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Old 07-06-2006, 09:59 PM   #16
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Quote:
Originally Posted by Nitro$junkie
cost $325 from rc mushroom
I guess price went up $335 now
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Old 07-08-2006, 07:12 PM   #17
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Yeeeeeeeeeha. Should be one of these showing up on my doorstep soon enough.

Cant wait to break it in and try it out!


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Old 07-14-2006, 09:22 PM   #18
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its nice its still an os,i have motors like this,fast but dont last long at all.
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Old 07-17-2006, 10:44 AM   #19
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Originally Posted by wallyedmonds
its nice its still an os,i have motors like this,fast but dont last long at all.

That's a bold statement to make. I've used an OS TZ Eb mods for multiple races in the 90+ degree weather and instead of getting weaker its getting stronger. I believe that engine break in, care and tuning play a major role of how long an engine lasts. I take the entire engine apart after every race and clean out all the carbon deposits and any other deposits that may be left behind from a race.

These concepts (care and whatnot) are the same for every other aspect in racing.

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Old 07-17-2006, 07:58 PM   #20
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Quote:
Originally Posted by Scoobs
That's a bold statement to make. I've used an OS TZ Eb mods for multiple races in the 90+ degree weather and instead of getting weaker its getting stronger. I believe that engine break in, care and tuning play a major role of how long an engine lasts. I take the entire engine apart after every race and clean out all the carbon deposits and any other deposits that may be left behind from a race.

These concepts (care and whatnot) are the same for every other aspect in racing.

Cheers,
what i ment was they dont last as long as others,i do like os motors tho
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Old 07-17-2006, 09:52 PM   #21
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Quote:
Originally Posted by wallyedmonds
what i ment was they dont last as long as others,i do like os motors tho
I disagree.....I see the .12 tz lasting just as long if not longer than other motors on the market.....very durable great starter motor.
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Old 07-20-2006, 01:49 AM   #22
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crank looks great. hmm, although its an OS, and theyre known for their runtime, modifying a motor can reduce the runtime.

does anyone even have one of these? feedback on the engine please!
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Old 07-20-2006, 11:38 AM   #23
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Quote:
Originally Posted by wallyedmonds
what i ment was they dont last as long as others,i do like os motors tho
I have to disagree with your statement as well. I have run OS engines since the early 1990s and they last just a long as the top engines from Nova, Sirio, etc. I have a square, red-head 12cv that I bought new in the early 90s, ran almost 4 gallons on the nickel sleeve and piston in an offroad truck, after-run oiled and retired it for 5 yrs, put it in a newer RC10GT and ran dirt oval for another 2 gallons, retired it again and it is still kicking strong. Once I got a temp gun (which I did not have when I bought the engine), found out it had been running around 270F degrees on the original nickel-plated sleeve (which should have burned it out by now). All of this while changing fuels 4 times. It still has pop, fires up on the first bump, and runs strong today. So, I can testify that OS makes strong engines that last, if taken care of in the right way and broken in properly.

Oh, I do own an OS 12tz that runs strong, never been over 245F degrees, gets about 6 minutes per tank on the big track (with 250+ foot backstretch) and have not had any issues with it other than a blow plug or two. Two weeks ago, I ran it for over 90 minutes at my regionals (5 min qualifier, 30 min B-main, 45 min A-main, with another 20+ min of practice/warm-up time) with it coming off the track at a cool 217F degrees after the B-main and 223F after the A-main. I have spare Novarossi and Sirio engines that don't run like this and I have broken all of them in the same way.
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Old 07-20-2006, 07:16 PM   #24
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Quote:
Originally Posted by JLock
I have to disagree with your statement as well. I have run OS engines since the early 1990s and they last just a long as the top engines from Nova, Sirio, etc. I have a square, red-head 12cv that I bought new in the early 90s, ran almost 4 gallons on the nickel sleeve and piston in an offroad truck, after-run oiled and retired it for 5 yrs, put it in a newer RC10GT and ran dirt oval for another 2 gallons, retired it again and it is still kicking strong. Once I got a temp gun (which I did not have when I bought the engine), found out it had been running around 270F degrees on the original nickel-plated sleeve (which should have burned it out by now). All of this while changing fuels 4 times. It still has pop, fires up on the first bump, and runs strong today. So, I can testify that OS makes strong engines that last, if taken care of in the right way and broken in properly.

