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Author Topic: Tom Lay Super Tigre V60 break in  (Read 1988 times)

Offline Craig Beswick

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Tom Lay Super Tigre V60 break in
« on: April 14, 2021, 11:31:01 PM »
Hi,
I have acquired a new Tom Lay Super Tigre V60. Can anyone help with the break in procedure for this engine?

Thank you in advance
Craig
Ps. Fuel mix and prop size would help.
AUS 87123
"The Ninja"

Online Dan McEntee

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Re: Tom Lay Super Tigre V60 break in
« Reply #1 on: April 15, 2021, 10:40:27 AM »
  Hi Craig;
    Going from memory, since it's been a while since I have read one of his instruction sheets, you start with all castor fuel with 22% to 25% oil content and 5% nitro will do fine. For a prop a 12-4 would give you something to flip it over with and not add much load. A 6 ounce tank will provide along enough run. No muffler. Use a hot type glow plug. Start engine and set it to a high 4 stroke setting and observe what the exhaust looks like. You can do this by just letting the exhaust hit the end of a clean paint stirring stick or your hand if you are careful, and you will probably see some black stuff in it, and make a note about how much. Let the engine cool and run another tank and observe again. Tom would set the ring gap pretty tight, so don't push the RPM up too much yet. Let the engine cool again and see how it feels. Look at the ring through the exhaust and see if you see the top of the ring showing any signs of seating, like getting shiny or at least looking different than the bottom of the ring. That is how it will break in, from the top to the bottom. Run another tank. If it's starting easy, try pinching the fuel like for a fraction of a second and see how it responds. Check the exhaust again and see if it's getting more clear. You repeat all of this until the exhaust gets a lot more clear, and you can see a definite difference in how the ring/rings looks. Tom usually used Frank Bowman heat treated rings, and they can take a while to seat. But once they are seated they will last a looooooong time!!  If you are feeling comfortable with what you are seeing, mount it in an airplane and make the first flights with a 13-5 prop. Just fly round and round with climbing and diving, maybe a loop or two and see how it responds. You can have the muffler on for flight testing. If all goes OK, the next thing is the pattern and have some fun!  Use your beak in fuel until you have run the engine at least a dozen times in a model and are happy with it. Then you can switch t something else. I generally run my ST.60s and ST.51s on SIG Champion fuel with 10% nitro and it's half castor and half Klotz synthetic. This usually leave a VERY generous deposit of oil n the bottom of the model to help you keep the paper towel people in business, and the synthetic oil helps keep things from varnishing up. I have been running ST.51' like this since they were introduced in 1994 a  nd out of the 3 or 4 I have in service with significant flight time, I have yet to feel the need that any needs a new ring yet, and the engines do not lock up after sitting a long time from the oil congealing. If you have some similar type of fuel down under, try that. If you run all castor all the time, just flush the engine from time t time with some air tool oil or  automatic transmission fluid to displace the excess castor and leave the fresh oil in it's place. This al works well for me.
   Good luck and have fun!!
    Dan McEntee
AMA 28784
EAA  1038824
AMA 480405 (American Motorcyclist Association)

Offline Craig Beswick

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Re: Tom Lay Super Tigre V60 break in
« Reply #2 on: April 15, 2021, 04:22:43 PM »
Thanks Dan,
the complete answer as usual.
Much appreciated.
Craig
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Offline Air Ministry .

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Re: Tom Lay Super Tigre V60 break in
« Reply #3 on: April 15, 2021, 06:17:48 PM »
He says Castor Only.  ( ( OOPS - a few fings wong . See BELOW ) .

Pref no muffler .

Once top half off rings shiney , fly - rich . fully seated when fully shone - ring .

The Olde Castorr Glue Trick means you need to C.R.C. & mineral oil , post flight / storage . As castor will dry & stick the ring. Long Term . Which is why some whine about ALL Castor .

Mr Lays Opinion , is the life is doubled- on castor only . If yr flying every weekend , just a dose of C R C worked in'd be fine . Winter Storage FLUSH & Mineral Oil , worked it . ( as in proped over severally - Damp . )

Plug Out , a healthy dose of fuel , belt over till clear , saves oiled plugs . Will try'n get a copy of his blurb on here. Dont hold your breath, though .

-----------------------

Id just give it a few bursts on a prime, then fuel , a few 3/5 second , a few ten , a few 30 sec. Cool off between . the avoid the metal to metal expanded hot contact from pre war engineering ( some ) trip .

« Last Edit: April 17, 2021, 08:29:00 PM by Air Ministry . »

Offline Craig Beswick

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Re: Tom Lay Super Tigre V60 break in
« Reply #4 on: April 15, 2021, 08:42:55 PM »
Thanks Matt.
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Online Ron Duly

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Re: Tom Lay Super Tigre V60 break in
« Reply #5 on: April 17, 2021, 12:14:32 AM »
This is what Tom Lay included with his engines:

Break-In Instructions for T&L Super Tigre Engines:

I have re-honed the cylinder and have used a custom made hardened Bowman piston ring in this motor.  It therefore MUST be broken-in as per these instructions!
1. Use 22-25% minimum ALL CASTOR fuel for break-in and at least for the first 20 flights.  (Synthetic oil manufacturers state Do Not use synthetic oil in a ringed motor during break-in!). The NEW piston ring is hardened to 1850 degrees F.
3. Bench run the engine (without a muffler preferably).  Slowly for 3 or 4 short (4 minute runs) and then look at the ring.  The top half should be shiney.
4. When the entire ring is shiney you can mount the engine in the airplane and install your muffler.
5. On the ground slowly run the engine through a full tank of fuel.
6. Now you can start flying the airplane, but again, start slowly and increase the RPM slightly every flight.

After 20 flights you can use a castor/syn. blend if you are stubborn.  BUT, ALL CASTOR will give you more consistent and forgiving runs and double the life of the ring in your motor.

If properly maintained this engine will give you many years of service.
Tom Lay

PS - You can enlarge the venturi if you need more power.

Offline Craig Beswick

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Re: Tom Lay Super Tigre V60 break in
« Reply #6 on: April 17, 2021, 05:50:03 AM »
Thank you very much Ron. The definitive answer.

Craig
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Offline Air Ministry .

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Re: Tom Lay Super Tigre V60 break in
« Reply #7 on: April 17, 2021, 08:22:32 PM »

Offline Air Ministry .

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Re: Tom Lay Super Tigre V60 break in
« Reply #8 on: April 17, 2021, 08:23:39 PM »
Furver stuff , for the recoed.


Offline Air Ministry .

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Re: Tom Lay Super Tigre V60 break in
« Reply #9 on: April 17, 2021, 08:27:09 PM »
nOTE, OPINIONS VARY , on Oil . note the AFTERUN oil recomendation . Most say MINERAL Oil . Chain Bar Oil is good for long term preservation. Might be a bit awkward to clear each weekend though .



Drought , then a flood .  ;)
« Last Edit: April 20, 2021, 06:47:09 PM by Air Ministry . »

Offline Craig Beswick

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Re: Tom Lay Super Tigre V60 break in
« Reply #10 on: April 17, 2021, 08:47:44 PM »
Thanks Matt, fascinating.
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Offline kevin king

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Re: Tom Lay Super Tigre V60 break in
« Reply #11 on: August 11, 2021, 08:14:54 AM »
Nice score Craig! I have a Randy Smith ST60 on A tounge muffler and love it!


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