rad valve versus v-force

[waxhead]

who here has run the 3 petal system that full spectrum use against the v-force setup
which was better
i was told that the boysen setup make more pwer
what have you found

[tricky1]

back to back test, can't tell any diff. May could see it on a dyno

[waxhead]

ok tahnsk tricky
i wa shoping to hear from your or paul
i knew you guys would have done it

[2nd nature]

whats the price difference?

[steve802cc]

ok tahnsk tricky
i wa shoping to hear from your or paul


I believe Paul has left for TX.
Steve

[Freestyleriverrat]

I know the RAD-valves are better made. While on the subject of valves has anyone gone from stock to the rad or v-force? What kind of difference did you notice?

I think I read somewhere about the rad valves out flowing the m-16's by R&D......I think I'll look around for that thread. Ask the guy from full spectrum.....he has all the technical data b/c he flow tests all his setups and I would imagine that he has done an indepth comparison of the valves.

This is about all I could find. Pretty much subjective comaparisons:
http://www.pwctoday.com/showthread.php?t=37648&highlight=v-force
http://www.pwctoday.com/showthread.php?t=66050&highlight=v-force

[Freestyleriverrat]

Here on with a bench flow. No specs though.:

http://www.pwctoday.com/showthread.php?t=59058&highlight=rad+valves

[SkiDaddy]

A more interesting question for me is how does the RAD valve & V-Force compare to Carbon Tech LT reeds on a stock reed cage. For surf/freestyle use in a freestyle ported engine w/OEM 44s.:sneaky:

[Mile9c1]

whats the price difference?

The V-Force II are about $260 and the Rad valves are around $310.

IMO most people would have a hard time telling the difference between them, but I'd guess the V-Force work slightly better at low RPM's (soft reed setting) and the Rad's flow slightly more.

[#ZERO]

The only three petal system that RAD sells is called the Extreme Velocity Intake Kit and it sells for $584.29 including the intake manifold, carb adapter plate, E.V. Valves and hardware. The normal RAD Valves are only the two petal design and are a bit cheaper.

[tricky1]

http://shop.boyesen.com/catalog/product_info.php?cPath=4_32&products_id=1804

[waxhead]

is it just me
i cant see where they have replacement reeds

[tricky1]

is it just me
i cant see where they have replacement reeds
http://shop.boyesen.com/catalog/product_info.php?cPath=4_52&products_id=1820

[waxhead]

thanks tricky

[SUPERJET-113]

There was a racer guy on Ebay that had some V-force II's for a Superjet that he said had only 2 hours on them. I emailed him and asked him why he was selling them with such low hours, he said he has the Boyeson Rad valve set up with manifold and tried the Vforce II's and said he couldnt tell a power/throttle responce difference. So he decided to keep his Boyeson set up.

[eel]

who here has run the 3 petal system that full spectrum use against the v-force setup
which was better
i was told that the boysen setup make more pwer
what have you found

run the 3 petal rad valve on one cylinder, and the vforce on the other. Remove one plug cap at a time and run @ wot. Use a wet hanky on your forehead as a kiwi speed guage. Cap off vforce end and forehead colder = boyesen faster. or maybe opposite?

Note: Don't change the hanky between runs as this will result in inaccurate readings. Also, if during a run you notice that its suddenly night time, Its not due to the fact that you are travelling faster than the speed of light and are experiencing time dialation, this is because the hanky has fallen over your eyes.

[egbrig]

The vforce design is a version of an old Boyesen design. Boyesen let the patent run out when he improved his valve designs. On a flow bench the Rad out performs the vforce, but when talking of valve design the real question is "what is the valves frequency"? Thats why the new Rads are multi petal.

[crammit442]

I'm running R&D M16's. LOVE them. The reeds they come with suck. Replace them w/the petals Jetworks has made for them and they last forever. Similar to Vforce in design, but longer lasting with the replacement petals. So far they appear to be lasting better than the Full spec/boyeson's w/equal performance. The full spec manifold is a bit nicer than the dominator, though.

Charles

[egbrig]

I admit there is more than one way to skin a cat. If it works then it works. BTW, Boyesen manufacture's the M16 system for R&D.

