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Post  getback Wed Oct 07, 2015 11:15 am

any one tell me what brand these babys are got them in a lot buy, looks like .049 size  and what the heck is that dowel for ?? It was all in one bag so presume it goes with them .  Hi comp. inserts what kind ??  Glow_p10  Hi comp. inserts what kind ??  Glow_p11  Eric Very Happy
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Post  Surfer_kris Wed Oct 07, 2015 1:28 pm

It is a little hard to tell without any dimensions but the shape kind of resembles the Rossi .15 ones to me.
If they are smaller It could possibly be for the MP Jet .061. It doesn't look like the Norvel ones, but would need more details to be sure. The Webra speed .12 (1.8cc, non ABC) also had inserts etc.

The tool could possibly be for removing ball bearings or something completely unrelated to RC...
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Post  fit90 Wed Oct 07, 2015 2:35 pm

The little "skirt" on the insice cylinder portion of them makes them look like they could be MP Jet glow plugs. No way to know without dimensions.
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Post  getback Wed Oct 07, 2015 2:53 pm

Better pics nelson 15 I another bag that came in the lot and some alum. conn. rods The Cox .049 is just reference Hi comp. inserts what kind ??  Nelson12 Hi comp. inserts what kind ??  Nelson13 I don't have a MP Jet . Eric
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Post  Surfer_kris Wed Oct 07, 2015 3:57 pm

So, I still think it is for the Rossi .15 or possibly the Cox Conquest, the Rossi one should fit in both.
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Post  getback Wed Oct 07, 2015 7:31 pm

I can live with that Thank You!! That way I know if need to keep them or move them along , I have no Rossi Sooo ! Eric
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Post  Surfer_kris Thu Oct 08, 2015 1:03 am

To be more certain, you can measure the diameter of the lowest part that goes into the cylinder. It will be very close to the bore diameter of the cylinder.
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Post  RknRusty Thu Oct 08, 2015 1:11 am

If they turn out to be MP Jet .061 plugs, I would like a couple of them. I'll take a look at what mine look like tomorrow.
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Post  OVERLORD Thu Oct 08, 2015 2:04 am

Eric, I measured the dimensions of a new Conquest insert:

Top diameter: 13 mm
bottom diameter: 14,9 mm
edge thickness: 1,85 mm

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Post  getback Thu Oct 08, 2015 12:34 pm

Conquest  
Top diameter: 13 mm
bottom diameter: 14,9 mm
edge thickness: 1,85 mm
 My measurements are
top 0.54 = 13.716 mm                                                                                                                                             bott.  0.574= 14.5746 mm                                                                                                                                        thick  0.056 = 1.4224 mm                                                                                                                                         so that's pretty close with my HF micrometer // If not Conquest would be .15 size engine ?? I for got to as Thank You Lieven for taking your time to measure that hd. for me , Eric


Last edited by getback on Thu Oct 08, 2015 12:50 pm; edited 1 time in total (Reason for editing : to say Thank You)
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Post  Ken Cook Thu Oct 08, 2015 4:20 pm

Several Russian engines use those Rossi style plugs as well. Ken
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Post  Surfer_kris Thu Oct 08, 2015 4:40 pm

Yes, certainly, there is the Uctkam and MDS etc. too, but the electrode is a little different on those as I remember it.
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