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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Redline 53 Head shims.
01-13-2009 04:34 PM  9 years agoPost 1
bboyy

rrApprentice

Sydney- Australia

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Hi there, who has installed the head shims on there redlines, which size as there are two and why? have you noticed any difference in the running of your motors?

Cheers bboyy

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01-14-2009 12:18 AM  9 years agoPost 2
glydrjocky

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Livermore, CA - USA

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.004 here!
I put in a .004 shim on top of the stock head gasket and am running 20% CP. I'm getting good power and no detination or overheating with an MP5 pipe.

The motor comes with a .004 and a .008 shim . I'm happy with the .004 but Dino recommends two shims for 30% to limit overcompression. I'm not sure if he ment two .004 shims for a total of .008 for 30% nitro or if he ment the .004 and .008 together...

Guess we should ask him?

The only people who truly know where the edge lies, are those who have gone over.

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01-14-2009 01:03 AM  9 years agoPost 3
bboyy

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Sydney- Australia

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maybe we should, im actually running a .004 ontop of the standard one that comes on the head. Im flying on sydney with hot summuer days right now with 20% nitro. Im just getting vibes coming out of this motor which is effecting my gyro. so im just thinking to adding the .008 onto of all these or pull out the .004 and add the .008 hopefully smoothen it out?

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01-14-2009 02:32 AM  9 years agoPost 4
glydrjocky

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Livermore, CA - USA

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How's the run out and balance on your fan? I had my O.S. 37 get alot of vibration from trying to go too lean on the low end mixture screw. Mine runs super smooth and I got my run out around .001 on the hub and fan.

The only people who truly know where the edge lies, are those who have gone over.

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01-14-2009 02:39 AM  9 years agoPost 5
bboyy

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Sydney- Australia

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It seemed fine the last time i checked it. Might need to double check it though. Is it best to dial to the fan first? or with the clutch on it? Its a high frequency vibe, especially on idle.

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01-14-2009 02:24 PM  9 years agoPost 6
bboyy

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Sydney- Australia

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Ok today i dial the fan and it was slighly out of wack, so i pulled it off and dialed the crank and that was off by .005. I took out the front bearing and it was notchy and there was some play in it. I will be getting new front and rear bearings (im just changing the rear scince ive got the motor stripped down) to replace them and hopfully it will fix the vibration problems.

Has anybody else had this problem?
Cheers bboyy

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01-15-2009 12:28 AM  9 years agoPost 7
glydrjocky

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Livermore, CA - USA

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Sounds like great finds but how much time is on the engine for the bearings to go south?

The only people who truly know where the edge lies, are those who have gone over.

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01-15-2009 10:51 AM  9 years agoPost 8
bboyy

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Sydney- Australia

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It has over one hundred flight, but i must say it did have a few lean runs which wouldnt help. Today i changed both bearings and the crank dialed bang on. The bearingings did have alot of slop in them and were slightly notchy. I also added the extra head shim so hope fully tommorrow i will be tring it out, hopfully its problem solved. I will report back here and let you all know how it went.

Cheers bboyy

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01-17-2009 03:31 PM  9 years agoPost 9
glydrjocky

rrApprentice

Livermore, CA - USA

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Sounds like your up and running. Where did you get your bearings, are they stock TT or did you use an aftermarket brand?

T

The only people who truly know where the edge lies, are those who have gone over.

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01-17-2009 04:08 PM  9 years agoPost 10
rlmarch

rrApprentice

Titusville, Florida,US

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head shims
I know I been reading here about using head shims on the tt53 when running 30%. I run 30%cp. I have the new carb. Sent the old one back before even running the motor.I live in central Florida so it's hot most the time when I fly. I haven't flown this heli yet. Been to busy. I now have time and are going to break this bird in.
Question if we need these shims why didn't they send them with the engine. If I email TT will they send them to me.
Also I live at sea level and will be using it with a mp5sb.
Thanks for the info.

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01-18-2009 03:04 AM  9 years agoPost 11
AMainMaker

rrKey Veteran

Nappanee,IN

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I am running mine iwth the stock shim without issue.
Jason

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01-18-2009 03:32 AM  9 years agoPost 12
rc.chris

rrApprentice

brunswick, ga. 31525

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I am going to run a new 53 tomorrow,on 30% CP. Should I add the .004 shim or the .008 shim?

http://www.jaxrc.com

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01-18-2009 03:33 AM  9 years agoPost 13
rc.chris

rrApprentice

brunswick, ga. 31525

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I am going to run a new 53 tomorrow,on 30% CP. Should I add the .004 shim or the .008 shim?

http://www.jaxrc.com

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01-18-2009 03:33 AM  9 years agoPost 14
rc.chris

rrApprentice

brunswick, ga. 31525

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I am going to run a new 53 tomorrow,on 30% CP. Should I add the .004 shim or the .008 shim?

http://www.jaxrc.com

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01-18-2009 03:34 AM  9 years agoPost 15
rc.chris

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brunswick, ga. 31525

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Dont know why it put it up 3 times!

http://www.jaxrc.com

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01-18-2009 03:50 AM  9 years agoPost 16
glydrjocky

rrApprentice

Livermore, CA - USA

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Chris, do I have to answer three times or can I just answer once?

This is Dino's quote from a message he sent me recently...

"if you are running 15% use one shim if you are running 30% you need to run two so you are not over compressed"

.004 is working nicely with 20%CP so I'm wondering if the .008 would be enough as its double the thickness of the .004 . Guess you'll have to test and see what works best. Otherwise if you use both shims its a total of .012 your adding.

T

The only people who truly know where the edge lies, are those who have gone over.

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01-18-2009 04:01 AM  9 years agoPost 17
Nalizan

rrApprentice

Coppell, TX 75019

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What is this about shims? I just sent in my carb on a new motor because I found out it was the old version. Now I need shims for my motor to run ok on 30%?

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01-18-2009 04:45 AM  9 years agoPost 18
baddynergy

rrElite Veteran

sierra madre, ca- usa

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I haven't heard about running shims. I have been running 30% since last january and it runs GREAT.

Are they really needed??

**Unattended children will be givin a shot of espresso and a puppy**

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01-18-2009 01:48 PM  9 years agoPost 19
Talron

rrApprentice

Winnipeg, Manitoba - Canada

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Strange, I contacted the Canadian distributor to ask about the new carb and head shims. I was told that my carb which has only the "single nut" on the needle may be the new one. I was also told that the engines did not come with shims. I think he's trying to pull a fast one on me.

Can anyone confirm that the new carb only comes with the "double nut" and should come with shims. This engine is Brand New and I would rather have it up to date than to have to mess around.

Thanks for any info,

Ron

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01-18-2009 03:00 PM  9 years agoPost 20
glydrjocky

rrApprentice

Livermore, CA - USA

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Your main needle thread boss should have small notches cut into the points of the hexnut faces at the base, if its the new carb.

The shims come in a package with directions on their use.

The only people who truly know where the edge lies, are those who have gone over.

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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Redline 53 Head shims.
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