Hustler spinger anyone?

[Model Citizen]

[bugeyed_99]

Contact member "whipper-ag". He will do it for you and ship them to you. I'm running his axles in my Max IV.

We've been in contact regarding ideas, on hold wit the AZ ride going on so I think this weekend im gonna tear into my two t20's and see how the look

[bugeyed_99]

quick update, Just got all the bearings from member Meinfield been 2-3 weeks and still no word from buffalo bearings, still battling those stupid press bolts in the axles though. Wife doesn't think I can complete the hustler springer this year so now the challenge is on

[bugeyed_99]

Rotax 503

Well I am now the new owner of a oil injected 503 rotax motor , not a cheap purchase but it should be a grat addition to the hustler when I get the springer mods done on it. Now to buy new sprockets and chains, what do you guys recommend, 50#, 60#?

[Bazooo guy]

50-1r should be strong enough for the chain.
Splined axles and sprockets would be best if you can get them made to fit.
I would also change the sprocket sizes cause the rotax will rev much higher.
Full throttle with my rotax is crazy fast and hard to control.
Gear it down a tooth or 2 after the t20 and it will have tons of torque.
Other members have changed gear ratios with great success.

[bugeyed_99]

Gear it down a tooth or 2 after the t20 and it will have tons of torque.
.

Splined axles will be the next upgrade but am just looking to get it driving and ready for the summer and the next big get together, Im not very tech savey so when you say gear it down you mean taking the 24 tooth and replacing it with a 22 tooth? and are you talking just the sprocket the chain from the transmission goes to, or do I have to gear all the sprockets down?

[hydromike]

Bazoo guy means add a bigger sprocket on the center axles only. You don't have to make any other changes to the other sprockets. You can cut the smaller sprocket off of the sprocket tube with out damaging it (a hacksaw works nicely if you don't have a lathe...) and replace it with a sprocket with a couple or several more teeth. Are you running 24 tooth primary sprockets on the center axles?

With a 24 tooth primary sprocket, stock T-20 output shaft sprockets, stock driven clutch diameter and a 22" tall tire, the Rotax will honestly propell the Hustler to about 45-50mph if the engine is running well. No joke. I've run two different 503s in one of the Attexes, and I decided to gear it down (add teeth) for the races at Ashtabula. (That's the "R" in my avatar on the Polish Hill at Ash')

If you're looking for stump-pulling power and don't give a darn about speed, you can really bump up the primary sprocket size on the center axle. My Hustler 980 has (I think... ) 40 tooth primary sprockets. With the engine spinning around 3000rpm the machine is really moving quite quickly (but that's with 26.5" tall tires). I bet you could gear down to 30 teeth on those primaries and never miss anything off the top end.

Check out these performance curves to really drive home *where* this engine is making most of its power. http://www.rotaxservice.com/documents/503perf.pdf

[bugeyed_99]

Ill be running 26" tires, ill have the extra weight from a springer build and would like a happy medium in torque and speed, no need to do 50mph (yet), don't want turtle speed either but would also like to be able to make it up a steep hill as well.

[Bazooo guy]

With the 503 rotax you should be spinning the tires on the way up the hill.
Land speed for a stock hustler is 35mph.
Great link hydromike
I like the torque specs around 5500 rpm

[bugeyed_99]

Nice, think ill try stock gears then maybe a 30 and 40 tooth. Now to find a hill

[Bazooo guy]

Your cvt will stay in low gear when you climb a steep hill.
Gearing will give you the torque you need for bigger tires and change the top speed.
When my clutch shifts to high gear I have to let off the throttle and run around 5000 rpm (until I get a roll cage installed)
If your tires are oversized you should consider a gear change to get more low end torque.

[bugeyed_99]

so heres my thinking, any input would be great. welding key stock onto the axles and replacing the sprockets with new keyed hubs on all axles, also the diameter varies on the new sprockets by about 0.58" what effect will that have on the machines, thoughts? opinions?

[bugeyed_99]

Rotax 503 arrived today, and all parts, exhaust, clutch oil injection. Hustler goes in the shop tomorrow for fan work should be complete in about 10 days.

[bugeyed_99]

I shall call it.........

Not sure what I should name this beast, but shes almost ready

[jpswift1]

VERY COOL! Nice work. Is it ready for a shakedown run?