Chassis Dyno V. Roller
Thread Starter
Race Director
Joined: Apr 2005
Posts: 10,179
Likes: 2,306
From: Wesley Chapel, FL Las Vegas, NV
Chassis Dyno V. Roller
Hey you dudes with the high HP set ups.
What are your thoughts on Chassis Dynos. Not considering financial or operational cost.
Just your thoughts as a consumer.
I see the advantage of safety in NOT having to strap the cars down and particularly in high HP cars not spinning on the rollers.
Thanks
What are your thoughts on Chassis Dynos. Not considering financial or operational cost.
Just your thoughts as a consumer.
I see the advantage of safety in NOT having to strap the cars down and particularly in high HP cars not spinning on the rollers.
Thanks
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Hey you dudes with the high HP set ups.
What are your thoughts on Chassis Dynos. Not considering financial or operational cost.
Just your thoughts as a consumer.
I see the advantage of safety in NOT having to strap the cars down and particularly in high HP cars not spinning on the rollers.
Thanks
What are your thoughts on Chassis Dynos. Not considering financial or operational cost.
Just your thoughts as a consumer.
I see the advantage of safety in NOT having to strap the cars down and particularly in high HP cars not spinning on the rollers.
Thanks
I have only made slightly more on a dynojet then registered with a dynapack....never had any problems with spinning the tires on a dynojet either. Just got to strap it down good...might help that I have always had 335 wide tires though.
Team Owner
Joined: Mar 2003
Posts: 96,496
Likes: 82
St. Jude Donor '03 through '17
Trying to understand your question.....chassis dyno's normally spin rollers and require strap down. The only dyno I have been on that didn't require a strap down was a dynapack...which hooks up directly to the hubs and uses a hydraulic brake to apply resistance vs. a dynojet which uses inertia.
I have only made slightly more on a dynojet then registered with a dynapack....never had any problems with spinning the tires on a dynojet either. Just got to strap it down good...might help that I have always had 335 wide tires though.
I have only made slightly more on a dynojet then registered with a dynapack....never had any problems with spinning the tires on a dynojet either. Just got to strap it down good...might help that I have always had 335 wide tires though.
You want to use a load bearing dyno something along the lines of a Mustang dyno.
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
I have seen Dynojet dyno's take in excess of 2000rwhp. The knurled metal on the dyno drum is actually has right around 2.23 times more grip. So if your gonna spin the tires on a dyno, your gonna spin them on the street.
Thread Starter
Race Director
Joined: Apr 2005
Posts: 10,179
Likes: 2,306
From: Wesley Chapel, FL Las Vegas, NV
Seems I wasn't clear in my inquiry.
Dynapack Dynos. I saw it at SEMA
I was asking about you thoughts on the Dynapack Dynos. These are the ones that you take off you wheels and they bolt up with a hub connector.
It's my understanding that Callaway and some other big name shop use them.
Dynapack Dynos. I saw it at SEMA
I was asking about you thoughts on the Dynapack Dynos. These are the ones that you take off you wheels and they bolt up with a hub connector.
It's my understanding that Callaway and some other big name shop use them.
Last edited by Vega$Vette; Nov 5, 2007 at 02:21 PM.
Safety Car
Joined: Dec 2003
Posts: 3,626
Likes: 1
From: Fremont California
I have had my car done on both types of dyno's, a dyno jet and Synergy’s dynopack. I feel the Dyno pack is more accurate. I have had low tire pressure that changed my value on a dyno jet and then the next day took it back to the dynopack and values were the same.
You eliminate the tires (Moving mass) it should be more accurate
Just my .02 cents
Mike
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Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Seems I wasn't clear in my inquiry.
Dynapack Dynos. I saw it at SEMA
I was asking about you thoughts on the Dynapack Dynos. These are the ones that you take off you wheels and they bolt up with a hub connector.
It's my understanding that Callaway and some other big name shop use them.
Dynapack Dynos. I saw it at SEMA
I was asking about you thoughts on the Dynapack Dynos. These are the ones that you take off you wheels and they bolt up with a hub connector.
It's my understanding that Callaway and some other big name shop use them.
Last year was the first time that I had a car tuned using a Dynapack. Like other load dynos where resistance can be added or varied thoughout the entire rpm range to tune. My car made more torque on this dyno (40-50rwtq) then it did on the Dynojet (non eddy current).....but it made a little less hp too (10rwhp). For tuning purposes I am just as impressed at how my car runs (like OEM) out of boost as it does when it is in boost....after being SD tuned using the Dynapack. I am very impressed by it overall as a tuning tool.
On a different thread I saw somebody mention or ask how more tq could be made with the same setup and cubes on one dyno vs another....and somebody responded that it is quite easy. I was able to see this first hand with the Dynapack, as more load was put on the car in the lower rpms and as a result it generated more tq....interesting that the hp was very close considering the tq difference between the two.