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X-Factory - X7 New 4wd

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Gen 5.1 prototype parts are now complete! Ellis' car was shipped to him in U.K. yesterday, and he should have it late next week. Paul did a fabulous job making this, and begins building his today hoping to finish it by Friday afternoon and run it somewhere this weekend. I'm drooling just looking at the parts -- beautiful. Stay tuned!

xfactory

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Testing good. Car fast, finished both races in good shape. Rain-shortened program, 1 qually and main. In buggy they got 2 qual & main. Paul fastest lap in buggy, both in qual & main. Also F.L. in 4WD qual & main. Both 4WD fast laps 1.4 sec faster than buggy. Dialed!!!!

X Factory R/C

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Dans cette citation, et d'après mes calculs, il manque 7 verbes et au moins 2 sujets pour que cet extrait soit à peu près grammatical - et intelligible.

Par comparaison, le langage SMS des d'jeuns de chez nous redevient limpide.

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dans cette citation, et d'après mes calculs, il manque 7 verbes et au moins 2 sujets pour que cet extrait soit à peu près grammatical - et intelligible.

Par comparaison, le langage sms des d'jeuns de chez nous redevient limpide.

+1

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J'adore tjrs ce genre de publications avec ce style de photos qui n'apprennent et ne montre rien le tout juste pour faire parler de soit....

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mieux?

Rain-shortened program had just 1 qualifier and the main. Paul won the qualy when the other car (Only 2 in class) broke. Paul hit a couple of pipes in the main and finished second. The good news is the car's speed.

Paul set fastest lap in the qualifier and again in the main where he was 2 tenths ahead of the winners' best. The really good news is that the 4WD is much faster than the buggy, just as it should be, and of course Paul's X - 6 Squared is not slow.

Normally a driver's 4WD is 1/2 to 1 second faster than his buggy depending on the track. In buggy they had 2 qualys and the main, and, while he didn't TQ or win, Paul had fastest lap in qualy and also fastest lap in the main. His fast qualy lap with the X - 7 was about a second faster than the buggy lap, and in the main the Hero Lap was 1.4 sec quicker than the buggy.

So the X - 7 is fast out of the box, and we are ready to begin working on the set-up. How fast can it go?

voiture sans carro

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mieux?

voiture sans carro

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PAR-FAIT...

:grin:

Sont fort pour ne rien dire chez X-Factory !

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X FACTORY READY FOR THIS WEEKEND’S RACING

With two big races this weekend, one on each side of the Atlantic, X Factory’s drivers tested their new X – 7 prototype 4WD cars August 6 & 7. For the first time either of these new Gen 5.1 cars had ever run, the tests were successful. Drivers have had no time to work on set-ups, and there were, of course, a few issues with the brand new cars, but the new chassies, drivelines, and suspensions worked very well indeed, making both drivers confident going into major contests this weekend.

Ellis Stafford tested his X – 7 at a club meeting last Sunday at Eden Park Raceway. During the third round of practice, Ellis lapped consistently around 19.8, and had one lap of 19.2. The prototype gear case broke, (Stafford has a new one now) so Ellis switched to his well sorted Kyosho and Tamiya cars. Best lap with the Kyosho: 19.1. Best with the Tamiya: 19.3. Ellis said, “I’m confident now that, with development work, this car will be very fast indeed. Like every X-Car I’ve driven, the 7 seems easy to drive fast. It just wants to go!”

Paul Sinclair tested his X – 7 prototype at a club race on the outdoor clay track at Summit R/C Raceway in Ft. Wayne, Ind. on August 6, and at the indoor facility of EN Hobbies in Columbus, Ohio the next day. “I was very surprised to set fast lap at Summit right out of the box,” said Paul, “and the car was great at EN too. I’m really looking forward to the ROAR Nats now. This is very close to a production car.”

Ellis will have his X – 7 at the last U.K. National Championship race of the season this weekend at Southport, and Paul is now in California for the R.O.A.R. National Championship at NorCal Hobbies. We’ll keep you posted with results.

Chazz Sinclair

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Photos are Paul Sinclair at Summit Raceway August 6. Car has a J Concepts body for the B44, not an X Factory body.

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Here is a video of X Factory Chief Engineer Paul Sinclair’s main event race at the recent R.O.A.R. National Championship event in California. Paul starts and finishes second in this race. He makes several early- and mid-race driving mistakes; at the end, Paul is easily catching the race leader.

