135 mph 350x???

[CRAZY70MAN]

http://columbiamo.craigslist.org/rvs/2446549824.html :wondering Man if that is true that fella has balls of steel!!

[Xpress]

Where's my BS meter??

[tommerp]

It's right here, XPRESS..... http://americanpatrol.com/POPUPS/IMAGES/BS-Meter.gif

[HuffieVA]

He's not bullshittin... he just forgot to add "In the back of my buddies Dodge Ram with the windows up, tailgate down and air conditioner turned off" after "Clocked at 135"

[fabiodriven]

C'mon guys. I'm sure he's got that thing borted and ported to the max.

[just ben]

5k invested and 135 mp ,pretty strong claims for a guy who cant afford a camera apperently. notice it says mp and not mph could be 135 mpw (miles per week)

[CRAZY70MAN]

5k invested and 135 mp ,pretty strong claims for a guy who cant afford a camera apperently. notice it says mp and not mph could be 135 mpw (miles per week)

:lol::lol:....I new that would get some good replies........maybe he has a 20 tooth rear sprocket?:lol::lol:

[Swinger]

Im not saying its impossible but 135mph on a three wheeler, hell even a quad would be insane. I get my T3 to 70 and start to get a little weary! I can get more but couldnt immagine going twice as fast! If its true and dude , if you are reading this show me some solid proof and Ill trade you my boat with a jet motor on it. My motor alone is worth 6 grand so bring on the proof and its yours!!!!!!

[dougspcs]

Do they even make tires to fit that machine that are speed rated even close to 100mph?

[tommerp]

Do they even make tires to fit that machine that are speed rated even close to 100mph?

Shore-nuf! *spit* You just spot weld some 78 Camaro rims and tyres on it... There aint nuffin faster then dat!

[HuffieVA]

Man if that is true that fella has balls of steel!!

Well, according to: http://home.earthlink.net/~gellett/atc350x.htm you ONLY have to get her to rev to around 18,500 RPM with stock gearing and 20" tires, I wouldn't say he has balls of steel, but if he got it even remotely close to that I'd say he has balls of shrapnel (which I suppose could technically contain a few bit and pieces of steel) along with a few holes to match the ones in his story...

[thestud25]

I live about two hours away and have debated with myself to go up there and rip this guy to shreds. I emailed him and he told me to mind my business if I wasn't interested in buying it.

[rdlsz24]

I always love this:

"bike needs to be timed no hours on fresh rebuild"

So in fact it doesn't go 135, it doesn't even run right. He obviously doesn't work on engines or he would take the 10 minutes to time it and get it running right. Does that mean it comes with the top end in a box, or somebody timed it wrong and found out the hard way it was off? :wondering

Rob

[R-tifacts]

I think this guy is at the bar every weekend, he's also got a 1000hp camaro running 8's and can wheelie his bike for 12 miles haha we all know these type of guys.

[jensenracing77]

don't take this wrong because the ad is full of BS. i just want to say that 135 MPH may not be that hard to reach on an engine like that (if built right). i had a 350X to 107 MPH. the engine was stock bore and stroke but did have a nice cam, piston, valve springs and exhaust. we were trying to see just how fast we could get it to go with the engine built the way it was. i had 25 inch tires on the back, 14T front sprocket, 37T back sprocket. when we were up to speed the back tires were ballooned so tall they were rubbing the back fenders and almost to the heels of my feet so that made them over 25 inches tall total. the poor 350X ran out of power before we ran out of RPM. if i had the power to run it to its full RPM like a (correctly built big CC 350X engine) i think it would have ran at least another 15 to 20 MPH. i never done the math to see what RPM the engine was running but if someone knows how i would like to know. it didn't sound like it was screaming, maybe 4000 area if i was to guess.

