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marc8090 · 02-12-2016, 09:34 PM

Quote:

Originally Posted by marc8090

Received my 2 new pistons from RC Japan today, both have the old style roll pin, not a solid pin.

Sorry guys, I was wrong!

Out of the bags and upon a closer look both pistons do in fact have solid pins!!!

msallua · 02-13-2016, 01:03 AM

Thanks for the feedback

Sirolf · 02-13-2016, 05:23 AM

Quote:

Originally Posted by dbcaster

Also, OS said that the hollow or solid pin does not make a big difference in use.*

So why would they change to a solid pin.. they know all to well about the problem.

Rodney Kirstine · 02-13-2016, 08:19 PM

Tore into my 105 today. Top of the piston looked perfect and was a really nice color and the ring is still really black but, sure enough, the pin is gone. Glad I decided to go ahead and order a new one.

dbcaster · 02-16-2016, 04:43 PM

I received my new piston from RCJ today. It does indeed have the solid pin.

msallua · 02-23-2016, 08:59 AM

I received my new piston from RCJ today. Solid pin.

crf69 · 02-29-2016, 02:31 AM

subbed.

i plan on running my 105 until it PUKES.

then its ys91srx tareq time.

LoveToFly1 · 03-28-2016, 02:30 PM

I forgot to update my last experience. the last time I posted here I was testing that new piston from OS with the solid pin. I have not had a failure since I started flying these new pistons. thanks to Nick Maxwell for helping me get this issue brought to light and being the middle man for the customer and OS!!!

mat081278 · 03-28-2016, 04:08 PM

Good news for OS 105 owner, but what about os 91 owner:
https://www.helifreak.com/showthread.php?t=555401

I have always this issue on my OS 91, what can I do ?

liam-b · 03-29-2016, 05:16 PM

Half of the pin on my Piston has gone too, I have ordered a new one from RC japan so hope it comes with the solid pin

. although it is annoying as its the second piston and they are not a cheap engine.

blue92ehsi · 05-09-2016, 06:21 AM

Talked to RCJapan about the solid pin vs rolled steel and here's the email exchange I got after I told them I only want to order if they can ensure I will receive a solid pin piston. I told them the new design has a solid steel pin.

After this I sent them a photo of each as proof and I got this back

At last an answer that makes sense. But until the prototype is guaranteed I will be waiting lol

Sent from my iPhone using Tapatalk

duckmansweb · 07-30-2017, 08:56 PM

Any updates on this ? as I want to order a new piston from RCJ but I want a solid pin

Drivelayer · 07-30-2017, 09:45 PM

Man this is an old thread.. I have hundreds of flights on my piston, ordered from rcjapan. In fact i've replaced bearings and ring, keeping the same piston.. you're probably safe.

FYI, os105hzr on 15% cool power, with an additional 2oz of Sig techniplate per gallon

acidla · 07-31-2017, 12:47 AM

Quote:

Originally Posted by duckmansweb

Any updates on this ? as I want to order a new piston from RCJ but I want a solid pin

A few posts above two guys received pistons with solid pins. You can contact RCJ just to be sure. Let us know what they told you

View Poll Results: Which of the following is true?
I have an OS105, the pin has always been fine and my engine has less than 10 gallons	7	21.21%
I have an OS105, the pin has always been fine and my engine has more than 10 gallons	2	6.06%
I have an OS105, the pin has always been fine and my engine has less than 20 gallons	7	21.21%
I have an OS105, the pin wore through before 10 gallons were through	9	27.27%
I have an OS105, the pin wore through between 10-20 gallons	6	18.18%
I have an OS105, the pin wore through after 20 gallons	2	6.06%
Voters: 33. You may not vote on this poll

02-13-2016, 01:03 AM	#62 (permalink)
msallua Registered Users Join Date: Nov 2010 Location: Doral, Florida, USA	Thanks for the feedback __________________ Align 800e PRO DFC // KRAKEN Yellow // RAW Nitro // Align 700N DFC // RAW Yellow // 2x Goblin 420 // RAW 420 // RealFlight 7.5 // neXt // AccuRc // Tribunus - Vbar Control Touch - Vbar Neo

02-13-2016, 08:19 PM	#64 (permalink)
Rodney Kirstine Registered Users Join Date: Mar 2012	Tore into my 105 today. Top of the piston looked perfect and was a really nice color and the ring is still really black but, sure enough, the pin is gone. Glad I decided to go ahead and order a new one. __________________ Team Synergy Field Rep, Rail Blades

02-23-2016, 08:59 AM	#66 (permalink)
msallua Registered Users Join Date: Nov 2010 Location: Doral, Florida, USA	I received my new piston from RCJ today. Solid pin. Attached Thumbnails __________________ Align 800e PRO DFC // KRAKEN Yellow // RAW Nitro // Align 700N DFC // RAW Yellow // 2x Goblin 420 // RAW 420 // RealFlight 7.5 // neXt // AccuRc // Tribunus - Vbar Control Touch - Vbar Neo

02-29-2016, 02:31 AM	#67 (permalink)
crf69 Registered Users My HF Map location Join Date: Aug 2011	subbed. i plan on running my 105 until it PUKES. then its ys91srx tareq time. __________________ you should look into it...........

02-16-2016, 04:43 PM	#65 (permalink)
dbcaster Registered Users Join Date: Jul 2005	I received my new piston from RCJ today. It does indeed have the solid pin.

03-28-2016, 02:30 PM	#68 (permalink)
LoveToFly1 Registered Users Join Date: Jun 2013	I forgot to update my last experience. the last time I posted here I was testing that new piston from OS with the solid pin. I have not had a failure since I started flying these new pistons. thanks to Nick Maxwell for helping me get this issue brought to light and being the middle man for the customer and OS!!! __________________ Gasser Mike Team KDE Direct, TRM Power, Byron Fuels, MKS Servos

03-28-2016, 04:08 PM	#69 (permalink)
mat081278 Registered Users Join Date: Jul 2011	Good news for OS 105 owner, but what about os 91 owner: https://www.helifreak.com/showthread.php?t=555401 I have always this issue on my OS 91, what can I do ?

03-29-2016, 05:16 PM	#70 (permalink)
liam-b Registered Users Join Date: Nov 2011	Half of the pin on my Piston has gone too, I have ordered a new one from RC japan so hope it comes with the solid pin . although it is annoying as its the second piston and they are not a cheap engine. __________________ goblin 700- goblin 500 - logo 700 -logo 550 - gaui nx4 Blade mcpx bl and 130x

05-09-2016, 06:21 AM	#71 (permalink)
blue92ehsi Registered Users Join Date: Apr 2013	Talked to RCJapan about the solid pin vs rolled steel and here's the email exchange I got after I told them I only want to order if they can ensure I will receive a solid pin piston. I told them the new design has a solid steel pin. After this I sent them a photo of each as proof and I got this back At last an answer that makes sense. But until the prototype is guaranteed I will be waiting lol Sent from my iPhone using Tapatalk

07-30-2017, 08:56 PM	#72 (permalink)
duckmansweb Registered Users Join Date: Jan 2009	Any updates on this ? as I want to order a new piston from RCJ but I want a solid pin __________________ Trex 700N, Vbar 5.3 , OS105 HZ-R

07-30-2017, 09:45 PM	#73 (permalink)
Drivelayer Registered Users Join Date: Jan 2012	Man this is an old thread.. I have hundreds of flights on my piston, ordered from rcjapan. In fact i've replaced bearings and ring, keeping the same piston.. you're probably safe. FYI, os105hzr on 15% cool power, with an additional 2oz of Sig techniplate per gallon

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