get your free PowerNOW!

[yamaha.dude]

Just finished preparing a info sheet with pictures and instructions to do your own PowerNOW! mod...

[Only registered and activated users can see links. ]

Click it, or right click and "Save as..." The file is about 300KB...

Cheers,

David

[Rockey]

Thats awesome, how much did it all cost for you?

[yamaha.dude]

As you can see, the only material you need is a piece of 1mm thick Stainless Steel less than 2 inches square... you would probably find it in the off-cut bin at some metal merchants...

As long as it's flat, you are in business... cut carefully, use the template on the PDf file... just make sure you print it at 100% size...

David

[jmiakaike]

Originally posted by yamaha.dude
As you can see, the only material you need is a piece of 1mm thick Stainless Steel less than 2 inches square... you would probably find it in the off-cut bin at some metal merchants...

As long as it's flat, you are in business... cut carefully, use the template on the PDf file... just make sure you print it at 100% size...

David

Yamaha.dude..
not to take away from the work done, an awesome write up, but emailed chris about it.. the plate needs to be longer..

the one i copied from an actually bought powernow misses the slide by about 1mm... and the top of the 'T' shaped plate should be on the air filter side.... other than that, pretty much right on...
he even made the same mistake i did by cutting the first lines wrong....

if anyone else has any questions, feel free to ask me..

maybe i should just make and sell the plates... lol..

[Madman393]

Originally posted by jmiakaike
Yamaha.dude..
not to take away from the work done, an awesome write up, but emailed chris about it.. the plate needs to be longer..

the one i copied from an actually bought powernow misses the slide by about 1mm... and the top of the 'T' shaped plate should be on the air filter side.... other than that, pretty much right on...
he even made the same mistake i did by cutting the first lines wrong....

if anyone else has any questions, feel free to ask me..

maybe i should just make and sell the plates... lol..

When you do, you can put it in teh store that is coming to a board near you--real soon.

[jmiakaike]

Originally posted by Tman393
When you do, you can put it in teh store that is coming to a board near you--real soon.

Tyler,
if you think it would be a good idea. the real ones are ridiculously expensive,

james

[Woody_393]

Originally posted by jmiakaike
Tyler,
if you think it would be a good idea. the real ones are ridiculously expensive,

james

Yes they are...

[yamaha250F]

Ok so who has had done it? How did it work, how long did it take? And also did you have to change your jetting

[jmiakaike]

[QUOTE]Originally posted by yamaha250F
[B]Ok so who has had done it? How did it work, how long did it take? And also did you have to change your jetting [quote]


i have made quite a few of them.. the first took a while since it was the first.. the whole job, including scoring the bell takes maybe an hour or two.. (i like to be careful and pretty exact)

they work as well if not better than advertised.. i feel it is equivalent to the GB/BK mod in terms of improvement fo throttle response and being able to feel the difference

[Woody_393]

I'm surprised the Carb companies don't do this... It would be easiest for them in my calculations.

[Blue Beast]

deleted, cant get the pics to go

[jmiakaike]

Originally posted by Blue Beast
deleted, cant get the pics to go mad:

blue..
didn't work...

[Blue Beast]

Yeah, gave up on the pics, i got some pics sent to me from toyrona, he says it should miss the slide by only 1 mm if any one wants the other pics i can email them.

[jmiakaike]

Originally posted by Blue Beast
Yeah, gave up on the pics, i got some pics sent to me from toyrona, he says it should miss the slide by only 1 mm if any one wants the other pics i can email them.

Blue,
i was just curious about the pics..
... BrandonW used the one i sold him and was impressed enough to write a pretty long write up of it over on TT that started the do it yourself post. Chris from oz emailed me and i told him how to do it...

was fun to watch the nay sayers feed on that one..


are they the same pics as the ones yamaha.dude posted above?

[Blue Beast]

Not the same pics, toyrona's Toyota corona is in the background, he's got it sitting on his wheelie bin, his mod that is

The nay sayers probably cant grasp the concept of the increased air speed.

[jmiakaike]

Originally posted by Blue Beast
Not the same pics, toyrona's Toyota corona is in the background, he's got it sitting on his wheelie bin, his mod that is

The nay sayers probably cant grasp the concept of the increased air speed.

toyota corona.. we used to have one when my dad was stationed in korea.. cool car...

you can email the pics to me..

[Only registered and activated users can see links. ] would be interested in seeing them..

thanks..
i can send you a pic of mine if interested...

[Woody_393]

If you want you can email them to me, and I'll post them, either by making them smaller or via a link to my web server.

jwoody@zwoody.com if you need it.

[yamaha.dude]

It is more than just the airflow speed... though ultimately that is the large part... it is basically presenting a smaller size at part throttle openings and stopping a lot of the air hitting the slide and then having to deflect down the face of the slide and then turn rightangles into the throat of the carb... I will draw a pic of what would be the ultimate powernow type device... a constantly variable deflector that moved in sync with the slide...

David

[Blue Beast]

Its O.K. i have the idea, i also have some other ideas i want to try with it.

oops just read your post again, show me, show me, show me.


Just to add to that, my porting experience tells me that when the air hits the slide it could almost block half that hole that is exposed.

[jmiakaike]

Originally posted by yamaha.dude
It is more than just the airflow speed... though ultimately that is the large part... it is basically presenting a smaller size at part throttle openings and stopping a lot of the air hitting the slide and then having to deflect down the face of the slide and then turn rightangles into the throat of the carb... I will draw a pic of what would be the ultimate powernow type device... a constantly variable deflector that moved in sync with the slide...

David

yamaha.dude..

funny, i was thinking of the same thing..
trying to find a way to attach a plate to the slide and would move up with the slide, if i find a way to make it work, i will let people know.