The Honda PCX / Forza / ADV150 / SH Forums

Pcxdemon wrote:

homie wrote:Tack is here and installed... 25 degrees so homie is not up for a sickle ride Whilst I wait for a heat wave is 850 RPM a typical idle speed?

Mine has always been at 1700rpm idle..

Forgot to say that you need to set it correctly to read for a 4st engine. Yours is probably set for multiple cylinders or a 2st setting hence it's reading half of 1700rpm (850rpm)..

Pcxdemon wrote:

Pcxdemon wrote:

homie wrote:Tack is here and installed... 25 degrees so homie is not up for a sickle ride Whilst I wait for a heat wave is 850 RPM a typical idle speed?

Mine has always been at 1700rpm idle..

Forgot to say that you need to set it correctly to read for a 4st engine. Yours is probably set for multiple cylinders or a 2st setting hence it's reading half of 1700rpm (850rpm)..

Set it to .5 and you will get the correct rpm readout.

I have the same tach and for some reason when I let off of the throttle the max bounces up to 15k, so I don't have a good read on max rpm's. let me know how yours works.

homie wrote:Tack is here and installed... 25 degrees so homie is not up for a sickle ride Whilst I wait for a heat wave is 850 RPM a typical idle speed?

That is half of the actual value. You need to change the setting to "single cylinder, four stroke engine". The directions are confusing. it will be correct when the idle speed is around 1,700.

vamootsman wrote: I have the same tach and for some reason when I let off of the throttle the max bounces up to 15k, so I don't have a good read on max rpm's. let me know how yours works.

All of you are right about the default settings being wrong for PCX and the Koso tach. I guess I got lucky when grounding and wrapped this around the plug wire effectively... it does hold the highest RPM for the session vanootsman.

I don't think this is suppose to be a permanent 100% duty cycle instrument is it? I'm leaving it anyway and routed it down the column and under the lower side panel but it's not waterproof or even resistant so might have to cover it in rain. You can't expect much for 50.00 I like it!

Set to .05 as vamootsman states - why our PCX's are 2 RPM signals per ignition is not for me to understand

homie wrote:

vamootsman wrote: permanent 100% duty cycle instrument is it?

Mine has been ridden in rain for two years and shows no sign of stress. I mounted it with two side tape right below the reset button on the dash.

sendler2112 wrote:

homie wrote:

vamootsman wrote: permanent 100% duty cycle instrument is it?

Mine has been ridden in rain for two years and shows no sign of stress. I mounted it with two side tape right below the reset button on the dash.

This is good news, thanks for all the help getting a decent product up and running. I would like to see your mount sometime. I wish there weren't snow flurries today or I'd be out there getting some engine RPM numbers under a load.

homie wrote:Set to .05 as vamootsman states - why our PCX's are 2 RPM signals per ignition is not for me to understand

It's a single cylinder 4 stroke?

Not being a motorhead this means the plug fires every other top dead center position? So a two stroke would fire every time the piston TDC's. Now that this is resonating a little how will I know if the TDC position I choose to make valve adjustments isn't in the wrong cycle? Never mind surely the SM won't lead me down the wrong path.

You can tell if you are coming up on power stroke a few ways. During a valve adjustment you will be looking at the cam lobes. Compression stroke will have neither valve being pressed open by a a lobe. You can also feel the compression or hear it whistling out if the plug is out.
.
TDC is not necessarily the best position to adjust the exhaust valve anyway. When you do a valve adjustment, just turn the engine until the cam lobe that you want to adjust is pointing away from the rocker more or less. Regardless of the crank pointer.

Wet streets and 47 degrees but I was able to get numbers and make bench today GPS wasn't keeping up with acceleration in real time fast enough to log an accurate range of RPMS verses speed but maybe looks normal enough to be done tuning OH boooooo, I forgot to tuck!

Please tell me how to interpret this information when you get a chance.

