As this year seems to be wrapping up early my disgust with all of this has me wondering "how about just one more build" and the thing that comes to mind is a NYPEX (I have 1 of each neither of which seem that they are going to sell). Whos doing the chassis fab? I see some going to an apex chain case so they can get a drop and roll. I like this idea, anyone got some experience that can shed some light on the pros/cons of this. I see in the classifieds theres an apex with a belt drive I REALLY like this. Id like to do this on propane which there was a thread here awhile back and the general concensus was that it would be cool but nobody seemed to know if it could/had been done so Ill be making some calls. Id like to here from a few that have them what their final thoughts are on them. Thanks in advance.
LETS TALK NYPEX
- Thread starter n2otoofast4u
- Start date
They are a lot of work, a lot. Be prepared to find very little info and pics and just start wingin it for install. Depending on what setup you do I think also will determine the amount of time you will have into your. Are you going to turbo, im assuming so. Paul at impulse robably has the most complete kit, or diamond s as well. I built a mcx kit, alot more work but I think I prefer the rear mount setups a bit more than the front. In the end, the apex motor slides in with not to much effort but its the small details that will take you a while to finish. Overall I think im going to really like mine, cant wait to get more seat time on it. It better be worth it or that was a lot of time down the drain, haha. Good luck and have fun and be patient.
I'll chime in here.
I just completed my Nypex and rode it for the first time this weekend. I gotta say I am pretty happy with the sled it flat out rocks. I took an MCX Apex 290 kit and converted it for the Nypex. I'm not sure I'd do that again I think it would be just as fast to start from scratch and use a Boost It controller and build your own turbo kit. If you want the midmount just buy Pauls kit, I wanted a rear mount. MCX has been pretty slow about getting their kits out so maybe for next year but you won't get one this year.
All that said it is a HUGE HUGE job. I built my own tunnel, bars steering, header, intercooler etc etc etc and did every bit of the fab work myself, of which there is a lot, all in it was close to 800 hours. There are NO instructions out there so you are on your own. You need to design and make brackets and stuff at every corner, it just takes a lot of time, just when you think you are making headway something else comes up. Wiring needs to be lengthened, shortened, everything needs to be modded. This is not exactly my first time around the block on custom builds so its not like I don't know what I'm doing, I could build one faster now but I'm not sure I have the energy to do it. If you are thinking propane it'll easily be the same or more work. A pre-made kit and after market tunnel etc would greatly speed things up but it just depends on your budget.
I say go for it but you might want to have another sled around to ride while you are doing it.
As for the sled compared to the Nytro it feels I'd say 5% heavier on the nose on the trail but once its in the deep you don't feel the weight difference. When you look at the Nytro and the Nypex side by side with the clutch covers off you can see the Nypex primary sits higher and further forward in the chassis I guess cause the blocks are different, which when you are riding it you feel ever so slightly. The spinning clutch is a gyroscope and you can feel the difference. That said by the end of my second day I wasn't feeling it anymore so I got used to it fast. My son was riding our MCX Nytro and we swapped back and forth, they are very close but the Nypex pulls WAY harder and the motor winds up so fast. So far I'm really diggin' the sled and I'm glad its done.
Drop and roll. I will never do another drop and roll, I've done 3 and in my experience the benefit you gain in climbing ability is over shadowed by how crappy the sled handles the rest of the time which is the majority of anybodys riding. All Yamis are nose heavy the D&R makes them worse. Its JMO but I wouldn't do it again, I'm learning from my mistakes, LOL.
There's a reason these sleds are selling in the $40,000 range, its cause of the labour.
Here are some pics I posted last week.
http://www.snowestonline.com/forum/showthread.php?t=301663
M5
I just completed my Nypex and rode it for the first time this weekend. I gotta say I am pretty happy with the sled it flat out rocks. I took an MCX Apex 290 kit and converted it for the Nypex. I'm not sure I'd do that again I think it would be just as fast to start from scratch and use a Boost It controller and build your own turbo kit. If you want the midmount just buy Pauls kit, I wanted a rear mount. MCX has been pretty slow about getting their kits out so maybe for next year but you won't get one this year.
