Heenan Froude G4 Dyno.....How fast.

[Blue1]

Hi Guys i have just acquired a DPX3 dyno is there any way to upgrade these a little bit, possible to 500 bhp/6000 rpm

[FPV_GTp]

Hi Guys i have just acquired a DPX3 dyno is there any way to upgrade these a little bit, possible to 500 bhp/6000 rpm

DPX3 is a oldie but a goodie , describe what features you or someone prier too you owning it has added to the water brake dynamometer.

Do you have any pictures of the mounting bearing points on the table that it is secured to ???

Heenan and Froude engine Dynamometers have a conservative Hp/RPM rating from the factory and will absorb more horse power and RPM.

There are a few methods of increasing its desired or quoted factory operating levels.

Some involve disassembling the dynamometer head and some just adding on items to the bearing system or even replacing bearings with a great speed rating item and modifying the lubrication system.

Adding mist lubrication system like the later models on the GB4 and the G490EH will aid in higher bearing speed operations, greater RPM.

disassembling the dynamometer head and separating the rotor of the main shaft and adding another keyway into the two parts will help, depending on the shaft diameter maybe increasing keyway size also if material thickness permits. Accomplishing your goals. Only one way to find out experiment.

I know of a guy using a Heenan and Froude G4 series engine dynamometer and taking it to 10,000rpm and and holding 1000Bhp plus on his Heenan and Froude Dynamometer. This G4 series of engine dynamometer is still running today and hasn't missed a beat. It is constantly being used and operating nearly three times the quoted rating the ID tag on the front of the G4 dynamometer specifies. So I see no reason as to why you couldn't make the Heenan and Froude DPX3 engine dynamometer do the same thing.

Remember the ratings on the heenan and froude dynamometers are not 100% duty cycle ratings on the ID tags.

Also these rating are running the dynamometer all day long if one can supply sufficient amount of cool water ( at desired water operating temperature )

Heenan and Froude dynamometers are very robustly made and made to last the ages of time,no toy here.

cheers

[FPV_GTp]

Hello BCJohn,

G4 = dyno series
B = nickel-aluminium-bronze rotor [high speed option]
90 = rotor cropped at 90 degrees for high speed operation

GB490 = Froude's high speed version

This is not always the case, but it is most often:
- Most G4 models control the water entering the coupling
- GB490 controls the water exiting the coupling
- GB490 has no internal pump
- Dyno can be made to work over a wider spectrum with inlet and outlet water control
- When oil misting SMC oil mist system is as good as any
- Bearings with phenolic resin [or similar] open style cages work best
- RHP or SKF or FAG make high speed bearings for this spindle

I know a vendor who makes nick-al-brz rotors for these dynos, these rotors are full blade [pre crop]. They also make spindles.

Swapping rotors is a two fold task, you must achieve the correct "draw" on the taper, before it bottoms. I can't be certain, but it may be only the very high speed spindles that were fitted in this way, I would need to speak to my associate.

If you are going to spin it to 8k RPM, don't stand beside it and make sure you have an RPM limiter that kills the engine on triggering. You better have a real good driveshaft shield that closely restricts exiting driveshaft.
Here I mean, arrange the engine in the cell so that you are in front of the pointy end ie crank balancer.

They are very good dynos and far ahead of those made by DTS, SF etc. They last forever and control beautifully.

Use clean dry air, not from a p_ss pot 5 CFM handy man compressor. If you don't have first class shop air, don't oil mist lube. User timer on the oil mister to turn off an hour or so after shutting down.

Castrol has some good high speed grease that is good for high RPM.

Oh, the bearings can be purchased in C1, C2, C3 clearance, from memory C3 is the go. If you want to try grease you will need to bolt on a thermocouple at the bearing and watch the termperature.

What else can I say?
I can come do it for you
I can do it for you for free

Anyway, that will give you something to think about.

Regards,
vortex

Hi Vortex , who's the vendor (person) that makes the nick-al-brz rotors for the G series Heenan and froude dynos , I have a g series dyno here that I need some components to get her back to life.



cheers

[FPV_GTp]

Hi , since this post hasn't been used by Johnny I have take the initiative to post in here.

I do have a Heenan and Froude ( Froude Consine , Froude Hofmann ) GB490EH dynamometer. This is up on the market ( FOR SALE ) located in Melbourne Australia.

This is the top of the line High Speed G-series Heenan and Froude GB490EH dynamometer in magnificent work order and condition.

It has not be abused or molested in any way shape or form. In its near-pristine condition the day it was shipped out of the Heenan and Froude factory from the UK.

Some specifications on the G490EH Heenan and Froude dynamometer

Heenan & Froude G490EH this dyno is rated at 1500Bhp @ 15000rpm will hold more power this is not 100% duty cycle of the machine.