[HuffieVA]

there is a huge difference between 107 and 135, and at 4000 rpm, with 25" tires you would have to be running almost 1:1 / direct drive to get 100mph... I'm just saying I can see 100+ maybe even 125/130 with an RD350 twin smoker, but I just cant envision a mid 80's single cylinder 350cc thumper trike breaking 100mph, at least not without tearing itself to shreds in the process

[jensenracing77]

6th gear on a 350X is overdrive

[HuffieVA]

Yes you are correct:

Transmission 1st gear ratio: 2.750: 1
Transmission 2nd gear ratio: 2.050: 1
Transmission 3rd gear ratio: 1.609: 1
Transmission 4th gear ratio: 1.308: 1
Transmission 5th gear ratio: 1.103: 1
Transmission 6th gear ratio: 0.935: 1

But the Primary Ratio is 2.833: 1

So even though 6'th gear is less than 1:1 the primary ratio changes the actual ratio... and you are nowhere near a true direct drive...
if you were and you made it to 8000rpm you would be topping out at slightly over 200mph, at 200mph I would strongly suggest a full fairing and a visor-less helmet :D

[jensenracing77]

i wasn't thinking about the primary reduction. all i know is with what i had i made it to 107MPH and ran out of power not RPM.

[WilliamJ]

don't take this wrong because the ad is full of BS. i just want to say that 135 MPH may not be that hard to reach on an engine like that (if built right). i had a 350X to 107 MPH. the engine was stock bore and stroke but did have a nice cam, piston, valve springs and exhaust. we were trying to see just how fast we could get it to go with the engine built the way it was. i had 25 inch tires on the back, 14T front sprocket, 37T back sprocket. when we were up to speed the back tires were ballooned so tall they were rubbing the back fenders and almost to the heels of my feet so that made them over 25 inches tall total. the poor 350X ran out of power before we ran out of RPM. if i had the power to run it to its full RPM like a (correctly built big CC 350X engine) i think it would have ran at least another 15 to 20 MPH. i never done the math to see what RPM the engine was running but if someone knows how i would like to know. it didn't sound like it was screaming, maybe 4000 area if i was to guess.

The maths of the gearing are that to get to 100mph with those numbers you would need to spin the motor at between 8000 and 9000 rpm. I don't have 350x primary gear reduction details so I have used 86 250r ones. And as someone has pointed out, standard trike tyres are not meant for high speed

However the basic maths of aero drag are that to get from 107mph to 135mph you need roughly double the horsepower (all other things remaining the same). If your original top speed was 80mph then you need about 5 times the horsepower to get to 135mph!!

I don't know the coefficient of drag of a trike with rider but it is not a slippery shape so, being very optimistic, it could be about 0.8 Cd. Combining that with the frontal area - the head-on silhouette area - of say 9 or 10 square feet at best, you will need 60 or so horsepower at the rear wheels to get to 107mph. The additional 28 mph needs another 60 hp because of the drag resistance increasing by the cube.

I think the drag resistance is probably worse than I have assumed because with 0.8Cd and FA of 9 feet you only need 23 hp at the rear wheels to reach 75mph. I read there's about 36 hp at the flywheel of a 350x (it may be more) and 13 hp would be a big loss through the transmission and tyres.
Bill

[jensenracing77]

have you even been over 100MPH on anything? it is not as bad as you think. i had a couple quads over 100MPH several times also. they are not as bad in the wind as you think. at least not that bad on the ground... in the air the wind will blow you all over the place at a much lower speed:D

[HuffieVA]

have you even been over 100MPH on anything? it is not as bad as you think

Are you seriously asking me if I've ever been over 100?, I suggested a fairing at 200, especially because a 350X (as well as other trikes) has the same inherent aerodynamic qualities of a John Deere B model.... I'm not saying its impossible to get a 350X to do 100, what I am saying is its mathematically/mechanically imposable to do it at 4000 rpm are there quads that do 100? of course but they dont do it at 4grand either...

[jensenracing77]

as i said before, i have no idea how many RPM i was turning. the 4000 was just a guess.

[DRKCYDE]

Maybe its gotta VETC, yo.

[Xpress]

^Or just a VVT-i engine.

[Chazz of Blades]

NAW DAWG! HE DONE PUT ONE O' DEM TRICK PIPES ON DAT THANG! Slick custom exhaust be rockin' the speed.

[Nevkilahonda3]

I'm just throwing this out their maybe hes from europe and maybe he ment KPH k and m are right next to each other now I don't know if a 350x beefed up can do 84mph(135kph = about 83-84 mph) I have never owned one so lets say he clocked it down hill:wondering.What do you guys think.

P.S HuffieVA what kind of dodge were you in that did 135 my pos dodge can only hit 95mph maybe more if my ford is pulling it foward :lol::lol::lol::lol:!!

[Chazz of Blades]

Check for bent axles and forks.






He might have dropped it down a canyon.

[fabiodriven]

All I know is if Jensen said he did 107, he did 107. Man's a straight shooter.

