R/C Tech Forums - Team Orion Engines

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R/C Tech Forums (https://www.rctech.net/forum/)

- Offroad Nitro Engine Forum (https://www.rctech.net/forum/offroad-nitro-engine-forum-157/)

- - Team Orion Engines (https://www.rctech.net/forum/offroad-nitro-engine-forum/282133-team-orion-engines.html)

StillH20 Racer

11-19-2010 09:26 AM

Hey, kinda new here but I run orion engines in both my buggy and truggy. I have the ABI CRF 7 port in the buggy with the .24 Alpha in the truggy.

I was just wondering if anybody knows if it is possible to fit the CRF crankshaft into the .24? I know the bearing sizes aren't exactly the same size, but i was just wondering if it is possible to do it as I love the wat the CRF sounds and runs. Thanks

modified763

11-19-2010 06:26 PM

I know this is probably a stupid question, but is the Truhe.21 a turbo or a standard plug mill?

pitpop

11-20-2010 05:48 PM

Quote:

Originally Posted by Kai Hofsten (Post 8225953)

Dear Pitpop,

Thank you very much for your kind answers.

It was good to know that Orion will bring the best engines to the ordinary customer and that the factory teams contributes to development and testing. That is very important!

I will start using Byron 25/9. It does also cost less than Byron 25/11.

With respect to the coating, I was mostly thinking of the pin on the crankshaft where the conrod is connected to it as this can wear down and getting out of acceptable tolerances so that it might be necessary to buy both a new crankshaft and the connecting rod to avoid excess play. Of course if this pin is made out of very solid material without any hard coating then it is very much OK as it is I guess. My Orion 3 port is still fine, but I am thinking on future engine maintenance. Orion engine parts are quite expensive :)

Best Regards
Kai

the journal is made out of the highest quality hardened material, the same they have been using for the past 10 years. There should not be any premature wear or problems with this at all. Highest quality Italian machining. :)

pitpop

11-20-2010 06:08 PM

Quote:

Originally Posted by dirtbikekid2 (Post 8226900)

PITPOP- I am running the Orion Alpha 3 port along with a jp-4 pipe! I am only getting around 7 mins out of a tank and I think it should be more. Still trying to figure these engines out. I am in texas and my temp is usually around 248 or so, but most are telling me on these engines, normal temps are around 270?? What kind of needle settings are you guys using? Also I am experimenting with my EPA's to try and get a lil more mileage! Other than that, the engines are a beast on power!!

these mileage questions are always very tough because I can't see your car and such... there are so many factors that go into great mileage, it's just impossible to answer these questions like flipping a light switch. The 3 port on a normal US track should easily get 9 minutes of run time even with a 7mm restrictor. We run a 6.5 restrictor and turn down the EPA, and with Byron 30/9 and 2013 pipe we get 11 minutes of run time pretty easy with the production engine...

270 is too hot unless it's 100 degrees outside... with 75/80 degree ambient temp, a properly broken in engine should run 230/240.

pitpop

11-20-2010 06:09 PM

Quote:

Originally Posted by modified763 (Post 8233482)

I know this is probably a stupid question, but is the Truhe.21 a turbo or a standard plug mill?

turbo

pitpop

11-20-2010 06:20 PM

Quote:

Originally Posted by wgm (Post 8226626)

Hi Pitpop,

thank you for all the informations you give us regularly, regarding to the engines and MP9 and Grats to your incredible victory!

Why do you think coatings don't make such a sense in off-road?

What would be theoretically the best operating temps for the actual race eingines: 3- & 5-port-CRF-Orions?

May you give us please some informations about the special 'works-engines'? The crankcases were made by sandcasting, aren't they?

Many thanks
Wolf

super hardened and lightened cranks aren't as good for off road because the engines are slapping on the ground all the time off jumps, as opposed to on-road where they can be much more agressive machining the crank and hardening...

the operating temp for an engine depends a lot on the ambient temp... for 75/80 f temp the engine should run 230/240 range. Hot days over 100f the engine will get near 260...

the engines we ran at Worlds had no paint, just bare metal

croracer

11-22-2010 12:35 PM

so if you have the epa turned down, it only opens up 3/4 of the way? does that change the engine tunning or is it just for the mileage?

ScottyM

11-22-2010 01:59 PM

Quote:

Originally Posted by croracer (Post 8245099)

so if you have the epa turned down, it only opens up 3/4 of the way? does that change the engine tunning or is it just for the mileage?

