OzVMX Forum
Clubroom => Tech Talk => Topic started by: YZ250H on September 23, 2008, 05:42:01 pm
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I have seen so many of these bent I used to think they where made with a bend. Then I saw a straight one :o :o.
There is obviously a way to straighten bent tube - can someone let me in on the secret please ::)
Believe me this tip will be used worldwide, so you may want to consider patenting before posting here ;D ;D
Thanks in advance for any help ;).
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You mean part# 42?
If it this round tube you can straighten it with heat but you'll probably still have a kink in the tube. You can yucky putty ::) , sand and spray. Other than that it's cut and shut with new tubing or replace with good second hand or NOS.
Or bling it up with a new mechined up Ally replacement 8). You know you want to ;D.
(http://i323.photobucket.com/albums/nn458/mx250syd/yz.gif)
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Part number 42 it is.
I'm trying not to totally break the bling meter Graeme ;D ;D So the ally one may be a last resort. I am commited to the standard one as I just paid $42US for part #43 ::). Apart from that the blokes on here will give me too much of a bagging if I go too bling.
One idea I had was heating up the tube and driving another rod down the middle, but I suppose a kink in the other direction is likely.
I think finding a straight one would be a challenge, but potentially worth considering ::).
I would try the heat and straighten, but every time you hit it to straighten it I'll leave a crease. What have I got to lose apart from a bent rid and an expensive bodgy size spherical bearing that doesn't fit anywhere else :o
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Drill a hole into a piece of hardwood and bevel the opposite ends of drilled hole @ 45 degrees . Place the shaft or rod in the hole and apply even pressure down or up to suit , before the bend - centre of bend - and after.
Most of mine are bent cold
If heat is applied it should be on the stretched side only
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might be worth sending this guy a message. He dug up a NOS one for my bike.
http://stores.ebay.com/NW-Vintage-Cycle-Parts
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Thanks Mainline - I have got many parts off him and have to admit that I have not tried the NOS path yet as I assumed the stocks would have been used up decades ago. I'll pop over there and have a look.
Any chance a drawing or some more instructions Oldfart. My direction following has never been the best.
BTW I notice a few photos of a very attractive looking RM with a 4 stroke in it at Tamborine. The bloke riding it looks to know what he's doing ;) ;D ;D How come the number on the plate is 90 ?? Are you getting a discount for bulk with Brad ??
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NFG on the NOS I'm afraid - tried wallet bandit, S and S and NWVCP - all to no avail.
I will try oldfart's method (or my interpretation of it) and see what happens. Otherwise I will try the wanted section ::)
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put it on the other way round then ride the bike like you stole it an presto ;D it will bend back the other way. ::) jimson
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Replacing would be the easiest, but if shove comes to push and you get stuck I reckon cut and hut would the way to go. If you measure the dia I'll check some of the frame rails that I'm about to 'recycle' to see if I have the right dia and length, if you want.