R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-19-2009, 04:25 PM   #1
Tech Addict
 
PrimeAKF11's Avatar
 
Join Date: Aug 2007
Location: Voorhees, NJ
Posts: 706
Trader Rating: 4 (100%+)
Default Top speed of a 17.5 car?

Yes I know I'm essentially asking what a typical 7 yrs old asks, but I got into an argument with my cousin and I couldn't help it. Can a 17.5 TC, in ROAR legal configuration, hit 40mph?

Reason I'm asking, my cousin apparently got the onboard speedometer thingy from Venom and claims that his 17.5 TC (it was either Cyclone S or Xray T2R, I'm not sure) was clocked at 40mph (65km actually). I told him that there is no way a 17.5 TC is reaching that kind of speed and given that a 17.5 motor is only about 2200kV or so he is lucky to see 30mph. Then he told me that with the latest speedos that advance timing, and with the additional timing he can dial in via the turbo feature on his Tekin RS, it is entirely possible for a 17.5 car to reach 40mph and that his speedo is indeed correct.

What do you guys think? Has anyone ever put a radar gun to a 17.5 car? I still don't believe it but there is some validity in his claims I think. He did admit that the track had a long 180ft straightway and his car was geared tall at 3.7 FDR or so.
__________________
Best rubber tires>> www.SweepRacingUSA.com
For your Team Magic G4 parts needs>> www.bluesunhobbies.com
HD Videos of Blue Diamond Onroad Raceway!!! 200ft+ straight of fury!! >> http://www.rctech.net/forum/racing-forum/406318-2nd-annual-pete-johnson-have-nice-day-memorial-race-5.html
PrimeAKF11 is offline   Reply With Quote
Old 10-19-2009, 04:29 PM   #2
Tech Elite
 
L.Fairtrace's Avatar
 
Join Date: Apr 2004
Location: Beyond the Wall
Posts: 3,772
Trader Rating: 23 (100%+)
Send a message via AIM to L.Fairtrace
Default

Yes

/thread
__________________
Awesomatix USA - EaMotorsports - RocheUSA - MonTech - Sanwa - BSR Racing Tires - TQ Wire - Solaris Racing Tires - Side Piece Racing

180 and 360 Raceway. Best on the East Coast. Take your pick
L.Fairtrace is offline   Reply With Quote
Old 10-19-2009, 04:32 PM   #3
Tech Champion
 
MikeXray's Avatar
 
Join Date: Oct 2006
Location: New York
Posts: 5,749
Trader Rating: 73 (100%+)
Default

Quote:
Originally Posted by PrimeAKF11 View Post
Yes I know I'm essentially asking what a typical 7 yrs old asks, but I got into an argument with my cousin and I couldn't help it. Can a 17.5 TC, in ROAR legal configuration, hit 40mph?

Reason I'm asking, my cousin apparently got the onboard speedometer thingy from Venom and claims that his 17.5 TC (it was either Cyclone S or Xray T2R, I'm not sure) was clocked at 40mph (65km actually). I told him that there is no way a 17.5 TC is reaching that kind of speed and given that a 17.5 motor is only about 2200kV or so he is lucky to see 30mph. Then he told me that with the latest speedos that advance timing, and with the additional timing he can dial in via the turbo feature on his Tekin RS, it is entirely possible for a 17.5 car to reach 40mph and that his speedo is indeed correct.

What do you guys think? Has anyone ever put a radar gun to a 17.5 car? I still don't believe it but there is some validity in his claims I think. He did admit that the track had a long 180ft straightway and his car was geared tall at 3.7 FDR or so.
Its not very scientific, but cars on my road normally drive 35-40 and I chase them down with my 17.5 rcgt car when I'm bored
__________________
Mike L. Awesomatixusa.com | TQWire.com | Islandraceway.com |JacksonRCracing.com | Horsham RC | Sweepracingusa.com
MikeXray is offline   Reply With Quote
Old 10-19-2009, 04:34 PM   #4
Tech Elite
 
cyclone x's Avatar
 
Join Date: Jul 2008
Location: Gaithersburg MD
Posts: 2,547
Trader Rating: 3 (100%+)
Default

on my track we normally top at 30 before the sweeper
__________________
Chase Chandler
Sponsors:HOTBODIES Express .The Track. Stevo Racing
Cars: VE8, F104 PRO, B4.1, HPI BLITZ, Losi SCTE
cyclone x is offline   Reply With Quote
Old 10-19-2009, 04:53 PM   #5
Tech Master
 
Scott B's Avatar
 
Join Date: Dec 2002
Location: NOR-CAL
Posts: 1,248
Trader Rating: 43 (100%+)
Default

IF you were to gear it for just a top speed run, then I would say yes. But I doubt it could happen on a track geared for a 5-6 min race.