The slide doesn't need to slide past the carb restrictor. On my Carbs, NO Orion, I typically only see 60% with 7mm inserts.. It obviously varies by engine, carb restrictor, servo, and radio being used.. You can also restrict the opening the poor man way, by simply turning down the EPA.. No restrictor needed..

dirtbikekid2

11-23-2010 10:49 AM

Pitpop...Thanks for your help and advice, Also congrats to you guys!!!!

ironpeddler

11-23-2010 01:13 PM

The pipe that comes with the crf alpha's engine/pipe combo kit is the 2057. The recommended pipe for the crf alpha 3, 5, & 7 ports is the 2058. The kit does not come with the recommended pipe according to the recommendation on team orion's website. This information was given to me buy Horizon Hobby who is the contact on team orion's webpage. So i just have a couple questions...

Can anyone tell me the difference between the 2057 & 2058 pipes on these engines? run times, speed, powerband w/e it may be?? Will the 2057 work just as good or should one go ahead and buy the 2058?? And the 2058 pipe is a Sirio on-road pipe correct?? What manifold is required, the one that comes with the 2058 looks all funky... I think pitpop already said it was an on-road pipe but I just want to make sure. thanks for any help

ScottyM

11-23-2010 03:11 PM

Quote:

Originally Posted by ironpeddler (Post 8250198)

The pipe that comes with the crf alpha's engine/pipe combo kit is the 2057. The recommended pipe for the crf alpha 3, 5, & 7 ports is the 2058. They do not specify which pipe comes with the kit unless you call and the kit does not come with the recommended pipe according to the recommendation on team orion's website. This information was given to me buy Horizon Hobby who is the contact on team orion's webpage. So i just have a couple questions...

Can anyone tell me the difference between the 2057 & 2058 pipes on these engines? run times, speed, powerband w/e it may be?? Will the 2057 work just as good or should one go ahead and buy the 2058?? And the 2058 pipe is a Sirio on-road pipe correct?? What manifold is required, the one that comes with the 2058 looks all funky... I think pitpop already said it was an on-road pipe but I just want to make sure. thanks for any help

You will need an Off-Road header. The Header that comes with the 2058 is for On-Road cars.. On-Road cars engines sit 90* compared to off-road.. Pit-Pop will have to answer the rest..

pitpop

11-23-2010 03:27 PM

Quote:

Originally Posted by dirtbikekid2 (Post 8249714)

Pitpop...Thanks for your help and advice, Also congrats to you guys!!!!

thanks very much! hey, my kids were big fans of yours when they were little, they watched your movies all the time :lol:

pitpop

11-23-2010 03:36 PM

Quote:

Originally Posted by croracer (Post 8245099)

so if you have the epa turned down, it only opens up 3/4 of the way? does that change the engine tunning or is it just for the mileage?

basically what ScottyM is saying is true, you want to turn down the epa when you put a smaller restrictor... if the slide opens all the way up when you have a smaller restrictor it causes the speed of the intake air to be elevated, causing all sorts of strange tuning and sometimes elevated temps... this also can cause turbulence and chaos as the mixture enters the crank... if you reduce the epa, it reduces the velocity of the air coming through the carb insert, reduces the turbulence and resulting ill mannered behavior, and should increase mileage...

you can also just reduce the epa, which should increase mileage and reduce power, but it might be less consistent than the restrictor method.

pitpop

11-23-2010 03:47 PM

Quote:

Originally Posted by ironpeddler (Post 8250198)

Choosing a pipe can be a tricky business. The 2057 is a good pipe, but in my experience it only works in a few places. We ran that pipe in France and it seemed fine, but when we try to run it in the US, the engine doesn't seem to make enough power. The 2013 or 2058 are the boss man pipes, they make tons of power. The 2013 is very loud and not allowed in some parts of Europe or EFRA block, and the 2058 is allowed everywhere. 2058 is a quieter version of the 2013, and they behave very similar. I've seen guys run the 2057 pipe with the extender here in the US and it seemed to work fine. In a nut shell, I would say the 2057 is a smoother power but more restrictive, where the 2013/2058 let the dogs out. :smile:

The 2058 used to be an on-road pipe, but now it's iFMAR 1/8 off-road World Champion, so I guess it's an off-road pipe now. :lol:

LabRat99

11-23-2010 03:59 PM

PitPop,

No question, I just wanted to congratulate you and Cody. Job well done! :nod::):nod:

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