Awesome guage!

I have an Acewell like OMR's. The only thing I wish is it was about 50% larger.

Was out in the garage today and the thought of what the rpm was at the 106MPH run was unknown... So, turn on the Acewell and see what was recorded...

In comparing to the provided Gear Calc, not that far off....

Still had throttle left to boot.... Calcs out ~ 118mph...

If interested...ACEWELL Speedo's....
www.electrosport.com/street/speedometers.php

Speed sensing several ways... but most are inductive or magnetic pick ups...

If you research into OEM specs on newer bikes, they pick up or count cc sprocket tooth counts in the tranny gear box areas.

Easiest, magnet on the front rotor...

Tach, conductor soldered into a coil primary feed...
Speed... Provided rotor magnet and fab up a mounting bracket...

OMR

www.electrosport.com/street/speedometers-series-4000.php

I was looking through my Clymer manual and noticed it stated that "'77 and later models use resistor plug caps". The PO of my bike has replaced the stock coils with Dyna greys and the wires are yellow (Accel?) 7mm copper core non-resistor caps. The stock IC igniter and sensors are still in use but the ballast resistor is removed and I installed the WG mod.

Should I be using the resistor cap wires? I recently replaced my plugs with BR8ES (resistor) plugs to cut down on the fluctuation of my Acewell tach. Does this negate the use of resistor caps?

There's no major problem with the bike, I'm just double checking things while working on a small stumble off idle I experience and thought I might replace the plug wires as they look quite worn in places.

Sonny

Obviously this got me thinking me more about this... :blush: Oh well, deal with it.... :laugh: :laugh: :laugh:

As can be reviewed below for MY SETUP....

@ 15/35 OEM sprockets, 2.33 ratio @ 110.6mph @ 8Krpm....

@ Present setup 15/37 OEM sprockets, 2.46 ratio @ 104.7mph @ 8Krpm....

@ 14/33 OEM sprockets, 2.35 ratio @ 109.5mph @ 8Krpm....

So by going up 2 teeth on the rear, leaving front alone due to my ZX6 pivot tube size I gained significantly in accelerations. Yes, lost top end speed which I didn't care about in my engine build... Remember, I went with low/mid range performance in my camshaft selection...

Considering the above mentioned, 1015cc kit, Keihin CR29mm carbs and tire/rim sizes, at 65mph my tach displays 4500rpm. The Acewell 2802 tach has a +/- 300rpm tolerance... Then throw in timing advance/retarded etc... So fairly close to the calculated speed/rpm values....

2.46 - 2.33 = .13 difference!
2.35 - 2.33 = .02 difference! :blush:

Now if you would have went one down on the front and 2 up on the rear (14/35 combo) ... ....

@ 14/35 OEM sprockets, 2.50 ratio @ 103.2mph @ 8Krpm....
2.50 - 2.33 = .17 difference! :woohoo:

Just for shits&giggles....

@ 14/37 OEM sprockets, 2.64 ratio @ 97.7mph @ 8Krpm....
2.64 - 2.33 = .31 difference! :woohoo:
Good luck on keeping this front end on the ground!

In any case, seems you got the other issues resolved from last week and are back on the road... Sweet!

OMR

OMR has the acewell and he did a whole writeup on it in the projects section last time i talked to him about it he was happy with it.

Yes sir doing fine. The acewell guage that Kano posted has all kinds of adapters I'm kinda leaining in that direction as they have an adapter that will run off the speedo drive as on my front end the speedo drive doubles as a wheel spacer. The guage is still electronic but get converted. Kinda cool. Have you made any more progress with your bike?

i thought it was an acewell so i went to their site to check it out and the website completely infected my computor freakin chinese crap it took me hours to get this dam thing to work again don't go on there web site it's freakin nasty with what it will do.

Dave, upon closer inspection you're right, the Acewell instructions actually shows both methods, the wrap method is shown on the front page while the direct method is shown in the diagram. Seems I missed the fine print...

Bully, no problem, only happy to help.