West7se Posted May 18, 2009 Share Posted May 18, 2009 Yes another question thread, but as I rudely highjacked the last one, I thought it only right to make this separate. If you read the slower = funner thread you will see how this came about. What we would like is your power to weight ratios expressed in bhp per pound (BHP/LB), if you wish to post your actual bhp (flywheel/ rear wheel) and the overall weight then please do so. Will post mine shortly, need my calc Rich Link to comment Share on other sites More sharing options...
West7se Posted May 18, 2009 Author Share Posted May 18, 2009 (edited) Oh dear, a rather pathetic 11lbs/hp. 550kgs (1210 Lb) 110 bhp at flywheel Edited May 18, 2009 by West7se Link to comment Share on other sites More sharing options...
yellowss7 Posted May 18, 2009 Share Posted May 18, 2009 196 bhp 1164 lbs 5.94 lbs per hp Link to comment Share on other sites More sharing options...
slngsht Posted May 18, 2009 Share Posted May 18, 2009 k, estimate flywheel 480 hp (confirmed dyno @ 385 before last mod - estimated gain since at 40 hp based on others with similar mod). weight measured at 1750 lbs. That works out to 3.64 Link to comment Share on other sites More sharing options...
S1Steve Posted May 18, 2009 Share Posted May 18, 2009 After driving Franken7, I know the S1 is 300hp short !!! Steve Link to comment Share on other sites More sharing options...
Flibbie Posted May 18, 2009 Share Posted May 18, 2009 (edited) Engine is suposed to be 280 at the crank. No idea of rwhp. Weight with full fuel 1560#. Equals 5.57#/hp ? At LOG I was able to get 3 Dyno pulls. 1st was just to ck a/f ratio. 2nd pull showed 230hp. Jim Summerville @ Speedsouth felt my sparkplug gap was too big. We re-gapped to 0.035". On the 3rd pull we got 240 hp @5600 rpm. Max tq was 252. I thought we had a problem because the engine was cutting out @ 5600. I was under the impression my rev limiter was set @ 6500. After calling Dennis @ Stalker this AM I found my limiter is actually set to 5600 rpm. Jim S. thinks at the crank I'm getting about 290 hp. Not too bad for a stock engine advertized @ 240@crank. Only mods are to ECU, headers, air cleaner and no pollution equip. Jim Edited June 2, 2009 by Flibbie Dyno run Link to comment Share on other sites More sharing options...
scannon Posted May 18, 2009 Share Posted May 18, 2009 301 RWHP, so maybe 321 HP at the flywheel. 1,350 lb with half tank of fuel. Using estimated flywheel HP, my car would be 4.2 lb/hp. Using RWHP from the dyno it would be 4.45 lb/hp My car is a WIMP compared to Mazda's Franken7. Link to comment Share on other sites More sharing options...
slngsht Posted May 18, 2009 Share Posted May 18, 2009 301 RWHP, so maybe 321 HP at the flywheel. 1,350 lb with half tank of fuel. Using estimated flywheel HP, my car would be 4.2 lb/hp. Using RWHP from the dyno it would be 4.45 lb/hp My car is a WIMP compared to Mazda's Franken7. I'd love to take one of these boosted cars for a spin (well, not literally) Link to comment Share on other sites More sharing options...
Ian7 Posted May 19, 2009 Share Posted May 19, 2009 to avoid pathetic numbers, I choose metric :-) around 6 kg/Kw Link to comment Share on other sites More sharing options...
Hank Posted May 19, 2009 Share Posted May 19, 2009 BAA HAHAHAHAH Ian. Link to comment Share on other sites More sharing options...
Davemk1 Posted May 19, 2009 Share Posted May 19, 2009 My Birkin is 1240 pounds and 136 whp (figure 150ish at the crank) so that makes for 8.2 lbs/hp. But since the car can't go anywhere without my butt in the seat - the car weighs 1430 with me in it and that makes the real life ratio 9.5lbs/hp. Dave Link to comment Share on other sites More sharing options...
MHKflyer52 Posted May 19, 2009 Share Posted May 19, 2009 1149 lbs no fuel 120 HP but will not run without fuel 9.575 lbs per HP I just tell people its power to weight is about 10 lbs to 1 HP or fast enough to get you a ticket.......About what Franklin 7's Starter produces...... Link to comment Share on other sites More sharing options...
scannon Posted May 19, 2009 Share Posted May 19, 2009 I'd love to take one of these boosted cars for a spin (well, not literally) I'd love to take your car for a ride as well. Someday I will make it to an event and we can try each others cars. Link to comment Share on other sites More sharing options...
gjslutz Posted May 19, 2009 Share Posted May 19, 2009 185 at the wheels & 1220 6.59 RWH / LB Link to comment Share on other sites More sharing options...
Kitcat Posted May 19, 2009 Share Posted May 19, 2009 Car weighs 1225 lbs, 93 hp on the chassis dyno, 13 lbs per pony-but I'll match its sound against anyone's:). Link to comment Share on other sites More sharing options...
West7se Posted May 19, 2009 Author Share Posted May 19, 2009 to avoid pathetic numbers, I choose metric :-) around 6 kg/Kw No different here, its 6.5kw for me. Link to comment Share on other sites More sharing options...
shiva Posted May 19, 2009 Share Posted May 19, 2009 I might be close to skip's number. The car was dyno'ed at 300rwhp (probably 320-330 at the crank) but is kind of fat. the roll cage must weight about 150lbs easy from his 1400lbs base weight. I need to weight it to be sure. But let's say 1550lbs That's 5.1 lbs/ whp or 4.84 lbs / crank hp Still a fun fast car! Link to comment Share on other sites More sharing options...
shiva Posted May 19, 2009 Share Posted May 19, 2009 185 at the wheels & 1220 6.59 RWH / LB Woah! 6.59 RWH / LB... That's one fast 8039.8 horsepower car! Link to comment Share on other sites More sharing options...
slngsht Posted May 19, 2009 Share Posted May 19, 2009 I might be close to skip's number. The car was dyno'ed at 300rwhp (probably 320-330 at the crank) but is kind of fat. the roll cage must weight about 150lbs easy from his 1400lbs base weight. I need to weight it to be sure. But let's say 1550lbs That's 5.1 lbs/ whp or 4.84 lbs / crank hp Still a fun fast car! unless you have a nascar style roll cage, it's not going to be 150 lbs. Link to comment Share on other sites More sharing options...
Spaz Posted May 19, 2009 Share Posted May 19, 2009 Power: 124 HP (90.5 kW) @ 10500 RPM (Ball park 100 hp at the wheels) Weight: 1,200 lbs (ball park with me in it) 12 lbs per HP Link to comment Share on other sites More sharing options...
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