G-Force Engine Development

Welcome

G-Force has been a name in US Motorcycle Roadracing for over two decades.  In these pages, you will read much about our history and our variations. But, in more detail, you will follow our progress in the development of one of our favorite motorcycles.

With this project, we are developing a late 1980's designed Honda NC-30 (VFR400RR).  Over the course of the last 6 years we have created a bike with some of the most state-of-the-art technology inside, and out.  Our performance numbers are reaching those of some of the factory MotoGP teams on a budget of about 1/100 theirs.

The original goal was to get over 90hp at the rear wheel (~200hp/liter) from a 450cc variation of the base motorcycle.  Considering these motorcycles come with less than 60hp stock, that's more than a 50% gain in rear wheel horsepower.  So far, we have reached over 88hp while struggling through many hurdles in product design, quality and base-model engineering limits.  Follow what we have done to overcome these hurdles and move forward - only to find the next hurdle.

With each problem we have encountered, we have had to work with experts in the industry to redesign most of the internal components of our little engines.  The heart of our engines now only bear a small similarity to the original stock components as we have had new pistons, connecting rods and billet crankshafts made.  We are now moving to fit special carburetors and, for one bike, are converting to fully computer-controlled ignition and fuel injection.  We are also experimenting with ways to reduce friction and increase reliability in all parts of the motorcycle.

With these new modifications we have -on paper- figured that we can raise our expectations even higher to reach over 100hp at the rear wheel.  That would be over 220hp/liter.  Not quite the 270+hp/liter region of the MotoGP bikes, but we also don't have the $millions invested.

I would like to personally invite you to watch and share as we try and reach our performance target.  This Blog will be constantly updated and revised as a continuous "Work-in-Progress", so please check back often and be sure to review all of the pages each time for changes or new information.

--Enjoy!

Mike Norman

UPDATE - CHAMPIONS

CONGRATULATIONS 2007 AFM CLASS CHAMPIONS!!!!

Mark Elrod - 2007 AFM 450cc Production Class Champion
At the September 9th, 2007 round of the AFM races at Thunderhill, Mark won the race and earned enough points to mathematically wrap up the championship.  As of that race, Mark can sit out the last 2 races of the season and will still be crowned the 2007 AFM 450cc Production Class Champion.

Today, September 30, 2007, Mark won the AFM 450cc Superbike race, beating long-time track nemesis (friend and teammate) Mike Lohmeyer for the first time.  This promoted Mark to 2nd place overall in that class by one point against the previous 2nd place points-holder.  The fight for that 2nd place Championship spot will go to the last round at Buttonwillow Raceway October 21, 2007.

On a special note, we must thank Bob Simmons for the loan of his G-Force built NC428V Clubman motor to Mark for the past 2 rounds.  Without this loan, this Championship may not have been possible, nor the win today and the chance at 2nd place in 450cc Superbike.

Mike Lohmeyer - 2007 AFM 450cc Superbike Class Champion
As of today's race, Mike Lohmeyer has now earned enough points that he (like Mark) has mathematically wrapped up the championship.  He could sit out the last race and will still be crowned the 2007 AFM 450cc Superbike Class Champion.  Although Mike missed one race due to the Gen 4 crank failure, and finished 2nd place to Mark in an exciting dice from flag to flag today, Mike has dominated every other race this season in true G-Force style.

Top Podium spots locked in for 2007

G-FORCE ENGINE DEVELOPMENT WINS!!!!
2007 AFM 450cc Superbike Championship  -  Mike Lohmeyer
2007 AFM 450cc Superbike 2nd Place Overall  -  Mark Elrod
2007 AFM 450cc Production Cahmpionship  -  Mark Elrod

As reported earlier, Mike Lohmeyer has already won the AFM 450cc Superbike Championship for 2007.  Mark Elrod had also wrapped up the AFM 450cc Production Championship for 2007 as well.  The only thing left for debate at the last race was 2nd place Overall in the AFM 450cc Superbike class. 

Mark Elrod went into the last race of the season in 2nd place by just 1 point.  His adversary, Richard Moore, was leading up until the last race where Mark had won the race against Mike Lohmeyer.  Going to Buttonwillow Raceway, the 2nd place spot was going to be handed to the person who won the race.

Unfortunately, Richard Moore crashed on Saturday practice, having to pack up and go home, so the fight to the end was never to be.  However, Mark Elrod did - once again -win the 450cc Superbike race on Sunday, turning lap times that Richard had not been able to reach the entire weekend before his crash.  It was pretty certain Mark would have beat him outright if the chance were presented him.

Congratulations to Mark Elrod on his AFM450cc Production Championship, you second win in 450cc Superbike, and your second win in that class.  Again, congratulations to Mike Lohmeyer for his 3rd consecutive 450cc Superbike Class Championship.  It was a tough season, but the results show your true racing grit.