R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-04-2005, 01:35 PM   #16
Tech Champion
 
Davidka's Avatar
 
Join Date: Oct 2004
Posts: 9,930
Trader Rating: 77 (100%+)
Default

Engine modding is about timing and flow, not grinding and poilshing. Just look inside some of OS' latest engines. 3 ports and very little in the way of trickery. It's all about timing. Don't spend $80 trying to make a $125 engine faster. Buy a $250-$300 engine and know that it's right already.
Davidka is offline   Reply With Quote
Old 10-04-2005, 02:22 PM   #17
Tech Master
 
Jeremy Felles's Avatar
 
Join Date: Nov 2004
Location: Fullerton, CA
Posts: 1,056
Default

mgt-

My comment wasn't geared towards TNT. It sounds like they have their stuff together. However; this thread isn't solely a TNT thread, and as Aaron mentioned there are a lot of "sub par" modders out there.
__________________
"Majority rule don't work in mental institutions"
Jeremy Felles is offline   Reply With Quote
Old 10-04-2005, 03:56 PM   #18
Tech Regular
 
Join Date: Sep 2005
Location: Au
Posts: 329
Default

when people like mgtman comes on a forum and promotes tntmods, especially over more established modders, Like EB or Jim Hott, then you have to wonder about his motives....


where did u get all those pics off tnt mods from? why would someone go to so much effort to give out information promoting someone else?

tnt have done lots of advertising in magazines and internet forum, it doesnt give him instant credibility
qwerty is offline   Reply With Quote
Old 10-04-2005, 04:04 PM   #19
Tech Adept
 
Juall's Avatar
 
Join Date: Dec 2004
Location: bullet town
Posts: 104
Default

I was planning on a new engine and getting it reworked a bit. The main thing that most everyone offers that I see so far is better fuel mileage, and it's my 1st priority. 2cd would be an overall easier to drive, faster motor. By what the guys at TNT have told me so far, looks promising. But for the most part, I'm gonna check into it further before sending just anyone an engine and 80 bucks

P.S.
And thanks Aaron for the heads up
__________________
the more we cherish heaven, the less we'll covet the earth
Juall is offline   Reply With Quote
Old 10-04-2005, 04:28 PM   #20
Tech Regular
 
Join Date: Sep 2005
Location: Au
Posts: 329
Default

Quote:
Originally Posted by Juall
I was planning on a new engine and getting it reworked a bit. The main thing that most everyone offers that I see so far is better fuel mileage, and it's my 1st priority. 2cd would be an overall easier to drive, faster motor. By what the guys at TNT have told me so far, looks promising. But for the most part, I'm gonna check into it further before sending just anyone an engine and 80 bucks

P.S.
And thanks Aaron for the heads up
the engien you have described is an unmodified OS VSPEC.

Run time 8 to 10minutes
Insane power all thru the rev range


best of all... they only cost $230!!!!
qwerty is offline   Reply With Quote
Old 10-04-2005, 04:49 PM   #21
Tech Adept
 
Juall's Avatar
 
Join Date: Dec 2004
Location: bullet town
Posts: 104
Default

I had also given a thought to that as well qwerty. Either that engine or an R&B S5. I'm sure both engines would suit my need well. It just seemed to me that I'm pleased for the most part with my current engine, but would like better fuel mileage. From what I've read modding will give you about 30-40% better fuel mileage. So I'm about 7-8 now, so should go anywhere from 9-11 with modding. That is, if where all the places I've been the information is correct however, as that's about the most I have to go on atm.
__________________
the more we cherish heaven, the less we'll covet the earth
Juall is offline   Reply With Quote
Old 10-04-2005, 05:41 PM   #22
Tech Regular
 
Join Date: Sep 2005
Location: Au
Posts: 329
Default

Quote:
Originally Posted by Juall
From what I've read modding will give you about 30-40% better fuel mileage..
lol yeah whoever feed u that is bullshitting you....

end of the day, the engine is restriccted to what sort of engine you have to begin with.... u cant turn a toyota starlet into a comaro v8, no matter what u do to it, it sometimes better to buy something better to start off without modifying it
qwerty is offline   Reply With Quote
Old 10-04-2005, 07:19 PM   #23
Tech Addict
 
SpeedBump57's Avatar
 
Join Date: Aug 2005
Posts: 660
Default

30 to 40 seconds maybe!
SpeedBump57 is offline   Reply With Quote
Old 10-04-2005, 07:37 PM   #24
Tech Elite
 
Join Date: Aug 2003
Location: Henderson, NV
Posts: 4,148
Trader Rating: 28 (100%+)
Send a message via AIM to Scott Fisher
Default

Jim Hottinger... He did all the mods for Paris for a number of years and still does them now.

www.fusionmotorsports.com

Give him a call. Yes, he sponsors me, but I don't think anyone out there can show a track record like him.
__________________
| Capricorn | Ybslow | Proline-Protoform | Johnny Bravo Racing | Desoto Racing | Murnan Modified | Matrix Tires | Powermaster Fuel |
Scott Fisher is offline   Reply With Quote
Old 10-04-2005, 09:53 PM   #25
Tech Fanatic
 
Join Date: Feb 2002
Location: Greenwood, IN
Posts: 807
Trader Rating: 4 (100%+)
Send a message via Yahoo to windellmc
Default

If all you care about is fuel economy, get a Collari 3 port. It will get 10-12 minutes and only costs $200 at most.

