ElectroTech Steve Wheeler Infallible Moderator Location: Fork Lake, Alberta Join Date: 06/09/2015 Age: Midlife Crisis Posts: 336 Rally Car: 1992 Golf |
1.zero liter 3 holes, eeeeeeeekogoosed Power means nothing if you cannot control it! |
Aaron Luptak Aaron Luptak Junior Moderator Location: SLC Join Date: 02/15/2008 Age: Midlife Crisis Posts: 776 Rally Car: Civic... |
The "old" 1.6 n/a R2 lists 7500 rpm in its old sales documents: http://whm14.louhi.net/~fiestar2/wp-content/uploads/2014/01/R2_Sales_Document.pdf The new 1.0 turbo R2 lists 6500: http://www.m-sport.co.uk/motorsport/rallying/m-sport-the-cars/fiesta-r2-details/technical-specification No idea if they homologated new ratios for the 1.0t - the ones I listed have a 2009 date on them, so I assume they're for the old car. KF7RWG http://www.utahrallygroup.com |
john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Who da fug was talking about those things..Fuck me, mang... Subject was dis dood with his turbo whatever Honda whaddnit? John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
Thomas Kimsey Thomas Kimsey Infallible Moderator Location: Rochester, New Hampshire Join Date: 10/05/2013 Age: Settling Down Posts: 271 Rally Car: 1988 XRatty |
R2 is a 1.0L 3 cyl. They say it makes max power at 6,500. Can't find anything yet about max RPM. |
Erik Christiansen Erik Christiansen Elite Moderator Location: Culver City, CA Join Date: 05/16/2008 Age: Possibly Wise Posts: 73 Rally Car: VW GTI |
Ah, you are using circumference = pi * diameter in your calculations. But a tire will deform due to the weight of the car, and therefore the "rolling circumference" will be less than the actual circumference of the tire. Some manufacturers publish data for the rolling circumference (sometimes as "revolutions per mile" ). See if you can find that info for the tires you are running. For example, here is the data for Pirelli (page 9): https://www.pirelli.com/mediaObject/pirellityre/fr/fr/catalogue/motorsport/pirelli_ms_rally_catalogue/original/pirelli_ms_rally_catalogue.pdf Keep in mind Pirellis run big! A Pirelli 175/70R15 is much bigger than a DMack 175/70R15, both in width and diameter. So the rolling circumference dimensions in the link are only good for Pirelli tires. This means your calculations may overestimate your top speed by a few mph. I would probably still stick with option #1 though. Is there a final drive option that falls between the ones you have listed? |
Aaron Luptak Aaron Luptak Junior Moderator Location: SLC Join Date: 02/15/2008 Age: Midlife Crisis Posts: 776 Rally Car: Civic... |
It should probably be pointed out that they only started homologating the 1l turbo R2 cars last year, but the 1.6 n/a R2 cars have been around since before 2010 - so saying "R2 is X" or "R2 is Y" is bound to be, at best, a generalization. My bad for forgetting that Andrew's Honda is being force-fed. The 1.6 N/A Fiesta R2 ratios are the only R2 ratios I've been able to find online. I thought the Group N Fiesta ST whose ratios I posted was turbocharged, but digging some more it looks like that was a 2L n/a car. KF7RWG http://www.utahrallygroup.com |
ElectroTech Steve Wheeler Infallible Moderator Location: Fork Lake, Alberta Join Date: 06/09/2015 Age: Midlife Crisis Posts: 336 Rally Car: 1992 Golf |
Dat dood was the dood who aksed. As in he was asking about the hot new model on the block. Power means nothing if you cannot control it! |
ElectroTech Steve Wheeler Infallible Moderator Location: Fork Lake, Alberta Join Date: 06/09/2015 Age: Midlife Crisis Posts: 336 Rally Car: 1992 Golf |
Direct from M-Sport Ratios as delivered to US soil R2 1.0l Turbo 3cyl Fiesta. The dyno plot falls off very sharp after 6500 due to turbo sizing and is unlikely to attain the 124mph top speed.
Power means nothing if you cannot control it! |
john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Been thinking..Yeah dangerous i know so I try not to too much.. But all this yakity-yak has all been about ratios suitable for n.a.motors with peakier power delivery. Shouldn't the Oh Pea with a turbo car be looking more at ratios known to work with turbo motors in rally use? Seems logical to me..Broader spread and moar torques means no need for tight steps and short final drive that a little wheezy n.a. motor makes. Yes? Maybe look at the best 4wd turbo car, which is of course the Misterbitchy Evo 4-5-6-7-8??? John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
ElectroTech Steve Wheeler Infallible Moderator Location: Fork Lake, Alberta Join Date: 06/09/2015 Age: Midlife Crisis Posts: 336 Rally Car: 1992 Golf |
The post above is a turbo car making around the same HP as the OP, a turbo Honda doesn't make the broad power that the Mitsubishi does. Power means nothing if you cannot control it! |
john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Oh I think it makes more ft/lbs than a 1,0... But we don't know...lots of talk but nearly zero information on peak torque at ????rpm and peak HP @????rpm or the curve it delivers. John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
ElectroTech Steve Wheeler Infallible Moderator Location: Fork Lake, Alberta Join Date: 06/09/2015 Age: Midlife Crisis Posts: 336 Rally Car: 1992 Golf |
These guys are quite forthright when they misinterpret a technical query for a sales opportunity... Power means nothing if you cannot control it! |
urr Andrew Sutherland Elite Moderator Location: Studio City CA / Camas WA Join Date: 02/22/2008 Age: Midlife Crisis Posts: 275 Rally Car: Subaru, EVO, Honda, Husky |
|
Snidewhips Jeremy Livingston Senior Moderator Location: Edmonton Alberta Canuckistan Join Date: 05/23/2013 Posts: 277 Rally Car: 1990 acura integra, 2010 Hyundai Genesis Coupe |
how much horsiuss and tqs that thing put down. my stock 4.4 with stock ls (1991) gear box was great all weekend, don't think this biyatch has the ponies to weld or diff it wothout burning clutches and causing mechanicals.
the ratio you're running is b16cable ish with kaaz which i've heard is good. All bridges burnt, island life is beauty |
urr Andrew Sutherland Elite Moderator Location: Studio City CA / Camas WA Join Date: 02/22/2008 Age: Midlife Crisis Posts: 275 Rally Car: Subaru, EVO, Honda, Husky |
|