R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-23-2009, 09:18 PM   #1
Tech Regular
 
Join Date: Jun 2005
Location: st. albans wv
Posts: 482
Trader Rating: 9 (91%+)
Default temp tunning question

ok got a simple question, when tunning by temp, where is the correct spot to take the temp at?

ive heard on the head, on the block, and ive even heard people say the edge of the exhaust.


so whats the right spot to check it at?

also, what temp is the safe, or correct temp?

i have a hotbodies lighting stadium with the hpi motor, i belive its a .28 and i also have a lst2 with the stock 427
jbeane is offline   Reply With Quote
Old 05-23-2009, 09:33 PM   #2
Tech Master
 
jrwoodchuck's Avatar
 
Join Date: Nov 2007
Location: Northampton, Massachusettes
Posts: 1,336
Default

glow plug is what i see the most, but i warn you. tunning by temp really isn't the best way to adjust your engine. i use my temp gun only wile breking in an engine to make sure i keep the temp above 180. i only know what my temp is after a race because it's always done by my pit guys. but in all accuallity, i can tell them what the temp is before they put the temp gun on my engine. 220-230 is ware i come off the track at with a v-spec.

i feel they are a "crutch".

imo
__________________
Doug
TLR 22/M-11

“Looks like I picked the wrong week to quit sniffing glue.”
jrwoodchuck is offline   Reply With Quote
Old 05-23-2009, 10:41 PM   #3
Tech Lord
 
Jaz240's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2008
Location: Dwindle city
Posts: 12,492
Trader Rating: 52 (100%+)
Default

Temps are to be used as an indication only that you may be ruining your engine. You always want to tune for performance, sound and smoke from the pipe. Take temps inside the cooling head, right next to the plug. The plug dissipates heat, so temp the inside of the head itself..If you temp at 275..richen it up a tad, but anything under that, if your engine is tuned right, dont worry about it. A properly tuned engine with the correct ambient conditions should never exceed 250..unless its an RB..RB's run good at 300, or so I am told
__________________
nothing to see here................................
Jaz240 is offline   Reply With Quote
Old 05-24-2009, 01:08 AM   #4
Tech Elite
 
Gearhead racer's Avatar
 
Join Date: May 2009
Location: Somewhere in PA
Posts: 2,020
Default

I only temp to make sure im not above 265f. Tune by sound, performance and smoke. Close a possible to the plug.
__________________
"Seeing the world on 2 wheels"
Losi Ten-T SCTE~Tekin SC4X 4.5~ Tekin RX8
Gearhead racer is offline   Reply With Quote
Old 05-24-2009, 01:37 AM   #5
Tech Champion
 
losi_racer's Avatar
R/C Tech Elite Subscriber
 
Join Date: Nov 2008
Location: mesa,az
Posts: 6,470
Trader Rating: 25 (100%+)
Default

Quote:
Originally Posted by Gearhead racer View Post
I only temp to make sure im not above 265f. Tune by sound, performance and smoke. Close a possible to the plug.
same with me, i just check to make sure its not a high temp. i tune it and after i think its good then i hit the temp gun
__________________

Byron Fuels/AKA Tires/Radiopost/TKO/Viper Rc/Dialed Inc/Empire Metal Product/Advantage Racing Products
losi_racer is offline   Reply With Quote
Old 05-24-2009, 05:37 AM   #6
Tech Fanatic
 
vladconnery's Avatar
 
Join Date: Jun 2008
Location: Charlotte, NC
Posts: 992
Trader Rating: 35 (100%+)
Default

Temping is only for safety measures. You don't want to be above 275 or below 200 on any engine. The exception to the rule being the now defunked GRP which operated right at 200 or below. Probally is why there now out of business. 300 is the magic kill number for engines. They won't die because you have reached this number but you should immediately shut it down and inspect for other problems I.e. Airleaks, cb bearings, engine bearings, engine alignment bad clutch shoes ect...

As far as RB's operating at 300 that's not true. My RB's and all I have ran across fall into the same operating range. Above 200 but below 275. A
Good temp is right about 220 or 230. A car coming off the track at 200 to 210 was probally operating below 200 in the infield (technical part of track). Where engine does not wind up as high creating heat to maintain correct engine temp.