Use this YouTube direct link, change the settings - 1080p HD clear vision and go full screen FUN!
https://www.youtube.com/watch?v=5EQ6MHoIYAo

Can't even begin to see the tach or the speedo or the gps. All you really need to look at is the tach to see what rpm it pulls at when accelerating full throttle up to 50 mph.

looks like it was pulling at 7,400 rpm. It would probably do a quicker 0-50mph time with 12 gram weights to get you to 8,000. Maybe 11gm. That is some crazy long gearing with the big tire in addition to the NCY vario. 68mph at 8,200 rpm. Most stock bike are around 67mph at 9,600.

Thanks for the analysis sendler, don't know what longer gearing means for 2015 PCX owners but I'm happy. My goal was the look and feel of BIG rubber and to recover speed and performance with any extra considered a bonus. Mission accomplished If I want more perhaps next winter I will look at intake and exhaust and lose the 7 pound anchor we all carry under the scoot

There comes a time when as my wife said when I was remodeling the home and monking after every nick and nail pop...
"Hey Asperger!... it's time to live in it"

sendler2112 wrote:looks like it was pulling at 7,400 rpm. It would probably do a quicker 0-50mph time with 12 gram weights to get you to 8,000. Maybe 11gm. That is some crazy long gearing with the big tire in addition to the NCY vario. 68mph at 8,200 rpm. Most stock bike are around 67mph at 9,600.

Definitely need to try the lighter rollers. At full throttle with 12.5g I pull at 8-8200rpm's.

vamootsman wrote:

sendler2112 wrote:looks like it was pulling at 7,400 rpm. It would probably do a quicker 0-50mph time with 12 gram weights to get you to 8,000. Maybe 11gm. That is some crazy long gearing with the big tire in addition to the NCY vario. 68mph at 8,200 rpm. Most stock bike are around 67mph at 9,600.

Definitely need to try the lighter rollers. At full throttle with 12.5g I pull at 8-8200rpm's.

You also have the stock tires. I think I'll try 12g's next time I order some parts. In other news, I think I'm going to ditch the pod filter and put the airbox back on. That 240 mi round trip in a day was annoying on the ears.

ScooterMan wrote:

vamootsman wrote:

sendler2112 wrote:looks like it was pulling at 7,400 rpm. It would probably do a quicker 0-50mph time with 12 gram weights to get you to 8,000. Maybe 11gm. That is some crazy long gearing with the big tire in addition to the NCY vario. 68mph at 8,200 rpm. Most stock bike are around 67mph at 9,600.

Definitely need to try the lighter rollers. At full throttle with 12.5g I pull at 8-8200rpm's.

You also have the stock tires. I think I'll try 12g's next time I order some parts. In other news, I think I'm going to ditch the pod filter and put the airbox back on. That 240 mi round trip in a day was annoying on the ears.

Honda are old hands at the engineering kind of thing

ScooterMan wrote:

vamootsman wrote:

sendler2112 wrote:looks like it was pulling at 7,400 rpm. It would probably do a quicker 0-50mph time with 12 gram weights to get you to 8,000. Maybe 11gm. That is some crazy long gearing with the big tire in addition to the NCY vario. 68mph at 8,200 rpm. Most stock bike are around 67mph at 9,600.

Definitely need to try the lighter rollers. At full throttle with 12.5g I pull at 8-8200rpm's.

You also have the stock tires. I think I'll try 12g's next time I order some parts. In other news, I think I'm going to ditch the pod filter and put the airbox back on. That 240 mi round trip in a day was annoying on the ears.

Is this airbox the same part you recommended I cut off?

[/quote]
Is this airbox the same part you recommended I cut off?[/quote]

Not cut off, but you can remove the outer snorkel and removed the "cheese grater" & screen behind the air filter. I may experiment with cutting additional holes in the airbox or drilling holes near the existing opening at the front of the airbox.

Anyway, I'm going to drive with the airbox on for now and see if I feel any difference from running the pod filter. That reminds me, I've been meaning to price the airbox lid in case I don't like the holes I cut in it!