Author Topic: Belt Guides, Both Pulleys?  (Read 3687 times)

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Offline Nkaratzas89

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Belt Guides, Both Pulleys?
« on: March 25, 2015, 08:53:29 pm »
Hey guys,

Im to the stage where I need belt guides installed, before I can give the Mod XR mower a test, but I was wondering if Belt guides were necessary on both front and rear pulley? The clutch loosens the belt u quite a bit but the belt still grabs both pulleys when rotated by hand - could definitely pose an issue if somethings not done...

Any help would be great!

Thanks,
Nico
Nico
MP Mowersports #89 CP/Mod-x

2016 Prove It Mower Racing - 2nd Place Mod-xr
2017 ARMA 3rd place SP
2018 ARMA Mod-x National Champion

Offline docbro

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Re: Belt Guides, Both Pulleys?
« Reply #1 on: March 25, 2015, 09:56:16 pm »
Both pulleys as well as the clutch itself.  Look at George's MTD build (early ones) and they will show placement of the guides.  Also look at EC's billet clutch assembly and it will show a guide pin on each of those pulleys too.
Kenny "Doc" Holder
2013 ULMRA FX Champion
2013 USLMRA 5th FXT
2012 USLMRA 3rd FX
2012 USLMRA 7th FXT
#606 GP, CP, BP, FX, FXT

Offline Nkaratzas89

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Re: Belt Guides, Both Pulleys?
« Reply #2 on: March 26, 2015, 06:30:02 am »
Both pulleys as well as the clutch itself.  Look at George's MTD build (early ones) and they will show placement of the guides.  Also look at EC's billet clutch assembly and it will show a guide pin on each of those pulleys too.

Great! Thanks for the help- I have a belt guide for the clutch off of a JD that just bolts onto the same bolt the pulley rides on! For the engine and tranny pulleys I will be welding bolts about 1/4 - 1/2 inch away from the lip of each pulley.

-Nico
Nico
MP Mowersports #89 CP/Mod-x

2016 Prove It Mower Racing - 2nd Place Mod-xr
2017 ARMA 3rd place SP
2018 ARMA Mod-x National Champion

Offline PJG56

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Re: Belt Guides, Both Pulleys?
« Reply #3 on: March 26, 2015, 08:34:30 am »
Great! Thanks for the help- I have a belt guide for the clutch off of a JD that just bolts onto the same bolt the pulley rides on! For the engine and tranny pulleys I will be welding bolts about 1/4 - 1/2 inch away from the lip of each pulley.

-Nico


Put the guides as close to the pullies as you can without hitting
Paul Guptill  (oppy) #238modX
2012 slmra mowstock champion(builder/owner)

2013 slmra mowdified champion(builder/owner)
2013 ARMA national champion Mod-X(builder/owner)
2014 ARMA national champion Mod-X(builder/owner)
2014 All American Champion Mod-X/CP(builder/owner)
2014All American Champion FXT (engine builder)
2014 All American 2nd place SP(builder/owner)
2015 All American 2nd place BP (builder/owner)
2016 OutlawTriple Crown FXT Champion (engine builder)

Offline Nkaratzas89

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Re: Belt Guides, Both Pulleys?
« Reply #4 on: April 01, 2015, 08:01:32 pm »
Quote
Nico,

   The best arrangement is to put two guides by each pulley, 1/8" from the outer edge, at 90 degrees from the pulley-to-pulley centerline.  Do not put guides at the ends of the pulleys -- it will interfere with allowing the belt to slacken for proper shifting.

Thanks for the advice- Got it all fixed! Belt guides were in, and my old pulley for the transmission wasn't allowing the belt to slip enough, so I bought a new anodized one and now everything works great! Should be testing this puppy out in a few days, still have to get new brake lines and pharrels, but besides that, Its time to Rock and MOW!
Nico
MP Mowersports #89 CP/Mod-x

2016 Prove It Mower Racing - 2nd Place Mod-xr
2017 ARMA 3rd place SP
2018 ARMA Mod-x National Champion