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32
MXU / Re: Secondary spring change- MXU500
« on: January 22, 2008, 01:47:13 PM »
Did not get to do any carb adjusts this weekend like I hoped. We are conviced though that the needle jet needs adjusted (move the clip). It definitly is running rich. The Main is still up in the air . The guy who ordered it was out of town a dwe couldn't find it anywhere.
We are first going to move the clip on the nedle and see how it runs on the low end after we lean it a bit.....then we will put the 148 main and see how she does overall.
Yeah.....I still want to try the white spring...just need to get a spring compressor when I tackle it...(Used 20 tie wraps to keep the orange spring compressed long enough to get the nut back on...
)
We are first going to move the clip on the nedle and see how it runs on the low end after we lean it a bit.....then we will put the 148 main and see how she does overall.
Yeah.....I still want to try the white spring...just need to get a spring compressor when I tackle it...(Used 20 tie wraps to keep the orange spring compressed long enough to get the nut back on...
)
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MXU / Re: Secondary spring change- MXU500
« on: January 22, 2008, 02:41:31 AM »
Well...I put the Orange spring in today. My first impressions is that I am going to be satisfied with it overall.
I haven't rode enough yet to really know. It was not a drastic change. The white spring I would probably really noticed on my trails at home, but I am afraid it would have been too stiff on the open long loops and trails at some of the parks I ride...the orange has a little more gear down ( I can tell the secondary is cloing up a little faster) but not drastic.
I think the orange is the right comprimise but I am not firm on it yet...I still have the white spring I can put in after I get more riding time with the orange.
The orange spring at first, did not seem much stiffer than stock. When I took the stock out, I compared it to the new springs. The white was obviously stiffer than stock, but the orange was only stiffer when you compressed it down a bit. I decided to put in the orange since I was running out of time...I'll go with it for awhile and report back with more data.
I haven't rode enough yet to really know. It was not a drastic change. The white spring I would probably really noticed on my trails at home, but I am afraid it would have been too stiff on the open long loops and trails at some of the parks I ride...the orange has a little more gear down ( I can tell the secondary is cloing up a little faster) but not drastic.
I think the orange is the right comprimise but I am not firm on it yet...I still have the white spring I can put in after I get more riding time with the orange.
The orange spring at first, did not seem much stiffer than stock. When I took the stock out, I compared it to the new springs. The white was obviously stiffer than stock, but the orange was only stiffer when you compressed it down a bit. I decided to put in the orange since I was running out of time...I'll go with it for awhile and report back with more data.
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MXU / Re: mxu 150 clutching help???
« on: January 22, 2008, 02:32:45 AM »
sawhead...saw your posts..
If bombman doesn't know where to get lighter rollers.....have him look into Martin Racing Performance (mrp-speed.com). That's where I got mine (via dealer) a year ago.
If bombman doesn't know where to get lighter rollers.....have him look into Martin Racing Performance (mrp-speed.com). That's where I got mine (via dealer) a year ago.
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MXU / Re: mxu 150 clutching help???
« on: January 19, 2008, 11:15:20 PM »
I don't really know what to do to improve the low end other than the lighter roller weights. It doesn't really improve torque as much as it improves accelleration. I haven't really gone beyond that. Ours seem to have decent low end but it has to have the rpm's up to get it.
My dealer was getting stuff rom Martin Racing Performance (MRP-speed.com) for GY6 150 motors and stuff....maybe they have something you could check out there now...
I don't hear from the MXU150 owners on any websites like I thought I would.
It's been a great all around quad for us.
Hey...I would like to see a picture of yours with the 22" Mudlites.
My dealer was getting stuff rom Martin Racing Performance (MRP-speed.com) for GY6 150 motors and stuff....maybe they have something you could check out there now...
I don't hear from the MXU150 owners on any websites like I thought I would.
It's been a great all around quad for us.
Hey...I would like to see a picture of yours with the 22" Mudlites.
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MXU / Re: mxu 150 clutching help???
« on: January 19, 2008, 03:53:53 AM »
My son's mxu150 has ben running like a bat out hell. The only issues I have ever really had was once when it would suddenly cut out. It turned out to be a wire rubbing the frame. It was a wire going back to the rear brake light. Other than that, we did play around with some roller weghts and even slide weights but left rollor weights that were down a size or two. That improved acceleration.
It definetly takes the rpms up to get the clutch to engage.
We have 1200+ miles on it now...it has been through HE$$ and is still going strong.
Keep the front bushings greased and you be good to go!
It definetly takes the rpms up to get the clutch to engage.
We have 1200+ miles on it now...it has been through HE$$ and is still going strong.
Keep the front bushings greased and you be good to go!
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MXU / Re: Secondary spring change- MXU500
« on: January 18, 2008, 01:29:40 AM »
Thanks 500racer2.....
That is what I am thinking too.....the white spring is awefully stiff.
I think the orange is that spring you are referring to....it is stiffer than stock, but not as stiff as the white.
400racer likes the white it though....interesting.....I am thinking I will throw in the orange on first.
Hows the Rocky training going? How many raw eggs you eating a day now?
Seriously though....how is your two 500' s coming together...I know you changed over to a new frame on one right?
