Author Topic: Tip for 175 air pipes - make your own  (Read 2044 times)

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Offline Sye

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Tip for 175 air pipes - make your own
« on: January 15, 2017, 08:42:57 AM »
I had some trouble sourcing replacement air pipes for my 175HS. I ended up making my own from stainless tube and then polishing to a mirror finish.

I bought a 500mm length of stainless 45mm (1.75") diameter stainless tube and cut it into 86mm lengths. I then polished them using a mop and three grades of grit. I left two round and squeezed two in the vice to make them oval. Well impressed with the result and they work out at around £3.00 ($4.00) each, result.
Be nice - feel good

Offline rwgibbon

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Re: Tip for 175 air pipes - make your own
« Reply #1 on: January 15, 2017, 09:11:21 AM »
Sye,

"Necessity is the mother of invention."

In seems more and more we will be doing like
you did regarding the parts we need.

Thank you for posting what you did.

Randy

Offline BRT-GTR

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Re: Tip for 175 air pipes - make your own
« Reply #2 on: January 15, 2017, 09:35:28 AM »
  Sye...............Respect !!   Always a great deal of satisfaction from having a go and it works, great saving as well, proper job  ;D, photo ?

      Just stripped and repaired the ignition switch and front brake switch on the GTO. Now work a treat.             
            Brian.
« Last Edit: January 15, 2017, 09:39:16 AM by BRT-GTR »
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Offline Sye

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Re: Tip for 175 air pipes - make your own
« Reply #3 on: January 15, 2017, 10:15:28 AM »
Photo attached as requested by Brian. The left side two are the round ones.

As I understand it, they were originally round and then changed for the oval ones?
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Offline BRT-GTR

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Re: Tip for 175 air pipes - make your own
« Reply #4 on: January 15, 2017, 10:32:18 AM »
       Photo didn't take long !! ;D      I would be equally proud of those and even better in SS. Did you machine to length or hand cut.     Brian
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Offline Sye

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Re: Tip for 175 air pipes - make your own
« Reply #5 on: January 15, 2017, 10:57:56 AM »
Hand cut using a mitre block and hacksaw Brian, then dressed and chamfered the edges slightly using a file to get rid of any sharp bits.
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Offline BRT-GTR

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Re: Tip for 175 air pipes - make your own
« Reply #6 on: January 15, 2017, 11:41:23 AM »
  Even more respect !!     Sounds simple to hand cut tube square but it isn't, especially with large diameter, thin wall.    Brilliant job, they look like high quality, factory made items. Mega.   8)                                           Brian.
« Last Edit: January 15, 2017, 11:45:13 AM by BRT-GTR »
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Offline skiri251

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Re: Tip for 175 air pipes - make your own
« Reply #7 on: January 17, 2017, 05:14:11 PM »
Nice!

I opted for chrome plated brass tail piece sold for under sink plumbing.
At 1-1/2 inch OD it's smaller than stock (2"?).

Do you think that affects the engine performance?


Offline OldSwartout

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Re: Tip for 175 air pipes - make your own
« Reply #8 on: January 17, 2017, 09:37:46 PM »
1 1/2 in. dia. feeding an 18mm carb (22% of the area)? It'll never know the difference.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

 


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