twin disscussion

[Rotore]

hehe, since wed, last week ive been sick as hell. going in tomorrow. the trans came out of the tractor and has a horizontal input with 3 speeds and HI/lo

lucky

[BriggsTwins]

the trans or being sick....cuz that no lucky

[Rotore]

The tranny dude

[kazkepox]

it stinks i gotta step off the twin train for a little while :( if I make an offroad kart, thats where the twin could go.

[Rotore]

Sucks that they don't let twins compete over there would of been a sick kart

[kazkepox]

yeah, but still, such a nice frame, no likey the hack saw.

[Kaptain Krunch]

it stinks i gotta step off the twin train for a little while :( if I make an offroad kart, thats where the twin could go.

Technically you were never actually on it :D

[kazkepox]

but I was chasing it frantically trying to get on, grabbed the caboose, then let go....on purpose.

[Rotore]

yeah, but still, such a nice frame, no likey the hack saw.

Build one just like it later on but make it so you can fit a twin on it.

[kazkepox]

yeah ill try to find another one down the road.

[Rotore]

Good thinking we NEED more twins!

[Rickracer]

Naaah, we need more bike motors, ;) :D :D :D

[Rotore]

How about twin bike engines?

[modelengineer]

http://i231.photobucket.com/albums/ee224/jones_pbkt/Sidewinder/NakedEngine1.jpg

How much do all your engines weigh? I'd put mine on the scales but it's attached to the buggy and I don't want to remove it again.

[Kaptain Krunch]

http://i231.photobucket.com/albums/ee224/jones_pbkt/Sidewinder/NakedEngine1.jpg

How about who's got the heaviest engine? (I think I've got this one in the bag, I can hardly lift that one)

Rotor prolly got the heaviest, my kz400 engine is pretty heavy, but my 18 twin is equal if not heavier, so i cant imagine how heavy his 25hp kohler is.

How bout who has the most horses in their twin? i think it would prolly go

Tyler
You
Me
Rotor

[freakboy]

Hey what bout me man!!! i got over 200!!!!

[Rickracer]

I got a single with more than most of your twins, ;):D
How 'bout this twin?
http://static.howstuffworks.com/gif/1974-yamaha-rd350-5.jpg
:)

[Kaptain Krunch]

I got a single with more than most of your twins, ;):D
How 'bout this twin?
http://static.howstuffworks.com/gif/1974-yamaha-rd350-5.jpg
:)

Yea your Rm prolly has more power than my KZ, hopefully once i get a better carb/airfilters i can get a little more power, its 36 horse stock, maybe i can make 38 or so? either way its more than enough.

What kinda power will that RD350 put out?

[modelengineer]

Looks to be either 47hp or 63hp, depending on the year.

[Kaptain Krunch]

Nice, that would rip in a little racing kart frame. I bet it would make even more with some expansion chambers.

[Rotore]

My kohler is 127lbs kaptain i think your engine wins in weight but tyler probably has the most power.

[jr dragster Tyler]

I got a single with more than most of your twins, ;):D
How 'bout this twin?
http://static.howstuffworks.com/gif/1974-yamaha-rd350-5.jpg
:)

*Most* lol. Whats the HP rating on the RM250 motor?

[modelengineer]

Tyler I didn't know you had a twin...

What year is the RM250?

http://www.suzukicycles.org/RM-RMX-series/index.html?RM250-RMX250.shtml~isoraami

My kohler is 127lbs kaptain i think your engine wins in weight but tyler probably has the most power.

I reckon mine is around 60kg, or 130lbs

[Rotore]

You guys with bike engines over 150cc will be heavier then my kohler.

My kohler is heavy because of the flywheel and starter other then that it's a light weight

[jr dragster Tyler]

Tyler I didn't know you had a twin...


Post #228 12th page. Also go into the photo gallery and project log and look at my Arctic Cat sled.

[Rickracer]

My Rm 250 motor is an 84, factory rated 40 hp @ 8000 rpms. It's got a bit more compression, carbon fiber reeds, and a better air intake system, so it's probably at least 42~43 hp, maybe more, and I know it will turn at least 9600 rpms, :D . It's actually a bit lighter than my Honda GX240 (maybe 5 lbs less, both are right in the 50 lb range), but if you add in the radiator, coolant, coil, CDI unit, expansion chamber and silencer, it may be 10 ~15 lbs heavier, still not a porker by any means though, ;) :cool:

[kazkepox]

On topic: I would love to see a two twin kart. like a minisprint maybe, that would be some massive torque.

offtopic: rick, I see your paying alot of attention to this thread, and I got questions for you on mine :D lol. no worries.

[Rickracer]

I just happened to be sitting here at my desk as the email notifications are coming in, ;)

[modelengineer]

Ah yeh, I forgot about the arctic cat for a sec.

[Kaptain Krunch]

You guys with bike engines over 150cc will be heavier then my kohler.

My kohler is heavy because of the flywheel and starter other then that it's a light weight

Naa, a 250 will be lighter than yours, my KZ is prolly in the 120-135 range with oil.

