twin nitro guys

[brett english]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

 

[shadow]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

I use Bob violet needles on my twin as well mine are fixed and I use the third channel. One of the guys at my lake used these same needles free floating as well and chased the needle the whole tiebecause of the vibrations. In my opinion if you use those needles you should mount them and find a way to fix the movement so there's no chance of change of settings due to vibration or clunking against something.

Cliff

 

[Joe Warren]

BOB VIOLET Mixture controls come with a Mounting Bracket. For...... Mounting. B)

 

[Gerald Carijuton]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

Brett if you want to use free floating needles OS makes a really nice big bore remote needle made for the big blocks , when ever i use them i leave them hang on the fuel lines.

And just because a needle come with a mounting bracket dosen't mean you need to use it , don't be a ROBOT and do a little thinking OUT OF THE BOX .

 

[Joe Warren]

Your already running the boat on a 3 channel radio. Why not use that third channel? I throw the plastic mounting brackets away & make some small aluminum brackets the same size. Mount the needle controls & Flow the needles same & install filters in the inlet hoses. You Attend a race that has a Few Twins on Third Channel & You Will Know It......HUGE Advantage just like on your single engine boat....... With the third channel in the Twin you only have to Balance Left/Right!!! You Control Rich/Lean...........

 

[Piston1]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

Good topic,

Air flowing down the needle is not created by vibs. Air is a leak in your system. Check your tanks, I've had a substantial amount of problems with internal boken tanks no matter how well I pad them to isolate vibs. I wish the tank builders would build a more robust tank for the big block engine boats. I've had my share of blown engines due to tank failures with twin engines running at full song.

 

[Gerald Carijuton]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

Good topic,

Air flowing down the needle is not created by vibs. Air is a leak in your system. Check your tanks, I've had a substantial amount of problems with internal boken tanks no matter how well I pad them to isolate vibs. I wish the tank builders would build a more robust tank for the big block engine boats. I've had my share of blown engines due to tank failures with twin engines running at full song.

EXCELLENT POST

 

[brett english]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

Good topic,

Air flowing down the needle is not created by vibs. Air is a leak in your system. Check your tanks, I've had a substantial amount of problems with internal boken tanks no matter how well I pad them to isolate vibs. I wish the tank builders would build a more robust tank for the big block engine boats. I've had my share of blown engines due to tank failures with twin engines running at full song.

Jose my tanks are fine for now and yes i feel you on bad tanks..had pleanty of those,but for now i have no air leaks..just want opinions on solid mounting the needles against the tub..with all that vibration from both motors do u guys think it could create air bubbles in the needles????..and Joe i agree with you about hooking up the 3rd channel needles, but i know myself...i will get greedy and want more speed and lean my motors out...Joe is there any reason why you dont use the purple brackets that

the needles come with??

 

[steve wood]

if you got air bubbles,you got air.vibes are gonna happen,wheather your mounted solid,or floating in the tubing.bv mount is a pos.use aluminum.just m2c

 

[moparbarn]

brett, if you're worried about vibration, mount the needle bracket with servo mount rubbers. if you don't already have air in the fuel system, vibration WILL NOT create any.......i'll betcha a dime to a dollar joe is being sure he eliminates any possible flex in the stock plastic mount. it's not really plastic, some sort of nylon, & it does flex, although i don't believe the force it takes to rotate the needle will flex the bracket. just another way to eliminate possible issues B) .

 

[Gerald Carijuton]

When mounting a 3rd channel needle always mount it solid (alum/carbin) the problem with the plastic mounts is they can viberate and that will move the needle assy. and change your needle while running , it dosen't take much to if you on the edge already.

 

[Piston1]

if you got air bubbles,you got air.vibes are gonna happen,wheather your mounted solid,or floating in the tubing.bv mount is a pos.use aluminum.just m2c

Steve thats exactly what I was trying to say. Vibs might could cause some flow instabilities, but air is air and it is indication of leakage.

 

[Piston1]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

Good topic,

Air flowing down the needle is not created by vibs. Air is a leak in your system. Check your tanks, I've had a substantial amount of problems with internal boken tanks no matter how well I pad them to isolate vibs. I wish the tank builders would build a more robust tank for the big block engine boats. I've had my share of blown engines due to tank failures with twin engines running at full song.

