DANG60 0 Posted July 24, 2005 Do any of you guys know what is the norm as regards to transmission losses. On my g60 the difference between the power at the fly wheel to the power at the wheels is nearly 40bhp. Just curious as this seems quite alot. :roll: Quote Share this post Link to post Share on other sites
Dennis.be 0 Posted July 24, 2005 The losses in my transmission is 31bhp, to many I think. I hope that this wil be better with the 16v AGC gearbox is stead of het standard G60 ATB. Quote Share this post Link to post Share on other sites
dr_mat 0 Posted July 24, 2005 Is it? Did you measure it by using an engine dyno, then a wheel dyno and calculating the difference? If not it's an estimate at best .. 30 - 50 bhp is not uncommon .. Quote Share this post Link to post Share on other sites
Chris VR6nos 0 Posted July 24, 2005 The staded losses should be in the region of 13% from what i've read and been told by people like Vince at Stealth, I reference a VR but wouldn't have thought other Marques would be much if any different! Chris Quote Share this post Link to post Share on other sites
StormVR6 0 Posted July 24, 2005 209.5 Bhp at flywheel, 166.5 Bhp at wheels, so a 43 Bhp loss, AFAIK this is completely normal. And to lessen this loss you could spend a shed load of cash for minimal improvement! Quote Share this post Link to post Share on other sites
dr_mat 0 Posted July 24, 2005 Fit smaller wheels ... Quote Share this post Link to post Share on other sites
StormVR6 0 Posted July 24, 2005 Hmm, yes Dr but I think my standard 15" wheels are optimal Quote Share this post Link to post Share on other sites
Chris VR6nos 0 Posted July 24, 2005 The above message from dr_mat may contain IRONY, SARCASM and UNSUBSTANTIATED HEARSAY, you were warned! Chris Quote Share this post Link to post Share on other sites
StormVR6 0 Posted July 24, 2005 :lol: Yes I shouldn't have been so hasty! Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted July 24, 2005 Dr Mat is the resident dyno ex spurt, didn't you know? Quote Share this post Link to post Share on other sites
StormVR6 0 Posted July 24, 2005 Leave it Kev, leave it...... :lol: Quote Share this post Link to post Share on other sites
dr_mat 0 Posted July 24, 2005 "Arguments derive from MY opinions being different to YOURS....how boring the world would be without belligerent people...." Well said. :) I don't like to see people chasing ghosts, that's all. Trying to lower your transmission losses based on a *guess* as to what they are is kinda pointless, imho. Okay, maybe "guess" is overstating the inaccuracy, but it's an empirical system that allows you to infer roughly what the transmission losses are. Sure it may work consistently (I've read the story Vince put up about his faith in his rolling road), but consistency does not automatically mean accuracy. It might be consistently wrong .. Without an engine dyno you'll never really know for sure. You don't have to be an expert to see that this is plainly true. The experts would say their results are "good enough" though, no doubt. No point in arguing about it though.. Quote Share this post Link to post Share on other sites
MattWilde 10 Posted July 24, 2005 can i ask why it's measured in a percentage, how does the amount of power lost throught the transmission change depending on the power of the engine. wouldn't it just drain a certain amount say 40bhp regardless of what power you are running Quote Share this post Link to post Share on other sites
StormVR6 0 Posted July 24, 2005 Yes Dr, I would agree with what you are saying there, and anyway I'm getting slightly peeved with people wanting to know what their Bhp/torque is all the time. If you have stuck a turbo on your car the fact that it kicks butt is proof enough that it has made a difference, by how much in numbers surely doesn't matter? It reminds me of people that are constantly changing the drivers on their graphics cards just to gain a few points on 3DMarks! If it runs all your games smoothly then what fecking difference does a score on some benchtest make?! Quote Share this post Link to post Share on other sites
DANG60 0 Posted July 25, 2005 my figures were from dyno printouts of the car when previous owners have rolling roaded it. Its obviously about rite. woz talking to some one with a ihi ibiza and his car didnt loose as much as mine albeit it will have a different gearbox, it just got me thinking. :D Quote Share this post Link to post Share on other sites
dr_mat 0 Posted July 25, 2005 Keep thinking, got nowt against that, but keep yer wallet in yer pocket ... Rolling roads give you an estimate of transmission losses that's all. Quote Share this post Link to post Share on other sites
StormVR6 0 Posted July 25, 2005 DANG60: Fair enuff mate, and don't take my posts too seriously as I'm joking most of the time, and for some reason I type with a more tempestuous manner compared to when I converse verbally. :lol: Quote Share this post Link to post Share on other sites
