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 Pulley swap on mtd

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Dipshaw87
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PostSubject: Pulley swap on mtd   Sat Mar 29, 2014 10:40 pm

Has anyone ever done a pulley swap on an mtd? I was thinking about a 4 inch pulley on the engine and 4 on the back. Is it possible? What precautions should I take in order for it to work properly. It's just gonna be a trail rig not much of a mud romping rig
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redlinemotorsportts
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PostSubject: Re: Pulley swap on mtd   Sat Mar 29, 2014 11:03 pm

Id just go bigger on the front. someone on here did a 7" front and got roughly 35mph... So maybe 4-5" and go from there. Belt has to be perfect or it will have a hard time clutching

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Dipshaw87
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PostSubject: Re: Pulley swap on mtd   Sat Mar 29, 2014 11:05 pm

What size belt would I need to get? And what would be the best ratio for that cause 35 mph is a bit fast for me lol
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redlinemotorsportts
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PostSubject: Re: Pulley swap on mtd   Sat Mar 29, 2014 11:09 pm

@Dipshaw87 wrote:
What size belt would I need to get? And what would be the best ratio for that cause 35 mph is a bit fast for me lol
I honestly have no clue... axle ratio is like 26:1 (thread called how do i lock a fnr i think has gearing calculations) and the vari drive thing screws it all up for my ratio and gearing calculations. Kinda a guessing game. And i think you might need a tentioner to MAKE a belt work, like i said you have to be spot on to my understanding

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Dipshaw87
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PostSubject: Re: Pulley swap on mtd   Sat Mar 29, 2014 11:12 pm

Oh ok. Well for now I was thinking about getting rid of the 12 inch pully on the transaxle and getting a 5 or 6 inch and a smaller belt with tensioner and go from there? I'm new to modding mtd vari drives lol
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PostSubject: Re: Pulley swap on mtd   Sat Mar 29, 2014 11:21 pm

I also heard 1/2 inch belts suck. What would be better to use?
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 2:23 pm

@Dipshaw87 wrote:
I also heard 1/2 inch belts suck. What would be better to use?
I think mtd uses 5/8" belts, the front pulley isn't set up for 1/2" belts. Fearless front and Maine mud mower all use 1/2" belts, so their OK, I hear that 5/8" belts kinda stink in clutching depending on your configuration, I know people with tall gearing and lots of belt slip when you start off use 5/8" because they burned the belts. Mowron's I think.

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Dipshaw87
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 2:28 pm

Well I was thinking 1/2 inch vbelts
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 2:40 pm

@redlinemotorsportts wrote:
Id just go bigger on the front. someone on here did a 7" front and got roughly 35mph... So maybe 4-5" and go from there. Belt has to be perfect or it will have a hard time clutching
I ran 7 on the front and went 23mph. I had a 7.25 on the back.
Run 5:5 and you will be alright 5/8 front belt 1/2 rear belt.
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 2:43 pm

I might do 7 on front and back. But should I get vbelts for the front and rear?
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 2:52 pm

Go 5 front and rear. In my experience the 7 spun the vari drive way to fast. Yes you will need v belts but those can either be calculated or trial and errored at your local tsc lol
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Dipshaw87
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 2:56 pm

Ok well how'd you have yours did you put vbelts on both or just run the regular ones?
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 5:29 pm

@Dipshaw87 wrote:
Ok well how'd you have yours did you put vbelts on both or just run the regular ones?
the regular ones are v belts. Yes, you have to change out the sizes to accommodate the pulley swap.
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Dipshaw87
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PostSubject: Re: Pulley swap on mtd   Sun Mar 30, 2014 7:23 pm

Oh ok cause the belts on mine the front one is a standard flat belt and the rear looks like a v belt
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