R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 09-02-2014, 02:05 PM   #16
Tech Addict
 
JamesHealey's Avatar
 
Join Date: Jul 2011
Location: United Kingdom
Posts: 556
Trader Rating: 1 (100%+)
Default

Sounds like the rear bearing failed maybe?, could be due to lack of lubrication/engine being too lean?

It's always a real heart ache blowing up a .21 on-road engine, they aren't cheap!

Hope you get it back up and running soon!
__________________
Serpent 977 Evo | Novarossi Engines | Racing Experience Fuel | Xpert-RC Servos | Xtreme Tyres | Bitty Design Body Shells |
http://answer-rc.com/en/ - Answer RC supported driver.
JamesHealey is offline   Reply With Quote
Old 09-04-2014, 10:22 AM   #17
Tech Master
 
Geezatec's Avatar
 
Join Date: Oct 2007
Posts: 1,454
Default

I'm not too good with C deg, In F deg is close to 240deg, Ambient temp at 80deg. It stalled out a few times cuz its too lean. Richen your LSN a bit, get it to 220-230C be a lot better. What % of nitro you using? Crankcase really looks too dry, unless you wipe it off with a paper towel!
Geezatec is offline   Reply With Quote
Old 09-04-2014, 01:08 PM   #18
Tech Initiate
 
Join Date: Jun 2013
Location: Shanghai
Posts: 22
Default

Hi guys,
I use Tornado 25% fuel.
What I said the highest temperature was 117 C when we readjust the engine only for one lap.We run the engine at 100 to 105 C which is 220 deg F.
I don't think the engine was to lean, had lots of blue smoke coming out and it died always in a very slow corner...
When I disassembled the engine and saw the piston/sleeve I thought damn I got dirt into the engine...
So I started cleaning the crankcase, piston, sleeve and bearings. The carburetor looks clean, had only airfilter oil on the intake. During the cleaning I found fine metal shavings and heard that the bearing has excessive play...
At that time I removed already all the lubricant.

I contacted OS - still waiting for their feedback.

Michael
__________________
HARM SX4; modified Zenoah 23ccm DW XR23; 4x Futaba S-9353
Serpent 977; Novarossi 35plus WC
Futaba 4PX

Shanghai S51 club
supacha is offline   Reply With Quote
Old 09-11-2014, 07:14 AM   #19
am
Tech Master
 
Join Date: Jul 2004
Location: Norway
Posts: 1,552
Default

Your rear bearing is corroded. That is not a manufactor defekt. It is clear in the picture of your crankcase. That will eat ceramic balls very fast.
__________________
JConcepts
Kyosho MP9
KO PROPO
am is offline   Reply With Quote
Old 09-29-2014, 02:31 PM   #20
Tech Master
 
Racermac73's Avatar
 
Join Date: Jan 2013
Location: Palmyra, Virginia
Posts: 1,444
Trader Rating: 3 (100%+)
Default

I love mine... Its a torque monster with a ton of mid range but very little top end
__________________
TEAM SCREAM, McFACTORY, TQ WIRE, HO-B-MAX, MBR SPEED SHOP, DSI INC, SPEEDMERCHANT , 360 RACEWAY, XENON-USA.COM, TEAM SAXO, ROCHE USA, SANWA, DESOTO RACING, HOT RACE TYRES
Racermac73 is offline   Reply With Quote
Old 09-29-2014, 04:23 PM   #21
Tech Elite
 
blis's Avatar
R/C Tech Elite Subscriber
 
Join Date: May 2008
Location: Brisbane
Posts: 3,434
Default

Quote:
Originally Posted by supacha View Post
Hi guys,
I use Tornado 25% fuel.
What I said the highest temperature was 117 C when we readjust the engine only for one lap.We run the engine at 100 to 105 C which is 220 deg F.
I don't think the engine was to lean, had lots of blue smoke coming out and it died always in a very slow corner...
When I disassembled the engine and saw the piston/sleeve I thought damn I got dirt into the engine...
So I started cleaning the crankcase, piston, sleeve and bearings. The carburetor looks clean, had only airfilter oil on the intake. During the cleaning I found fine metal shavings and heard that the bearing has excessive play...
At that time I removed already all the lubricant.

I contacted OS - still waiting for their feedback.

Michael
It is quite normal for bearings to fail, specially the rear.

If you are looking for answers why? It can be many factors, including being too rich. get new bearings, look on youtube how to change them (you must take of carby and all components and put in the oven and readh 150c and they can fall out or a small tap.

then warm up block and put back new "cold" bearings in.

Do not attempt to run the engine as it is.
__________________
RC Cars: E4/G4/TCX/LAB-C02/T4'15/MM Engines
WEB: Beachmums Racing - MYRCM Race Registration
Media: Amain - RCRacingTV - RedRC - LiveRC - blisx264
blis is offline   Reply With Quote
Old 09-30-2014, 02:03 AM   #22
Tech Addict
 
JamesHealey's Avatar
 
Join Date: Jul 2011
Location: United Kingdom
Posts: 556
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Racermac73 View Post
I love mine... Its a torque monster with a ton of mid range but very little top end
They're producing their peak power somewhere in the region of 8,000 RPM lower than a Novarossi Virtus for instance, this means you're going to have the gear the car completely different, you need to keep gearing taller until you get that top end back with the OS engine.
__________________
Serpent 977 Evo | Novarossi Engines | Racing Experience Fuel | Xpert-RC Servos | Xtreme Tyres | Bitty Design Body Shells |
http://answer-rc.com/en/ - Answer RC supported driver.
JamesHealey is offline   Reply With Quote
Old 10-26-2014, 12:01 PM   #23
Tech Rookie
 
