Yes, it's not a Honda motor but bear with me. We're using a '99 Yamaha R6 engine in a custom race car. The problem is, we can't find a Tachometer that can handle the 15.5K redline. The bike tach is no good because it requires the stock ECU, which we cannot use. I have no idea how to fabricate or modify an existing tach. If it's possible we will do it, but is there anything on the market that would be suitable?

 

Lots of bike tachs dont need ecus
So i guess all you have to do is go find a bike tach.

 

Whoa, you are using this engine in a car??? An R6 engine has no torque what so ever. What exactly are you trying to do?

 

an r6 engine in a 400lb tube frame open wheel race car would be a lot of fun!

 

We're hoping it will be just under 500 lbs w/o driver. Trust me, we will have enough torque.

What other bike tachometers are out there? As far as I know the R6 is the only engine that revs this high

 

here we go, thats a tach for a VFR400
it should be the same for a VFR750 (which i believe is out in the states as well)

 

SPA makes a 0-16K RPM motorcycle tach, with a builtin water temp gauge and programmable shift light. Street and Competition (http://www.streetandcomp.com) sells 'em... Below is the manufacturer's page on the tach, and they list one that runs up to 18K rpm too.

http://www.spa-uk.co.uk/design/instru11.htm

 

Oh sweet, sort of like the T-REX with the 1100cc Kawasaki engine.

 

here is an open wheel race car powered by a cbr1100xx motor - no fiberglass cowling yet



more info and pics at http://home.mira.net/~iwd/openwheeler/index.html

 

what are u guys using as an ignition unit? Most honda tachs are current based and run of the ignition signal............. but aftermarket sounds like the best alternative.

 

We are using a Haltech ECU, not sure about ignition modules. To be honest, I am not the engine expert on the team. The car is Formula SAE car. Here's a pic of one of our previous cars

 

very cool, i would say do an aftermarket tach like suggested above.
*cough* hyabusa motor or zx12r motor*cough* Now that would be a bad *** car..... Good luck and let us know how it comes out.

Hmmm now that i think about it, hook a brotha up with some plans and a parts list. I have a complete running cbr 600 f2 motor complete with wiring ecu and all that stuff. I just need something interesting to put it in. hmmmm................................


[Modified by cbrman, 3:09 AM 8/16/2002]

 

hahaha, damn straight. Now you got me thinking too...

 

Well since the R6 doesn't really make power after like 13K... wouldn't it be easier to look for a tach that only goes that high??? or is there work done to the motor to make power past 13K???

Also...R6 tach has diagnstic functions on it also. Maybe that is why you need the ECU???

Good luck....sounds like fun!!! Some colleges in the US do projects with motocycle engines. Sounds pretty much like what you guys are doing. Have fun.

 

I wasn't aware that the R6 powerband was so low! Especially since we have to run through a 20mm intake restrictor, that is something to think about.

Formula SAE is a collegiate design competition. Our website is here

www.lehigh.edu/~insae/formula

Sponsorship donations are welcome

 

stack gauges can go up to 22k

 

Legends series cars run 1300cc Suzuki engines around here. I think they are from 'busas but the guy I was talking to (Driver) didn't know too much about them mechanically. Impressive stuff though, 80-90mph on the straights of a 1/4 mile oval.

The track:
http://www.geocities.com/~viewsfromt...ewhdaerial.jpg

The Cars:
http://www.legends-auto-racing.com/2lgnd.jpg

The driver I was talking to went from dead last (had fastest qualifying time) to second in 20 or 25 laps (field of about 25)and was catching up fast on the leader. That dude can drive.

-Dustin

 

that one is so ugly, i would much rather use the stock one
(heres mine, stock)


Redline 15,800




[Modified by kappastyles, 7:53 PM 8/27/2002]

 

Would be nice but like I said before the R6 Tach requires the R6 ECU to function.

The limit for our cars is 610cc, so pretty much everybody uses bike engines, although one team (Western Washington University) machined their own 600cc V-8! The thing was a sight to behold but unfortunately it never ran right, and it needed a remote starter which was blatantly in violation of the rules

 

The reason I said the VFR is cause it only requires the tach line to be connected; no ecu needed.
Lots of the older types requre no tachs.
And the best choice is to go aftermarket i guess. (i bought my tach for about.... $40)

 

Forty bucks? Sold!

 

Problem bieng is that this is in Japan.
its from a brand called Daytona (and im pretty sure they dont sell it over there)

 

we have a turbo cbr motor
in our sae car

lol

its cool as ****

temple u!

 

awsome..... I was gonna do a formula SAE car with a team at my school... it was all set to go... we passed all the red tape got approval.. and then they pulled out funding at the last second.. ble.. now i have to work on my own lil car.. del sol ..lol.. good luck man

 

That sucks man. We (and many other teams) get no funding from school. It's all about finding sponsors...