[Rotore]

Naa, a 250 will be lighter than yours, my KZ is prolly in the 120-135 range with oil.

then we are in the same ball park :cheers2:

[Rotore]

since i was searching for aftermarket parts for my twin i stumbled on to this site.

http://www.lakotaracing.com/index.html

[BriggsTwins]

nice site

[Rotore]

Yup hope you guys benefit from it

[freakboy]

wow thanks

[Rotore]

Yup they have a stroker kit for my specific engine that I have my eyes on along with the cheetah cam and 1:61 rockers and alky carb

[freakboy]

Dont bother with alky unless you got orgasims worth of compression

[BriggsTwins]

WAAAAHOOWAA lol

im dying to get my twin into something.....she still needs parts
i still need money
life goes on
rather be paying for parties every friday
!

[Rotore]

True better of forgetting alky carb and getting the heads preppd.

Briggs my parties are free

[Kaptain Krunch]

WAAAAHOOWAA lol

im dying to get my twin into something.....she still needs parts
i still need money
life goes on
rather be paying for parties every friday
!

DUDE your doin it wrong, your not supposed to pay for the parties just go to them!

[Rotore]

Exactly

[freakboy]

Dude if your freinds charge you to party u need new freinds.

[Rotore]

Hell yea should go to the parties I go to you'd never want to leave

[freakboy]

Ive been to some of them lancaster partys mostly the columbia ones there wild i like it over here much more low key. sittin infront of a big assbonfire in a feild and drink we got a couch for feild partys like that lmao its pretty cool sittin around talkin then when we run outa wood to burn into the basement we go to play some beer pong

[Rotore]

Lol that's not really a party that's just chillin dude party is alot of music and grinding up on ya girl and liquor out tha butt

[freakboy]

Ahh you want a party party ok well in the summer when were in the mountains now thats a party. Drinkin and atv riding is pretty fun. oh yeah under age drinkin stuff round here aint to easy so we gotta lay low.

[Rotore]

You guys do I look like I'm in my mid 20's so they don't even bother with me haha

[freakboy]

My bro got served at a bar 4 times so far lmao he looks old enough and u know what we need a random bs thread.

[Rotore]

Yes we do

[freakboy]

well i made one!

[modelengineer]

300th reply on this topic!

[BriggsTwins]

so there~!!!!!

[freakboy]

300th reply on this topic!

And 250 of them posts are horribly off topic!

[anderkart]

I think threads going off topic can keep it interesting. I never knew what kinda wacky topic to expect from you guys when I'd check in on this one, I always thought that was kinda cool.

[freakboy]

Thanks haha we are the kings of offtopic

[kazkepox]

And I'm the pope

[Rotore]

And I'm in with nazi america....

[freakboy]

well better yet i am god!!

[Rotore]

And im related to obama

[freakboy]

kick *** does that mean he wont take my money and leave "change" anymore?

[Rotore]

No :toetap05:

[kazkepox]

I'm back on the train, I gotta get that twin for a future project before he sells it.

[Rotore]

Sells what

[kazkepox]

the twin i kept talking about buying

[Rotore]

darn this thread went down hill haha..

[freakboy]

lol were u been man?

[Rotore]

ive been was moving dude i finally got me own place

[freakboy]

sweet man were u move to? ohhh and i also came up with a new plan for that engine and peerless 820 to be thrown int HEHEHEHE its a secret for now till i get the plans all said and done!

[Rotore]

i got an apartment right by lancaster general lol.

what engine? the horz?

[freakboy]

Lol aint that were u were like a month ago when it was warm? ahahah... but no its the vert..... its the 46 ci i was gona use on my racing mower... now i got a better idea.

[Rotore]

Yea but now I'm out of the inlaws house

[freakboy]

ahh thats a good thing.. inlaws suck

[Rotore]

Yea there was barely no happy time hehe

[freakboy]

Oh god..... lol

[Rotore]

A guy has his needs dude...

[freakboy]

Yeah i know man i know ahaha.......

[BriggsTwins]

like twins....... lol

[Rotore]

Hell no if my girl had a twin I'd be dead one is already a handful two is torture

[freakboy]

lol the other twins... the ones below the chin... but above the belly button lmao

[Rotore]

She has none our kid suckd them down to sizes but atleast she still has her back end

[freakboy]

oh... ****... least u still got the back porch ahaha

[jr dragster Tyler]

Lol, You guys are too funny, Your kid sucked them right to nothing?:surrender:

[freakboy]

lol im guessin they were thirsty....

[freakboy]

oh yeah rotory i know how u can fix that lil problem... bike pump.... or the way i fix my tires starter fluid and a blow torch....

[Rotore]

She went from melons to lemons... But doesn't really matter as long as she can pop my clutch were all good lol

[jr dragster Tyler]

Lmfao...

[Rotore]

Tyler.... Which do you prefer?

[jr dragster Tyler]

Whats that? Twins or back Porches?

[kazkepox]

The Twins!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11!!!!!1one!!!! eleven!!!!!!11!!