[Jr.]

here is the basic on these two...............

in the begining, Ed Brazina/full spec, designed the m16 for R&D. when r&d decided to make the parts themselves, Full spec/Boysene built their own version. The performance differance is very slight. with FS/Boy slightly ahead because of Boysene's vast knowlage on reed pedal development.
the big differance is quailty. The FS/Boysene version is heads up better. from castings & o-rings. to overall fit & finish. The m16 still uses gaskets, & the R&D casting quality leaves some to desire. price is very close between the two.
overall, if purchasing new, Full Spec !!! . If purchasing used, you can't go wrong with either one.

hope that helps

[2XLR8]

For the people running the three stage boyesen set up .Have you seen the top reed or is it the middle reed that looses its tension sooner.what I mean is which petal is visibly more open after say 20 hrs of good use?

[egbrig]

Between me and two of my friends we have a total of 5 of the Boyesen Full Spec setups. One of the manifolds is from a SJ limited that has over several seasons on it maybe 100 hrs and just now needs new reeds. Our time with the Boyesen Full Spec manifolds has been nothing but perfect, but there can always be one that doesn't play well with others.

[SkiDaddy]

Anyone have a good link to the Full Spectrum/Boyesen system? I googled it but didn't find anything decent.

[2XLR8]

I was more interested in the life of the reeds than on the life of the manifolds. IF those reeds last 100 hrs and on the bigger carbs thats alot of time.
Thanks for the info.

[michael950]

Anyone have a good link to the Full Spectrum/Boyesen system? I googled it but didn't find anything decent.

Here is a link to the setup I believe was referenced: shop.Boyesen.com (http://shop.boyesen.com/catalog/product_info.php?cPath=4_58&products_id=2118)

[SkiDaddy]

Price = OUCH!:bigeyes:

[scottie mac]

The Boyesen set up on my limited (the one egbrig was talking about) was used and put away wet for three years. when I finally took them off to put ona mod blaster, the reeds still looked perfect. This is with 46mm carbs. That same system on my 6mm stroker went the entire year without a problem. That is four seasons on one set of reeds. I have noticed the edges on the bottom reeds are starting to fray, but after four years, I guess I can't complain.

Scott

[masterblaster]

For the people running the three stage boyesen set up .Have you seen the top reed or is it the middle reed that looses its tension sooner.what I mean is which petal is visibly more open after say 20 hrs of good use?

dragin up a old thread here, I havnet found the same to be true as scottie,I bought his manifold and then bought brand new reed valves for it and the bottom set on the most outside edge are gapping out a ton,not even close to sealing,dont know if they are making the reed diff now or what but its crap.maybe you guys were using the older models back in 05,the new ones have a carbon pedal in the middle that holds up fine,but the outside fglass one is junk in my book

[2XLR8]

Your saying the bottom set of reeds are staying up. I assume you mean the reed that rests on the cage are staying up. Is it worse on the lower side of the cage than the reeds on the top side of the cage. How many hours?

[masterblaster]

the last reed that is on the outside with no reeds supporting it from behind are the ones that are stretched out and staying open bout 16th of a inch. this is only happening on the reeds on the bottom side of the cages. I seriously hope they have something better than these to replace them with,it would make more sense to me to use carbon on the 2 outside edge reeds,rather than just the middle one.
these have hardly any time on them,maybe 20 gallons of fuel,thats about 4 rides at 2 hours each max.

does anyone have any info on the diff with vforce 2s and 3s,I have some vf2s that I can grind the edges down of the plastic and get them to fit in the boyesen manifold

[2XLR8]

That is why I asked that almost 3 years ago. Thats what I saw back then.

[masterblaster]

just came up with a diff fix,I took the reeds off a set of Vforce cages and used them to replace just the outside boyesen reeds,this may work out pretty well,The vforce reeds are much nicer feeling and have lasted much longer on other skis,but the cages are no where near as nice and dont look to flow as good as the boyesen cages,so maybe using the best of both will result in a better over all throttle response.

[masterblaster]

maybe some are made better than others?