Dyno results thread
Re: Dyno results thread
In my simple mind turbulence and availability.... think that is the thing to look at.... if it has lots of undisturbed air to gulp down then lovely.
The shape at the top of the stack can promote acceleration so it can be considered as partially important..
The shape at the top of the stack can promote acceleration so it can be considered as partially important..
Why ask... sometime you just go to do it and find out?
- agentpineapple
- Posts: 15123
- Joined: Sat Mar 26, 2011 9:16 pm
Re: Dyno results thread
very interesting gents, yeti you are a very lucky man....
anyways, heres my last dyno print out, as you can see the a/f is a little off and its a bit down on power. it was taken in one of those mobile dyno's with flashing lights on it....
![Image](http://i1143.photobucket.com/albums/n629/bigspanishmarty/IMG-20130327-00256-1.jpg)
![Wink :wink:](./images/smilies/icon_wink.gif)
anyways, heres my last dyno print out, as you can see the a/f is a little off and its a bit down on power. it was taken in one of those mobile dyno's with flashing lights on it....
![Image](http://i1143.photobucket.com/albums/n629/bigspanishmarty/IMG-20130327-00256-1.jpg)
HEY YOU GUYS!!!!!!
Re: Dyno results thread
bigspanishmarty wrote:very interesting gents, yeti you are a very lucky man....![]()
anyways, heres my last dyno print out, as you can see the a/f is a little off and its a bit down on power. it was taken in one of those mobile dyno's with flashing lights on it....
Surely some mistake...
I didn't think you had a heart !
Didn't you get a print out from the Brands run ?
![Laughing :lol:](./images/smilies/icon_lol.gif)
Making up since 2007, sometimes it's true...Honest...
Re: Dyno results thread
cybercarl wrote:Thanks for posting that Mark, it can be seen clearly in the wireframe. Yes the Mori ones have a taper to them whereas the Dr H ones don't. Also the ring doughnut shape at the top differs. The Dr H ones are more rounded so air will behave differently as it gets sucked in. I have a feeling the Dr Honda's would be better for street use.
So for true (ish) copies of the Mori stack then HPower are the only ones.
Very complicated stuff air capacity and airflow, even right down to quantity. Looking at Yeti's airbox and all the bits in there ie ram tubes. I'm wondering if there is the same cubic capacity inside his airbox as a standard airbox, it's just that the air is fed in differently. In theory it seems logical, more air = more fuel, more fuel and air = more power. Maybe notthere must be an optimum amount that can be reached per the size of the combustion space and compression for maximum displacement. But this is getting into Boyle's law and Charles's law territory.
![]()
(:-})
They all have an internal taper of 6 degrees...
Why ask... sometime you just go to do it and find out?
- agentpineapple
- Posts: 15123
- Joined: Sat Mar 26, 2011 9:16 pm
Re: Dyno results thread
Didn't you get a print out from the Brands run ?
[/quote]
to embarrassed to upload the brands dyno.......
![Embarassed :oops:](./images/smilies/icon_redface.gif)
![Laughing :lol:](./images/smilies/icon_lol.gif)
to embarrassed to upload the brands dyno.......
![Embarassed :oops:](./images/smilies/icon_redface.gif)
![Embarassed :oops:](./images/smilies/icon_redface.gif)
![Embarassed :oops:](./images/smilies/icon_redface.gif)
HEY YOU GUYS!!!!!!
Re: Dyno results thread
I'm looking forward to getting my results. I reckon I'll be lucky to get 120 though. I'm worried it might start me down a route of more expense!! lol
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Re: Dyno results thread
very interesting to see the engineering drawings, that puts it into context...........out of interest did you also measure the standard plastic ones so we can see how the length compares?
AMcQ
Re: Dyno results thread
I can do this after Easter if you would like that?AMCQ46 wrote:very interesting to see the engineering drawings, that puts it into context...........out of interest did you also measure the standard plastic ones so we can see how the length compares?
Why ask... sometime you just go to do it and find out?
Re: Dyno results thread
knew a clever fella would be along at some point ,
thanks gl_s_r ,
I thought I had the only set of MORIWAKI velocity stacks
for a storm just kinda knockin around ??
YETI..
thanks gl_s_r ,
![Thumbup :thumbup:](./images/smilies/icon_thumbup.gif)
I thought I had the only set of MORIWAKI velocity stacks
for a storm just kinda knockin around ??
![Eh :eh:](./images/smilies/icon_eh.gif)
YETI..
![Image](http://i1086.photobucket.com/albums/j450/MORIWAKINUTTER/th_CamperVan001.jpg)
- agentpineapple
- Posts: 15123
- Joined: Sat Mar 26, 2011 9:16 pm
Re: Dyno results thread
looks like you have compition yeti.......YETI wrote:knew a clever fella would be along at some point ,
thanks gl_s_r ,![]()
I thought I had the only set of MORIWAKI velocity stacks
for a storm just kinda knockin around ??![]()
YETI..
![Wink :wink:](./images/smilies/icon_wink.gif)
HEY YOU GUYS!!!!!!
Re: Dyno results thread
cc x max rev's / 2 (4 stroke only one being induction, 2 strokes per revolution ) = max capacity of air. then divide by 60 gives you total cc of air change per second in the airbox. I think
Re: Dyno results thread
Nice one edds
so I am on to something then with there being a point where it has a negative effect.
(:-})
![Thumbup :thumbup:](./images/smilies/icon_thumbup.gif)
where the 60 come from. And with the revs would that be where the rev limiter is set a, so already pre-determined by the manufacturer. Maths is not my strong point.then divide by 60
![Sad :(](./images/smilies/icon_sad.gif)
(:-})
==============================Enter the Darkside
Re: Dyno results thread
''then divide by 60 gives you total cc of air change per second in the airbox.cybercarl wrote:Nice one eddsso I am on to something then with there being a point where it has a negative effect.
where the 60 come from. And with the revs would that be where the rev limiter is set a, so already pre-determined by the manufacturer. Maths is not my strong point.then divide by 60![]()
(:-})
Maths ain't my strong point either but there are definitely 60 seconds to a minuet.
![Wink :wink:](./images/smilies/icon_wink.gif)
Making up since 2007, sometimes it's true...Honest...
Re: Dyno results thread
yes pleasegl_s_r wrote:I can do this after Easter if you would like that?AMCQ46 wrote:very interesting to see the engineering drawings, that puts it into context...........out of interest did you also measure the standard plastic ones so we can see how the length compares?
![Thumbup :thumbup:](./images/smilies/icon_thumbup.gif)
AMcQ