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 PULLEY HELP

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Chunk
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Chunk
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PostSubject: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 7:20 am

As some of you know, I opted to make my own pulleys by cutting out the centres and welding in new ones. The engine pulley is straight as can be.

My problem is the rear one. Somehow Ive managed to make it off centre and tilted a little bit. I was wandering if this would make a difference to the drive line. Im really pissed off at it, I spent ages yesterday making sure they were centred.
I dont want to damage the inut shaft of the trannym and idk if it will make me belts pop off. Any help would be g reatly appreciated!

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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 7:31 am

Damn... I did this once. I hate to say it but I had to start over. Mine was really off center. How far is it off? if it was less then a quater inch I wouldn't worry too much about it. Unless you want it to be perfect. Probably the worst thing that would happen is the clutch might chatter a little bit when engaged.

This is where welding sucks!! lol
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 7:52 am

I made the welds super strong too. I think Im better off buying a pully.

Bad news is they're aluminium, good news is that they arent really cheap ones, so it should last. I can only get one in 4 3/4 inches are 6 inches though. Well, the metric equivilant. 19mm bore will need to be widened a tiny bit. What size should I go for, Ive got a 6.5" up front. and had a 5.5" in the rear, but that's useless, I dont want the clutch to be chattering about really.
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 8:05 am

with a 6" up front, that thing is gonna fly! I'd try to get atleast a 5" in the rear. But thats my presonal preferance. I guess it depends on what your gonna do with it. If your JUST mudding, then fast is fine. I like having a slow first gear for steep hills, towing, rockcrawling, or just going slow over big bumps. It makes it more of an "all purpose" rig.
The murray used to be alot faster... It was too scary to drive on anything other then a smooth surface. I had to slow it way down to wheel.
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 8:48 am

I dont want this thing going too fast. Least with the 6 speed I have a choice of speeds though. I reckon I'll got for the 4 3/4 inch pulley then.

Is it usual for old peerless trannies to have oil and grease fittings?
I just pulley a scrap tranny out for the spider gears and it looks like it has oil in it, just away to crack it open, came in the grab the camera lol!
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 9:01 am

I don't know about that one, maybe dangorustoys can chime in. Are you gonna double up the spiders or weld it up?
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 9:14 am

Double it up. Thats why Im using another tranny for the spiders. I may want to go back to stock one day.

The tranny I jsut opened up is weird, full of what looks to be stock heavy weight gear oil, and grease fittings on the axles. Looks like a really heavy duty tranny if it worked.
I just gotta check that video lynolsoffice made a while back about tranny repair, make sure I take my proper tranny apart right!
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 11:11 am

hey chunk, ive seen those trannys before. I had a tractor and it had the heavy duty gear oil inside her. The guy that i bought it from said that the tractor was made for a lawn service company and it was specialy made. It had the greese fittings and everithing. But someone might have done that them selves, you never know.

about your pulley, witch way is it off center? You probably dont have Canadian tire but they sell all the pulleys and belts and the pulleys ate like $5.00 can. and the belt are like 10 or 15.00 can. I dont know if it would be worth shipping over but watever.
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 7th 2010, 12:17 pm

The shipping would be a killer. There's a severe lack of pulleys anywhere in the UK, not as much demand for them I guess.

It's off centre horizontally, Im gonna order one of the pulleys I mentioned before from machine mart.

Wish shipping didnt cost so much to the USA from the UK and vica versa. Otherwise I'd order alot more stuff from over there!
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PostSubject: Re: pulley help   PULLEY HELP Icon_minitimeMarch 20th 2010, 9:58 pm

hey we run a 5" on 5" on our off road mowers it seems to work the best good low end and nice top end we order our pulleys from www.phoenix-mfg.com/
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 21st 2010, 3:50 am

Chunk: I hate to say it too- id cut it off n start over- itll be spinning pretty good and it might throw the belt. i got lucky when i welded mine- the guy had the splined adapter - all i had to do was weld it on the flat deck pulley - tacked it a few times, kept checking it and then welded it up good.

Fearlessfront: Ive seen a couple transmissions with gear oil - one is in my 82 ( thought it was an 84) dynamark - has a drain and fill plug - ironically i have a spare trans exactally like it off a 70's simplicity.

The other kind ive seen is a peerless 700 ( lower input side output kind)- has oil in it, murray transmissions also can use oil - the one in my 94 murray has a fill hole under the pulley .


As for stock grease fittings on a transmission/axle shafts? Never seen one in the 15 years ive tinkered with tractors.

On my mod murray i used a 6" motor and a 3" trans pulley - that thing would go scarey fast - had it in 4th of the 6 gears and almost flipped it when i hit a bump in the road.
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 21st 2010, 7:48 am

Gerry: How fast does your Deere top out at? Ive got a 6" up front and I can either get a 4.5" for the rear or a 5.5". Not sure which to go for. I'd ideally like a 5.

Yeah, those fittings are weird. They look just as old as the tranny, may have been added though. I think Im gonna weld the back axle on the spare one, see if I can get that to work too! Then I could maybe build another mudder Very Happy probably with a little more speed.

That pulley site is great. got everything one would need. Think that one is gonna be a sticky.
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PostSubject: Re: Pulley Help   PULLEY HELP Icon_minitimeMarch 21st 2010, 9:12 pm

My Deere's top end is around 12 to 15 mph. I had it up to 25 mph it was unstable so I slowed it down I run a 5 inch on a 5 inch. The Deere is for extreme off roading not racing. We trailer our mowers to the trails.
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeMarch 22nd 2010, 1:04 pm

I want to hit about 20mph with mine. Im gonna go with a 4 5/8 inch pulley for my rear. See how that works out. I'll still only be using low gears for mudding with though, but crossing large open areas, I want more speed!
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeJuly 22nd 2010, 8:03 pm

Hi
I am new to all of this but i watch alot of videos chunk and i was just wondering i want to restore a mower but also make it in to a racing onee.
Soo what size pulleys would be the best for speeed..
Cheeers
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeJuly 22nd 2010, 8:53 pm

Changing pulleys isnt the only mod youll need to do for fast applications- youll need : direct steering ( stock steering wont work- ive had first hand experience) , lowering the machine/widening the stance , high performance brakes AND saftey gear - like a helmit.

I went upwards of 30mph on my murray and nearly crashed - i took that tractor apart to redo it sometime, but in the meantime I built a MTD thats lowered and pretty quick and handles tons better .
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PostSubject: Re: PULLEY HELP   PULLEY HELP Icon_minitimeJuly 23rd 2010, 7:23 am

Unfortunaly, you cant have a restored AND fast machine. THere'll have ot be some comprimise somewhere, either in the speed or restoration.

Most of the off road tractors on here dont need direct steering because none really go over 15mph. If you want to go fast, you'll need to upgrade the brakes, and fill the gear box with oil instead of that lovely benodite grease Laughing But with a stock tractor, you'll want a lower centre of gravity, so the seat being lowered will help alot.

If you want to keep a restored tractor but have it a little fast I'd say a 1:1 ratio at the most would be ideal. Still plenty of pulling power, and a nice top speed to go crusiing with. What kind of tractor is it anyway? bounce
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PostSubject: racing mower   PULLEY HELP Icon_minitimeOctober 19th 2011, 3:20 pm

I have a 12'' on the front and a 6'' on the rear it tops out at about 45mph don't forget the brakes and locking the front stearing. check out the Dynamark racing mower by me that is my build.
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