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Author Topic: Expansion chamber repairs  (Read 5368 times)

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oldfart

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Expansion chamber repairs
« on: October 15, 2009, 08:35:53 pm »
Rm 250  1980   chamber that required a new header pipe , white mark on pipe indicates reference point
                   
           
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oldfart

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Re: Expansion chamber repairs
« Reply #1 on: October 15, 2009, 08:41:48 pm »
This image indicates materials reqiured    Musket header pipe ( bought off flea bay for $20-00)
2 inch mandrel 180 u bend   $26-00
First cut is to allow new header to slide up over chamber and show true cut line -
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oldfart

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Re: Expansion chamber repairs
« Reply #2 on: October 15, 2009, 08:47:46 pm »
Cut new header at  dodgey weld ( 90 degree bend that enters head )    clean up new header with die-grinder ( piece in vice ) internal bore - cut 2 " mandrel bend in half  and shorten long leg, cut off piece near my grubby thumb as you will require this at head manifold
« Last Edit: October 15, 2009, 08:50:18 pm by oldfart »
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oldfart

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Re: Expansion chamber repairs
« Reply #3 on: October 15, 2009, 08:59:29 pm »
trim your mandrel bend and shape it to suit entry at head , and add manifold section  which is welded to 90 degree bend
Tack it all together and remove from bike making sure it can be re-installed with ease
 
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oldfart

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Re: Expansion chamber repairs
« Reply #4 on: October 15, 2009, 09:05:35 pm »
End result .....spring lugs are fence wire ( # 8 wire ) bent into shape
I have made the pipe fit closer to down tube , as front guards tend to bend and burn on pipe

materials just under $50-00      labour   4 hours over 3 nights
Time to post this thread   1 hour  ;D
« Last Edit: October 15, 2009, 09:10:04 pm by oldfart »
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Offline Lozza

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Re: Expansion chamber repairs
« Reply #5 on: October 15, 2009, 09:14:34 pm »
That turned out pretty good Stew  ;D
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Offline Rossvickicampbell

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Re: Expansion chamber repairs
« Reply #6 on: October 15, 2009, 09:27:58 pm »
actually very good indeed!

Rossco
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Offline pmc57

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Re: Expansion chamber repairs
« Reply #7 on: October 15, 2009, 09:55:22 pm »
Stew
I thought I recognised that Musket header pipe and the barrel and head finish, then I saw who was the author of the thread and put tow and two together.
Great job Stew, I know where to come for any pipe repair work from now on.

pmc57
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oldfart

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Re: Expansion chamber repairs
« Reply #8 on: October 15, 2009, 10:05:55 pm »
product replacement range .... they do sell to public    ( MS  143   used ) as donour
http://www.musket.co.nz/product.asp?brand_id=1&cate_id=2&Submit2=Search&make_id=11&parttype_id=&model=&partNo=&offset=10
« Last Edit: October 15, 2009, 10:07:35 pm by oldfart »
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DR

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Re: Expansion chamber repairs
« Reply #9 on: October 15, 2009, 11:07:21 pm »
Well.. Well.. Well.. and what do we have here eh Stew :P you saw Roger's TS185 with the Plankman header repair and you just had to go 1 better didn't ya! ;) problem is, your's still looks like the stock pipe ::)
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Offline bazza

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Re: Expansion chamber repairs
« Reply #10 on: October 17, 2009, 03:09:06 pm »
Stu you old duck shooter,nice job.You cant take the Kiwi out of the boy,only a kiwi would use #8 fencing wire
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Offline BJJ

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Re: Expansion chamber repairs
« Reply #11 on: October 17, 2009, 03:11:09 pm »
Excellent addition to this forum.  Thanks for posting!
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