The V-Spec has great power and economy but the cheapest I have seen them for is $270 and that is before you add in the almost certain rear bearing replacement that within the first 1-2 gallons.

If you are serious about racing buy one of the good fuel economy engines (Vspec, Collari 3 or 7 port, or P5) and run it stock. Anything over 8 minutes is really not necessary unless it gets you over 10 minutes. Mains are usually 10, 15, 20, 30 minutes. 7.5 minute pit stops will get you through most mains nicely. 10 minutes can give an advantage but if the engine is not designed that way a modder can only do so much.
windellmc is offline   Reply With Quote
Old 10-05-2005, 06:07 AM   #26
Tech Elite
 
JusBox's Avatar
 
Join Date: Sep 2003
Location: Central VA
Posts: 2,170
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by windellmc
If all you care about is fuel economy, get a Collari 3 port. It will get 10-12 minutes and only costs $200 at most.

The V-Spec has great power and economy but the cheapest I have seen them for is $270 and that is before you add in the almost certain rear bearing replacement that within the first 1-2 gallons.

If you are serious about racing buy one of the good fuel economy engines (Vspec, Collari 3 or 7 port, or P5) and run it stock. Anything over 8 minutes is really not necessary unless it gets you over 10 minutes. Mains are usually 10, 15, 20, 30 minutes. 7.5 minute pit stops will get you through most mains nicely. 10 minutes can give an advantage but if the engine is not designed that way a modder can only do so much.
The collari 3 port will cost more than just 200 since you need to swap the carb out with something that actually works.
JusBox is offline   Reply With Quote
Old 10-05-2005, 07:43 AM   #27
Tech Fanatic
 
Join Date: Feb 2002
Location: Greenwood, IN
Posts: 807
Trader Rating: 4 (100%+)
Send a message via Yahoo to windellmc
Default

Supposedly they have made the 3 port carb slide out of a more durable material. That and setting the endpoints so the slide only opens enough to clear the carb throat instead of having it pull until it hits a stop are supposed to fix the problem.
windellmc is offline   Reply With Quote
Old 10-08-2005, 06:07 PM   #28
Tech Rookie
 
Join Date: Oct 2005
Posts: 1
Default

Well, it's good to see that engine porting is a popular subject here. I'm new to the R/C world, having just gotten into it over the summer with a buddy and a couple of Electric R/C Trucks. Built a track in his backyard too.
I'm definately not new to 2-stroke engine building, and what I see in this forum has had me drooling for days. I finally joined yesterday. I use computer simulation, 2D & 3D CAD, and finite element analysis to design and modify 2-stroke engines for snowmobiles, watercraft, outboards, dirt bikes and competition chainsaws. The stuff you guys are running is insane!!! 30,000 rpm's on Nitro, unreal!!! Hope you don't mind if I just observe for a while in order to learn more about these wicked little engines you are using. I'll pop in to a thread once in a while if I feel I can lend a little insight from 20 yrs. of racing, riding and modifying engines. I've got a lot to learn this winter, and hopefully I'll start putting a truck together after christmas. We have a local Off-Road R/C race track in Kelowna BC, wondering if anyone else from Canada is around on this forum?
JustPinIt is offline   Reply With Quote
Old 10-08-2005, 07:02 PM   #29
Tech Master
R/C Tech Charter Subscriber
 
Join Date: Jan 2002
Location: Margaritaville
Posts: 1,957
Default

Rick Brake at RBMods is great. A few of my friends are sponsor by him and their motors fly and last for a very long time. Shoot Rick will call you if he hasn't heard from you in a while just to make sure everything is ok. If he wasn't so backed up with orders I would send some motors his way.
NismoSkyline17 is offline   Reply With Quote
Old 10-08-2005, 07:43 PM   #30
Tech Elite
 
WheelNut's Avatar
 
Join Date: Jan 2003
Location: Edmonton, Ab
Posts: 3,210
Trader Rating: 5 (100%+)
Send a message via MSN to WheelNut
Default

JustPinIt- yep there are lots of us Canadians on these forums (I'm one of 'em!), just check out the Canadian RC scene forum.
WheelNut is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Please suggest first on road car... therealj Electric On-Road 32 08-06-2008 11:02 AM
New to hobby, suggest starter kit The_Raptor Electric On-Road 18 06-06-2006 10:35 AM
Which would you suggest? onebeatuptc3 Electric On-Road 3 10-02-2004 07:24 PM
CA Tire Glue - what would you suggest? puma1824 Nitro On-Road 14 05-17-2003 04:09 AM
Which radio would you suggest to get...? ChinBoy Nitro On-Road 28 01-26-2002 10:38 AM



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 03:40 AM.


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