[HuffieVA]

my main argument was the 4grand not the speed, i think we settled it...

[kylegrimes]

How would you keep the front tire on the ground with that kinda power I rode my uncles 250r and the tire would barly stay down in 3rd

[just ben]

How would you keep the front tire on the ground with that kinda power I rode my uncles 250r and the tire would barly stay down in 3rd

have you ever seen the bikes they run on the salt flats? they have to push them to even get them moving on their own. I bet its the same type deal except you have to push it to 130 and down a steep hill

[baycitysteve]

i think all you guys are smokein pot !! i have a 350x built by tc racing engines to 486cc 89mm big bore and a 8mm stroker and there's no way it will go that fast !! i have 15/28 gearing and redlined it will do maybe 105-110 .. trust me i know i'm a four time quad ice racing champ from michigan and was clocked on a half mile track !! wide open all the way around !!!

[DasUberKraut]

i think all you guys are smokein pot !! i have a 350x built by tc racing engines to 486cc 89mm big bore and a 8mm stroker and there's no way it will go that fast !! i have 15/28 gearing and redlined it will do maybe 105-110 .. trust me i know i'm a four time quad ice racing champ from michigan and was clocked on a half mile track !! wide open all the way around !!!

Your balls are bigger than mine could ever hope to be.

[Chazz of Blades]

i think all you guys are smokein pot !! i have a 350x built by tc racing engines to 486cc 89mm big bore and a 8mm stroker and there's no way it will go that fast !! i have 15/28 gearing and redlined it will do maybe 105-110 .. trust me i know i'm a four time quad ice racing champ from michigan and was clocked on a half mile track !! wide open all the way around !!!


If you're being honest: How much extra weight was the trailer?




That carried your ENORMOUS balls behind you.

[jensenracing77]

is that a 350X engine on a quad? also, are you running out of power or RPM first? i am not saying i believe the 135 MPH claim, i just think it is possible to come close with the right setup. Tom it the best in the business, i would love to take your engine for a spin.

[baycitysteve]

is that a 350X engine on a quad? also, are you running out of power or RPM first? i am not saying i believe the 135 MPH claim, i just think it is possible to come close with the right setup. Tom it the best in the business, i would love to take your engine for a spin.

your right he is the very best hands down . i've have a poweroll 430 and a sparks big bore stroker and toms motor is so much faster .. he is very busy and it took a while but it is worth the wait for sure .. i will put my motor up aginst any 350x out there , without nitrous !!! one question though ?? how much does a 350x three wheeler weigh , i know my quad weighs 360 ready to race ??

[baycitysteve]

my ss350x !!!!

[mac #81]

I ran a 350x motor in a 250x frame at the TT nationals in the 90's , the motor was one of Tom Carlsons . 532cc , I was usually one of the front runners in the open pro am and in the 30 plus class no one would be close ! I ran 15/33 gearing with 18" american racers ... that would get me 70 couple mph down the straight at Ashtabula . It wasn't tapped out , but 107 mph ... don't think mine could do that to easily , even with taller gearing !! I quess it wasn't built right .

[baycitysteve]

i had 15/28 gearing with 20inch rear tires and a set of custom made skies in the front out on the bay in bay city michigan next to my buddies artic cat snow machine with a speedo .. i really wish i would of kept them damm skies they really worked sweet !!! i was about 10 ta 15 mph faster with the skies vs the tires !!! oh and i was looking for seventh gear , still felt like i could pull another gear ..

[baycitysteve]

I ran a 350x motor in a 250x frame at the TT nationals in the 90's , the motor was one of Tom Carlsons . 532cc , I was usually one of the front runners in the open pro am and in the 30 plus class no one would be close ! I ran 15/33 gearing with 18" american racers ... that would get me 70 couple mph down the straight at Ashtabula . It wasn't tapped out , but 107 mph ... don't think mine could do that to easily , even with taller gearing !! I quess it wasn't built right .
been there done that !!! awsome place to race tt .. sucked last time i was there i droped a valve and missed the main .. tom felt bad for me and took my motor home with him and fixed for free !! great guy !!

[GeoD]

Ok guys. Here it is. The numbers are in. This is a stock 350X engine with sprocket and tire gearing mods. It can be done!! :w00t:

(At least on paper)



.
132519

[baycitysteve]

i don't think ud be able to get a 21 tooth sprocket to bolt up !!