Not sure about in the US, but yes they are still being sold in Asia... I'm running a D5 in my Sworks buggy. its been a strong motor with no issues at all. 4 gallons and counting...
Bermyboy
11-19-2012 08:42 AM
Fletch thanks for the info I think I may pick one up.
So*Cal AFDude
08-01-2013 10:12 AM
Anyone else have experience with the .21BS Evo??
mxr17
08-03-2013 04:21 AM
Originally Posted by akiyama77
(Post 7925001)
I have the 21C version, and this is just a heads up or FYI of what can happen, my motor has 1/2 gallon on it, and makes great power, and great run time. Last weekend, I noticed some fuel seepage behind the flywheel, no problem I'll put a TKO in. Upon pulling the head off, this is what the piston looked like, and after further tear down the whole piston is like this, crank, sleve and rod show no markings or pitting. I contacted Acend/PR-RC, and went back and forth, I'm concerned about the realiablility now, they indicated that I may have left the motor out in the open and that could have caused it, no, not true. There latest responce is " they see no problem
running in this situation". To say the least I'm not happy with it, the motor still has good compression and pinch, does run for how long who knows. I thought atleast they'd send a repalcement piston and sleeve. What do you think?
This is just the traces of silicium in the alloy, just normal. Nothing to worry about, any casted pistons with silicium alloy will look like That, all the engines made in Asia (alpha,precirotate, arrow etc) have caste pistons as they are cheaper to produce than cnc made pistons. Plus they contain in the mix of alloy a high percentage of silicium witch is helping with wear.
As the importer told you there is no problems and just run it as it is.
If you wanted a cnc made piston you took the wrong brand and especially paid the wrong price. :)
