40 did the trick to clean this mess up until new handlebar is installed.

 

Be safe guys, sticky/rough throttles are never a good thing in this industry.

 

 

 

 

 

 

 

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sorkyah

This shouldn't have happened

The whole bar is powder coated 

Wonder if something like sand/salt got under there 


ATGATT... ATTATT, two acronyms I live by.
 

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ElGonzales

?? The whole area there has to be covered with grease. This is part of the standard maintenance. Looks like someone forgot this step :D

 

 

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sorkyah
47 minutes ago, ElGonzales said:

?? The whole area there has to be covered with grease. This is part of the standard maintenance. Looks like someone forgot this step :D

 

 

There shouldn't be grease

The tube is nylon and is the bearing material 

Grease traps dirt and the buildup could cause the tube to stick


ATGATT... ATTATT, two acronyms I live by.
 

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ElGonzales
6 minutes ago, sorkyah said:

There shouldn't be grease

The tube is nylon and is the bearing material 

Grease traps dirt and the buildup could cause the tube to stick

Interesting, my handlebar had a thin film of light grease there when I changed it and not a single bit of rust. Thought this was normal like at my usual vintage bikes.  But it's a second hand bike, you never now what happened to them.  I used grease again, throttle grip moves very smooth. 

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NiteRyder
2 hours ago, sorkyah said:

This shouldn't have happened

The whole bar is powder coated 

Wonder if something like sand/salt got under there 

Your right it shouldn't have happen. Both sides of handlebar where the grip/throttle tube sit are not powder-coated. Here is the left side of handlebar:

 

1458357706_rustedbar2.thumb.jpg.af0967b97e8328b75799b5e4a5982acb.jpg

 

2 hours ago, ElGonzales said:

?? The whole area there has to be covered with grease. This is part of the standard maintenance. Looks like someone forgot this step :D

 

 

I never apply grease under throttle tube due to the reason mentioned by @sorkyah. The only spot I add a little grease is where the end of throttle cable rides on cam of throttle tube. 

 

It would be interesting to know if any other 18' MT07's, or previous years with black handlebars, look like this. 

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NiteRyder
Posted (edited)
22 minutes ago, ElGonzales said:

Interesting, my handlebar had a thin film of light grease there when I changed it and not a single bit of rust. Thought this was normal like at my usual vintage bikes.  But it's a second hand bike, you never now what happened to them.  I used grease again, throttle grip moves very smooth. 

Just curious if your handlebar is powder-coated black end to end?

Edited by NiteRyder

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ElGonzales
51 minutes ago, NiteRyder said:

Just curious if your handlebar is powder-coated black end to end?

No, its grey with shiny blank metal beneath the throttle tube area. 

Looks like this:

132006665__57.thumb.JPG.1cfb68d387da5d5b747f05e69dc8285b.JPG 

(pic of a used one, yamaha part no. 1WS-26111-00)

 

This is my own, MT-07 from the end of 2014. :

IMG_20180908_102904.thumb.jpg.060e585ff797194198bfa3c23d81ea6e.jpg

 

You are right, using a nylon tube on dry metal makes sense (at long as it isn't oxidating like crazy). I asked google and educated myself with 30 pages of pro/contra grease discussions in other forums. 

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farhanali89

I recently opted to fit oem bars back to my MT as the previous owner fitted renthals but i preferred the width of the stock bars. I sprayed clinging lithium grease on this area. This is not a thick grease but came in a spray version which is clear. I would periodically use this as it wont attract dirt as it applied as a thin film unlike copper/aluminium grease.

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Beemer

I would sand that rust off (or Naval Jelly) and spray that area with Rust-Oleum, then some WD 40 "SPECIALIST." over top of that.

 

895109.jpg
WWW.WEBSTAURANTSTORE.COM

Shop WD-40 300059 Specialist 10 oz. Dirt & Dust Resistant Dry Lube PTFE Spray. In stock at a low price and ready to ship same...

 

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Beemer

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NiteRyder
On 3/16/2019 at 10:26 AM, Beemer said:

I would sand that rust off (or Naval Jelly) and spray that area with Rust-Oleum, then some WD 40 "SPECIALIST." over top of that.

 

895109.jpg
WWW.WEBSTAURANTSTORE.COM

Shop WD-40 300059 Specialist 10 oz. Dirt & Dust Resistant Dry Lube PTFE Spray. In stock at a low price and ready to ship same...

 

 

This is exactly what I did until my new Renthal bar comes in. 

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Beemer
9 hours ago, NiteRyder said:

 

This is exactly what I did until my new Renthal bar comes in. 

Is it working OK so far?


Beemer

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NiteRyder

So far so good. I'm still quite surprised by the amount of rust I had under that tube but i'm glad I caught it in time.

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