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Post by allworld on Jun 28, 2008 11:47:29 GMT -5
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Post by realitycheck on Jun 28, 2008 12:02:45 GMT -5
Im guessing of course, but couldnt these parts be ordered through the dealer? In my case it would be Scootertronics and they may already have then available since they do a lot of mods.
Up to a 32 percent power increase with the transmission upgrades? Man, that would be sweet.
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Post by medic7577 on Jun 28, 2008 12:05:23 GMT -5
Sweeeeeeet! More Power! Looks expensive though, and as you said, allworld, wholesale only. But, I do have a Linhai dealer right here in my little Mississippi town....haha. Too bad there isn't a MRP dealer in the state.
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Post by allworld on Jun 28, 2008 17:37:58 GMT -5
Hello realitycheck: If you go to www.mrp-speed.comthere is a list of places/dealers that you can get the parts from. scootertronics is listed. |
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Post by realitycheck on Jun 28, 2008 17:57:55 GMT -5
Thankx Allworld, I will check into it Monday and let you guys know how much moola we're talkin here. I know 32 percent is being real optimistic but if it gets anywhere close, jeez, that would make for one interesting ride.
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Post by rerun2 on Jun 28, 2008 18:42:46 GMT -5
Michael and the guys carry almost everything MRP has on the market as in house items, they may be out of stock on something at times, but I know they do all they can to keep these items on the shelf. These things are not cheap no matter where you buy them!! OK, big question here... just what does the 32% increase in power mean?? This is more than a little confusing to me. OK, I don't claim to be a mechanic or anything like one, but I have been around mechanized modes of transportation for over half a century and cannot relate to this claim, as I think of power production. Maybe Jacine or someone else can shed more enlightenment on this... I would love to see how others see the matter. My thinking is this, there is absolute power, speaking of the amount of work an engine or motor CAN produce. Ignoring the electric motor here, we are looking at internal combustion engines. So, any given engine design and configuration can produce a maximum amount of 'power', which we normally designate with a horse power number. This rating is with a given fuel. Forget about nitro injection and all the other exotic stuff, it would all equal out in a real application. Here we have a claim of a HUGE power increase, so stated, attributed to a CLUTCH. OK, with some aero dynamic 'tweaking' an engine capable of X can produce a result of X+ by reducing drag, actually the engine does nothing above normal, it is the result of sleeker design that same horsepower can make it SEEM to be more powerful, the result is as if achieving the enhanced result with unrefined aerodynamics which would require additional horsepower. So this 'increase' can be called a change in EFFECTIVE HORSEPOWER. The power plant has not produced one additional erg, but the effect is an increase, the same thing happens when you change gears, as the differential in ratio changes, so does the EFFECTIVE amount of energy, purely a mechanical function. So here we have a CVT, not really 'geared' but acts as such. The engine drive, or driven gear, increases in diameter due to the centrifugal force forcing the roller/slider weights outward from the gear shaft. This in turn pulls the CVT belt forward, forcing the clutch at the axle to give as the halves are forced apart. OK, here is the point... no matter what is done to the clutch (at the axle) the 'gearing' there is limited by the amount of EXPANSION at the front or driven gear. In other words, the only way the clutch set up in its entirety COULD produce a 32% increase in EFFECTIVE POWER would be by changing the FINAL drive ratio. Now, the 'gear' size at the axle cannot be changed by the clutch, the minimum size capable is already determined regardless of the clutch. So to produce ANY true EFFECTIVE POWER increase would have to happen by a larger diameter being achieved at the DRIVEN GEAR. Yes, you can achieve this by reducing the spacer at the driven gear halves, but that has nothing to do with the 'new' clutch. Sorry for the diatribe folks, I might be all wet here... forgive me is that is the case. I just cannot see how the claim is valid. It might be 'marketing language' and the springs and such can get more/quicker response and such, but as to over all power production, I call "FLAG ON THE PLAY"... I don't see any way any appreciable top speed is going to change with this. Certainly not to the degree of a 32% increase in horsepower would produce. I am certain they have 'found credible' some way to make the statement, but it isn't what most people think of, or would hope for...   |
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Post by realitycheck on Jun 28, 2008 19:14:16 GMT -5
Rerun, you may very well be right, I dont know either. If it is power thats added to the take off, I would welcome it. This is my opinion only. Given all the great attributes the 300 has, its one weak spot is the hole shot, once again in my opinion. Could be because I weigh 320 pounds, I dont know.