Jose my tanks are fine for now and yes i feel you on bad tanks..had pleanty of those,but for now i have no air leaks..just want opinions on solid mounting the needles against the tub..with all that vibration from both motors do u guys think it could create air bubbles in the needles????..and Joe i agree with you about hooking up the 3rd channel needles, but i know myself...i will get greedy and want more speed and lean my motors out...Joe is there any reason why you dont use the purple brackets that

the needles come with??

Brett, Ive always mounted them solid.

 

[julianconde]

Brett I have them free floating on my twin and I never had a problem. There's going to be vibration regardless what you do. To me it don't matter unless their a scientist and prove me different that's the way I'll go. Tom foley Has them the same way also

Julian

 

[Joe Warren]

If you have bubbles before the needle you have a Tank Problem. If the bubbles are after the needle you have a Leaky Needle (seals). Or you are running a heavy linkage arm that is not supported by a servo box seal. (707 type is best) this is true on any boat set up....... You want to hold onto the Third channel arm gently!!!!! While we are talking needles... You would be better off to install large pressure fittings in the pipes. 10/32 size fittings. The Tiny ones you get with the pipe have a hard time keeping the tanks Aired up & maintaining Consistent pressures with the BIG BLOCK Engines & large size tanks 25-32 oz...... This is especially ture if you run 5/32 tubing in the tanks?

 

[dwilfong]

I know it's not a TWIN but on my 90 SGX the BV mounting bracket and the control arm both broke. Made the arm out of alum and the bracket. The arm dose not break any more but the mount breaks all the time.

Trying to come up with a mounting system that will not break.

Don't know why every thing keeps breaking. Might need to address the motor mount set up also.

Lots of vibes with a big RS.

Have also checked the BV needle with a BM meter and it dose not seam to hold a constant reading moving it around with my fingers.

Can imagine what it is doing as it is running .

David

 

[Nitro]

Boom blocks.

Nub

 

[dr gary turner]

We have tried just about every needle, BV, Kalistrov, etc. We are using OS Max remote needles in blocks Mark made and are mounted to the center rail of our twins. There is no fluctuation in flow when wiggling the needle. Also use heavier stainless steel pushrods with ball links so that there is no slop in the linage. We use one servo, push pull. We tried a system using a 4 channel radio with a servo on each needle connected to a christy mixer. We could make one needle lean and one rich and then adjust both at the same time moving both at the same time rich or lean. It worked well,BUT during a race there is TOO much going on and you could not hear well enough to make the correct adjustments..

During a race we generally make vary few adjustments. To me the main benefit of adjustable remote needles is testing and getting the needle set and then flowed. Doc

 

[ALLAN YUEN]

i need some feedback on what people feel about mounting the needles on a twin rigger..do you guys think if they are mounted to the tub will the vibration of the 2 motors create air bubbles in the needles?? or is it better to leave them free floating supported by the fuel lines?? what are most of you guys doing?? im now using the bob violet needles but they are free floating(not using 3rd channel mixture arms)..So whats the best way for twins?? and why?

Can you show pictures of your RR Twin's Tanks ? I think that your problem tanks touch fusion tub , cowling or booms so cause viberator and make airbubble tubes.

I love my CMDI 3rd remote values on right side tub for my Cobra Twin and O.S 3rd remote with Don F base needles on right side tub for my Jagaur III Twin. I don't like purple 3rd BVM needle and black CMB 3 remote needle because sometime stuck move and servo will burn out or broken gears

 

[dwilfong]

We have tried just about every needle, BV, Kalistrov, etc. We are using OS Max remote needles in blocks Mark made and are mounted to the center rail of our twins. There is no fluctuation in flow when wiggling the needle. Also use heavier stainless steel pushrods with ball links so that there is no slop in the linage. We use one servo, push pull. We tried a system using a 4 channel radio with a servo on each needle connected to a christy mixer. We could make one needle lean and one rich and then adjust both at the same time moving both at the same time rich or lean. It worked well,BUT during a race there is TOO much going on and you could not hear well enough to make the correct adjustments..

During a race we generally make vary few adjustments. To me the main benefit of adjustable remote needles is testing and getting the needle set and then flowed. Doc

Very much interested in a new needle setup. What is the number of the needle and can theses bases be purchased.

David