Article View: rec.models.rc
Article #1922Re: Engine problems
From: Evil Engineer doin' it the Cowbo...
Date: Tue, 05 Jan 1993 20:26
Date: Tue, 05 Jan 1993 20:26
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>>>>> On Tue, 5 Jan 1993 13:06:38 GMT, wwebster@bnr.ca (Bill Webster) Bill> said: Okay. I'll bite. What is a "stuffer" backplate and Bill> where do you purchase them? I expect it's a new backplate Bill> to decrease crankcase volume, thus increase crankcase Bill> pressure. As far as I understand, that is precisely what it is. My information came from _Round & Round_, the Tulsa Glue Dobber's newsletter. Apparently there is also a special hemi-head version of the venerable Fox .35 available now too. (It must be custom machined..) The fellow mentioned in R&R is Brian Holzwarth of Cedar Knolls, New Jersey. He and his brother Carl own a business that deals in model airplane stuff. They can be reached at: C.E.H. Products, Inc. 24B Mercer St. Dover, NJ 07801 Tel. 201-328-3545 Fax. 201-328-4292 Bill> And, where do you get the pointed needle valve which still Bill> fits the original Fox stunt spray-bar? That is a mystery to me. They seem to talk about the tapered NV like it uses the stock spray bar, but this might not be the case. Bill> I've always found the Fox flattened needle valve works fine Bill> as long as it never gets bent. I cut the needle valve short Bill> and put a 90 degree bend in it. This way it avoids meeting Bill> terra firma. Besides, it's the cheapest spray bar assembly Bill> you can buy. But, I do wish the original Super Tiger Bill> assembly was still available. The one from Kustom Kraftsman Bill> is okay but very expensive and you have to use his needle Bill> valves (also expensive). Cheap, plus available. The real problems we had with them I believe were due to air leakage around the hole through the engine case. I've seen more than one Fox .35 that wouldn't start and run without fiddling with the NV magically "fixed" with a short section of fuel line jammed on the spraybar assembly to seal that hole. I too doubt if the flattened NV is really the problem, although I suspect the tapered NV has a finer adjustment range. I personally like the OS FP needle valves, with the spring and knob removed. They are fairly cheap ($5 - $6), available, and consistent quality. I had bad luck on the KK assembly on a Dixon-modified OS-40FPS once and have never messed with one since, although they appear to be of fine quality. (They also require drilling the case, which ruins it for smaller diameter NVs..) Bill> Bill Webster (WWEBSTER@BNR.CA) L. "Yeh, Buddy.. | larry@psl.nmsu.edu (Larry Cunningham)| _~~_ I've got your COMPUTER! | % Physical Science Laboratory | (O)(-) Right HERE!!" | New Mexico State University | /..\ (computer THIS!) | Las Cruces, New Mexico, USA 88003 | <> -------------------------------------------------------------------------- Disclaimer: Opinions expressed here are CORRECT, mine, and not PSLs or NMSUs.. Oh sure, we could do it the _easy_ way. But it just wouldn't be the COWBOY WAY.
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<LARRY.93Jan5132642@rock.psl.nmsu.edu>Path:
arc1-ca.pugleaf.net!sparky!uunet!gatech!rutgers!flop.ENGR.ORST.EDU!gaia.ucs.orst.edu!umn.edu!lynx!nmsu.edu!opus!larryReferences:
<seanm.31m2@terapin.com> <725976649snz@harrier.demon.co.uk> <LARRY.93Jan4085054@peak.psl.nmsu.edu> <wwebster-050193075910@47.220.4.39>Show Full Headers
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Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!rutgers!flop.ENGR.ORST.EDU!gaia.ucs.orst.edu!umn.edu!lynx!nmsu.edu!opus!larry From: larry@rock.psl.nmsu.edu (Evil Engineer doin' it the Cowboy Way) Newsgroups: rec.models.rc Subject: Re: Engine problems Message-ID: <LARRY.93Jan5132642@rock.psl.nmsu.edu> Date: 5 Jan 93 20:26:42 GMT References: <seanm.31m2@terapin.com> <725976649snz@harrier.demon.co.uk> <LARRY.93Jan4085054@peak.psl.nmsu.edu> <wwebster-050193075910@47.220.4.39> Sender: usenet@nmsu.edu Followup-To: rec.models.rc Organization: New Mexico State University, MetaPhysical Science Laboratory Lines: 59 In-Reply-To: wwebster@bnr.ca's message of Tue, 5 Jan 1993 13:06:38 GMT