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Post by allworld on Jun 28, 2008 19:28:41 GMT -5
Maybe over the winter or in the off season I may add some upgrades, I'm not sure. The coil and air intake seem reasonable. I am not going so sink endless cash into my scooter for power and performance which I don't really need . I like the performance so far so if and when I have to replace some parts I will probably go for the better ones.
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Post by rerun2 on Jun 28, 2008 21:43:46 GMT -5
Hey guys, I am not knocking modifications, I AM knocking deceptive claims... the mods in the CVT generally DO improve acceleration and quicker response through the power band. Allworld, first thing to try out for better get up and go off the line might be lighter roller weights, tried and true method of getting pretty noticeable off the line zip!! Most all of the new owners of these 300 'super rides' have not put enough miles on them to really know what they will actually perform like... typically as the parts wear in and seat performance is steadily improving, nothing is all that obvious as it happens, but just suddenly one day you do notice things, and LIKE it!!!  Mods on a bike are worth the money and effort if that is important to the owner. I don't think there is a cylinder kit coming out anytime soon for the Linhai Yamaha engine, but if there was I would not be excited to much, I believe the existing 257cc and 275cc are already 'enhanced' 250 engines. I think that better air flow and the appropriate jet adjustments will give pretty decent improvements, with out really big expense, Air Intake, jets, and free up exhaust generally really add umph to the performance. Good luck to all, do let the rides break in before tweaking! ;d |
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Post by czechmate on Jun 28, 2008 22:16:46 GMT -5
The easiest think to upgrade would be the air filter. I'd love to replace the ugly plastic box with a nice air filter. I don't think that is should cost too much. I'm not going after performance with this scooter so I don't care what they claim. I'm 140Lbs dude and in speeds above 60MPH it feels like the scooter is going to take off...in other words I don't feel comfortable in higher speed yet.
I'm going to look at the other stuff as well. It might be a nice a winter project.
realitycheck,
Let us know if you find out about the prices.
Thanks,
Nik
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Post by czechmate on Jun 28, 2008 22:32:36 GMT -5
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Post by allworld on Jun 29, 2008 7:13:01 GMT -5
I really don't need much get up and go either, I am only 150Lbs., I too don't like the look of the plastic air intake. For under $30.00 it can be replaced.
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Post by czechmate on Jun 29, 2008 9:20:40 GMT -5
allworld,
What did you find? The scootertronics air intake is like $299 for 150cc scooter.
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Post by rerun2 on Jun 29, 2008 9:39:58 GMT -5
YIKES!!! That price tag sounds like the cost of a new performance exhaust system! I know they carry some of the Dragon Chrome items, last I looked those items were pretty high for the chrome intakes but no where that high... raccoon I need to check out the site! ;D
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Post by rerun2 on Jun 29, 2008 10:03:12 GMT -5
Did some poking around on different parts sources, typical price for a simple Uni Filter (various makes on the market) are all less than $30.00. That is all you need to do the job, remove the ugly air box and there you go!
replacement intake units (hose & connections) come in all manner of colors and are in the $50.00 and under price range. Unless you just want to change things for the sake of change, this is a waste of money in my opinion.
On the 150cc and 50cc scooters, I have seen a number of them that have gone over to the K&N/Uni style filters and left the original air box in place, some guys have painted them with either silver or red paint for whatever reason. Raccoon that they did not like the looks without the box, but didn't like the black plastic either!
The $299 scootertronics air intake elluded me, could not find anything there at that price... ?
;d
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Post by Paul on Jun 29, 2008 15:57:40 GMT -5
I brought this up in an earlier post on the forum, but has anybody checked out the Bandit Motorsports website? They offer a performance upgrade for $149.00. This includes a better air cleaner than the original, a rejetted carb exchange, and a larger opening for the exhaust. I talked with one of the guys there and he said that they will ship all parts to you, including a rejetted carb. You do the upgrade yourself, then you return your original carb to them. Supposedly, this will only improve the initial acceleration up to 40 mph. It "may" also improve gas mileage.
Paul
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Post by czechmate on Jun 29, 2008 16:27:05 GMT -5
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Post by scooterollie on Jun 29, 2008 17:45:53 GMT -5
Rerun has it right. Those claims are pretty astronomical for simple coil, CDI and clutch upgrades. I have a lot of respect for MRP but this may be too much. I think the upgrades offered by Bandit (at a much lower price)make more sense but, even there, we have to wait to see what they actually do before recommending them. MRP has always been high on their prices.
