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Post by bankRUPPt on Jan 26, 2009 14:06:53 GMT -6
Josh is on to something with the bearings and seals. Some local guys here that race cats take all the seals out of their suspension bearings and wash all the grease out with Slick50 and run them without lube. Just doing the wheels in the suspension they picked up two tenths. These guys are running well over 100mph in 500 feet with their open sleds, though.
If you're looking for more speed, update to a 102C hor hex clutch. You'll notice gains from the hole shot all the way to top end using a clutch you can tune for the sled and track conditions.
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Post by onlyhere4themoney on Jan 26, 2009 16:30:50 GMT -6
The 73 is a 5 port cylinder the 72 is a 3 port with the finger ports. What difference does it make you can't run the 73 cylinders with the 72 exhaust. unless you are cheating?  ?? I know and you know your sleds are fast so what do you mean by slow Rick, As you know, I like to keep this site from being boring. I would like to see the differences first hand, Hope to see you this weekend, we will have the 72 back out on the track. Paul get a 73 cylinder and look. If you are talking about racing my sled it wouldn't prove anything. no matter who won. |
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Post by Sticks on Jan 26, 2009 18:19:47 GMT -6
Short of taking the heads off is there anyway to to determen if a 72 and 73 tuhatsu motor is a S or not? I have 7 0r 8 motors sitting in my shop with no serial #s
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Post by onlyhere4themoney on Jan 26, 2009 19:23:32 GMT -6
Look in through the exhaust port with a flashlight.
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Post by onlyhere4themoney on Jan 27, 2009 20:22:09 GMT -6
Rick, As you know, I like to keep this site from being boring. Paul you aren't doing a very good job. You are going to have to kick it up a notch before everyone falls a sleep.  |
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Post by romanowski on Jan 28, 2009 12:06:12 GMT -6
Rick, I been to busy trying to keep ahead of that 72 of dan's.
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Post by onlyhere4themoney on Jan 28, 2009 16:41:22 GMT -6
LOL I told you long ago TOHATSU POWER |
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Post by nitromaniac on Feb 1, 2009 19:11:37 GMT -6
So do you agree with the double wedge in the rear sus.? I will build a couple of lube systems this week, As far as the clutch goes I love to get a 102, anybody have one they what to sell? Just read this thread - Sticks, 2 wedges are perfect, but don't use more than 2, those leafers will bust right at the mounting bracket, but loosen up the track as suggested and one more thing, loosen up the rear coil springs. This will keep that weight transfer to the rear, the front of the track will be jammed into the ground, and the skis barely touching the ground the whole way. Good luck! ;D |
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Post by rog929 on Feb 2, 2009 12:10:04 GMT -6
I've tried both the 102c ,hex, and the "quick shift" clutch image sells on a nitro 2 and trail twister. the hex was 2mph faster but I'm sure if I kept playing with the comet I could get it. If you put a 102c on the nitro put some washers between the motor plate and the engine to raise it a little. you will still have to grind the steering arm some to get the belt on and off. I have a video on you tube with my Merc at 86mph (hex) and my buddies at 84 (comet). I really like the hex other than the maintenance. If you have a gram scale you can also make your own "thunder shift" type kit with stuff from the hardware store. Get a bunch of machine washers
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Post by Sticks on Feb 2, 2009 19:49:01 GMT -6
Were getting off on this just a little. the sleds I have been working with on this project are 73 340 and 440 nitro Fan, I realize manythings carry over from the liquids, but they don't share the same kind of hp. I believe the 73 is a stronger motor than the 72 but the 73 exhaust keeps it from being as competive as the 72 in a stock class.
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Post by onlyhere4themoney on Feb 3, 2009 5:03:16 GMT -6
You are right sticks
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Post by rog929 on Feb 3, 2009 14:44:22 GMT -6
Who said anything about liquids??
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Post by onlyhere4themoney on Feb 3, 2009 18:00:28 GMT -6
Sticks if you really want it to hook up use the 75 F/A springs. <a href="http://s220.photobucket.com/albums/dd163/snosnake/?action=view¤t=Jacob-Rupp00000-1.jpg" target="_blank"><img src="http://i220.photobucket.com/albums/dd163/snosnake/Jacob-Rupp00000-1.jpg" border="0" alt="Photobucket"></a> |
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Post by Sticks on Feb 3, 2009 18:19:15 GMT -6
Clearly I must be doing some thing wrong, The only way I get the front of my sled off the ground that high is to get off the sled and pick it up!
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Post by onlyhere4themoney on Feb 3, 2009 19:02:13 GMT -6
That would be my son Jake
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Post by Sticks on Feb 3, 2009 19:22:55 GMT -6
Rick, thats very impressive, what's under the hood? I don't think it stock
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Post by onlyhere4themoney on Feb 3, 2009 20:07:38 GMT -6
73 440 fan cooled TOHATSU with 72 Nitro exhaust.
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Post by yankeedoodle on Feb 3, 2009 20:21:51 GMT -6
will the 72 Nitro exhaust still exit in the same place? I tried my Yankee motor in my 73 and it was off quite a bit. Nice lookin sled.
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Post by onlyhere4themoney on Feb 4, 2009 5:05:10 GMT -6
If I remember right I had to make the hole a little bigger. I change stuff on that sled so much it's hard to remember when I did what to it.
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Post by romanowski on Feb 4, 2009 15:43:54 GMT -6
Yea that is the birthday boy's sled, his stocker...... 73 with 72 exhaust and alum. skis........... yea just pulling your chain a little, happy birthday you old fart.
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