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Old 02-13-2017, 11:53 AM   #11
bengt-olausson
 
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¨Hi Jef. Thank for your kind words.
The steel is SS2541 equal to 34CrNiMoS6.
C 0,3-0,38
Si 0,15-0,40
Mn 06´,60-0,80
P max 0,025
S 0,02-0,035
Cr 1,30-1,70
Ni 1,30-1,70
Mo 0,15-0,30
Hardened to 340-400 Hb.

Bengt


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Old 02-13-2017, 01:10 PM   #12
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Quote:
Originally Posted by bengt-olausson View Post
¨Hi Jef. Thank for your kind words.
The steel is SS2541 equal to 34CrNiMoS6.
C 0,3-0,38
Si 0,15-0,40
Mn 06´,60-0,80
P max 0,025
S 0,02-0,035
Cr 1,30-1,70
Ni 1,30-1,70
Mo 0,15-0,30
Hardened to 340-400 Hb.

Bengt
Thanks Bengt , I use most of the time 42CrMo4 for crancshaft and cilinders (for 2 stroke petrol and diesel engines)

Regards Jef


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Old 02-16-2017, 01:53 PM   #13
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Some more works on the heads.
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Old 03-06-2017, 08:02 AM   #14
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The cylinders is made of stock material.
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Old 03-06-2017, 09:56 AM   #15
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More works on the cylinders & heads.
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Old 03-21-2017, 08:49 AM   #16
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I have done some work on the crankhouse.
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Old 03-26-2017, 11:07 PM   #17
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Very nice work! You are really making some headway.
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Old 03-27-2017, 10:43 AM   #18
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Thank you very much ,
Bengt
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Old 03-28-2017, 12:03 AM   #19
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Very nice work!

Can you tell me about your valve cages. Are they bronze? Pressed in place or held with adhesive like Locktite? I'm interested to see your chamfering tool & the valves when they come along.

ps - just for interest, a 1/4 scale Wright J5 9 radial of the same designer is being built in Japan. He mentioned he had the casting & plans about 10 years before starting.
http://modelicengine.la.coocan.jp/j5140402.html
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Old 03-28-2017, 08:46 AM   #20
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Thanks.
The valve cages is made of bronze and held in place with a nut. Probably I will fix them with Loctite 271 when I assembly the engine.
The Wright Radial is very nice engine. I have the drawings but I never bought any castings. I regret that now.
I bought the castings for the Boxer engine at Christmas time 2016 from a guy that had them for many years, but newer start machining them.


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