PM me or email for further details.

Cell phone number 0413 421 190 ( Australia - International call 24/7 )

[FPV_GTp]

Heenan Froude G490EH Engine Dynamometer, still up for grabs this is a Rplls Royce with F1 Ferrari speed engine dynamometers.

Couple up a innovate - ST-12: Engine Data Acquisition System http://www.innovatemotorsports.com/products/st12.php and you have one awesome engine testing facility

ForSale - ( Melb Australia )
mb : 0413 421 190

Heenan&Froude Engine Dyno
1,500 Bhp @ 15,000 rpm

[FPV_GTp]

Here are few photographs

This Heenan and Froude G490EH engine dynamometer is the F1 Ferrari of engine
dynamometers. The dyno has not been miss used in any way shape or form and has not been
alternated from its original condition when it was purchased from Heenan and Froude.

Some of the World Top racing teams in the US use this type of dyno and they are built
to out last you and I.

They are rated at continuous use where the other brands are rate for very short duty
cycle use.

[FPV_GTp]

Add a computerized Depac dyno controller on this machine and you have a world class unit

Mr Ed Pink has this type of dyno http://www.edpink.com/services/testing.htm and I'm lead to belive Mr Bill Pink is still using the machine inhouse workshop.

http://www.depac.com/pics--flics.htm
Checkout the video clip " June 2009 - - Ed Pink Racing Engines 14612 Raymer St., Van Nuys, CA 91405 , DEPAC ADL system on Froude G490. Detailed development of a Toyota TRD Midget engine. Natural Sweep to 9400 RPM. Ed Pink now has his 2nd complete DEPAC-ADL packages on his two Froude G490 dynos. DEPAC #548 and #434

Also checkout Chip Ganassi Racing - Froude G490 Dyno - Dodge Nextel Cup, Concord, NC video clip , Valve controlling Water into the G490. Over 10,000 Pulls with flawless performance , Dyno Operator making multiple pulls on Dodge Nextel Cup engine from 6,000 to 9,700 RPM


Also a F series Heenan and Froude dyno with a Depac system , February 2010 - - Speedway Engine Development, Gasoline Alley, Indianapolis, IN , Complete Upgrade of Froude F-24 dyno. Used primarily to maintain equal performance for 50 Infiniti Q45 engines for the Firestone Indy Lights Series. DEPAC-ADL system will allow precise matching of all 50 Q45 engines to the same complex torque curve for equal on-track performance

[Solid LT1]

My motor guy Bob Wirth has a GH490 with Digilog controller and Depac accquistion (32 channels) that regularly sees over 10,000 RPM in testing. Maybe he can help you out, he has probably forgotten more about dynos than most people know. Email: bobwirth@earthlink.net

Here is a 2.75+HP per cu/in screemer that is on it right now, I could tell you more but then Bob would have to kill me

[FPV_GTp]

LOL " would have to kill me !!! "

Ok keep the engine secret a secret , just post more Heenan and Fround engine dynamometer pictures.

Now explain how you posted the picture so it shows upon opening this thread. Cause my pictures are attachments and one has to click on them when you open this thread to have them show.

Do have a video clip of any engine running on the beautiful G490 H&F dyno. showing the engine and the dyno run not the dyno operator posing for the cameras

cheers

[FPV_GTp]

Here are some pictures (didn't realise the previous pics were too big)

Had to edit size once again maz is, " Max uploads per post: 1 Max file size: 256k
As of now, images taller or wider than 700px will be posted as links. This should keep the forum from being stretched too far right. " by forums rules.

Take three !!!!!

[FPV_GTp]

Ok files have to been even smaller to showup fully

[redsmokin57]

That gauge makes the dyno look about the size of a set of micrometers, I've got model airplane engine to put on the pump, LOL
Cheers Steve

[FPV_GTp]

That gauge makes the dyno look about the size of a set of micrometers, I've got model airplane engine to put on the pump, LOL
Cheers Steve

PMSFL !!!! you can do handstands if you like on the pump as longs as you lash the cash LOL

On a more serious note guys this is a beautiful opportunity to purchase one of the worlds best hydraulic water brake engine dynamometer.

Couple it to the latest electronics and your in business to having a state of the art system as compared to some of the toys produced now days.

Cheers

[af2]

It makes it much easier using a hosting site like photobucket.com to load pics.

[FPV_GTp]

Thank you al2 , will give this a go, my navigation skils on this forum are " no comment "



Just incase my 10th attempt to post a picture fails. Backup plan
A few links to pictures of the Heenan and Froude engine dynamometer, follow the link below to the photobucket album

http://s743.photobucket.com/albums/xx73 ... g&newest=1