“The car was very easy to drive fast, which is one of the main things we want,” said Paul Sinclair following the race. “Between qualifying rounds I added a rear sway bar to gain stability off the straight and on the far side. I was able to pass inside several cars through the right hand corner before the drop off, which felt good. Crashing over the quad while leading the first lap was a dumb mistake, I should have run away with that race! With more track time I would have liked to motor up and add low-speed steering through the switch-back section.”

Chazz added, “Several problems were apparent in video of the first X – 7 prototype from Cactus, and you can see here that the Gen 5.1 car solves most of those problems. Paul is very happy with the platform and will now refine the car for production. Things like strength of parts, ease of assembly and wiring, and so on. Gen 5.1 is a giant step toward the production vehicle – still a few small things to work on, lots of testing to do, but much progress over the summer.”

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YOUNGCHAZZ can you explain a bit more about how out drive friction works.why did Brian Kinwald invent BK bones wouldn't these get rid of all friction.

Easier to have you run a little test than for me to explain.

Rotate the right tire so the CVD drive pin and outdrive slot are vertical. Move the control arm up and down and note to yourself how much pressure it takes - you'll feel the spring's resistance and that's about it. Now hold the wheel still, and put one finger on the spur gear and rotate it a bit so there is tension in the driveline, especially between the outdrive and CVD. Try moving the control arm up and down again -- it should take much more force.

The bones have friction when they move in and out of the outdrives. The real concern here, however, is not so much how the friction affects the car in stasis, but rather the control the friction gives the driver on the track. When on power this friction adds traction and stiffens up the rear suspension. Off power the car will be softer.

Seems obvious; however the degree to which a driver can make use of this around the track really helps lap times. IMHO, Ryan Cavalieri is best in the world at landing jumps. Watch his control as the car approaches the ground. He uses the throttle to get the exact amount of stiffness and forward drive he wants for the landing.

As the outdrive wears, the friction changes, so the car performs differently from one race to the next and you are wondering why. When you see them start to wear, it's time to replace, usually two or three race weekends with the AE steel ones. And, about every other outdrive replacement, be sure to replace at least the pin in the bone, if not the whole bone. The pin is replaceable easily if you have a small press, not so easy with a hammer. Paul buys hardened rods from a hardware supplier and cuts off pieces to fit. The bones are available separately from the whole CVD kit.

Losi's old outdrives (the big ones used on all their cars up to the 22) are a slightly different story. Those outdrives/drive pins are big enough that Losi spent a lot of time trying to reduce the friction there, as too much can make the car 'catch' over bumps. The Losi plastic outdrives obviously have less friction than the steel, and the ultimate reduction of friction was the 'BK Bone', which used small ball bearings over the drive pin to reduce nearly all this friction. With the smaller outdrives/drive pins on the 22, I think Losi has quietly admitted that AE's design is superior in this regard.

http://www.oople.com/forums/showpost.php?p=546706&postcount=53

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X – 7 PROTOTYPE THIRD AT J CONCEPTS CLASH

Paul Sinclair drove the new Gen 5.2 prototype of the X Factory X – 7 4WD car to third place in a very competitive field at the J Concepts Clash. Paul had no practice at all with the new car before the first round of qualifying, and rain shortened the race to just two qualifiers and the main, so this result is quite good indeed for the new car.

Ellis Stafford will begin testing the newest X - 7 before the end of the year. X Factory engineer Paul said, “This car has been in development for some time and every new version is faster than the one before. This latest one has completely solved a reliability issue while keeping the great performance. The belt system is now whisper quiet while delivering ballistic power. The car was excellent over a very bumpy track that was badly affected by the weather and the 1/8 scales. We expect to begin production of this latest model in the spring.”

See a video of the 4WD A main featuring the X – 7 here:

Because the X – 7’s body has not yet been designed, Paul’s prototype car still uses a J Concepts Punisher body for the B-44.

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The version Paul ran at ARCS had two problems that required small design changes, and one issue before production. New cars which, we think solve both problems have been created. Ellis should have received his today and we hope it will be ready for the next U.K. National round at E.P.R. Paul is building his and will run it at the next race he attends. The issue is a minor one of calculations, and that will be easily solved.

We are still shooting for late this fall; if this car solves the problems, we expect to produce this car. If not, we'll keep working. Some other cars have been released directly from the C.A.D. with minimal testing if any. They have had problems...

