solekeeper

woah? someone explain the positives and negatives of this dyno?

INS1GNIA

http://www.dynapackusa.com/

Southways

One of my favourites...

The good:

• Very repeatable
• No variation between cars/days/tyres
• You don't get dirty strapping it down
• There is never any damage to the suspension/exhaust etc from chains/straps
• You get to see what the suspension does under load
• It is easily portable
• Can purchase as 2WD & add more pods later
• Very quiet - no roller whine
• Very safe to use

The bad:

• Until you get used to it, attaching to the vehicle can take a little longer. Once you are experienced, there is little difference - it usually takes ~5 minutes total.
• The software is not as good as Mainline/DynoLog
• The company is small - based in New Zealand ... but good people. Has had some struggles at times
• Support is not great
• Short cars with long doors can be tricky

The DynaPack is great for product & vehicle development. I doubt anything would beat it for consistency of comparative runs.

yellows2k

yeah, hub dynos are fairly common in australia, not as common as the roller dynos, but they were around at least 15 years ago, i remember seeing a r34 nur being hooked up to one back in the day

one thing to note, the hub dynos dont play well with the audi r8 s-tronic gearbox. there is a conflict with the software (of the audi) and it wont change up gears to get a run happening

AMG893

Seen these is Aus a fair bit

solekeeper

that is interesting. sounds catastrophic if a tuner didn't know and ended up strapping an r8 up to it..

350Zed

How is unsprung weight accounted for in the results--e.g., wheel mass?

crazy1eye

They also yield much higher numbers, 430-433whp vs 380-382whp on a mustang dyno for my at the time stock '10 P31 C63

solekeeper

so is it more accurate or not? ^

and speaking of accuracy, which dyno is the most accurate?

dchl21

it dynos higher numbers.. and i used it one time and my second gear was messed up right after. never again.

yellows2k

no, what happens is the car will keep downshifting back to 2 and wont go higher, so it pulls back the revs. it was a weird sensation, but it wouldnt shift up and stay at that gear. there was no issues with damage