R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Thread Tools Search this Thread
Old 11-30-2008, 08:05 PM   #61
Tech Adept
chunk t's Avatar
Join Date: Nov 2008
Location: Elgin, IL
Posts: 225


can't help you on this. I'm not a Rossi guy


chunk t is offline   Reply With Quote
Old 12-01-2008, 04:56 AM   #62
Tech Regular
bjr48's Avatar
Join Date: Apr 2008
Posts: 274

Originally Posted by osrocket View Post
bjr, the sleeve should not change when re-installing after resizing, sometimes the button area is a little snug, especially if the guy doing it uses one of the manual methods, and even then sometimes the tenths that it changes still make the button are a little snug, the VG sleeves are a softer composition and depending on what method is used it may be out of round then it is almost impossible to get back in. if you ever run into that again take a good set of micrometers and check it for out of roundness, and contact the person who did it and ask them what they think, i get alot of out-of-round sleeves in to try and repair and that is a 50-50 shot depending on how bad they are, thanks alot john b (osrocket)

email me if you have any questions or problems
Thanks for the advice. I'll have to give some serious consideration of who to use next time. The top few guys all come highly recommended though. Thanks for your help...
bjr48 is offline   Reply With Quote
Old 12-01-2008, 12:00 PM   #63
Tech Regular
rced1's Avatar
Join Date: Jan 2005
Location: Illinois
Posts: 336
Trader Rating: 17 (100%+)

Who do you guys use? Who else is there?
I started using OS Rocket, then switched to a local guy who has fast turnaround times. PM me if interested in contact info.

What are the Pros and Cons to pinching a motor?Pros, refreshes motor, extends life of motor, cheaper than new p/s.
Cons, overpinchung it yourself can ruin p/s, waiting until p/s is worn out may only give you a short additional life.

How long does a pinch last?
Normally, three gallons. But this depends upon the motor, tuning, etc. I normally pinch a motor after three gallons to keep it fresh. If you wait until a piston/sleeve is worn out before getting it pinched, then the results will vary.

Do you need to go through the same break in?
No, the motor is already heat cycled, but still needs a break in. I break mine in with one tank at idle and another at low RPMs. Then I keep the top end rich until the motor loosens up.
rced1 is offline   Reply With Quote
Old 12-03-2008, 07:26 PM   #64
Tech Master
RC Dad's Avatar
Join Date: Jun 2007
Location: Bismarck
Posts: 1,355
Trader Rating: 26 (100%+)
Send a message via MSN to RC Dad

I liked 22racer's work. Since I'm really an electric guy I just sent in the complete nitro motor and he tore it down and measured and spec'd it all out, then emailed me with the results and recommendations. He pinched and assembled it and sent it back in a couple of weeks for around $35 shipped if I remember right. I wouldn't know a stretched rod if I saw one so I appreciated having his expert help. Fellow racers have tried other pinchers without such good luck so I'd definitely use 22racer again.
GV2 Pro, XXX4G+, Blitz SCT, CRC GenXL
RC Dad is offline   Reply With Quote
Old 12-03-2008, 11:30 PM   #65
Tech Apprentice
Join Date: Oct 2008
Posts: 80
Trader Rating: 10 (100%+)
Default sleeve pinching

I had a great experience using rayaracing. I sent a 10 gallon piston and sleeve for my GRP Ninja .21, to Ray . He sent it back pretty quick , I live in Canada by the way, and it looked brand new. I threw some new TKO's in and its been like a brand new engine , idles all day and has tons of power. The other part I like is that you can see how he does it on his web site. The other guys didnt. I love it so much that I would like to buy one of his presses.
Truggyman is offline   Reply With Quote
Old 04-19-2009, 07:49 AM   #66
Tech Fanatic
Join Date: Nov 2002
Location: 4373 Creek Road Chaffee,NY 14030 USA (716)783-5198
Posts: 775
Trader Rating: 23 (100%+)
Default Sleeve reconstruction

Thanks Truggyman,

Not the press,but the tooling that is operated by the press,that makes the RayAracing resizing method the most successful method in the world. I invested a great deal of time designing these specialized die sets to allow others to do well. The best thing I could say here is let the guys with the well known good tooling do your resizing work. It ain't Rocket science, but you have got to have good tools to properly reconstruct these sleeve alloys.Kind regards, RayAracing
RayA is offline   Reply With Quote
Old 04-19-2009, 08:05 AM   #67
Tech Elite
Join Date: Apr 2009
Location: central kansas
Posts: 2,231
Trader Rating: 117 (99%+)
Send a message via Yahoo to penguineman

I used OS Rocket and had very good luck with him it's still running strong after 2 years of racing. but the next one I do I'll send to Rayaracing and have him do it so I can compare the 2 guys work I have heard great things about Ray so I figure I'd like to try his work out also. just my 2cents worth
penguineman is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pinching of the engine tkhoo Offroad Nitro Engine Forum 43 05-11-2012 03:57 PM
VENDETTA BL motor reviews.. pros/cons jaejw1 Micro and Mini Scales 121 02-09-2011 05:37 AM
Pinching sleeves TexasRacer Nitro On-Road 61 10-03-2007 07:00 PM
Rebuilding vs Pinching vs New CRASH Nitro Off-Road 1 09-09-2007 09:24 AM
Pros and cons about motor FAN Jochim_18 Electric On-Road 53 07-10-2006 02:09 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -7. It is currently 07:04 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net