The Road to Drag Week 2014 - June 29

[sumfoo1]

Are you sure that Ac makes it all the way to the motor?

Usually on (old) variable speed equipment there is a rectifier that converts ac-dc and then  runs a dc motor with a variable voltage (pot).

It would be dumb to put a true AC motor on brushes as the power cycles for you and there is no way to make the motor run at some frequency other then 60hz without having a Variable Frequency Drive. It exists and known as Polyphase wound rotor that allows you to adjust the slip angle of the motor... but again its expensive and they wear out and don't offer much additional utility.

Why would you intentionally run consumables on a motor that doesn't need them?  It commutates it's self.

[Joe-JDC]

Vacuum cleaner motors use brushes.  Joe-JDC.

[drdano]

Jay, grab the hose off the Kirby in the house, the neighbors hose off their ElectroLux, connect it all up and put the vac out in the driveway.  Suck away, make power and watch the shop vac burn all in the name of FE POWER!   

[cjshaker]

Shop Vac motors are AC. Only DC motors use brushes, so there should not be any sparking or arcing in a shop vac. Still don't think I'd want to run explosive fumes through it like gas, methane etc, but oil fumes should not cause much concern. Wouldn't hurt to use some sort of filter though to catch the oil.

I have a shop-vac, radial arm saw, chop saw, grinders, drills and an assortment more AC 110 volt electric motors that say otherwise on AC current and brushes.

Josh

You're absolutely right. I spoke before I thought. I was thinking about alternators and such. My bad.

[runthatjunk]

because I've done just that lol.  anybody that's a service tech if you use that canned air don't use the vacuum at the same time in a moderately enclosed space on a machine to keep the dust from getting everywhere.  its a very loud pop and hard on the vacuum!  luckily I was at the shop rather than customer site.

[cdmbill2]

Nothing to add on external vacuum devices, but engine sealing is obviously key to making a dry sump or a wide vac work. We used a smoke tester on mine to find the leaks. The newer Cometic valce cover gaskets were a real improvement on mine. I don't know if they have a P/N for the SOHC, but they'll make just about anything.

I have also had good experince with the Accufab TB's. As you'll recall I run two on the tunnel ram on the 598". At 2200 cfm each all the carb guys lose their minds but they work great, idle and part throttle well, never mind WOT and you know the power we made back in 2011. More to come here shortly (fingers crossed). They are also far and away the shortest which helps with packaging and scoop height. A 16 x 3.5" filter showed a slight improvement on the dyno over open so I run the filter all the time. K&N for the road and a Nascar spec WIX at the track. Roush Yates has special prices on them from time to time, very inexpensive. I just squeeze them into an oval shape on top of the TB pan/isolator plate.

[jayb]

Thanks for the input Bill.  I have two Wilson dominator throttle bodies on the high riser in my Mach 1 and I'm going to steal them for the test this weekend, but if they show some improvement over the 90mm throttle bodies, or even if they are the same, I'm going to pick up two of the Accufab units like yours.  I like the low height, which is lower than the Wilsons I've got...

[482supersnake]

I have a Scorpion 2000cfm throttle body for the 482 that I am building. One of the big selling points was how low profile it is. It was also a decent price. It uses a 4150 bolt pattern with big throttle blades. Scott

http://www.dragzine.com/news/scorpion-racing-products%E2%80%99-non-stick-throttle-bodies/

[cdmbill2]

Interesting TB. The top mount lever makes the air cleaner/filter question interesting.

It will be interesting to see what happens with the other two TB's Jay. Any time to whip up a more symmetrical top for the tunnel ram?

[jayb]

Actually my sheet metal intake is kind of split in half right at the runners, so I'm making a whole new top part, which won't have the slant in it like the current design does.  Much more conventional.  We'll see what happens...

[My427stang]

Nothing to add on external vacuum devices, but engine sealing is obviously key to making a dry sump or a wide vac work. We used a smoke tester on mine to find the leaks. The newer Cometic valce cover gaskets were a real improvement on mine. I don't know if they have a P/N for the SOHC, but they'll make just about anything.

I have also had good experince with the Accufab TB's. As you'll recall I run two on the tunnel ram on the 598". At 2200 cfm each all the carb guys lose their minds but they work great, idle and part throttle well, never mind WOT and you know the power we made back in 2011. More to come here shortly (fingers crossed). They are also far and away the shortest which helps with packaging and scoop height. A 16 x 3.5" filter showed a slight improvement on the dyno over open so I run the filter all the time. K&N for the road and a Nascar spec WIX at the track. Roush Yates has special prices on them from time to time, very inexpensive. I just squeeze them into an oval shape on top of the TB pan/isolator plate.

I'll tell you Bill that car has come a long way since I saw you at Knotts in the early 2000s.  Love it!

[Qikbbstang]

personally I'd be surprised IF the K&N filtered as well as even a asphalt race grade Wix with their T66 media. The T88 media is dirt track grade.  Would be interesting to install a accurate gauge to measure vac inside the filter housing to see how the filters perform at WOT max load. Looks like Wix does not make T88 paper media filters in your 16x3.5 size. You should at least look if holes in the media when held in front of light are visible to the naked eye as they are with the K&Ns. K&Ns use cotton gauze a large dia fiber and can't utilize as many pleats (surface area) as a paper filters.

http://www.ebay.com/itm/ALL26029-Air-Filter-Element-16-in-x-3-1-2-in-Paper-Each-/360976759316?pt=Race_Car_Parts&hash=item540be43a14&vxp=mtr

[Qikbbstang]

Jay keep in mind with all that fab work you are doing - you need to fit a filter on for street driving and at least wire cloth to keep buzzards out of the motor on the track.  Can you use a small restrictive filter for street driving since it's obvious you don't require much power on the street?
LOL Ive got some surplus combustion turbine intake pleated panel filters but they'd likely be a bit bulky to fit in a car w/o planning. WAG 2ftx2ftx2inch 

[jayb]

That's right, BB, a restrictive filter on the street is no issue for me, and I have that contingency covered - Jay

[Qikbbstang]

a can, container, drum tank etc is something to use caution on. I'll admit that I'm out of my league on the volatility of fumes from different petroleum products but to me no one in their right mind should weld, use a cutting torch, grind or saw on an old fuel oil storage tank and likewise engine oil fumes can't be much be much different then fuel oil.  I do believe the lighter petroleum fumes may be more explosive and anytime you start pulling a vacuum on a mixture of petroleum products the lighter products are liberated first. Is a tank filled with gasolene fumes any different then a tank filled with oil fumes I don't know?  ............


Re: "I'd want to run explosive fumes through it like gas, methane etc, but oil fumes should not cause much concern."