Re: 051 Killer Widow

WingingIt74 Wed Feb 01, 2012 12:04 pm

PV Pilot wrote:
WingingIt74 wrote:Any idea why the fuel is sloshing around only near the pick-up tube in the tank, or is that normal?

You have a clunk/line tuning fork issue with the vibrations. Some foam under the tank and rubber bands to hold it in place. The zip tie holding it down will transfer vibrations as well.

Once the tank is insulated better,, it might pick up some more.

It's only vibrating the fuel at the pickup, not else where in the tank. I didn't know if the fuel surges in the line like AC current?? I'll move the tank off the mount to see if it changes tonight.

WingingIt74 Wed Feb 01, 2012 8:17 pm

Run #3:

Had my son Brandon hold the fuel tank, no vibration in the tank. I also had my fastest run.

19,517

PV Pilot Thu Feb 02, 2012 1:37 pm

Excellent!, that's twisting pretty good . You might have been putting some foamed/bubbles up that line as it vibrated in the tank, like a tuning fork.

WingingIt74 Sat Feb 11, 2012 9:05 pm

Holy Cow! I changed the head to the 5-fin from CoxInternational and added for a total of 4 spacers.

Evened out at 20,7xx - 20,864 and maxed when it ran out of fuel at 21,069

Affraid or WOW!

dckrsn Sat Feb 11, 2012 9:50 pm

Outstanding #'s Travis. 051 Killer Widow - Page 2 1848667513

Way to hit the sweet spot.

Not a bad looker either.

Bob

**Cribbs74** Sat Feb 11, 2012 10:18 pm

WingingIt74 wrote:Holy Cow! I changed the head to the 5-fin from CoxInternational and added for a total of 4 spacers.

Evened out at 20,7xx - 20,864 and maxed when it ran out of fuel at 21,069

Box it up, your ready for the tach race!

Good job.

nitroairplane Sun Feb 12, 2012 4:01 am

Are .051s allowed in the tach race?

**Cribbs74** Sun Feb 12, 2012 8:37 am

nitroairplane wrote:Are .051s allowed in the tach race?

There was one in the last one......

I think it was unintentional though.

Not sure what the rules state. The difference between the two is so minute.

I bet if he popped on a .049 cylinder assy the numbers would be the same.

microflitedude Sun Feb 12, 2012 9:43 am

cribbs74 wrote:
nitroairplane wrote:Are .051s allowed in the tach race?

There was one in the last one......

I think it was unintentional though.

Not sure what the rules state. The difference between the two is so minute.

I bet if he popped on a .049 cylinder assy the numbers would be the same.

Probably not, you would need to carefully select a very good fitting cylinder and piston. Looks like he has a good one.

WingingIt74 Sun Feb 12, 2012 2:10 pm

5th Run

nitroairplane Sun Feb 12, 2012 2:18 pm

WingingIt74 wrote:5th Run

Probably get higher RP with a stiffer prop, or maybe less Huh...

fit90 Sun Feb 12, 2012 6:22 pm

That thing SCREAMS! Do you have plans to put it on a plane?

WingingIt74 Sun Feb 12, 2012 6:33 pm

Not sure as of yet, but probably not, maybe just keep this little speed freak just for fun Smile

microflitedude Sun Feb 12, 2012 6:37 pm

WingingIt74 wrote:Not sure as of yet, but probably not, maybe just keep this speed freak just for fun

You've already topped everyone in the Tach Race. Smile

WingingIt74 Sun Feb 12, 2012 6:44 pm

microflitedude wrote:You've already topped everyone in the Tach Race.

Somebody had too Smile

**RknRusty** Sun Feb 12, 2012 8:36 pm

I bet it would run a tad faster without that sticker on it. At that speed it's really affecting the balance. Kind of tough on the rotating assembly.

But, That video makes me feel good about the pair of Killer Bees I plan to build this coming flying season. I just bought a couple of those heads from Cox International, one red and one silver.

**RknRusty** Sun Feb 12, 2012 8:48 pm

I posted this in Bernie's yellow prop thread,but just one concern. That sticker is affecting the balance at speeds like that and is fairly rough on the rotating assembly. It might run faster and smoother... not that it's not now. Very nice job putting that one together. Did you do any polishing? And how did the piston/cylinder feel when it was brand new, tight at the top, or pretty loose? I'm planning to build a pair of Killer Bees this season.

Hmmm, I see my post was moved. Oh well, they're a little different.

WingingIt74 Sun Feb 12, 2012 8:50 pm

The CI sticker or the reflector one?

**RknRusty** Sun Feb 12, 2012 8:53 pm

The CI sticker. I didn't realize it had a reflector on it. That can't be avoided when taching though.

WingingIt74 Sun Feb 12, 2012 8:53 pm

I removed the CI sticker Smile

Here is the reflector sticker.
051 Killer Widow - Page 2 Img_1911

crankbndr Sat Feb 02, 2013 12:24 pm

WingingIt74 wrote:
microflitedude wrote:You've already topped everyone in the Tach Race.

Somebody had too

Guess you'll need to "take this back"

WingingIt74 Sat Feb 02, 2013 1:39 pm

Yep I guess so....

looperdude Thu Aug 01, 2013 4:49 pm

man i gotta know what kind of cylinder you got on that thing, it looks like a tee dee

WingingIt74 Thu Aug 01, 2013 4:53 pm

I think so, but it has custom porting. It's not as fast as I hoped though.

WingingIt74 Thu Aug 01, 2013 4:58 pm

I may take it back to how it was when I got it, just to see how fast it really was...

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