What you want is constant smoke through entire rpm band. How much smoke depends on engine type and fuel used. You also want a snappy engine an engine that responds to throttle input at all bands. This is where your temp gauge comes in to play. As a reference to what the temp was to achieve correct performance. On that days ambient temp and humidity. Which as a rookie will start teaching you correct tuning points for your engine in different weather situations.
__________________
KO PROPO EURUS
Kyosho: TKI3, TKIe Tekin RX8 Gen2
vladconnery is offline   Reply With Quote
Old 05-24-2009, 09:40 AM   #7
Tech Regular
 
Join Date: Jun 2005
Location: st. albans wv
Posts: 482
Trader Rating: 9 (91%+)
Default

ok all very helpful.

whats funny, is i just now got a temp gun, ive always tunned by smoke, and responseiveness. and how much power it makes. and tried to use the spit method, lol.



i need to re temp the motors inside the head, to malke sure there not too hot. they both seem to make great power, the losi seems way rich at bottom end, but runs great after about a foot.

the hpi takes a extra min to warm up, but after a 40-60 secs of running, it makes all kinds of power.
jbeane is offline   Reply With Quote
Old 05-24-2009, 09:45 AM   #8
Tech Master
 
8&stuff's Avatar
 
Join Date: Oct 2008
Location: In.
Posts: 1,401
Trader Rating: 55 (100%+)
Default

Quote:
Originally Posted by vladconnery View Post
Temping is only for safety measures. You don't want to be above 275 or below 200 on any engine. The exception to the rule being the now defunked GRP which operated right at 200 or below. Probally is why there now out of business. 300 is the magic kill number for engines. They won't die because you have reached this number but you should immediately shut it down and inspect for other problems I.e. Airleaks, cb bearings, engine bearings, engine alignment bad clutch shoes ect...

As far as RB's operating at 300 that's not true. My RB's and all I have ran across fall into the same operating range. Above 200 but below 275. A
Good temp is right about 220 or 230. A car coming off the track at 200 to 210 was probally operating below 200 in the infield (technical part of track). Where engine does not wind up as high creating heat to maintain correct engine temp.

What you want is constant smoke through entire rpm band. How much smoke depends on engine type and fuel used. You also want a snappy engine an engine that responds to throttle input at all bands. This is where your temp gauge comes in to play. As a reference to what the temp was to achieve correct performance. On that days ambient temp and humidity. Which as a rookie will start teaching you correct tuning points for your engine in different weather situations.
x2. but, some temp guns will read up to 30 degrees different. all winter i used a losi temp/tuner..consistantly 20 degrees higher than my exergen gun. i was seeing my rb at 280+(bad numbers, which was actually about 260 (but didnt know how different losi temp gauge was at time from better temp guns) and 260's a good number on an empty tank)and at times and my grp at 190 which means it was running at about 170. also keep temp gun very clean. dirt will give you a poor reading everytime.
__________________
Mark Buecker
8&stuff is offline   Reply With Quote
Old 05-24-2009, 10:30 AM   #9
Tech Master
 
mikesd1980's Avatar
 
Join Date: Mar 2009
Location: NE, Pa
Posts: 1,281
Trader Rating: 67 (100%+)
Default

Quote:
Originally Posted by vladconnery View Post
Temping is only for safety measures. You don't want to be above 275 or below 200 on any engine. The exception to the rule being the now defunked GRP which operated right at 200 or below. Probally is why there now out of business. 300 is the magic kill number for engines. They won't die because you have reached this number but you should immediately shut it down and inspect for other problems I.e. Airleaks, cb bearings, engine bearings, engine alignment bad clutch shoes ect...


What you want is constant smoke through entire rpm band. How much smoke depends on engine type and fuel used. You also want a snappy engine an engine that responds to throttle input at all bands. This is where your temp gauge comes in to play. As a reference to what the temp was to achieve correct performance. On that days ambient temp and humidity. Which as a rookie will start teaching you correct tuning points for your engine in different weather situations.
GRP's are one of the best engines that was made. They should not have went out of business. All engines run at different temps. GRP's have so much power running at low temp. I have non-tuned and tuned GRP and both of them are monsters. I dont want to buy another engine. Lets not forget the fuel mileage that they give. 10+ min without a problem and they last 10+ gallons.
__________________
Mike Diggs
Agama USA buggy
Agama USA Ebuggy - Airtronics M12
Agama A8T Truggy - Hobbyprousa -NemoRacing
"Our perception and attitude toward any situation will determine the outcome"
mikesd1980 is offline   Reply With Quote
Old 05-24-2009, 03:36 PM   #10
Tech Fanatic
 
vladconnery's Avatar
 
Join Date: Jun 2008
Location: Charlotte, NC
Posts: 992
Trader Rating: 35 (100%+)
Default

I was not refering to GRP's as bad engines. More I was pointing out the fact that because the standard for engine temp range is above 200 but below 275. People were running them in the standard range where there performance was based in another range (below 200).

Yes you are correct all engines even engines of the same manufactor and make operate in different ranges. No 2 engines are the same each is as individual as a fingerprint. Thats why the standard operating range is so wide.

As far as whether I like GRP's or not I don't. I have watch to many GRP's take a dump in the 1st 2 gallons. Some being driven by sportsmen and some by Pro's. To me if you get a good one you got a beast on your hands. If you don't you got a paperweight on your desk.

I'm the only one thats running picco that I have seen so far i my area. However I didn't choose it by choice. Ran across a good deal that included one. Hell how was I to know it was a true beast. So I bought another and will continue to buy them. One things for sure Its not flaming over heating. I never lack power and there is NO engines walking the dog here. I have ran up against pretty much all of them. I'm not saying I can out race them. heck not many can I out race, but power for power top end for top end the engine leaves no doubt!! Even against buggy's. I don't think I have the best engine it's just quality with a dump truck of power.