That is what I am thinking too.....the white spring is awefully stiff.
I think the orange is that spring you are referring to....it is stiffer than stock, but not as stiff as the white.
400racer likes the white it though....interesting.....I am thinking I will throw in the orange on first.
Hows the Rocky training going? How many raw eggs you eating a day now?
Seriously though....how is your two 500' s coming together...I know you changed over to a new frame on one right?
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MXU / Re: Secondary spring change- MXU500
« on: January 16, 2008, 02:43:06 PM »
4ooracer..
You have had the 'white" spring in for a while now. have you been riding race like courses latey and if so, is the white spring still a good choice?
Mine came in and I have the orange and I have the white spring....just debating which one to put in first and try.
500racer2....which spring did you go back to?
You have had the 'white" spring in for a while now. have you been riding race like courses latey and if so, is the white spring still a good choice?
Mine came in and I have the orange and I have the white spring....just debating which one to put in first and try.
500racer2....which spring did you go back to?
39
MXU / Re: Secondary spring change- MXU500
« on: January 16, 2008, 02:54:06 AM »
Thats kind of what I would have thought..
I remember when I took the stock spring out of my MXU300....I could pinch it closed (compredd it) with my fingers in one hand. The EPI spring I could barely compress it a 1/4 with both hands....much stiffer.
I imagine the white spring for the 500 would be the same.
I also ordered a Orange spring to...in case the white spring is too much.
I'll report back in week on the results.
I remember when I took the stock spring out of my MXU300....I could pinch it closed (compredd it) with my fingers in one hand. The EPI spring I could barely compress it a 1/4 with both hands....much stiffer.
I imagine the white spring for the 500 would be the same.
I also ordered a Orange spring to...in case the white spring is too much.
I'll report back in week on the results.
40
MXU / Re: MXU review
« on: January 15, 2008, 09:17:26 PM »
Yeah...I was meaning "pilot" when I was saying primary (thinking CVT I guess).
I meant that the pilot is real rich but the Main is the one that everyone has talked about changing after piping and K&N filter.
I am thinking the pilot jetting or needle valve is what needs to change to lean it up some on the low end....the 148 main would only show up at wide open throttle. I don't know if mine is lean or rich at wide open thottle.................ok...my eyes have crossed
I meant that the pilot is real rich but the Main is the one that everyone has talked about changing after piping and K&N filter.
I am thinking the pilot jetting or needle valve is what needs to change to lean it up some on the low end....the 148 main would only show up at wide open throttle. I don't know if mine is lean or rich at wide open thottle.................ok...my eyes have crossed
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MXU / Secondary spring change- MXU500
« on: January 15, 2008, 08:25:17 PM »
I know 500racer2 suggested to (to 400racer) to go to the EPI white spring. I thought he was just kidding ( I thought it was too stiff) but it sounds like 400racer is happy with it and maybe it would work good for me.
I have a white spring on order.
Question - Does anyone know what the stock spring spec. is? Is it more like the EPI blue spring?
<from EPI site>
Fits: 500 MXU
Color Part# 3" Load 1 3/4" Load
White KDS15 215 lbs 350 lbs
Orange KDS16 190 lbs 320 lbs
Blue KDS17 160 lbs 280 lbs
Be nice to know what stock is in comparison to what EPI has.
I have a white spring on order.
Question - Does anyone know what the stock spring spec. is? Is it more like the EPI blue spring?
<from EPI site>
Fits: 500 MXU
Color Part# 3" Load 1 3/4" Load
White KDS15 215 lbs 350 lbs
Orange KDS16 190 lbs 320 lbs
Blue KDS17 160 lbs 280 lbs
Be nice to know what stock is in comparison to what EPI has.
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MXU / Re: MXU review
« on: January 15, 2008, 08:18:04 PM »Excessive choking.
Yeah...that would do it. I think the 500's run real rich already in the idle range. I got a guy tweeking on my 500 as we speak. We have the 148 main on order but I think it is the primary is where mine needs a slight adjustment and where I will see more improvement.
Even with K&N filter and AC Racing pipe....you can see exhaust rich fuel smoke when I first gun the throttle. I think the primary is rich. Going to the 148 main will help the top end now I would think, but I think maybe tweeking the primary will help my throttle crispness and response.
What do others think?
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MXU / Re: MXU review
« on: January 15, 2008, 01:04:28 PM »The front shocks, wheels and tires are managers just for temporary testing. I left the jetting alone also. The race didn't turn out well, fouled a plug and didn't even make a lap. It looked good though.
Wonder what caused you to foul the plug?
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MXU / Re: MXU review
« on: January 15, 2008, 01:51:38 AM »
400racer....looks good.
I see you got the new wheels and shocks on.
Did you ever get the jetting done?
That was a race you were in?....How did it go? How is the 500 running?
I see you got the new wheels and shocks on.
Did you ever get the jetting done?
That was a race you were in?....How did it go? How is the 500 running?
45
MXU / Re: MXU review
« on: January 13, 2008, 04:14:10 AM »You got 2 pms racer...Hey.....no fair....you share race results with all of us
No Turnbuckle....that was a pict of 500racer2 himself on the MXU500 last year...right racer2?