All-Terrain Lawn Tractor Forum

Like riding lawn tractors through mud, woods, rocks, and snow? Then this is the place for you! Share your ideas, Post your projects and more!
 
PortalHomeFAQSearchMemberlistRegisterLog inCountdown Timer
Swing by the Chatroom anytime! Next Chat Event - 12/16/2017 @ 8:00pm EST .
Welcome to the All Terrain Lawn Tractor Forum!
Voting for the 2017 Build-Off has ended! Click Here to view results!
The prize list has been finalized! Check out what's up for grabs by clicking here!
The new 2017 ATLTF stickers are in! View them here, and order yours while they're hot!
We now have a Discord chat server! Contact Doug for an invite link!

Share | 
 

 Very fast lawnmower question

View previous topic View next topic Go down 
Go to page : Previous  1, 2
AuthorMessage
Chopperhed
Moderator
Moderator


Join date : 2012-10-14
Posts : 801

PostSubject: Re: Very fast lawnmower question   Fri Nov 30, 2012 9:52 am

I need to know the model of the bike for any better info.
an 80 tooth #50 sprocket is 16.5 inches in diameter. you'ld only have an inch or so clearance under the sprocket.


A jackshaft only takes as much space as the largest sprocket plus a little for chain and guard clearance.

Mine only uses a roughly 5"x 5" area 12" wide, and it could be narrower, I could have used a shorter shaft.
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Fri Nov 30, 2012 9:59 am

I will do some measuring. I have a good amount of room where the sprocket will go. Thanks for all the help man.
Back to top Go down
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Fri Nov 30, 2012 11:55 pm

Video of the engine and most of the frame
http://www.youtube.com/watch?v=EUa4rqWrtDI
Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 12:40 am

That an XS400 motor, Should have the electric knee.

Use the XS400 motor speeds I posted above for a rough guess as to your speeds.
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 12:59 am

Probably another stupid question but would I use a go kart sprocket or a motorcycle sprocket? Or does it not matter? I was just wondering as chain size might differ? I did some measuring and the closest point to my axle is on the back where the hitch goes. I have about 4x3/4 inches of room on one side for a sprocket. The next closest is the bottom where the sprocket might hit the ground which is about 7 inches away. I took a video. Should I go with a 60 tooth or a 75? I found this sprocket on Ebay.
60 tooth= http://www.ebay.com/itm/NIP-Northern-Industrial-Tools-Go-Kart-Drive-Sprocket-60-tooth-35-chain-4-hole-/200855076391?pt=Go_Karts&hash=item2ec3e53e27
80 tooth http://www.ebay.com/itm/GO-KART-HORSTMAN-2-PIECE-SPROCKET-GEAR-80-81-TOOTH-35-CHAIN-CART-PART-/261134349292?pt=Go_Karts&hash=item3cccd1f3ec&vxp=mtr
75 tooth= http://www.ebay.com/itm/75-Tooth-Go-Kart-Sprocket-35-Chain-Sprocket-Go-Kart-Racing-Sprocket-Aluminum-/200847000290?pt=Race_Car_Parts&hash=item2ec36a02e2&vxp=mtr


I also need to know what kind of chain to use? Just any normal motorcycle chain?
Video of me measuring. http://www.youtube.com/watch?v=-oYJbXGLf84
Back to top Go down
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 1:57 am

Electric start and kick start?
Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 8:10 am

The sprocket on the engine is a 530 chain, which is the same as #50 chain. 520 chain is the same pitch (5/8") but is narrower and won't fit a #50 sprocket.

You'll have to use a motorcycle sprocket on the engine but any #50 sprocket will do for the rear.

The only way to get the top speed down to 55 or so is with a 90 tooth sprocket on the axle. Unless you go with the jackshaft.

I watched the video and you have ample space for a jackshaft in the tunnel. Another pair of Flanged bearings and a shaft midway between the engine and axle would be adequate.

Also since your tire is only about 16" tall, the biggest sprocket you could go with is a 70 tooth.

