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Im getting a dune port by kevin herr, and shoulld have my cylinder back next week sometime.

 

I think my bike wasnt running quite right because some of the reeds dont seem to be sealing properly, that and the lack of compression...

 

 

Two options, buy replacement reed pedals or buy some vforce 3 reeds.

 

Any input will help,

 

Jamie

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VF3 or a Boyesen RAD valve in this application would probably be about the same........... :geek:

 

I know the rad valve I had didn't work with the larger carbs. So I got a set of Boyessen pro carbons and put them on the stock cages. Then I switched to some VF2's.. Honestly I didn't feel any difference.. I think the Higher HP drag bikes benefit more from the VF then the trail/dune motors. So from my experience for dune motors the stock cages with good set of reeds work good.

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I know the rad valve I had didn't work with the larger carbs. So I got a set of Boyessen pro carbons and put them on the stock cages. Then I switched to some VF2's.. Honestly I didn't feel any difference.. I think the Higher HP drag bikes benefit more from the VF then the trail/dune motors. So from my experience for dune motors the stock cages with good set of reeds work good.

Boyesen has a RAD Valve that will work up to 38mm carb I think............. Which is beside the point, that I have had the Boyesen RAD Valves and VF3's on an engine dyno and flow bench. They are pretty much the same performance-wise. There are some petal frequency reponse differences that I thought would be significant in relation to performance, but it doesn't seem to matter........... :geek:

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the rad valves are made more for dirtbikes and single cylinder 2 strokes that have an intake boot that is angled to the left or right. the rad valve is designed to help airflow through that angle. think of a blaster for example. the carb is angles to the side and the airflow through the intake boot makes a sharp turn. since the banshee intake boots are pretty much a straight shot from the carb to the reeds i dont think a rad valve would be worthwhile on a banshee.

 

as supporting evidence, look at pictures of drag bikes. how many do you see running rad valves? almost none. how many do you see running v force reeds? again, not many. a few do. but most drag motors i see are using stock reed cages. i wonder what kind of reeds they use with the stock cages. my guess is some aftermarket reed petals and ported stock cages.

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Boyesen has a RAD Valve that will work up to 38mm carb I think............. Which is beside the point, that I have had the Boyesen RAD Valves and VF3's on an engine dyno and flow bench. They are pretty much the same performance-wise. There are some petal frequency reponse differences that I thought would be significant in relation to performance, but it doesn't seem to matter........... :geek:

 

If i was to go out and purchase a set of either (vf3's or boyesen) which would you prefer/buy?

 

the rad valves are made more for dirtbikes and single cylinder 2 strokes that have an intake boot that is angled to the left or right. the rad valve is designed to help airflow through that angle. think of a blaster for example. the carb is angles to the side and the airflow through the intake boot makes a sharp turn. since the banshee intake boots are pretty much a straight shot from the carb to the reeds i dont think a rad valve would be worthwhile on a banshee.

 

as supporting evidence, look at pictures of drag bikes. how many do you see running rad valves? almost none. how many do you see running v force reeds? again, not many. a few do. but most drag motors i see are using stock reed cages. i wonder what kind of reeds they use with the stock cages. my guess is some aftermarket reed petals and ported stock cages.

 

I would like to know also, i was thinking of buying some vitos replacement reeds. But then again, for 50 bucks, im 1/4 of the way to vf3's and will probably buy them later on anyway...

 

Are there any replacement reeds that are comparable to vf3's or boyesen?

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the rad valves are made more for dirtbikes and single cylinder 2 strokes that have an intake boot that is angled to the left or right. the rad valve is designed to help airflow through that angle. think of a blaster for example. the carb is angles to the side and the airflow through the intake boot makes a sharp turn. since the banshee intake boots are pretty much a straight shot from the carb to the reeds i dont think a rad valve would be worthwhile on a banshee.

 

as supporting evidence, look at pictures of drag bikes. how many do you see running rad valves? almost none. how many do you see running v force reeds? again, not many. a few do. but most drag motors i see are using stock reed cages. i wonder what kind of reeds they use with the stock cages. my guess is some aftermarket reed petals and ported stock cages.

 

Come on..................Have you actually seen a RAD Valve for a Banshee? They're not the same thing as what you are talking about. :thumbsup:

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