Trinity EXTECH .21
#219
Got a couple more race days on both of mine and they seem to be getting better with each run. The Trinity fuel works good with the motors, but any good quality fuel probably should. Went two race days with out changing the plugs and temps were around 208 to 220 most of the time. Seems like a big swing in temps, but that was over the race day and I didn't change a thing on the carb. Didn't really think I needed to as they were running good and didn't seem to be lacking anywhere on the track. Morning air temp was around 65 and high for the day was 98 with 85% humidity.
#220
So its odd that the motor pictured on Trinities Website looks like a old school sirio, yet on A-Mains site the motor is using the new case..... As well I was told the Ex-tech was a short stroke 16.6 mm stroke..now A-Main is saying its a 16.8 mm ....... I was guessing its 16.9 mm......................... Why so much discrepancy with all the info and pictures ? A-Main write up talks about square stroke and everything.... It seems this motor is surrounded with mystery and misinformation to be honest.....
I plan to purchase a X-Tech asap, and hopefully have it dynoed over at AB Mods... I will also be measuring bore/stroke and timing profiles for myself....With my mods my CL7B is ballistic, I am really curious what can be done to the Extech
I plan to purchase a X-Tech asap, and hopefully have it dynoed over at AB Mods... I will also be measuring bore/stroke and timing profiles for myself....With my mods my CL7B is ballistic, I am really curious what can be done to the Extech
#222
OKay so A-Mains info is all wrong then ?
I am not trying to cause problems, but I am wondering why there are so many discrepancies in all the info....If me asking questions pisses you off maybe you should check A-Mains info and compare to the info you gave me....... I am just asking a honest question.......
IMO A-Main has gotten their description mixxed up, they have the writeup for the .24 combined with the writeup from the .21, then thrown in some standard .21 internal dimensions....... They did the same thing with the jammin JPX .28, having its stroke labeled as 16.8 mm which in turn made people believe the Jammin JPX was some new short stroke engine unique to Jammin... I actually bought one thinking it would be a short stroke Picco LOL !!!!!! ended up it was just a Picco P3 28 FTT with a red head !
Last edited by Maximo; 06-24-2008 at 06:11 AM.
#224
Joined: Sep 2001
Posts: 3,042
Ran two tanks through mine today. Other problems prevented more time.
I'm running a P4 with the W 2013. I think I'm gonna marry this engine!
LMAO. I hope to get more practice tomorrow, depending on work, then
big one day race on Sun.Engine was very snappy on the bottom even with
a relatively soft clutch. It would sit n idle for ten seconds or more
and not load up. Top was obviously not would it could be, but it was
still making great power. The thing that impressed me most so far
was...long story short, I ended up on my lid. By the time I got off
the stand and to the bug, at least a minute had passed. I also took my
time walking to it, figuring it would flame before I reached it. As I
got within about ten feet or so, I could here it, burbling, purring
like a little kitten
I'm running a P4 with the W 2013. I think I'm gonna marry this engine!
LMAO. I hope to get more practice tomorrow, depending on work, then
big one day race on Sun.Engine was very snappy on the bottom even with
a relatively soft clutch. It would sit n idle for ten seconds or more
and not load up. Top was obviously not would it could be, but it was
still making great power. The thing that impressed me most so far
was...long story short, I ended up on my lid. By the time I got off
the stand and to the bug, at least a minute had passed. I also took my
time walking to it, figuring it would flame before I reached it. As I
got within about ten feet or so, I could here it, burbling, purring
like a little kitten