Men in Suits's Avatar
 
Join Date: Oct 2014
Location: Mt. Zion
Posts: 11
Default

How's this engine?
__________________
Rally Team Driver ---> No Lead Designs
Rattlesnake Engines
SWorks
Highest Servos
Men in Suits is offline   Reply With Quote
Old 10-28-2014, 07:56 AM   #24
Tech Addict
 
g-wan's Avatar
 
Join Date: Feb 2009
Location: brunei
Posts: 639
Trader Rating: 5 (100%+)
Send a message via MSN to g-wan Send a message via Yahoo to g-wan
Default

Quote:
Originally Posted by Men in Suits View Post
How's this engine?
all i can say its amaze me even i got some minor problem due to rich on my qualifing heat but in final the engine totally give amazing power and torque, the temp of my engine give suprise 80deg till finish the race,usually my zac r2101 and my nova rex peak temp 130deg - 150 deg at 36deg wheather
Attached Thumbnails
OS speed R2101-20141020_173342.jpg  
__________________
km k8 / os speed / savox / blitz / contact tyre
km hk1 evo / os speed / savox / sweep
sworkz evo / spower evo s7 / sweep / savox
xray t3 2012 / tekin rs pro / reedy / savox
km racing / sworkz / xray / savox / sanwa / os speed / sweep / ulti / blitz
g-wan is offline   Reply With Quote
Old 10-28-2014, 05:40 PM   #25
Tech Initiate
 
fab888's Avatar
 
Join Date: Aug 2012
Location: HongKong
Posts: 23
Default

coming from NOVA 35plus21 , I also love it
finishing the break-in period and now , will definitly see what it can produce
so far , easy set-up , easy breakin , can't wait to see more
already satidfied with the power delivered
fab888 is offline   Reply With Quote
Old 01-08-2015, 07:31 AM   #26
Tech Adept
 
Harold996tt's Avatar
 
Join Date: Mar 2014
Posts: 106
Default

Hope you sorted the issues out with your engine. This is the single best engine I have run with no problems.
__________________
Capricorn C802 1/8 GP, Mugen MGT7 1/8 GT.
Nostalgic collector of old Rc junk.
http://www.tamiyaclub.com/showroom.asp?id=44535
http://vintagerccar.blogspot.sg
Harold996tt is offline   Reply With Quote
Old 01-09-2015, 01:36 PM   #27
Tech Fanatic
 
finchy's Avatar
 
Join Date: Jan 2003
Location: Australia
Posts: 804
Default

Anybody using or have tried the HIPEX 2115 pipe with this engine yet. I know Collari uses it on his modified R2101 engines. Just would like some thoughts on how it compares to the OS Speed pipe.
I will be doing some back to back comparison next weekend at our first race meet of the year.
__________________
Pilot the BEST MUGEN kills the rest.
Team Ball Banger Racing inc.
OS Speed R2101
Futaba 3PK (HRS) - Crystals still rock.
Old School for Old Fools.
finchy is offline   Reply With Quote
Old 01-15-2015, 05:35 PM   #28
Tech Regular
 
Paulie Bee's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jul 2007
Location: New York
Posts: 404
Trader Rating: 2 (100%+)
Default feedback

Quote:
Originally Posted by finchy View Post
Anybody using or have tried the HIPEX 2115 pipe with this engine yet. I know Collari uses it on his modified R2101 engines. Just would like some thoughts on how it compares to the OS Speed pipe.
I will be doing some back to back comparison next weekend at our first race meet of the year.
How was your testing? Which pipe /header combos did you try? Results of the performance?
__________________
Thank You...
SERPENT AMERICA & DESOTO RACING
VP POWERMASTER RACING FUELS, Dean Isaac Paint Schemes,
PT RC Racing Oils
Paulie Bee is offline   Reply With Quote
Old 01-20-2015, 12:49 AM   #29
Tech Fanatic
 
finchy's Avatar
 
Join Date: Jan 2003
Location: Australia
Posts: 804
Default HIPEX PIPE results.

Hey there fellow OS users. One the weekend I tried the short manifold with the HIPEX pipe. Results are not totally conclusive but the first thing i did notice that the pipe did give a bit more top end or the OS OEM pipe set, run time was much the same. Power band delivery was a bit earlier with the hipex pipe.

This weekend we have another race meeting and I will try the medium manifold and report back the results. I will have better data after this weekend as I can give a comparison on all three pipe combinations.

Sorry if this is not a totally comprehensive post on the results. But so far if you are keen to try these HIPEX pipes and manifolds, I would no hesitation in suggesting anybody trying these. They are excellent value for money and are very well made.

Stay tuned for another post after this weekend.
__________________
Pilot the BEST MUGEN kills the rest.
Team Ball Banger Racing inc.
OS Speed R2101
Futaba 3PK (HRS) - Crystals still rock.
Old School for Old Fools.
finchy is offline   Reply With Quote
Old 01-23-2015, 02:07 AM   #30
Tech Rookie
 
Join Date: Jan 2014
Location: france
Posts: 3
Default hypex

HI
Collari use 2069 HYPEX with conical C-
which pipe you used exactly. explain with better details . For you the HYPEX is better 2115 is better
TOUFFETTE is offline   Reply With Quote
Reply



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 08:40 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0