A forum for owners of Yamaha TTR250 trail and enduro bikes!

Members Login
Username 
 
Password 
    Remember Me  
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Broken foot peg bolts
Post Info TOPIC: Broken foot peg bolts
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Broken foot peg bolts
Permalink  
 

yawn550 cord-lock paracord. Don't leave home without it.no I should have stayed home today. Landed a nice air and sheared off a right side foot peg bolt. Lashed it and then headed out. I avoided standing. Then lowsided in 3rd gear in the sand and broke my starter switch AGAIN! I just replaced it. Thank goodness I got a cheap one off ebay!. LOLevileye



Attachments
__________________
TTRfan


Super Guru

Status: Offline
Posts: 8565
Date:
Permalink  
 

Bad luck but that's an easy fix. The broken bolt should drill out easy wink

Looking at the photo the broken end seems rusty so may have fractured a while ago.

PS Good jump photo biggrinbiggrin



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
peteBLUEttr


Super Guru

Status: Offline
Posts: 1721
Date:
Permalink  
 

Yeah right nice jump photey, well captured that man smile



__________________

Pete. South Somerset, England.
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Permalink  
 

I got some Grade 10.9s today. Anyone know what grade OEM bolts are?



__________________
peteBLUEttr


Super Guru

Status: Offline
Posts: 1721
Date:
Permalink  
 

I'd say a high tensile strength bolt like a 10.9 will work perfect.

__________________

Pete. South Somerset, England.
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Permalink  
 

Drned it. got the wrong pitch. Anyone know what the pitch should be on these? 



__________________
peteBLUEttr


Super Guru

Status: Offline
Posts: 1721
Date:
Permalink  
 

You crazy Americans with your imperial fixings and whitworth threads n stuff. Its a japanese built yamaha bike so i would try sticking a standard metric bolt in there?...

__________________

Pete. South Somerset, England.
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Permalink  
 

Yes. I got metric bolts and they are the wrong pitch. They are course not fine. lol



__________________
TTRfan


Super Guru

Status: Offline
Posts: 8565
Date:
Permalink  
 

The manual says the "thread size" is M10  



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
peteBLUEttr


Super Guru

Status: Offline
Posts: 1721
Date:
Permalink  
 

You sure someone hasn't tapped it out before for a coarse thread?..



__________________

Pete. South Somerset, England.
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Permalink  
 

Looks like the holes are M10 fine and I got M10 coarse. I will find the right bolts.

__________________
peteBLUEttr


Super Guru

Status: Offline
Posts: 1721
Date:
Permalink  
 

It surprises me that Yamaha would use fine thread for a footpeg hanger, did you use a thread guage?

__________________

Pete. South Somerset, England.
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Permalink  
 

I don't have a tread gauge. I'll do that in town manana.

__________________
petenz


Super Guru

Status: Offline
Posts: 1156
Date:
Permalink  
 

peteBLUEttr wrote:

It surprises me that Yamaha would use fine thread for a footpeg hanger, did you use a thread guage?

 they do on the XT660 aswell 10 X 1.25... normal 10mm bolt has a 1.5mm pitch...

so the bolt you are after is most lightly a 10 X 1.25pitch...

 

 

.



__________________

 

.....................................................................................................

 http://www.kiwibiker.co.nz

Bikes... 06 TTR250 / 09 XT660R / 1977 Montesa Cota 348 MRR / 1979 Montesa H6 125 Enduro...

E-mail  xtpete1@gmail.com
TTRfan


Super Guru

Status: Offline
Posts: 8565
Date:
Permalink  
 

Agree - just checked and it's definitely M10 x 1.25



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Permalink  
 

Thanks guys!!! Yeah the fine threads have more resistance to loosening from vibration. It's a good call on Yami's part. I'm heading back to Taos this morning for the 10mm 1.25 bolts in a 10.9 grade. I live 20+ miles from town!

__________________
peteBLUEttr


Super Guru

Status: Offline
Posts: 1721
Date:
Permalink  
 

There are arguments for both fine and coarse thread, course thread wont strip as easy but yeah fine thread is better with vibration. Maybe good upgrade then going up to a higher tensile strength bolt like 10.9 or 12.9 if you can get hold of them... I can imagine landing a jump stood up on the pegs causes much stress! I have heard of few people now breaking em on ttr's...



-- Edited by peteBLUEttr on Tuesday 2nd of June 2015 05:46:54 PM

__________________

Pete. South Somerset, England.
Green Chile ADV 1


Veteran Member

Status: Offline
Posts: 66
Date:
Permalink  
 

M10 1.25 pitch Grade 10.9



Attachments
__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Broken foot peg bolts


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard