twin nitro guys

[happybradboating]

I plan on mounting my OS needles after test running my motors on the bench. It seems like fuel flow changes depending on the angle of the needles. This is a post I am printing out so at a later date when I get ready to mount my needles I will a more educated approach to setting it up. Long term I want to get my BV's mounted on my Twin that have been waiting for the boat longer than I want to say out load or in writing. B)

Brad

 

[Don Ferrette]

The ones that are having problem with Bob violets?? Remember DO NOT roll the top purple piece out 360 degrees & then flow the needle.... It only needs about 90 degrees of movement. Dont forget yout can turn the needle out to get the desired flow & keep the operating movement down to about 90 degrees....... This allows the top to stay engaged in the lower half & keep the needle stable. Many of the Homemade needle bases have a different approach to the hole that the fuel passes thru. this is a Super Critical area to maintain smooth fuel flow. ( the angle @ the top of the fuel thru hole is critical)

This is true of ANY needle that has threads. The farther you turn the rotating body off the fixed base the less stable it is. Like Joe says, keep the rotating body as close in as you can and do your initial adjustment only with the actual needle itself. Then once you have your baseline settings, index your remote arm to give you 45 degrees in either direction, far more adjustment range than you should ever need. B)

 

[Buckshot]

Any fuel valve that uses threads will "jump" on the flow meter when the valve is touched.

I agree, what you got to offer, cam valves or something else, Joe is correct BVMs are some of the more consistent hi flow valves out there. Note that a close to the carb needle is not what is necessarily indicated for a big block motor. Go figure.

A work in progress.

B

 

[Joe Warren]

Boom blocks.

Nub

Nub if you are talking boom block needle base? When you cut your rear tube in half to install it? Your sponsons are flapping in the wind like a kite...... rear boon tube very importtant to hold the sponsons when they are striking the water @ high rate of speed. (Front boom tube pratically does nothing) The rear tube sees all....... Torsional twist & high freq vibration. You had a 7 inch contact pad (boat to Tube) if you put rear boom block in Now you have less contact pad & a lot of FLEX........ maybe you can weld the tubes to the boom block needle control? :blink: :lol:

Better yet, get one of Brett's super strong boom tubes...... :lol:

Marty, there's only two of these "Boom valves" that Mr. Doane has manufactured. Nub has one of them. What Joe posted above is pure speculation and you fell for it. Check attached file. If you need these valves for twin , single hydro, mono, tunnel, etc. contact Rick Doane through this board. Mr. Doane will custom build to your need for any kind of needle out there (BVN, OS, CMB, and or Proto Doanes).

No, I was being sarchastic. Joe said that Brett couldn't get his boat set up well with the slightly larger tube. I can't imagine anyone saying that. Maybe he was just being silly..... I spent quite a bit of time talking to the buy who made the tubes and also with Brett about how to set up his sponson spacing.

Joe:

Remember that one of the things that makes this hobby so neat is that people have different ways of getting to a result. I realize that you are VERY happy with your new twin, but there is ALWAYS a better way for almost everything. Look at what Truex and his guys accomplished really quickly!

Get yourself a Twin & SHOW ME SOME RESULTS!!!! its Easy to Stand On the Bank and watch TWINS race @ BE a Critic....... :blink: :lol: My Twin Works Perfect with the Original 5/8 tubes that came with it.....

 

[Piston1]

Any fuel valve that uses threads will "jump" on the flow meter when the valve is touched.

I agree, what you got to offer, cam valves or something else, Joe is correct BVMs are some of the more consistent hi flow valves out there. Note that a close to the carb needle is not what is necessarily indicated for a big block motor. Go figure.

A work in progress.

B

Nice!!!!

