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Author Topic: Yamaha YZR500 Replica Build  (Read 6837 times)

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Offline calj737

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Re: Yamaha YZR500 Replica Build
« Reply #25 on: June 13, 2018, 06:51:32 AM »
Mild steel parts? Bummer. Would be killer if they were stainless  :(

Even though they are mild steel, you would be very smart to back purge weld them. Any time you can eliminate the atmosphere from your welds, you're far better off. Yeah, I know, they're 2-stroke pipes and will be sooty, but the weld will be much stronger and last far longer.
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'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline simon#42

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Re: Yamaha YZR500 Replica Build
« Reply #26 on: June 13, 2018, 08:48:20 AM »
the good thing about daves pipes is that they always work , he made me a couple of sets for a tz350 in 1978 !
have had plenty more since , just be very careful to keep the lengh the same when cutting and welding . im not a great fan of this engine but it should make a great bike .
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Offline innovativems

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Re: Yamaha YZR500 Replica Build
« Reply #27 on: June 13, 2018, 07:16:45 PM »
Quote from: calj737 on June 13, 2018, 06:51:32 AM
Mild steel parts? Bummer. Would be killer if they were stainless  :(

Even though they are mild steel, you would be very smart to back purge weld them. Any time you can eliminate the atmosphere from your welds, you're far better off. Yeah, I know, they're 2-stroke pipes and will be sooty, but the weld will be much stronger and last far longer.

Agreed on, i wish they were stainless.  But hey, if mild steel was good for Wayne Rainey before he rain titanium chambers, then i guess i can get by with them.  I do wish i had some ti ones. 

Thanks for the advise on back purging them!  Will do!
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Offline innovativems

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Re: Yamaha YZR500 Replica Build
« Reply #28 on: June 16, 2018, 06:22:01 PM »


Finally swapping over to my 80 gallon compressor, so had to put the ole girl outside for a bit.


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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline innovativems

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Re: Yamaha YZR500 Replica Build
« Reply #29 on: December 27, 2018, 08:38:24 AM »
Been slow on updates.  Got my tail section. 


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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline innovativems

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Re: Yamaha YZR500 Replica Build
« Reply #30 on: December 27, 2018, 08:40:10 AM »
So decided I want to do something other then a Rainey replica.  So hello nescafe!


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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline innovativems

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Re: Yamaha YZR500 Replica Build
« Reply #31 on: December 27, 2018, 08:49:33 AM »
Also got my ohlins axial style forks from an Aprilia RSV with brembo calipers for the front.  And am going to go with dymag magnesium wheels after I get my rear wheel width figured out



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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline seanbarney41

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Re: Yamaha YZR500 Replica Build
« Reply #32 on: December 27, 2018, 09:32:05 AM »
You really don't mess around with ordinary parts...
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Offline 754

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Re: Yamaha YZR500 Replica Build
« Reply #33 on: December 27, 2018, 10:29:37 AM »
 I like the blue triple trees. .
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Offline innovativems

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Re: Yamaha YZR500 Replica Build
« Reply #34 on: December 27, 2018, 11:05:48 AM »
Quote from: seanbarney41 on December 27, 2018, 09:32:05 AM
You really don't mess around with ordinary parts...
Haha.  Guilty as charged.  Always wanted to do one of these and my zx7 kawi triple.  Figured might as well go all in


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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline innovativems

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Re: Yamaha YZR500 Replica Build
« Reply #35 on: December 27, 2018, 11:06:19 AM »
Quote from: 754 on December 27, 2018, 10:29:37 AM
I like the blue triple trees. .

You and me both.  They are off a Colin Edwards edition Aprilia RSV mille. 


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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline Stev-o

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Re: Yamaha YZR500 Replica Build
« Reply #36 on: December 31, 2018, 12:04:20 PM »
Quote from: innovativems on December 27, 2018, 11:05:48 AM
Quote from: seanbarney41 on December 27, 2018, 09:32:05 AM
You really don't mess around with ordinary parts...
Haha.  Guilty as charged.  Always wanted to do one of these and my zx7 kawi triple.  Figured might as well go all in


You are all in!  Looking good...
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........
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