My local track's straight is 160' long and thats big for most electric tracks. Eariler this year Randy Pike of tekin came out and tested with another local tekin driver with a 13.5, I was out there with my SPX. We had a rader gun sitting at the end of the straight.

The highest topspeed any of us could get was 38mph and as I sayed that was with a 13.5 and advanced timing speedos.
__________________
Mugen Racing USA, Sweep Racing Tires, R1 Wurks, Protoform, Speedworld Raceway...

"On-road is racing.. off-road is 50% competitive jumping and 50% crash avoidance"...
Scott B is offline   Reply With Quote
Old 10-19-2009, 05:04 PM   #6
Tech Addict
 
PrimeAKF11's Avatar
 
Join Date: Aug 2007
Location: Voorhees, NJ
Posts: 706
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Scott B View Post
IF you were to gear it for just a top speed run, then I would say yes. But I doubt it could happen on a track geared for a 5-6 min race.

My local track's straight is 160' long and thats big for most electric tracks. Eariler this year Randy Pike of tekin came out and tested with another local tekin driver with a 13.5, I was out there with my SPX. We had a rader gun sitting at the end of the straight.

The highest topspeed any of us could get was 38mph and as I sayed that was with a 13.5 and advanced timing speedos.
That's what I thought. Do you know if the Tekin guys had the turbo feature on? I know it adds speed considerably but even then I doubt a 17.5 can hit 40mph when a 13.5 is struggling to touch it.
__________________
Best rubber tires>> www.SweepRacingUSA.com
For your Team Magic G4 parts needs>> www.bluesunhobbies.com
HD Videos of Blue Diamond Onroad Raceway!!! 200ft+ straight of fury!! >> http://www.rctech.net/forum/racing-forum/406318-2nd-annual-pete-johnson-have-nice-day-memorial-race-5.html
PrimeAKF11 is offline   Reply With Quote
Old 10-19-2009, 05:09 PM   #7
Tech Master
 
Scott B's Avatar
 
Join Date: Dec 2002
Location: NOR-CAL
Posts: 1,248
Trader Rating: 43 (100%+)
Default

Quote:
Originally Posted by PrimeAKF11 View Post
That's what I thought. Do you know if the Tekin guys had the turbo feature on? I know it adds speed considerably but even then I doubt a 17.5 can hit 40mph when a 13.5 is struggling to touch it.
I think they were testing early versions of what came out later to be the v200 software. If I remember correctly, to get there car up to 38mph they had to gear the crap out of it and it was over 200d after 5 laps, not really "race" gearing. LOL
__________________
Mugen Racing USA, Sweep Racing Tires, R1 Wurks, Protoform, Speedworld Raceway...

"On-road is racing.. off-road is 50% competitive jumping and 50% crash avoidance"...
Scott B is offline   Reply With Quote
Old 10-19-2009, 05:28 PM   #8
Tech Elite
 
oeoeo327's Avatar
 
Join Date: Oct 2008
Posts: 3,644
Trader Rating: 74 (100%+)
Default

Quote:
Originally Posted by MikeXray View Post
Its not very scientific, but cars on my road normally drive 35-40 and I chase them down with my 17.5 rcgt car when I'm bored
+1 - I do the same thing (with an RCGT car), and live on a road where most drivers are going 35ish.
__________________
Founding member of the Solid Gold Racing Team - Mediocrity, redefined...
oeoeo327 is offline   Reply With Quote
Old 10-19-2009, 05:44 PM   #9
Tech Master
 
linger's Avatar
 
Join Date: Aug 2001
Location: Retired
Posts: 1,132
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Scott B View Post
The highest topspeed any of us could get was 38mph and as I sayed that was with a 13.5 and advanced timing speedos.
Scotty - 38 MPH 13.5 Fail!

