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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> HELP! Can the subframe be unbolted and replaced on a ttr?
Post Info TOPIC: HELP! Can the subframe be unbolted and replaced on a ttr?
scotty72


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HELP! Can the subframe be unbolted and replaced on a ttr?
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Hi All

I have just back from my first trail riding ride and it was bl@@dy great fun! biggrin

However...i managed to flip her no.  Her arse in now banana shaped cry. I have looked at the sub frame and looking from the rear it is bent and possibly has a crack. On the left side, from rear, there appears to be a bolt holding it to the main frame but on the right side it appears to be welded...help confuse

Please...

https://www.dropbox.com/sh/f8muzs5thhr00pt/NoiT3cmkmt/Bent%20TTR


-- Edited by scotty72 on Saturday 1st of June 2013 04:57:51 PM



-- Edited by scotty72 on Saturday 1st of June 2013 05:13:29 PM

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scotty72


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Right

Frame pics uploaded on the same link:

 

https://www.dropbox.com/sh/f8muzs5thhr00pt/NoiT3cmkmt/Bent%20TTR

#5 & 6 are the, indeed, fractured frame on the left side (looking from the rear)

#7 & 8 are the bend in the frame on the right side

#9 is a combo

 

ARSE! bleh  It was all going so well....

 



-- Edited by scotty72 on Saturday 1st of June 2013 06:57:41 PM

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Lostboyscout


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Looks like a new style ....I did much the same but not to the same degree ...

As far as I know it's all welded the only bit that un bolts is the bar by the air filter , the rest is welded !

It may me a case of strip the plastics off and seat to see how much damage is done!

Brian is poss. The best one to confer with on this , (not saying you have been here Brian, just you know the frame better) !
you may be able to apply heat and use a pulling force to bring it back into line but there is a chance that you may kink the tubes , there again it mat be better to cut and replace the bent bits and sleeve the joints ....tough one

Pics of the tubes would help !

Sorry cant be better help !


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TTRfan


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As Lostboyscout says!

Lets see the pics of the subframe and where bent and we can take it from there but almost certainly some welding gonna be needed no

Brian



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TT-R250M


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Hi Scott, sorry to hear about your TTR. no

The frame is as mentioned above. Depending on how bad it is, you can cut it completely from the frame and replace the whole piece or... straighten and weld the original (if possible).

If worst comes to worst, I have that part already chopped off a frame. Maybe Brian has that part though?

Jarrah



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TTRfan


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Not as bad as it looks.

Strip off the rear mudguard and wires, give it a good clean and find a mate who is good with a MIG welder and grinder - and, preferably, has some propane or oxy/acetylene heating gear.

You will need to straighten up the subframe and insert something solid between the frame parts where the crack is before welding.

On the RH side where the frame is kinked, some clever use of heat and hammers might get the kink out. 

At the end of the day that section of the subframe isn't doing a great deal more than supporting the rear mudguard and number plate holder!

Brian



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scotty72


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Cheers Brian

I have a bike builder in mind...I intend to butter him up with breakfast tomorrow at Goodwood! The rear subframe does seem pretty pointless as all it does do its support the exhaust, lights and plate! Also, why on earth isn't it a bolt on item, I may be soaking behind the ear but I'm sure others have done this before and any designer/engineer must have been able to predict such happenings.

Now, err, when the bike landed on the end of the left side of the bars ( hard ) it seems to have left the left grip an inch in front of the right (so to speak)....

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TT-R250M


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Glad you have someone to help you.

The sub-frame also holds your ass on the seat so it does support a fair bit of weight. If carrying a passenger that adds to the weight (obviously). That said it does not support anything structural so it's not too much of a worry.

Hope you have it sorted soon.

Jarrah



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scotty72


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Dropping of the poor bike tomorrow and I hope my bike builder friend can perform magic to make it straight again... aww



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scotty72


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Ive collected her and the sub frame looks as good as new (almost..).  It was a b*gger to do but a big thank you to Steve at Red Max!! (Google the name if you fancy a unique flat tracker or Cafe racer biggrin)

Now all i have to do is not flip her ever again.. no



-- Edited by scotty72 on Thursday 6th of June 2013 10:18:46 PM

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TT-R250M


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Can we see pics of the repair?

Glad you got it sorted

Jarrah



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scotty72


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Hi

If you click on the origional link I have put on three new pics.  It's a bit difficult to get detail as you cant see a repair, but the last two picks show the plastics are now where they should be and not stuck up in the air! He's reinforced the tubes internaly as well.

Going on a ride with the TRF this Sunday on a newbies ride...after last weekend I think it shouldn't be too challenging and hopefully I wont be having to do anything to the bike appart from wash it biggrin

Scott



-- Edited by scotty72 on Friday 7th of June 2013 06:49:28 PM

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Cubber


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I bet you're well pleased with that repair, Scott.

Enjoy the TRF ride. smile

Martyn



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scotty72


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Cubber wrote:

I bet you're well pleased with that repair, Scott.

Enjoy the TRF ride. smile

Martyn

 Yes Martyn, very very very glad that I know someone who can do such a good job and not take an arm off me for the pleasure! smile



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TT-R250M


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Nice repair, looks good.

Glad it was an easy fix and your back on the trails (green lanes).

Jarrah



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Lostboyscout


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Good to see it's all straight again ....nice job too

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noeyedear


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Lost boy scout wrote:

Good to see it's all straight agan....nice job too

 lets see how the repair you are doing on the bare frame  Is going dave wink and a picture 



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TT-R250M


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noeyedear wrote:
Lost boy scout wrote:

Good to see it's all straight agan....nice job too

 lets see how the repair you are doing on the bare frame  Is going dave wink and a picture 

 Hey Adrian, it seems that you missed the post above. See below...

scotty72 wrote:

Hi

If you click on the original link I have put on three new pics.  It's a bit difficult to get detail as you cant see a repair, but the last two picks show the plastics are now where they should be and not stuck up in the air! He's reinforced the tubes internally as well.

Going on a ride with the TRF this Sunday on a newbies ride...after last weekend I think it shouldn't be too challenging and hopefully I wont be having to do anything to the bike apart from wash it biggrin

Scott



-- Edited by scotty72 on Friday 7th of June 2013 06:49:28 PM

 Enjoy!

Jarrah



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noeyedear


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Not Scotts frame another one lost boy scout is welding

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TT-R250M


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Oh I must have missed a post, man what a nightmare to go through em all. biggrin

Note to self: See above wink

Jarrah

 



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