Arrow Racing GTR .21 Engine Thread
#979
#980
#982
#985
good run danny teh
Some dude put a complete p/s/l into a Ninja B01 and it went even faster.
I have no idea though.......will pop in a crank shaft B01 since i got one.
And see if it is better...........
DT
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New Arrow Heatsink..........it is stronger now.......
It is good to see.......the manufacturer respond quickly to request.....
Thumbs up !
#986
Yes......the motor is consistent.......
Some dude put a complete p/s/l into a Ninja B01 and it went even faster.
I have no idea though.......will pop in a crank shaft B01 since i got one.
And see if it is better...........
DT
---------------------------------------------
New Arrow Heatsink..........it is stronger now.......
It is good to see.......the manufacturer respond quickly to request.....
Thumbs up !
Some dude put a complete p/s/l into a Ninja B01 and it went even faster.
I have no idea though.......will pop in a crank shaft B01 since i got one.
And see if it is better...........
DT
---------------------------------------------
New Arrow Heatsink..........it is stronger now.......
It is good to see.......the manufacturer respond quickly to request.....
Thumbs up !
#987
The VZB Speed crankshaft gives more bottom end to the GTR-21. The Ninja crank gives even more all around power - perfect for truggy.

Great tip........I might run the Ninja shaft on super size track.............the GTR shaft on track which have plenty of jump.......

DT
#988
Tech Rookie
Joined: Oct 2006
Posts: 9
Race tune for Arrow engine
To all Arrow Engine users. Here is the tuning which we found to be close to what you might need.
Low Speed Needle: From Flush >> 1/2 Turn in.
Mid Speed Needle: From Flush >> 1 1/2 Turn Out.
High Speed Needle: From Flush >> 1 3/4 Turn in.
I tried these settings Danny posted a link to, ran awesome.
Rex
To all Arrow Engine users. Here is the tuning which we found to be close to what you might need.
Low Speed Needle: From Flush >> 1/2 Turn in.
Mid Speed Needle: From Flush >> 1 1/2 Turn Out.
High Speed Needle: From Flush >> 1 3/4 Turn in.
I tried these settings Danny posted a link to, ran awesome.
Rex
Started with flush needles at 2 o'clock and it kept on cutting. Thought it was to rich and started to lean the high and low needles, but still cut. Tried a nova carb, but still the same. I then read your post about the mid needle setting and put it
1 1/2 out from flush. I set the high and low needles to your settings also. All I can say is what a difference. Very strong performance, good temps and no cuts.
Has anyone else tried this on the mid needle? Most people say flush 2 o'clock, but this did not work for me.
#989
Really glad I read your post. I started the break in on the box and then on the ground running in a few figure of eights. The problem was that if kept on cutting.
Started with flush needles at 2 o'clock and it kept on cutting. Thought it was to rich and started to lean the high and low needles, but still cut. Tried a nova carb, but still the same. I then read your post about the mid needle setting and put it
1 1/2 out from flush. I set the high and low needles to your settings also. All I can say is what a difference. Very strong performance, good temps and no cuts.
Has anyone else tried this on the mid needle? Most people say flush 2 o'clock, but this did not work for me.
Started with flush needles at 2 o'clock and it kept on cutting. Thought it was to rich and started to lean the high and low needles, but still cut. Tried a nova carb, but still the same. I then read your post about the mid needle setting and put it
1 1/2 out from flush. I set the high and low needles to your settings also. All I can say is what a difference. Very strong performance, good temps and no cuts.
Has anyone else tried this on the mid needle? Most people say flush 2 o'clock, but this did not work for me.
Rex
#990
Heading to the track in the morning to break in my V3.
I took the carb apart and looked at all the neddles. I am starting with this:
Idle gap - .6mm
High - 2.5 out
Low - 1 turn in at noon
Mid - 2 turn out from flush at 2 o'clock
That looks like the best settings to me. I will report my results Mon.
I took the carb apart and looked at all the neddles. I am starting with this:
Idle gap - .6mm
High - 2.5 out
Low - 1 turn in at noon
Mid - 2 turn out from flush at 2 o'clock
That looks like the best settings to me. I will report my results Mon.