We will not do that. All our cars are properly tested by the Race Team before you get them. Weak points are already strengthened, the Kit set-up is right, the cars win straight from the box. That's been the case from the beginning, and we won't change now. When you get the X - 7 you will love it!

"There are some things going on in the driveline, engineering principles we have been working with since the very first 'test bed' cars, which make the X - 7 accelerate and run faster, and we don't want people seeing them. We keep getting closer. Ellis and Paul are both assembling their new Gen 6.2 cars as I write, and Ellis will run his in the National at E.P.R.

The 6.2 is, we hope, the last prototype. If it works as we think it will, next up is to produce about 10 of them for Team drivers and work out set-ups, gearing, etc. During that time we also commission a body, and then we're ready to send out R.F.P.s to the Supplier Family."

xfactory

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J ai hate de voir la version finale et surtout: le prix de ce beau joujou!?

Donc il ne faudra pas d autre chassis comme base pour construire ce X7 (comme p. Ex. le B4 pour en faire un X6)??

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Ellis got his together in time for the last practice session at E.P.R. before the National next weekend, and pronounced it "very fast, handles very well, and certainly is better than the 5.2 car I took 3rd with at Robin Hood."

Paul finished building his Friday night, and was slated to go racing Saturday, but woke up sick from allergy problems. He felt a bit better in the late afternoon and took his 6.2 across the street to run a bit in a parking lot. "It's very fast and looks a lot like a production car."

xfactory

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llis got his 6.2 last week, and got a few packs through it on May 27. He took 4th with it at E.P.R. yesterday, and pronounced the 6.2 greatly improved over the 5.1 he has been driving. And that's after taking third at Stotfold with the 5.1!

Paul took his 6.2 to Summit R/C in Ft. Wayne, Indiana on Saturday. It was a club race day and they did not have a 4WD class, but he ran several packs in the 6.2 and also says it's a big improvement, very close to a production car.

Nothing special about the pix, just wanted to show you we continue to work and make progress with this new car. We won't release it until we are sure it's right.

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We keep thinking that every one is final -- wouldn't make it otherwise. And we realize that engineering projects have a way of never being done, that there always can be improvement.

Ellis agrees the 6.2 is a significant improvement over the 5.1 that he has been running. It's very close to production. We moved some components around between the 5.1 and the 6.0, then moved them again in the 6.1, and changed a significant position for the 6.2. The 6.0 and 6.1 are C.A.D. only, they were never made. When we made the 6.2 we spent much time talking about how this car would be produced.

We now think we may have gone slightly too far and may have to come back a touch on one of the moves. We do expect to produce several more of what will be a 6.3 so more Team guys will have them for testing and set-up work. This will be done ASAP (Remember that the router is busily cutting SCX - 60CF stuff. Paul was at the shop until 10:30 tonight.) and we expect this last little bit to do it.

You'll know we think we're there when you see other Team guys with them beside Paul & Ellis.

xfactory

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STAFFORD WINS A-1, FINISHES SECOND WITH X - 7 PROTOTYPE AT OZWESTRY

Stafford showed his X - 7 prototype was competitive indeed in qualifying round four when he finished second, just 0.3 seconds behind TQ Neil Cragg. A-1 racing was as exciting as it gets with the lead swapped several times among the top three qualifiers, Neil Cragg, Lee Martin, and Ellis Stafford. After Martin popped a ball cup, it came down to Cragg's B44.1 and Stafford's X Factory prototype for the last three laps.

A small mistake by Cragg put Stafford in the lead with three laps to go and Cragg right on The Big E's tail. Cragg tried everything to get by, but Stafford drove smooth and steady giving him no room to pass. Getting on the main straight near the end on the last lap, Cragg swung a bit wide, then cut back inside to nose ahead as the two hammered down the sttraight. Stafford kept Cragg inside, and Cragg just touched the track marker on the inside, slowing him down enough to let Ellis back in front.and they crossed the line that way with the X Factory car a half second in front.

In A-2 Stafford was involved in a crash, finishing fifth, and spent most of A-3 in third place right behind the two leaders. The third in A-3, coupled with his A-1 win gave Stafford and X Factory the #2 spot on the podium.

After the race, Stafford commented: "We began more than two years ago with the test bed cars trying out some radical new design ideas, and have been proving them ever since. The car a very good now, and needs just some final set-up work and a body of its own to go into production."

Photo is Stafford's X - 7 prototype in action at Ozwestry

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