Arrow Racing GTR .21 Engine Thread
#302
Tech Apprentice
iTrader: (3)
Joined: Dec 2010
Posts: 92
From: NSW Australia
I ran the 2050 pipe today and it sucked
I had a spare GO pipe (2072, I think) in my bag and it really opened up. I was getting about 8 mins but could have pushed for 9. I had a 8mm restrictor ninja carb and ninja crank shaft . It was heaps easier to dial with the better carb and never missed a beat. The power was on tap (so much when i gave it a full throttle in a hurry it would spin around
)
I had a spare GO pipe (2072, I think) in my bag and it really opened up. I was getting about 8 mins but could have pushed for 9. I had a 8mm restrictor ninja carb and ninja crank shaft . It was heaps easier to dial with the better carb and never missed a beat. The power was on tap (so much when i gave it a full throttle in a hurry it would spin around
)
#305
So, funny thing. I originally started this thread but never used the motor until the last two weeks (races). I have the newer designed engine case one now. I tried a Werks 2013, had a weird power band with it more mid to top, just felt weak, ran an Alpha 0801 HC and was pretty good, but I then I tried the Werks 2058 and it sang. This thing turned into a rocket. Going to be running it this weekend at the GA RC Pro Series. I will report back how it goes.
#306
I ran the 2050 pipe today and it sucked
I had a spare GO pipe (2072, I think) in my bag and it really opened up. I was getting about 8 mins but could have pushed for 9. I had a 8mm restrictor ninja carb and ninja crank shaft . It was heaps easier to dial with the better carb and never missed a beat. The power was on tap (so much when i gave it a full throttle in a hurry it would spin around
)
I had a spare GO pipe (2072, I think) in my bag and it really opened up. I was getting about 8 mins but could have pushed for 9. I had a 8mm restrictor ninja carb and ninja crank shaft . It was heaps easier to dial with the better carb and never missed a beat. The power was on tap (so much when i gave it a full throttle in a hurry it would spin around
)
#310
Tech Addict
iTrader: (30)
Joined: Feb 2009
Posts: 635
just ran this engine for the first time last weekend and it ran awesome the whole weekend very happy and comfident with this engine. I ran it with 7mm venturi and ae 2035 pipe got 8mins runtime, the engine isnt even close to broke in and it was running really fat so i was impressed with that, also has anyone done any testing on this engine with different pipes, maybe you guys can save me the trouble, what have you found works best?
#313
Joined: Mar 2009
Posts: 3,660
I saw on eBay a p/s/r set for vspecs, ninjas and speeds. It was 99$ and he said it was oem part. I was skeptical but bought it any knowing at the least it was a knockoff from this engine or another spec copy. So I have it today and want to make sure. I will describe the rod as having the same oil hole, without as big of a knife edge, but thet have a strip milled out in the middle of both sides.
The piston has a speckled appearance (this is the only way I can describe it), almost like it has a coating. The rear exhaust port is symmetrical without the flares up top but maybe bigger over all. And the fit is extremely tight. I hope my starter box will turn it over. Even hot it looks to be a pitta. I am dropping this in a ninja or spec case (haven't decided)
Does this sound right? Also have a ebmods head button. Can I use it? Have re10,re11, 086, 2013, 2058. Also have some L headers.
The piston has a speckled appearance (this is the only way I can describe it), almost like it has a coating. The rear exhaust port is symmetrical without the flares up top but maybe bigger over all. And the fit is extremely tight. I hope my starter box will turn it over. Even hot it looks to be a pitta. I am dropping this in a ninja or spec case (haven't decided)
Does this sound right? Also have a ebmods head button. Can I use it? Have re10,re11, 086, 2013, 2058. Also have some L headers.
#314
I saw on eBay a p/s/r set for vspecs, ninjas and speeds. It was 99$ and he said it was oem part. I was skeptical but bought it any knowing at the least it was a knockoff from this engine or another spec copy. So I have it today and want to make sure. I will describe the rod as having the same oil hole, without as big of a knife edge, but thet have a strip milled out in the middle of both sides.
The piston has a speckled appearance (this is the only way I can describe it), almost like it has a coating. The rear exhaust port is symmetrical without the flares up top but maybe bigger over all. And the fit is extremely tight. I hope my starter box will turn it over. Even hot it looks to be a pitta. I am dropping this in a ninja or spec case (haven't decided)
Does this sound right? Also have a ebmods head button. Can I use it? Have re10,re11, 086, 2013, 2058. Also have some L headers.
The piston has a speckled appearance (this is the only way I can describe it), almost like it has a coating. The rear exhaust port is symmetrical without the flares up top but maybe bigger over all. And the fit is extremely tight. I hope my starter box will turn it over. Even hot it looks to be a pitta. I am dropping this in a ninja or spec case (haven't decided)
Does this sound right? Also have a ebmods head button. Can I use it? Have re10,re11, 086, 2013, 2058. Also have some L headers.
chances are the speckled piston means it is a cast piston... look on the underside of the piston and see if it looks machined or cast...




