Tach Race 2012 New Announcement--12-9-11--Check First Posting !

Here's a portion of the email I received from Chris, the previous Tach Race C.D. The 'group' he refers to is the .049 Collectors Group on Yahoo.

If some of this seems redundant please excuse it, but both sites are constantly getting new members, so the info may STILL be useful to some.
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There are some files on hopping up the reed valve engine in the file section of the Group. I followed the directions on one of the articles in the 90's and had two very strong Mouse Racing engines from new, stock Golden Bee's in which my son was competitive.

The basics are a slight enlarging of the reed intake venturi on the backplate, raising the compression with a Tee Dee head, using Tee Dee piston/cylinder set, and use of a shim to get the cylinder shoulder to exactly meet the piston top when at the top of stroke. From there three thin head gaskets are usually OK to start with and then one can see by running the engine if it needs reduced or increased compression and adjust accordingly. Air leaks are handled by using a piece of silicone fuel tubing on the needle valve and a new gasket set, and there are better reeds than the old brass cross jobs guys either using the mylar or other metal ones (I can't remember the material).

Prop and fuel are the constant for the event so your testing can be done with the prop and fuel to be used and guessing as to the weather at time of test.

Sending one un-run would be pushing it, but several that were sent to me were only run once. I think if the engine was put together properly it would run fine.

I might send an engine, I think I have a Mouse with a busted crank I could repair, just to support the effort. Thanks for your accepting the CD mantle, Kim

Building a little beast.

[img][/i
 2012 COX PROXY TACH RACE 

January 7th
("Rain Date January 8th")

All engines to be received by Thursday, January 5th


Fuel used will be Powermaster 30 nitro/20 oil 50/50 castor synthetic or equivalent.
Prop for all classes: Cox ‘Competition’ gray 5”x3” supplied by COX INTERNATIONAL


Unlimited
Any combination of Cox parts, reed or rear rotor. Any porting, grinding, chopping, you think will work. Any head/glow plug or glowhead, RR-1 or Rear rotor type of rear inductionsystems are fine. NO front induction TD/Medallion crank/crankcase. NO Cyclon, VA, & Norvel stock or modified to reed induction. Intent is that these be Cox-based engines like the Black Widow, Sure-Start, Space Hopper, RR-1, Space Hopper, etc.
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Mouse 1
Any AMA legal Cox rear reed, with tank. Except no Cyclon conversion. See AMA rules for more info.
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Novice
Novice class open to any unaltered, stock 'Hobby' engine. This would include, but not limited to: Golden Bee, Babe Bee, Black Widow, Silver Bee, Sure Start, Space Bug, Etc.. Engines excluded would be a KillerBee or Venom or any modified engine with nonstandard components, for example if someone sends in a Black Widow with Tee Dee cylinder and/or Nelson head the engine would be moved to the Mouse 1 category.

Contest Director would have the final determination of class placement.

Contestants will send engines (Limit one engine per class) in a returnable box with return label filled out (no priority mail) plus adequate funds to cover
return shipping. Please send email to: flynkim@yahoo.com for mailing address.mg][table]

Since my engine does not have a tank and is not stock, looks like I will go into unlimited.

Bernie maybe enough props for each engine to keep one
How many gaskets have you got on the over compressed beast?

Cool Bernie.
I am entering the novice class.
I always thought that a 5 fin adapter would give the best performance.

I am going to try and run my engine with the help of Mr. Rusty. It is nearly complete. Good thing it only takes 3 days to get to Kim's location via USPS.

I seem to have lost an engine with my competition prop and spinner.

microflitedude wrote:I am going to try and run my engine with the help of Mr. Rusty. It is nearly complete. Good thing it only takes 3 days to get to Kim's location via USPS.

I seem to have lost an engine with my competition prop and spinner.

And my engine has become slightly hard to turn for some reason
But i will get that sorted in time for shipping.

nitroairplane wrote:

microflitedude wrote:I am going to try and run my engine with the help of Mr. Rusty. It is nearly complete. Good thing it only takes 3 days to get to Kim's location via USPS.

I seem to have lost an engine with my competition prop and spinner.

And my engine has become slightly hard to turn for some reason
But i will get that sorted in time for shipping.

Possibly you burred the cylinder? I have done it about three times before realizing not use wrenches in the exhaust ports.

I have never used a wrench on this engine and it was new when i got it.

Cox International wrote:Ladies and Gents,

I have been waiting to hear from someone how many of the 5x3 grey props are needed and where to send them.

Air mail from here to the USA takes 2 weeks at best and longer during the Christmas season. We are running out of time so, if you want the props, the ball is in your court

Also, if I can get my overcompressed and overhyped engine to run properly, I will include it for the "unlimited" class. I finally did get it to run and it turned 22k+ on 25% nitro and a 5x3 prop but required an electric starter to get it going. Sometimes one can overdo mods I guess.

Bernie
www.coxinternational.ca

Sorry Bernie ! Guess Mark and I thought eaach other was covering this. For my purposes, I'd figure three would give spares for any problems that might occur. I'd be happy to include any complimentary props in the return package, but am not sure at all of what the total will be.

My count, so far is at about six engines confirmed, but I'm sure there will be more.

shell shock wrote:im not going to need luck for the compition (its all in fun) i need luck in waiting for canada post.... damn snail mail... why cant we email this stuff yet?

I ordered from Cox Int. last Thursday and got it this Tuesday!

nitroairplane wrote:

microflitedude wrote:I am going to try and run my engine with the help of Mr. Rusty. It is nearly complete. Good thing it only takes 3 days to get to Kim's location via USPS.

I seem to have lost an engine with my competition prop and spinner.

And my engine has become slightly hard to turn for some reason
But i will get that sorted in time for shipping.

If it's all new, you may have glazed it with varnish. New ones frequently get it while running full speed after break-in. De varnish it once and it's good to go... or so I read.

The one from Southwest Missouri?

microflitedude wrote:The one from Southwest Missouri?

Cox International wrote:Ok Kim,

Why don't I send 2 dozen props on Monday, together with my engine. There will be no need to return anything and you are free to auction off the engine and/or props when done and put the $$'s towards whatever you like, including your expenses.

I still need an address, however. We have a few "kim's" as customers but which one are you

Bernie
www.coxinternational.ca

Thanks Bernie !!

Appreciate this great contribution!

I'm Emailing my address to you now!

I am in.
Novice class.

That is awfully kind of you Bernie.
I think Kim should chose the Killer bee 2 or green hornet.

Thanks Bernie...I'd assumed that the donated engine would be the Novice Class prize, sorry if my wording confused the intent...reading and typing on the go can cause problems!

Since Nitro's is the only suggestion, I guess the Killer Bee 2 would be a good 1st for the Unlimited.

Thank you for the support of the Race!