[Rotore]

Whats that? Twins or back Porches?

Yes Tyler.... Don't be afraid to answer we won't judge you...

[freakboy]

I gotta go with the fun bags! AHAHA the back porch if thats nice thats a plus.....

[Rotore]

Most white guys go for the "fun bags" anyway I guess I'm alone on the back porch lol

[Rickracer]

Liquor in the front, Poker in the rear, ;):D

[Rotore]

Lmao that's the spirit

[freakboy]

well the back porch is good.. only one problem i dont see em much cause when i am there walking away from me lol...

[Rotore]

i take it you dont know how to be slick and have a good look at it do you? :roflol:


Back on topic for a sec. worked on the kohler some today got the valves in and rockers got torque to spec and got a new oil pump for it i just need to clean the back plate and fix my camara it stop working.

[jr dragster Tyler]

Back porches lol....

[Rotore]

Haha oh yea I'm not alone on this

[Kaptain Krunch]

well the back porch is good.. only one problem i dont see em much cause when i am there walking away from me lol...

HAHA

I could make fun of you for that one, but i wont.

I worked on a twin today too, 440 2 stroke piston port/single carb. Pretty low performance but she dont weigh much and puts out around 50hp. Once i get some fuel line, gas and a rope to use as a recoil i can see if she'll start, shes got killer compression and good spark so i dont see y it wouldnt.

[Rotore]

Single carb?

[modelengineer]

Vid of my twin

http://www.youtube.com/watch?v=w88Sw7T16a8

[Kaptain Krunch]

Single carb?

Yup, shes got a single 34 or 36 mikuni roundslide, i got a pair of 30mm roundslides that i plan on hooking up to it, but one of them has a frozen in idle jet which i cant get out. theres some pics of it here http://www.diygokarts.com/vb/showthread.php?t=6452

[Rotore]

Oh I thought they all came with twin carbs

[jr dragster Tyler]

My twin cyl 440 has dual carbs. Quite a few of those old sleds where single carb.

[Kaptain Krunch]

Its all about what the sled was designed for, this was a fuel friendly trail sled.

I was working on my neighbors yamaha ovation 340 for him, and it was the first time i'd ever looked closely at a yamaha. Those things are pretty well designed, they have a nice duel barrel carb and everything is just fit in there perfectly.

[jr dragster Tyler]

Nothing like a nice twin!:)

http://i284.photobucket.com/albums/ll33/juniordragster123/DSC03836.jpg

http://i284.photobucket.com/albums/ll33/juniordragster123/DSC03835.jpg

[Rotore]

Quick question on cv carbs. Why am I advised to not mess with them?

[Kaptain Krunch]

Maybe its just me, but i've had bad luck. i wouldnt use one unless i had to. Plus those diaphragms aint cheap.

[Rotore]

I can understand the not cheap part I just wanted to know I don't think I can seperate them anyway

[Kaptain Krunch]

From what i hear there a lot harder to tune also. May just be hearsay though.

[BriggsTwins]

PB blaster and let it soak!!! that will break it loose. be careful otherwise your gonna be drilling and retapping that hole

[Rotore]

I got them apart already took me 10mins. Btw what's the slide on it for?

[BriggsTwins]

which slide, the thick round one, or the flat one

[Rotore]

Flat one?

[modelengineer]

I discovered that my twin has only been firing on one cylinder, so the vids really show a 250cc single... It's all good now though.

In the carby the round one is the butterfly, the flat one is a vacuum operated slide. AFAIK it's used instead of an accelerator pump, but instead of injecting more fuel, it stops the throttle being opened really quickly which would cause the engine to run lean.

[Rotore]

So its the slide opens with the vacuum created by the engine and draws it's own fuel instead of using a pump?

I see no point in using it now....

[Kaptain Krunch]

From what i understand its just basically to make the throttle response very even and smooth, you will get better performance from a flatslide or even a roundslide, there just way to complicated IMO, why have a slide, butterfly, AND choke. Mikuni slide carbs just have a slide, they dont even have a choke.

[Rotore]

Oh ok I get where your going with that

[modelengineer]

Mikuni slide carbs just have a slide, they dont even have a choke.

My Mikuni's have a butterfly, a slide, and a choke but the choke is (I think) another fuel jet which opens. It's not another air restrictor.

[Kaptain Krunch]

You must have CV carbs if they have a butterfly and a slide. I'm talking about plain slide carbs, which used a cable operated slide and have no choke, just a fuel enrichment circuit (which is basically another jet like you said that is opened when you pull the choke lever/cable).

[Rotore]

Shoul I keep or remove the govener on the twin?

[BriggsTwins]

keep it, do you really need the rpms? when you can make it work with a governed speed

[Rotore]

I don't think I still have the springs or linkages so yea

[BriggsTwins]

then no worries

[Rotore]

Lmao i'm really about to drop a grand on this engine

[BriggsTwins]

better get it a nice home then

[Rotore]

It's moré of a long term build now

[BriggsTwins]

just like me.... got a welder though, that was my milestone to move on with the build