At the Reedy race, the 17.5 radar record goes to Juan Aveytia with his super efficient Tamiya Evo4. It clocked in at 37mph with a 17.5 and that was with race gearing.
My best was a 35mph. Most people were in the 33 range.
__________________
I used to be a spitter, now I'm a swallower. I graduated.
linger is offline   Reply With Quote
Old 10-19-2009, 05:49 PM   #10
Tech Master
 
Scott B's Avatar
 
Join Date: Dec 2002
Location: NOR-CAL
Posts: 1,248
Trader Rating: 43 (100%+)
Default

Quote:
Originally Posted by linger View Post
Scotty - 38 MPH 13.5 Fail!

At the Reedy race, the 17.5 radar record goes to Juan Aveytia with his super efficient Tamiya Evo4. It clocked in at 37mph with a 17.5 and that was with race gearing.
My best was a 35mph. Most people were in the 33 range.
Well I guess rader guns are like dynos, you never get the same numbers from different units.

The rader gun we used was a police rader so I would say ours was more accurate then what you used!!!
__________________
Mugen Racing USA, Sweep Racing Tires, R1 Wurks, Protoform, Speedworld Raceway...

"On-road is racing.. off-road is 50% competitive jumping and 50% crash avoidance"...
Scott B is offline   Reply With Quote
Old 10-19-2009, 05:51 PM   #11
Tech Addict
 
PrimeAKF11's Avatar
 
Join Date: Aug 2007
Location: Voorhees, NJ
Posts: 706
Trader Rating: 4 (100%+)
Default

either way I think I lost the bet
__________________
Best rubber tires>> www.SweepRacingUSA.com
For your Team Magic G4 parts needs>> www.bluesunhobbies.com
HD Videos of Blue Diamond Onroad Raceway!!! 200ft+ straight of fury!! >> http://www.rctech.net/forum/racing-forum/406318-2nd-annual-pete-johnson-have-nice-day-memorial-race-5.html
PrimeAKF11 is offline   Reply With Quote
Old 10-19-2009, 05:56 PM   #12
Tech Elite
 
stitchy's Avatar
 
Join Date: Feb 2008
Location: SoCal
Posts: 3,794
Trader Rating: 13 (100%+)
Default

seems pretty fast for "stock." hey, what's stock again?
__________________
Speedtechhobbies.com
stitchy is offline   Reply With Quote
Old 10-19-2009, 05:58 PM   #13
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

40mph with 17.5, no problem. We normally hit 34ish on our outdoor track (not using full straight). Maybe higher. Some cars aren't even topped out by the end of the straight. Infact, 34mph was the average for 27t back in the day here. We did this with radar gun at end of straight.
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Old 10-19-2009, 06:06 PM   #14
Tech Master
 
linger's Avatar
 
Join Date: Aug 2001
Location: Retired
Posts: 1,132
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Scott B View Post
Well I guess rader guns are like dynos, you never get the same numbers from different units.

The rader gun we used was a police rader so I would say ours was more accurate then what you used!!!
you should be thankful that Juan was not using the "one alligator, two alligator" method that he normally uses.
__________________
I used to be a spitter, now I'm a swallower. I graduated.
linger is offline   Reply With Quote
Old 10-19-2009, 06:13 PM   #15
Tech Lord
 
syndr0me's Avatar
 
Join Date: Dec 2004
Location: 5280 Raceway
Posts: 13,140
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by linger View Post
Scotty - 38 MPH 13.5 Fail!

At the Reedy race, the 17.5 radar record goes to Juan Aveytia with his super efficient Tamiya Evo4. It clocked in at 37mph with a 17.5 and that was with race gearing.
My best was a 35mph. Most people were in the 33 range.
If that's the same Evo4 his friend used in Vegas, then I'm a believer. That thing was like cheating on the straights. Kinda makes me want to find an Evo5MS for some 17.5 action.
syndr0me is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mi3 Rolling Chassis, Novak GTB ESC, Speed Passion 17.5 Stevo_Aus Australia For Sale/Trade 7 05-11-2011 05:04 PM
Lipo's in 17.5 class paraletic Electric On-Road 49 10-10-2009 12:00 AM
gun 17.5 brushless??? decibels Electric On-Road 14 08-21-2009 06:13 AM
17.5 Question - Performance across brands? Syber Serulean Electric On-Road 34 09-29-2008 12:39 PM
17.5 in Off-Road trailranger Electric Off-Road 141 06-18-2008 07:18 PM
17.5 vs 27t robk Electric On-Road 64 03-18-2008 07:03 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 02:02 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