yamaha04 Posted March 20, 2007 Author Report Posted March 20, 2007 thanks jeepman i was looking for some first hand experiance with this problem. im going to go with pro design it just seems odd to me that out of all the after market part out there that there is only 1 band that make impellers oh well have to pay for Quality Quote
FireHead Posted March 20, 2007 Report Posted March 20, 2007 thanks jeepman i was looking for some first hand experiance with this problem. im going to go with pro design it just seems odd to me that out of all the after market part out there that there is only 1 band that make impellers oh well have to pay for Quality There are two factors in play here. The PD units are made of more expensive stainless steel and the Mod Quad units are made from aluminum from what I gave been told in this thread. The other factor is that Mod Quad really doesn't have the quipment to making a part like an impeller in an efficient manner, or atleast they didn't the last time I saw inside there shop (it's been a few years now). Quote
yamaha04 Posted March 20, 2007 Author Report Posted March 20, 2007 well the stainless is definatly going to be better but still find it hard to beline and have always wonder why no one else makes them. like you can build a whole bike from nothing if you wanted to ussualy theres atleast 5 difference companies that make the same stuff that you have to choose from. they must take a pretty expencive rig to make them Quote
350shee Posted March 20, 2007 Report Posted March 20, 2007 me personally i would not buy any type of metal impeller, I have witnessed in several applications where the metal impellers make grooves in the clutch cover where the impeller rides on the clutch cover surface...IMO modquad or pro design needs to make a impeller that flows just like their billet ones, but make it out of a high quality plastic. Quote
FireHead Posted March 20, 2007 Report Posted March 20, 2007 well the stainless is definatly going to be better but still find it hard to beline and have always wonder why no one else makes them. like you can build a whole bike from nothing if you wanted to ussualy theres atleast 5 difference companies that make the same stuff that you have to choose from. they must take a pretty expencive rig to make them It's not necessarily that expensive of a machine that you need to make them, but once the machine is set to make them you can't really make anything else without pulling out some of the tools (if you have a more expensive machine that holds more tools it would help, but then you have to make that much more money with the machine to pay for it). To complicate the matter further, you don't really need a live tooled CNC lathe (a live tooled lathe costs about twice as much as a standard 2-axis lathe (the live tooling servos can be bloody expensive as wel)) to make many other items in the genre of parts Mod Quad sells. What I am guessing they do is make the impellers in a two setup operation on a vertical CNC mill. The problems you have with this method is that you have a harder time controlling concentricity and roundness. If the Mod Quad impellers are in fact aluminum (I still haven't confirmed that), you have to wonder why they made that material choice. It's not the worst choice, but it seems like the delta in cost between the aluminum and stainless wouldn't be a compelling enough reason to make the decision based purely off that. Like I said before, if you have a problem with a Mod Quad part, you need to call them. They have some of the best customer service around. :thumbsup: Quote
yamaha04 Posted March 20, 2007 Author Report Posted March 20, 2007 me personally i would not buy any type of metal impeller, I have witnessed in several applications where the metal impellers make grooves in the clutch cover where the impeller rides on the clutch cover surface...IMO modquad or pro design needs to make a impeller that flows just like their billet ones, but make it out of a high quality plastic. i still have my stock plastic one and so does my buddie and a bunch of people on here that have had this problem. even the plastic ones will cut your case away i would imagin the pro design ones are better buecause they would be perfectly centerd and round. my plastic one isnt centers and rubs on my case is one spot. so i wouldnt say the metal impellers are bad they are most likly waybetter because they would be perfetly round oh yeah and the waer that you have seen is probably from the original stock plastic one Quote
FireHead Posted March 21, 2007 Report Posted March 21, 2007 i still have my stock plastic one and so does my buddie and a bunch of people on here that have had this problem. even the plastic ones will cut your case away i would imagin the pro design ones are better buecause they would be perfectly centerd and round. my plastic one isnt centers and rubs on my case is one spot. so i wouldnt say the metal impellers are bad they are most likly waybetter because they would be perfetly round oh yeah and the waer that you have seen is probably from the original stock plastic one You won't think the plastic impellers are bad until your bike starts overheating in the middle of the dunes during the day and you can't figure out why. I have had more of the OEM impellers disitegrate or melt than I care to think about. :thumbsup: Quote
Mullet Man Posted March 21, 2007 Report Posted March 21, 2007 http://www.rockymountainatv.com/productDet...dFamilyId=16045 ModQuad: stainless shaft, billet impeller http://www.rockymountainatv.com/productDet...odFamilyId=5791 ProDesign: stainless shaft, billet impeller $30 price difference at RMATV carry on... Quote
FireHead Posted March 21, 2007 Report Posted March 21, 2007 http://www.rockymountainatv.com/productDet...dFamilyId=16045 ModQuad: stainless shaft, billet impeller http://www.rockymountainatv.com/productDet...odFamilyId=5791 ProDesign: stainless shaft, billet impeller $30 price difference at RMATV carry on... Did someone not say that the Mod Quad unit was made out of aluminum in this thread? If I had to choose to buy one based off that info, I would probably buy the ModQuad unit because I am a cheap bastard and I like to complain about stuff. Quote
yamaha04 Posted March 21, 2007 Author Report Posted March 21, 2007 You won't think the plastic impellers are bad until your bike starts overheating in the middle of the dunes during the day and you can't figure out why. I have had more of the OEM impellers disitegrate or melt than I care to think about. :thumbsup: oh firehead i know the plastic ones are shit mines starting to crack i was just telling the guy that the wear he was probably seeing was from the original one and that the metals ones are better Quote
KlotzBanshee Posted March 21, 2007 Report Posted March 21, 2007 Does anyone have any experience with the one Vito Quote
2bzy2p Posted March 21, 2007 Report Posted March 21, 2007 ive had nothing but great luck with pro design,,been buyin pro design for many years on many different applications cant go wrong! Quote
FireHead Posted March 21, 2007 Report Posted March 21, 2007 Does anyone have any experience with the one Vito Quote
FireHead Posted March 21, 2007 Report Posted March 21, 2007 ive had nothing but great luck with pro design,,been buyin pro design for many years on many different applications cant go wrong! Pro Design makes a great product. The quality is always there with them. Their stuff is more expensive than others most of the time, but whatever you buy from them will be right the first time. :geek: Quote
jayzx10r Posted August 26, 2008 Report Posted August 26, 2008 (edited) I'm looking for a new impeller...glad I found this!! Looks like the PD for me. The search pulled through for me again :thumbsup: Jay from SanD. Edited August 26, 2008 by jayzx750 Quote
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