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Post  altidsulten Wed Mar 07, 2012 2:05 pm

I was cleaning some parts for a couple of Queen Bees, when i saw one of the cylinders had boostflutes.
I have never seen this before on a QB???

Regards
Thomas Pedersen
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Post  Surfer_kris Wed Mar 07, 2012 2:09 pm

Do you have a picture?
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Post  Cox International Wed Mar 07, 2012 2:15 pm

The 074 had issues.

What Cox did with warranty returns was stick a .09 cylinder/piston set on them. Check to see if that is the case.

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Post  Surfer_kris Wed Mar 07, 2012 2:18 pm

The lower conrod bore is different though on the .09, or they make a special conrod for them?
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Post  altidsulten Wed Mar 07, 2012 2:20 pm

Here is a pic:
Queen Bee with boostflutes Queen_10
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Post  Surfer_kris Wed Mar 07, 2012 2:25 pm

Well, I sure haven't seen that on any of mine. I only have four of them though...
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Post  altidsulten Wed Mar 07, 2012 2:30 pm

The 2175 (.09TD) cylinders i have (NIB) have an extra groove at the base of the cylinder. This does'nt.
As Chris also noted, the lower end is bigger on the TD than on the QB.
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Post  Cox International Wed Mar 07, 2012 3:00 pm

The difference on the 09 is the bore and one would have to take calipers and measure the OD of the piston.
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Post  altidsulten Fri Mar 09, 2012 7:17 am

I have just checked the bore, and both are .4635", so they are both QB's.
They cyl. head on the one with boostflutes is a little differant too. The center hole is smaller (allmost no space to get a tool in to remove the glowplug), but as i bourght it used i have no idea if it has been changed.

Regards
Thomas
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Post  PV Pilot Fri Mar 09, 2012 8:42 am

A King Bee.
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Post  altidsulten Fri Mar 09, 2012 8:56 am

Small Cox Logo King Bee

Sounds good! i like it.

I wonder how many of you that got one too without knowing it?!
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Post  dankar04 Fri Mar 09, 2012 9:08 am

I never tear a new engine down to check it out. Gaskets and seals are only new once. Extra futes looks good.
Dan
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Post  altidsulten Fri Mar 09, 2012 10:51 am

I don't do that either, unless it is a chinese gas engine, where you have to do it to get all the dirt out and to check it for correct assembling. I have had a coulpe of SPE/Turnergy/no-names and i reccomend others to do the same on those.

These QB's was some i had laying around, i was cleaning them as they looked like they had been drowned in castor and then burried in earth.

It would sure be nice if i could find out how many they made of these?
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Post  engine049 Fri Mar 09, 2012 11:08 am

Did you buy this engine in 2009 from engine049 on ebay or around 2009 form bernie or matt or reg? If so it was one of the engines I sold someone from the R*D dept therefore its a 1 of a kind test eng
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Post  PV Pilot Fri Mar 09, 2012 12:17 pm

engine049 wrote:Did you buy this engine in 2009 from engine049 on ebay or around 2009 form bernie or matt or reg? If so it was one of the engines I sold someone from the R*D dept therefore its a 1 of a kind test eng

I was going to suggest that,,,but you beat me to it
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Post  altidsulten Fri Mar 09, 2012 2:18 pm

No, i bourght it (well) used last year.
It could still be one of those RD engines, did you check them if they had the boostflutes? Still i wonder if there is more out there, it seems like an easy fix for Cox to boost the performance on these engines
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Post  engine049 Fri Mar 09, 2012 4:21 pm

altidsulten wrote:No, i bourght it (well) used last year.
It could still be one of those RD engines, did you check them if they had the boostflutes? Still i wonder if there is more out there, it seems like an easy fix for Cox to boost the performance on these engines

I only have 1 cyl left and its normal, I wish I would have looked way back yonderwhen....
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