The coil and CDI - maybe, maybe not. A lot depends on the actual differences between the O.E. parts and what MRP offers. As for the air filter, you can even keep the O.E. box, adding the cone filter inside the box, as Earl has done on his scoot. I have communicated with Bandit about the mods he offers to the 300 but don't know exactly how he opens up the muffler.
Visited Scootertronics yesterday and spoke w/Tommy. He told me they have one of the MRP kits in now and hope to get around to a test on a 300.
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Post by rerun2 on Jun 29, 2008 20:57:49 GMT -5
OK Nik, found what you are talking about, these are a 'kit' consisting of:
OKO 30mm carb
EMGO 48mm Air Filter
MRP Chrome Intake
I would think that all these parts could be purchased separately for less money. A LOT less... but I have not ever looked to see what these would go for at all. Just seems to me this is quite expensive.
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Post by czechmate on Jun 29, 2008 21:13:36 GMT -5
At this point I'm only interested in the air filter. Simply, I don't like the ugly piece of black plastic. Other than that I really don't think that this scooter actually need any kind of upgrades. Please let me know if you know about a cheaper source.
Thanks,
Nik
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Post by rerun2 on Jun 29, 2008 21:26:12 GMT -5
Hello Nik, I am not sure about the Linhai 300 engine, but I think it is the same 'block' as the 260 (257cc). If that is the case, I would think that the air filter would fit just fine. So that might be the 'match' to shop for.
The Air Filter itself can be 'made to fit' if the diameters don't match perfectly... most of the Uni styles are seated with a hose clamp anyway, and the radious is pretty generous, larger than it needs to be, and really is not meant to be a tight fit. The hose clamp secures it quite well.
Parts for Scooters
Oregon Vintage
scootertronincs
CBXman
Scooterworks
Heeters
All come to mind as places to get parts such as air filters. Any local cycle shop probably has a suitble filter as well.
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Post by allworld on Jun 30, 2008 9:27:59 GMT -5
Per the video by MRP, the 2 air filters are:
1. N-MP 071-71
2. N-MP 0785C1
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Post by rerun2 on Jun 30, 2008 11:53:45 GMT -5
good info allworld!! thanks! |
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Post by czechmate on Jun 30, 2008 13:13:00 GMT -5
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Post by allworld on Jun 30, 2008 13:41:16 GMT -5
Hello Czechmate: I never found any pricing, I went to all the websites posted on their site of "Power Dealers" and never found the items. Let us know if you do  |
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Post by rerun2 on Jun 30, 2008 14:20:21 GMT -5
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Post by czechmate on Jul 5, 2008 21:53:17 GMT -5
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Post by stanwalton on Jul 6, 2008 22:23:59 GMT -5
Getting rid of the black air box is of interes to me. If I were to make my own filter, what would I take into consideration?
1- The amount of restriction resulting from filtration
2- Relationship between carb jets and volumn of air
3- Noise as a factor in increase in efficiency.
4. Material from which to fabricate a filter.
Thoughts?
Stan
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Post by czechmate on Jul 7, 2008 8:17:44 GMT -5
Okay, I asked Mike at scootertronics about the filter idea and this is what I got from him.
"I would not do this it will hurt your scooter and it will not run right."
I'm certain that he knows what he's talking about. Too bad they're so busy and he couldn't explain what exactly the problem is. I'm assuming that the carb would have to be re-jeted to accomodate the increased air flow.
Nik
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Post by scooterollie on Jul 7, 2008 8:47:11 GMT -5
The big problem with any changes you make is that they have to be balanced with the other aspects of engine tuning. Intake, carb. and exhaust all have to be in sync. for proper performance on these small engines. Once in a while you get lucky and may notice an improvement when only one factor is modified - but not usually. As Michael said, often you hurt performance or, at the very least, spend a lot of time and $ and not get any improvement. From the factory, you get pretty decent performance out of the 300. With 40+ Linhai 300s on the forum, we will have someone who experiments to find out. Most folks with 150s found out it was easier and maybe even cheaper to just upgrade to a 250 - at least at last yrs. prices. With a 400 cc rumored to be in the works at Linhai for next year, maybe it is better to just wait.
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