T.T. .40 Pro shim removal???

T.T. .40 Pro shim removal???
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T.T. .40 Pro shim removal??? - 7/21/2003 10:21:38 PM

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From: Calabasas, CA, USA
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Hi guys. I've been told by many folks that I should remove the head shim on the T.T. .40 after the engine is broken in. Well, I've run 5 tanks through it with 2 total flights. The engine ran great the first two flights. I tached the engine on the ground before the second flight and it was achieving 15,700. I know this engine should run well over 16,000 so it's time to remove the shim.

I removed the head and found no shim whatsoever. Am I missing something? There simply is no shim present.

HELP!!

TIA

Spence

Its there - 7/22/2003 2:00:57 AM

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From: Kingman, AZ, USA
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If you bought the engine new although very deceptive. Its aluminum and the same color as the casting and quite deep. You will find by probing a bit with a #11 blade from the edge of one of the head bolt holes that you can catch the edge and start working it up and is a tight fit.

Its not unusual with a new TT to only see numbers like 15,700 on a 9X6 at first. It can take quite a while for them to really get good and the best way to do that is fly and practice. Practice is far more important at the early stages than 'R's. All of my TT's in the past did not really shine untill the were almost worn out. Just a personal observation.

John

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Thanks - 7/22/2003 2:18:43 AM

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Thanks John!

Looking forward to the August 10th basin race.

It'll be my first one.

Are you planning to attend?

SM

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First race - 7/22/2003 3:22:23 AM

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Yes, what a memorable event that will be for you particularly at the very well run basin events put on by Barry and the boys. Its an excellent inaugural event for you and being a one day event will take a little of the pressure off. You are fortunate being so close to an activity center. I do have to warn you though. This stuff can become so infectious that it starts permeating all your thoughts throughout your day (hard on jobs)

Yes I am going to make the effort to attend this one and look forward to meeting you, I,am easy to spot in my wheelchair.

John

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Cool - 7/22/2003 4:53:24 AM

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Great!

Looking forward to meeting you!

I'm well aware of the "addiction factor" caused by RC.

A couple of years ago I was really into turbines and just couldn't get enough so yes, I do know what you mean!

I have been practicing as much as possible with the Predator so hopefully I wont make a complete fool of myself. I really don't know what to expect. Looking forward to it none-the-less.

See you soon!

Spence

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First Race - 7/28/2003 9:48:57 PM

Fly Fast n Left

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From: Los Gatos, CA, USA
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Hi,
Well the race at the Basin will be my first attempt at AMA style racing. I have been flying two pole racing for a while and decided to try something different.

My tt .40 will turn the 9X6 at a bit over 16k, but I have not even bothered to remove the head gasket. Should I pick up some rpm's with a thinner gasket?

Jacob

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T.T. .40 Pro shim removal??? - 7/29/2003 12:24:54 AM

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From: Phoenix, AZ, USA
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>>Should I pick up some rpm's with a thinner gasket?

All my TT .40s did. The older ones picked up more RPM than the newer ones.
I used to put in a thin gasket but now I just remove the stock thick one and go with none.

It�s easy to check. Tach the engine and remove the gasket and tach it again. The process takes about 10 minutes.

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head shim - 7/29/2003 12:42:05 AM

Fly Fast n Left

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PJ_TankPilot,
Sounds like something to try. I have two of the older engines that are matched (twin) so I will try it with no shim.

How many rpm's should I pick up?

Thanks,
Jacob

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T.T. .40 Pro shim removal??? - 7/30/2003 12:08:20 AM

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>>How many rpm's should I pick up?

I have a log somewhere with this information. I will try to find it. I think it was 200 � 300 RPM more.

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T.T. .40 Pro shim removal??? - 7/30/2003 4:10:54 AM

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From: Indianapolis, IN, USA
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Flying a cleaner course will get you more than any extra power you'll find in these engines. I have first hand experience. My engine ran great and the guy that hit his lines every time beat me easy. But I guess every little bit helps.

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clean lines - 7/30/2003 10:13:30 PM

Fly Fast n Left

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basmntdweller
Flying a cleaner course seems to be the way to do well in any type of racing. So in order to get some practice I am constructing a set of pylons to aid in my practice. They are very simple 5 gallon buckets that have cement in them that hold a 15' tall pole. Hopefully they will be done tomorrow.

This being my first race would I be considered a 9 lapper?

Thanks,
Jacob

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T.T. .40 Pro shim removal??? - 7/31/2003 12:39:23 AM

bl10

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From: Chatsworth, CA,
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yep. So long as your are flying APRA

Barry

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9 laps - 7/31/2003 3:04:55 AM

Fly Fast n Left

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Barry,
Thanks for the info. As I understand it if I break a certain time then I become a 10 lapper? This if my first race so I don't know a whole lot!!??

Thanks,
Jacob

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1:45:00 - 7/31/2003 3:45:14 AM

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Jacob-

I believe (and Barry please correct me if I'm wrong) the time to beat is 1:45:00 to become a 10 lapper.

Spence

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Questions!!!??? - 7/31/2003 4:20:24 AM

Fly Fast n Left

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Spence-
Do you have any idea of what the average times are in APRA? If I do reach that 1:45 mark during the race do I still fly 9 laps the rest of the day, or do I now have to fly 10 laps? Sorry for all the dumb questions!!

Thanks,
Jacob

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Times - 7/31/2003 4:51:02 AM

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Hi. I believe once you break the 1:45 mark, you then become a 10 lapper. So basically, you are a 9 lapper until you break 1:45 then once you do, you are never a 9 lapper again.

I too will be a 9 lapper on Sunday. I haven't been able to practice much so hopefully it wont get to ugly!!!

Spence

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T.T. .40 Pro shim removal??? - 7/31/2003 5:09:01 AM

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What is the basis for only nine laps? I think a newbie needs all the laps he can get for practice. That extra lap can't take that much time from the contest plus most of the others will already be in the landing pattern if you are taking 1:45 for 9 laps. BTW, what is a decent time on the long course with a TT40.
basmntdweller

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T.T. .40 Pro shim removal??? - 7/31/2003 5:27:49 AM

bl10

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From: Chatsworth, CA,
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424-APRA 9/10 lap rules are as follows:

By choice, as a beginner, you can fly 9 laps instead of 10 until one of the following