Oh, I do own an OS 12tz that runs strong, never been over 245F degrees, gets about 6 minutes per tank on the big track (with 250+ foot backstretch) and have not had any issues with it other than a blow plug or two. Two weeks ago, I ran it for over 90 minutes at my regionals (5 min qualifier, 30 min B-main, 45 min A-main, with another 20+ min of practice/warm-up time) with it coming off the track at a cool 217F degrees after the B-main and 223F after the A-main. I have spare Novarossi and Sirio engines that don't run like this and I have broken all of them in the same way.

Now thats what im taling about. It's good to see people realize the quailty OS puts in thier engines is up to par with the best. I feel that we can only expects better things to come from companies like OS.

Also, I find that the OS engines are capable of making strong power with lower contect nitro....I never had the need to run 25 or 30% with my tz ebmods or Zeppin.

Cheers

Last edited by Scoobs; 07-20-2006 at 09:19 PM.
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Old 07-20-2006, 08:26 PM   #25
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its good you guys are happy with them,i like mine its now not fast enuff and theres 5 of us that will say that,i do like the motor ,very easy to tune and run, im not saying its totaly slow,just not quite there,i do run it at fastcats some sundays (www.fastcats.ca)
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Old 07-21-2006, 02:17 PM   #26
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There was one thing in my testimonial I forgot to mention: I put over 220 laps on my stock OS 12tz and it is still running strong.

Wally,
I running run the OS 12tz in my mtx3, Max Power 12s3 MF in my mtx4. I have a Mugen X12, Sirio Evo2, and a Pixy Black 12 as backup engines. Between the five, the OS runs the most effecient and I turn faster laps with it in my mtx3 than I did with the Mugen X12, Sirio Evo2, and Pixy Black when they were in that car. It even is faster than the Max Power that is in my mtx4. I just ran in the RC Pro Series race in my area and ran a qualifier the the mtx3 and another with the mtx4 respectively. The older car with stock engine turned two more laps in its qualifier over the newer car with the "faster, stonger" engine with all other things being equal.
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Old 08-07-2006, 05:48 PM   #27
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I just wanted to let everyone know that I finally ran this motor at a local track and WOW....truly amazing engine. The person that does the modifications is a VERY knowledgeable person and surely knows what he's doing. Any person that knows 2 stroke nitro engines would agree in a second.

I didnt even crank it up...kept it 200 and lower and it already has tons more power and punch that my previous EB mods. I cant say enough good things about it...worksman ship is amazing.

Next week ill crank the motor up to a max of 230 and I know it will be blistering fast.


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Old 08-07-2006, 06:35 PM   #28
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I also ran it this past weekend with similar results. Ran it on the edge of too rich and it still had good power and speed. I have an LL3 from the same guy and the power and revs are awesome. Had to tighten my 2speed 1 1/2 turns over a stock TZ5port. With the Zeppin TZ, the setting is the same so that means it has loads of torque. Can't wait to push it.
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Old 08-07-2006, 07:32 PM   #29
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Quote:
Originally Posted by rskoncepts
I also ran it this past weekend with similar results. Ran it on the edge of too rich and it still had good power and speed. I have an LL3 from the same guy and the power and revs are awesome. Had to tighten my 2speed 1 1/2 turns over a stock TZ5port. With the Zeppin TZ, the setting is the same so that means it has loads of torque. Can't wait to push it.


Awsome news. Glad to hear this.



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Old 08-08-2006, 12:38 PM   #30
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Quote:
Originally Posted by JLock
There was one thing in my testimonial I forgot to mention: I put over 220 laps on my stock OS 12tz and it is still running strong.

Wally,
I running run the OS 12tz in my mtx3, Max Power 12s3 MF in my mtx4. I have a Mugen X12, Sirio Evo2, and a Pixy Black 12 as backup engines. Between the five, the OS runs the most effecient and I turn faster laps with it in my mtx3 than I did with the Mugen X12, Sirio Evo2, and Pixy Black when they were in that car. It even is faster than the Max Power that is in my mtx4. I just ran in the RC Pro Series race in my area and ran a qualifier the the mtx3 and another with the mtx4 respectively. The older car with stock engine turned two more laps in its qualifier over the newer car with the "faster, stonger" engine with all other things being equal.
well i just blowed up my tz real good like LOL this passed sat, maybe my next one will be good.may be ill get a ZEPPIN i know a guy that has one and it looks pritty good.
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