 

[thomaselkins]

http://www.specialtymfg.com/needle_valves/094_manifold_cartridge_valve/default.asp

http://www.airtrolinc.com/components/nv30.htm

http://www.clippard.com/store/Default.asp

For those looking for some needles browse these sites

 

[Marty Davis]

http://www.specialtymfg.com/needle_valves/094_manifold_cartridge_valve/default.asp

http://www.airtrolinc.com/components/nv30.htm

http://www.clippard.com/store/Default.asp

For those looking for some needles browse these sites

That middle valve is neat......

 

[Marty Davis]

Boom blocks.

Nub

Nub if you are talking boom block needle base? When you cut your rear tube in half to install it? Your sponsons are flapping in the wind like a kite...... rear boon tube very importtant to hold the sponsons when they are striking the water @ high rate of speed. (Front boom tube pratically does nothing) The rear tube sees all....... Torsional twist & high freq vibration. You had a 7 inch contact pad (boat to Tube) if you put rear boom block in Now you have less contact pad & a lot of FLEX........ maybe you can weld the tubes to the boom block needle control? :blink: :lol:

Better yet, get one of Brett's super strong boom tubes...... :lol:

Marty, there's only two of these "Boom valves" that Mr. Doane has manufactured. Nub has one of them. What Joe posted above is pure speculation and you fell for it. Check attached file. If you need these valves for twin , single hydro, mono, tunnel, etc. contact Rick Doane through this board. Mr. Doane will custom build to your need for any kind of needle out there (BVN, OS, CMB, and or Proto Doanes).

No, I was being sarchastic. Joe said that Brett couldn't get his boat set up well with the slightly larger tube. I can't imagine anyone saying that. Maybe he was just being silly..... I spent quite a bit of time talking to the buy who made the tubes and also with Brett about how to set up his sponson spacing.

Joe:

Remember that one of the things that makes this hobby so neat is that people have different ways of getting to a result. I realize that you are VERY happy with your new twin, but there is ALWAYS a better way for almost everything. Look at what Truex and his guys accomplished really quickly!

Get yourself a Twin & SHOW ME SOME RESULTS!!!! its Easy to Stand On the Bank and watch TWINS race @ BE a Critic....... :blink: :lol: My Twin Works Perfect with the Original 5/8 tubes that came with it.....

You are correct, I like to watch them. Twins are not for me, have had probably 25 of them and I don't like owning them.

I guess I have 2 options: Help someone else set their twin up and see how they measure up with you OR build an F (X) boat and see how I stack up on the course. B)

Maybe the Unlimited would be a good place too.... I wonder if a 67 boat will get the job done?

 

[Joe Warren]

You dont have to like the Twins.. Just manage them & all the BS they can Produce. If NAMBA has changed the rules for Twin 101`s to race in X hydro? I do not know If a Single engine hydro would measure up? In years pass I raced a 67 in F hydro class against Twins & Have Won. But the BIGGER Engines Turn more Diameter & Cup Prop & DESTROY the Water @ the same time. I would hate to try & beat them with a single

 

[JRXHydros]

http://www.specialtymfg.com/needle_valves/094_manifold_cartridge_valve/default.asp

http://www.airtrolinc.com/components/nv30.htm

http://www.clippard.com/store/Default.asp

For those looking for some needles browse these sites

That middle valve is neat......

I have seen Marty Davis single engine HOME BUILT riggers run...seen them in st louis in the 80s...loved that light blue one you had...BAD TO THE BONE!

 

[scott bouchie]

Try balancing your engines,I had air bubbles in my 80 saw boat.best thing I ever did to that boat.

 

[Joe Warren]

Marty, Charleston Call & said They found the tails that got pulled off your Cougars in the Bottom of the lake?? I told them to contact you........ But I dont have your number? :blink:

 

[Marty Davis]

Marty, Charleston Call & said They found the tails that got pulled off your Cougars in the Bottom of the lake?? I told them to contact you........ But I dont have your number? :blink:

Wrong kind of Cougar.... You missed that one!

 

[Joe Warren]

OK if you say so...... I dont think We Missed!