I'm glad your proud of your GRP's continue to run them. When you exhaust your GRP supply. Go get a Nova or a Picco and you will have more power. With waaaay more reliability. 10+ Gallons well thats some real rare performance there. I mean considering the short time that they have been on the market what 18-24 months. Your talking stuff that legends are made of you know. I mean thats some Nova, RB type longevity there. Those are companies that have been in the game heck almost as long as there has been a game. Oh the ever elusive 10+ min run time NO COMMENT!!!!

On a side note if it was such a great engine I'm sure Drake would have never walked away. Not to mention they would probably still be in biz if the engine held up it's end of the bargain. Performance, Power and reliability.
__________________
KO PROPO EURUS
Kyosho: TKI3, TKIe Tekin RX8 Gen2
vladconnery is offline   Reply With Quote
Old 05-25-2009, 05:42 AM   #11
Tech Master
 
mikesd1980's Avatar
 
Join Date: Mar 2009
Location: NE, Pa
Posts: 1,281
Trader Rating: 67 (100%+)
Default

Quote:
Originally Posted by vladconnery View Post
I was not refering to GRP's as bad engines. More I was pointing out the fact that because the standard for engine temp range is above 200 but below 275. People were running them in the standard range where there performance was based in another range (below 200).

Yes you are correct all engines even engines of the same manufactor and make operate in different ranges. No 2 engines are the same each is as individual as a fingerprint. Thats why the standard operating range is so wide.

As far as whether I like GRP's or not I don't. I have watch to many GRP's take a dump in the 1st 2 gallons. Some being driven by sportsmen and some by Pro's. To me if you get a good one you got a beast on your hands. If you don't you got a paperweight on your desk.

I'm the only one thats running picco that I have seen so far i my area. However I didn't choose it by choice. Ran across a good deal that included one. Hell how was I to know it was a true beast. So I bought another and will continue to buy them. One things for sure Its not flaming over heating. I never lack power and there is NO engines walking the dog here. I have ran up against pretty much all of them. I'm not saying I can out race them. heck not many can I out race, but power for power top end for top end the engine leaves no doubt!! Even against buggy's. I don't think I have the best engine it's just quality with a dump truck of power.

I'm glad your proud of your GRP's continue to run them. When you exhaust your GRP supply. Go get a Nova or a Picco and you will have more power. With waaaay more reliability. 10+ Gallons well thats some real rare performance there. I mean considering the short time that they have been on the market what 18-24 months. Your talking stuff that legends are made of you know. I mean thats some Nova, RB type longevity there. Those are companies that have been in the game heck almost as long as there has been a game. Oh the ever elusive 10+ min run time NO COMMENT!!!!

On a side note if it was such a great engine I'm sure Drake would have never walked away. Not to mention they would probably still be in biz if the engine held up it's end of the bargain. Performance, Power and reliability.
I dont know what engine I will get next. I am think I might try the Nova. That was my choice before the GRP. The only reason i got GRP is because my LHS guy runs them and he is one of the best around. I never thought of spending 350 for a engine till I saw his run at the track. When I got mines I saw the power and the mileage was good. When I heard the non-tuned run better than the tuned I brought one of them too.

On that side note-I dont know why they went out of business but oh well. All I can say is shit happens.
__________________
Mike Diggs
Agama USA buggy
Agama USA Ebuggy - Airtronics M12
Agama A8T Truggy - Hobbyprousa -NemoRacing
"Our perception and attitude toward any situation will determine the outcome"
mikesd1980 is offline   Reply With Quote
Old 05-25-2009, 07:04 AM   #12
Tech Master
 
scwrod's Avatar
 
Join Date: Apr 2008
Posts: 1,421
Trader Rating: 2 (100%+)
Default

you will be happy with a nova.
+4 - great for a Buggy
P5xst - Buggy/Truggy
Toro Nero - Truggy (insane in a Buggy)

All Great Mills.
__________________
hbracing.com tritonrc.com raceaka.com
scwrod is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Palmaris engine thread EdwardN Onroad Nitro Engine Zone 2533 08-12-2013 10:48 AM
Adam Drake talks about the new 8ight 2.0 Sylvain Nitro Off-Road 545 05-30-2010 05:57 PM
Orion Wasp .12 Engine tuning Sonter Nitro On-Road 6 06-25-2009 08:16 PM
I need advise on pinch test/tunning... Mpowerz Nitro Off-Road 28 01-16-2008 12:36 PM
Any Ninja / RB / OS / REX / Sirio Engine recommendation? JOHN TAN Singapore R/C Racers 105 04-22-2007 06:47 PM
TNT Discussion - MONSTER TRUCKING!!! BloodClod Singapore R/C Racers 4263 04-13-2006 09:48 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 12:21 AM.


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