All that said it is a HUGE HUGE job. I built my own tunnel, bars steering, header, intercooler etc etc etc and did every bit of the fab work myself, of which there is a lot, all in it was close to 800 hours. There are NO instructions out there so you are on your own. You need to design and make brackets and stuff at every corner, it just takes a lot of time, just when you think you are making headway something else comes up. Wiring needs to be lengthened, shortened, everything needs to be modded. This is not exactly my first time around the block on custom builds so its not like I don't know what I'm doing, I could build one faster now but I'm not sure I have the energy to do it. If you are thinking propane it'll easily be the same or more work. A pre-made kit and after market tunnel etc would greatly speed things up but it just depends on your budget.
I say go for it but you might want to have another sled around to ride while you are doing it.
As for the sled compared to the Nytro it feels I'd say 5% heavier on the nose on the trail but once its in the deep you don't feel the weight difference. When you look at the Nytro and the Nypex side by side with the clutch covers off you can see the Nypex primary sits higher and further forward in the chassis I guess cause the blocks are different, which when you are riding it you feel ever so slightly. The spinning clutch is a gyroscope and you can feel the difference. That said by the end of my second day I wasn't feeling it anymore so I got used to it fast. My son was riding our MCX Nytro and we swapped back and forth, they are very close but the Nypex pulls WAY harder and the motor winds up so fast. So far I'm really diggin' the sled and I'm glad its done.
Drop and roll. I will never do another drop and roll, I've done 3 and in my experience the benefit you gain in climbing ability is over shadowed by how crappy the sled handles the rest of the time which is the majority of anybodys riding. All Yamis are nose heavy the D&R makes them worse. Its JMO but I wouldn't do it again, I'm learning from my mistakes, LOL.
There's a reason these sleds are selling in the $40,000 range, its cause of the labour.
Here are some pics I posted last week.
http://www.snowestonline.com/forum/showthread.php?t=301663
M5
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From my understanding you would only do the NYPEX because you couldn't get the weight of a APEX down to the same as a NYPEX, is that correct? Otherwise you could do bar relocations and mod a apex to be more forward then it is and that would be easier correct?
I'm still trying to grasp what your after when doing a NYPEX although I friggen love the idea and have put some time into figuring out how to build one myself. In the end I'm asking myself aside from the cool factor what are you gaining?
M5 your opinions count big here because your experience. If I wanted nytro handling and apex power I can still get that out of the 3 banger with a good turbo kit. So when you compare a 270hp nytro to a 290hp apex engine to engine is it worth the transplant?
I'm still trying to grasp what your after when doing a NYPEX although I friggen love the idea and have put some time into figuring out how to build one myself. In the end I'm asking myself aside from the cool factor what are you gaining?
M5 your opinions count big here because your experience. If I wanted nytro handling and apex power I can still get that out of the 3 banger with a good turbo kit. So when you compare a 270hp nytro to a 290hp apex engine to engine is it worth the transplant?
Ill second what m5 has said and add to my earlier reply now that im not on my phone. The project is enormous to say the least, it almost seems like once you figure out one fitment issue you run into three or more for the next part, almost never ending. I started my nypex in mid december and just finished last weekend. Im glad I did it, however like mentioned above I probably wont want to do another anytime soon. I think the added headache of making a rear mount work in the nytro chassis was a bit of a pain but will be well worth it in the end. All the hangers were wrong, the motor alignment and exhaust ports were different, the turbo mounting was different, the pre cooler was different, etc etc. I think with a front mount such as the impulse and diamond s where all of that isnt needed will really speed up the process and eliminate a few headaches for sure. Then you will need to deal with the subfame and cooling issues, fitment here is different as the water pump will hit the subfame, the cooler needs to be modded to clear the motor and water lines will need to be altered. There are items out there to eliminate alot of these issues but none of them are cheap, just ask my visa card. I have limited seat time on mine so far, hoping to get it out again this weekend to be able to get a better feel for how it handles and the power difference over the nytro. For me the nytro was fun but just didnt seem to have the pull my old apex's ever had, and i tried multiple kits on my nytros. Hopefully this will be the best of both worlds and be able to have a better mountain chassis and the smooth big power of the apex motor. If anything its worth it just for the sound and having a real tach again!
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First off I just ventured in here out of boredum, anyways, props to you guys on building bada$$ sleds, cool to see what you guys are doing.