With a 16 tooth stock front and a 70 tooth rear and no jackshaft, you will see approximately 85 mph in 4th gear, I'm sure thats a six speed engine with 5th and sixth being overdrive gears, so your top end would probably be closer to 110mph

Remember that engine stock put out 38 hp @ 8800 rpm

I used this calculator http://www.compgoparts.com/TechnicalResources/SprocketCalculator.asp
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 9:54 am

Is there a number on the engine?
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 12:42 pm

I am scared if I toss a Jackshaft I will not have room for my shifter set up, electronics, and exhaust. I also wanted to keep the engine close to the middle of the tractor as possible to balance the weight. What size sprocket did the stock motorcycle have on it? I am not going to be pulling with the tractor I am just going to use it to ride around so as long as it wont stall out every time I go to take off.
Back to top Go down
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 1:00 pm

The numbers I found were 2LO-O11219
Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 1:36 pm

@CraftsMAN wrote:
I am scared if I toss a Jackshaft I will not have room for my shifter set up, electronics, and exhaust. I also wanted to keep the engine close to the middle of the tractor as possible to balance the weight. What size sprocket did the stock motorcycle have on it? I am not going to be pulling with the tractor I am just going to use it to ride around so as long as it wont stall out every time I go to take off.
The stock bike had a 38 on the back IIRC, and a top speed of 105
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Sat Dec 01, 2012 1:50 pm

That number shows up as eaither a 78 xs400E, or a 79 XS400F

The E/F models had a electric start and 13 Amp charging system. Take note that this engine will probably NOT run without a battery. Check the XS400 forums for more info on electrical mods etc
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sun Dec 02, 2012 3:10 am

So that 60 tooth sprocket would be ok? Or which one should I go with?
Back to top Go down
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sun Dec 02, 2012 3:23 am

Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Sun Dec 02, 2012 9:04 am

Gp tith the Biggest #50 sprocket you can get
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sun Dec 02, 2012 11:53 am

I have been looking on ebay but cant find the right sprocket. Can you recommend a website? Or a sprocket that will work? If the sprocket does not give me enough low end then I will install a jackshaft. Your help is very appreciated.
Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Sun Dec 02, 2012 12:04 pm

whats your axle size?
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Sun Dec 02, 2012 1:01 pm

1x32 inch.
Back to top Go down
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Mon Dec 03, 2012 8:24 pm

I found a 70 tooth sprocket but am unsure about fitment. Check it out and let me know what you think..
http://www.ebay.com/itm/281031482464?item=281031482464&viewitem=&vxp=mtr
Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Mon Dec 03, 2012 10:57 pm

you are better off finding a #50 sprocket with a 1" keyed hub. The misery of trying to adapt a bike sprocket isn't worth it.

Check out www.princessauto.com.

Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Mon Dec 03, 2012 11:11 pm

I picked up an adapter for it.
Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Mon Dec 03, 2012 11:30 pm

Sorry bud. Sl70 used #420 chain, or narrow @40 chain, That sprocket is a different pitch than your engine.
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Wed Dec 05, 2012 5:33 pm

Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Wed Dec 05, 2012 6:41 pm

The size tooth count and pitch are good, just need to make sure it has a 1" bore. The one in the pictur looks like a 2 inch
It may be possible to get an adapter sleeve to mate the two.
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
CraftsMAN
Skilled
Skilled
avatar

Age : 31
Join date : 2010-06-01
Posts : 339
Forum Rep : 0
Location : NY

PostSubject: Re: Very fast lawnmower question   Mon Dec 17, 2012 5:21 pm

So I had a 60 tooth sprocket and it was WAY to big. Holy cow. So I am looking at a 40 tooth one. I figured with gears I will still have good low end..
Back to top Go down
Chopperhed
Moderator
Moderator
avatar

Age : 51
Join date : 2012-10-14
Posts : 801
Forum Rep : 0
Location : Edmonton, Alberta, Canada Eh!

PostSubject: Re: Very fast lawnmower question   Mon Dec 17, 2012 5:30 pm

40 tooth is not much bigger than a stock sprocket, but your tires are shorter so it will help some.

You won't have a real pulling gear, but it should pull OK
Back to top Go down
http://http:\\members.shaw.ca\ducksgarage
Sponsored content




PostSubject: Re: Very fast lawnmower question   

Back to top Go down
 
Very fast lawnmower question
View previous topic View next topic Back to top 
Page 2 of 2Go to page : Previous  1, 2
 Similar topics
-
» Very fast lawnmower question
» Boston Qualifying Question
» lawnmower drive pulley question
» My son's Bug to be used in Fast - Furious 5 (how sweet is that!)
» How fast should a K100RT be?

Permissions in this forum:You cannot reply to topics in this forum
All-Terrain Lawn Tractor Forum :: Tractor Project Builds :: Off Road/Rally Tractor Project & Builds-
Jump to: