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Engine basics => Engine set up tips => Topic started by: Jim Treace on July 30, 2009, 05:02:18 PM

Title: Looking for OS MAX-S 30 RC
Post by: Jim Treace on July 30, 2009, 05:02:18 PM
Anyone know where I can get an OS MAX-S .30 RC ? I have one and converted it to C/L and now need another. I Tried Ebay but all I can find are .35's. My new build has engine mounts, cowling all completed to fit the .30 and then I went and damaged it. 3/32" drill slipped and punched a hole in the casing. Don't think it can be repaired.
Thanks,
Jim
Title: Re: Looking for OS MAX-S 30 RC
Post by: John Miller on July 30, 2009, 05:09:11 PM
I b elieve the .35 and .30 share the same case.
Title: Re: Looking for OS MAX-S 30 RC
Post by: RandySmith on July 30, 2009, 06:33:10 PM
Anyone know where I can get an OS MAX-S .30 RC ? I have one and converted it to C/L and now need another. I Tried Ebay but all I can find are .35's. My new build has engine mounts, cowling all completed to fit the .30 and then I went and damaged it. 3/32" drill slipped and punched a hole in the casing. Don't think it can be repaired.
Thanks,
Jim

I may have a new one, or could build a new 30 S

Randy
Title: Re: Looking for OS MAX-S 30 RC
Post by: Jim Treace on July 30, 2009, 06:42:25 PM
Randy,
I'll drop you a pm about the new one (or built up if necessary).
Jim
Title: Re: Looking for OS MAX-S 30 RC
Post by: James C. Johnson on July 31, 2009, 10:12:06 AM


I think I have one used one left..  would let it go .. can post pics if you are interested..

Jim
Title: Re: Looking for OS MAX-S 30 RC
Post by: RandySmith on July 31, 2009, 01:58:43 PM
Randy,
I'll drop you a pm about the new one (or built up if necessary).
Jim

Hi Jim

I did have a new one plus many parts
see your PM

Also i maybe able to repair you old one

Randy
Title: Re: Looking for OS MAX-S 30 RC
Post by: W.D. Roland on August 13, 2009, 12:31:18 PM
The .30 and .35 are the same except bore.
The heads do not interchange.

I have some new piston/sleeves and some other parts.


David
51336
Title: Re: Looking for OS MAX-S 30 RC
Post by: FLOYD CARTER on August 13, 2009, 12:57:50 PM
Wait a minute!  A small hole in the crankcase is easily repaired with JB Weld.  Pressures are very small, so it should hold forever, if the part is thoroughly cleaned before the JB Weld. 

I could list dozens of similar repairs I've done with JB Weld, and all were successful.

Floyd
Title: Re: Looking for OS MAX-S 30 RC
Post by: RandySmith on August 13, 2009, 01:55:19 PM
If It is in a place that would let you, the best thing is to tap it with a 4-40  6-32 whatever and screw in a set screw with either RED locktite  or JB weld

Randy
Title: Re: Looking for OS MAX-S 30 RC
Post by: W.D. Roland on August 13, 2009, 06:36:34 PM
A local flier JB welded a Johnson .35 combat cylinder back on the crankcase, actually the upper and lower crankcase back together and ran it for years like that.


David
51336
Title: Re: Looking for OS MAX-S 30 RC
Post by: Jim Treace on August 13, 2009, 07:36:20 PM
If It is in a place that would let you, the best thing is to tap it with a 4-40  6-32 whatever and screw in a set screw with either RED locktite  or JB weld

Randy
Yup, I already did this. Cleaned carefully, then cleaned again. Tap for 4-40 screw w/JB Weld. Holds fine and engine runs like it didn't know what happened. I had to surface grind down 4-40 head so I could fit the cowling bolt. Not much space under the engine mounts with the engine in place.
However, Randy, I will use the new one from you and keep my repaired tapped one as a back up or on my next project.
Jim
Title: Re: Looking for OS MAX-S 30 RC
Post by: Jerry Reider on November 20, 2009, 02:56:27 AM
Anyone know where I can get an OS MAX-S .30 RC ? I have one and converted it to C/L and now need another. I Tried Ebay but all I can find are .35's. My new build has engine mounts, cowling all completed to fit the .30 and then I went and damaged it. 3/32" drill slipped and punched a hole in the casing. Don't think it can be repaired.
Thanks,
Jim

There's an O.S. Max-s .30 R/C Engine, No Muffler on Ebay right now.  Search for O.S. Max 30 and you'll find it.  Looks pretty nice.  Hurry only 2 days left on the sale.  I just bought a really nice O.S. Max .35 R/c off Ebay.  Great deal.  Very little wear ,clean and well taken care of.  I have 2 other 35 Max-s's that just keep on running strong.