Secondly what really is the purpose of the Nypex? I know its an apex motor in a Nytro, but why? I see you did the 290 kit, cant you do 290+ on a nytro motor? I can see if you were planning on 400+ hp you would need an apex motor, are the other benefits of apex motor?
Secondly what really is the purpose of the Nypex? I know its an apex motor in a Nytro, but why? I see you did the 290 kit, cant you do 290+ on a nytro motor? I can see if you were planning on 400+ hp you would need an apex motor, are the other benefits of apex motor?
your questions were answered in the post right above yours
For me it was the chassis. Sure you can probably make the nytro motor run close to the apex, hell I think the nytro spools faster, however you dont get the smoothness the apex motor makes or that sweet sound of a 4 banger. Yeah its probably more cost effective to build up a nytro, but everyone has done that and I wanted something different.
Back to the chassis, I for one dont care for the apex. Im a tall guy and I cant ride it as hard or make it handle as easy as I can a nytro. I do believe the apex chassis is beefier and can take more of a beating but so does my body when im riding it so it was an easy decision to go this route. With the nytro being a taller more rider forward design I feel more at home and in a better position to ride it harder. That being said there is a ton of room for improvement for the nytro chassis as well, its no saint in the mountains by any means but its what we have for now.
Is it for everyone? No, not at all. Is the amount of work worth the outcome, well that is still to be determined but I cant wait to find out.
For the Nytro vs Apex motor debate, I have kinda been talking to Paul at Impulse about doing a built motor. He told me between his fully built stroker Nytro motor and fully built stroker Apex motor side by side there is no comparison. The Nytro at 18psi and Apex at 16psi and he made it sound like the Apex destroys it.
I have no experince with either side by side just going off what Paul said. If I was gonna take anyones advice about the subject I would take his
I have no experince with either side by side just going off what Paul said. If I was gonna take anyones advice about the subject I would take his
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The 2 main reasons I personally like the rear mounts are 1. I think it gives the sled a better balance and feel when riding it. My sleds are built as boondockers, they will climb but thats not my focus so I really try to think about handling when I'm putting a sled together. The second reason is reliability. I've had all three sytle, front, mid and rear and the rear mounts have been the least amount of work to maintain. I will NEVER do another front mount because of the header issue and too much weight on the nose of the sled. I would do and Impulse mid setup again as they are just as bullit proof as the MCX and the weight in the nose issue is dealt with via the fuel tank, on this build it just turned out to be way cheapeer to go the route I did with the MCX kit.
I'm not sure about the "Why" question here at all. Why do any of these things we do, they are all a waste of time and money. I built mine because I wanted to, no more no less. My next project is my 65 Chev step side which will no doubt be a waste of time and money as well, who cares you can't take it with you?
M5
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Hope you didn't take my "why" question the wrong way I was referring to the why rear mount not why a nypex. I understand why a nypex because the apex motor awesome, your logic for a rear mount is very understanding now... I was just curious... Thanks, your sled looks awesome by the way
I completely understand, the very nature of this thread is "lets talk nypex" so I assumed the why would come up. Thanks for the advice, I toyed with this idea since my apex chassis is getting a little beat up and could use a freshen up, but with your skills/tools, and experience still taking you over 800 hours it would be double that for me so I'm trying to decide my next steps is all.
Thanks for the reponses, killer sled now go enjoy it!
Don't misunderstand me here, a guy could easily build one in way less time if you had a complete Nytro chassis just waiting for a motor. I spent quite a bit of time building my chassis. When I started all I had were the two bulkhead halves. I bought , built and assembled every part of the sled which is partly why it took so long. If you purchased say the MCX or Impulse Nypex kit ready to install and had a donor chassis and motor ready to go I'm guessing it would probably be in the 2-300 hour range.
M5
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MRFUSION
Active member
I built one of these bad boys last year and its all in the details to say the least. From routing the cooling system to fitting the wiring harness into the chassis. I have hundreds of hours into mine, I used Scott at Diamond S for his header and front engine plates, he built the tunnel too. I dont think you will ever see 2 Nypexes even close to being the same, the little hand made brackets to the plumbing. Learned lots and cool project but going to run it for a few years. Shad
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BigFish BC
Well-known member
how do you like the ti chassi any issues.do you have the ti subframe too any idea on what it weighs.nice sled by the way.
