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Old 01-24-2008, 10:20 AM   #10576
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Originally Posted by B18C Turbo View Post
Guys, I ordered HPIa495 39t ball diff pulley for the cyclone. I got it and it has wider pulley teeth than the HOT61050 pulley. Also the HPI pulley has larger cut outs in the diff ball section to hold the diff balls, so the diff balls can move up and down, whereas in the Hotbodies pulley they can't.

Stormer hobbies and speedtechrc.com both have the HPIA495 pulley listed as a balldiff pulley for the cyclone. If you look at your manual, it calls for HOT61050. Although both pulleys have the same bearing diamater and thickness, it looks like the HPI pulley woudl work beside the fact the pulley for the belt is wider and the diff balls may move around.

Anyone have experience with this?
I've been using the older pulleys for quite some time. Actually did it because way back in the thread a lot of people were using them and thought they were smoother. I don't think I could notice much of a difference either way.
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Old 01-24-2008, 10:45 AM   #10577
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Originally Posted by Jaz406 View Post
I'm running a 13.5 pro with rubber tires. One way in front and diff in back.

The diff will come loose after one run. I have plastic out drives and a new titanium screw and nut. I have broke them in and tightened them in steps and they loosen or will snap the screw over time.

I can get some alum. out drives will this help?
There are many opinions listed in this thread on the problem with the Cyclone diff screw and what it takes to fix it. I have had very good results using the delrin diff (instead of the aluminum halves), the stock diff screw, a large amount of anti-wear grease applied to the diff screw shaft, spring, and thrust bearing, and a little bit of threadlock on the diff nut. Knock on wood, I've been running the same diff screw for many months, running 27T and 19T motors, foam and rubber tires, on both carpet and asphalt. My Tamiya TB-02used to break diff screws until I started using a large amount of anti-wear grease in the same way. I think it helps keep the diff screw from heating up and cracking. My $0.02 anyway.

Andy
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Old 01-24-2008, 01:07 PM   #10578
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Originally Posted by Jaz406 View Post
I'm running a 13.5 pro with rubber tires. One way in front and diff in back.

The diff will come loose after one run. I have plastic out drives and a new titanium screw and nut. I have broke them in and tightened them in steps and they loosen or will snap the screw over time.

I can get some alum. out drives will this help?
make sure to use the HPI 3x6mm black nylon shim
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Old 01-24-2008, 03:58 PM   #10579
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does anyone know where i could get the washer that goes on top of the steering column that sits on top of the bearing before you put the top deck on top? I do not wish to buy a whole new servo saver set just to get this single part.
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Old 01-24-2008, 05:15 PM   #10580
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does anyone know where i could get the washer that goes on top of the steering column that sits on top of the bearing before you put the top deck on top? I do not wish to buy a whole new servo saver set just to get this single part.
The original HPI part is a 4x6x2mm washer.

Try this bushing from SERPENT #SER401044 - it's a 4x6x2mm bushing for the S400

Or just hunt around for a 4mm washer with a small OD.
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Old 01-24-2008, 06:01 PM   #10581
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Originally Posted by B18C Turbo View Post
looking for a good setup for a moore-speed using foams on carpet
Check this page http://www.petitrc.com/view_news.php?id=4622 , cyclone in mid page, you may find something!
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Old 01-24-2008, 08:05 PM   #10582
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anybody shop from www.rcmarket.com/hk? they have amazing prices and look pretty darn good!
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Old 01-24-2008, 08:14 PM   #10583
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anybody shop from www.rcmarket.com/hk? they have amazing prices and look pretty darn good!
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Old 01-25-2008, 12:00 AM   #10584
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Quote:
Originally Posted by adavid View Post
There are many opinions listed in this thread on the problem with the Cyclone diff screw and what it takes to fix it. I have had very good results using the delrin diff (instead of the aluminum halves), the stock diff screw, a large amount of anti-wear grease applied to the diff screw shaft, spring, and thrust bearing, and a little bit of threadlock on the diff nut. I think it helps keep the diff screw from heating up and cracking. My $0.02 anyway.

Andy
Thanks Andy
I'll try it, any certain grease you use?
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Old 01-25-2008, 05:47 AM   #10585
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Broken axle:
My axle broke at groove before the coupling. What is the best way to prevent this from happening? Besides stop hitting the boards, shims or cut the axle.
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Old 01-25-2008, 05:57 AM   #10586
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Originally Posted by B18C Turbo View Post
anybody shop from www.rcmarket.com/hk? they have amazing prices and look pretty darn good!
I have 3 times and will again, It takes about 10 days to get to my house.

Where do you put the 3x6 nylon shim and what will it do ?

Last edited by Lazer Guy; 01-25-2008 at 06:23 AM.
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Old 01-25-2008, 07:10 AM   #10587
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Thanks Andy
I'll try it, any certain grease you use?
No problem. Hope it helps. I either use Tamiya anti-wear grease or the grease in the red container that comes with the kit.

Andy
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Old 01-25-2008, 08:17 AM   #10588
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Originally Posted by B18C Turbo View Post
anybody shop from www.rcmarket.com/hk? they have amazing prices and look pretty darn good!
yes I have ordered there and everything went just fine. shipping was a little higher than a couple other HK online shops but the prices were low enough that my order was still less expensive than the others.
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Old 01-25-2008, 10:50 AM   #10589
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I have 3 times and will again, It takes about 10 days to get to my house.

Where do you put the 3x6 nylon shim and what will it do ?
they have killer prices on all their stuff! amazing! Yes if you check out your insutrction manual, it shows a HPI nylon 3x6mm washer that goes in the thrust assy. My diff was missing this peice and it chewed up the thrust washer and made the diff clunk and break. You NEED that HPI nylon washer, ill ge you a part # when i get home, there cheap liek $1.90 for 10 of them.
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Old 01-25-2008, 11:20 AM   #10590
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The washer you need for your diff is part #Z203. This washer is NOT nylon. It's made of steel. Nylon wouldn't last very long under pressure.

The washer is the last piece to slide onto the diff screw before sliding into the hub for assembly.

It goes -->thrust washer-->bearings-->thrust washer-->spring-->steel washer(Z203)
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