Velocity Stacks

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tony.mon
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Re: Velocity Stacks

Post by tony.mon » Wed Jun 20, 2012 10:22 am

lloydiecbr wrote:
darrenmartin wrote::think: Let me throw this one into the melting pot.....how would the bike respond to putting the Short stack in 1st then placing the Long stack into the Short one, its a real tight fit so i dont think there would be any problem as far as the Long stack cuming loose on the run. Just a thought seeing as legnthing the stack seems to give it more oomph!
you wouldnt get both in toooooo long . the long one on its own is very close to the air filter (mm)
You might if you make a spacer by cutting the lower rim off of a spare airbox lid, to effectively raise the lid up 10mm.

Alternatively just make a circular spacer to go underneath the long stack so that it's raised up a few mm from it's normal position. Make sure that the securing screws are long enough to get enough grip, though.
A ring of silicon sealer around the lower edge as it goes into the carb should seal it ok, or you could cut the lower section from another stack and glue it on.
It's not falling off, it's an upgrade opportunity.

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AMCQ46
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Re: Velocity Stacks

Post by AMCQ46 » Wed Jun 20, 2012 10:31 am

if you are going to start cutting & shutting the trumpets, there was someone who tried grafting the better blended shape from am SP1 onto the base for the Stom. by doing this you could achieve the lenght and shape of the exotic billet HRC parts that some of us have fitted. The length effects the pulse resonance, but the bigger and better belmouth shape will flow more air at all speeds.

I though it was Rob who was doing it, but he stopped when he bought the flatslide carbs
AMcQ

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tony.mon
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Re: Velocity Stacks

Post by tony.mon » Wed Jun 20, 2012 10:36 am

It's not falling off, it's an upgrade opportunity.

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darrenmartin
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Re: Velocity Stacks

Post by darrenmartin » Wed Jun 20, 2012 12:30 pm

:eh: Cheap!!!! i picked up a complete air box with both stacks, filtter and oil capture tank for £15 + £6 p&p im sure there are a couple more complete air box's on E-bay still for sale.....
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VTRDark
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Re: Velocity Stacks

Post by VTRDark » Wed Jun 20, 2012 12:59 pm

Your missing the point, that's an SP1 Stack with the wider bellmouth. SP1 parts are a totally different price range. :wink: With the wider rolled over bellmouth (think of the airflow as a reverse fountain), this is more like the more expensive billet ones. So to add this to the top of a storm short stack would would bring it closer to the billet type. :thumbup:

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AMCQ46
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Re: Velocity Stacks

Post by AMCQ46 » Wed Jun 20, 2012 1:04 pm

heres a link to Robs thread about modding the inlets trumpets to make a hybred between Storm and SP1, but he has erased the photos
http://www.haymouth.co.uk/phpBB3/viewto ... 15#p174598
AMcQ

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tony.mon
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Re: Velocity Stacks

Post by tony.mon » Wed Jun 20, 2012 4:41 pm

I think I'll give this a go; just bought a pair of Sp1 stacks for £17.45 posted.
Not too bad....
:thumbup:
It's not falling off, it's an upgrade opportunity.

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VTRDark
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Re: Velocity Stacks

Post by VTRDark » Wed Jun 20, 2012 4:59 pm

A direct comparison (seat of your pants) between the OM long versus what you make and the billet ones would be interesting :thumbup: Though I expect for true comparison it would have to be a dyno, but that costs money. :( You never know it maybe that noticeable seat of you pants style.

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rob...
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Re: Velocity Stacks

Post by rob... » Wed Jun 20, 2012 8:23 pm

AMCQ46 wrote:heres a link to Robs thread about modding the inlets trumpets to make a hybred between Storm and SP1, but he has erased the photos
http://www.haymouth.co.uk/phpBB3/viewto ... 15#p174598
i've still got them in a box somewhere, the photos went when i re-organised my photobucket account.
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darrenmartin
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Re: Velocity Stacks

Post by darrenmartin » Thu Jun 21, 2012 11:04 am

:oops: sorry carl my mistake :roll:
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VTRDark
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Re: Velocity Stacks

Post by VTRDark » Thu Jun 21, 2012 11:42 am

You don't have to apologise mate, we all misread/misunderstand things at times. That's the beauty of the forum with lots of advice, guidance and help from others. It's then up to oneself to interpret it as you think. :lol:

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BigVeeGrin
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Re: Velocity Stacks

Post by BigVeeGrin » Thu Jun 21, 2012 11:59 am

cybercarl wrote:You don't have to apologise mate, we all misread/misunderstand things at times. That's the beauty of the forum with lots of advice, guidance and help from others. It's then up to oneself to interpret it as you think. :lol:

(:-})
add in the wink wink advice and the curved balls lobbed and we all have a jolly time. To avoid a thread hijack I've added two long trumpets to the list of mods.

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lloydie
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Velocity Stacks

Post by lloydie » Thu Jun 21, 2012 12:19 pm

cybercarl wrote:A direct comparison (seat of your pants) between the OM long versus what you make and the billet ones would be interesting :thumbup: Though I expect for true comparison it would have to be a dyno, but that costs money. :( You never know it maybe that noticeable seat of you pants style.

(:-})
I gained 2bhp at the top end when I fitted the billet stacks .
And gained better throttle response at smaller throttle opening .
I did put you a dyno printout on here somewhere

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VTRDark
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Re: Velocity Stacks

Post by VTRDark » Thu Jun 21, 2012 12:50 pm

Yeh mate I've seen all that :thumbup: I'm talking about a comparison with the ones Tony is going to make compared to them and the others. :wink:

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lloydie
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Re: Velocity Stacks

Post by lloydie » Thu Jun 21, 2012 12:54 pm

cybercarl wrote:Yeh mate I've seen all that :thumbup: I'm talking about a comparison with the ones Tony is going to make compared to them and the others. :wink:

(:-})
if you make them the same length as the billet stacks the results should be similar :thumbup:

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