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RACING General sled related racing discussion forum & classifieds

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Old 07-06-2016, 11:15 PM
1997formula583 1997formula583 is offline
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Default mods for radar runs?

Just seeing if anyone can give me any ideas on what I can all do to my sled to get more speed. I have bored, clutched, and gear it what else can I do. also what is the point of big idler wheels. seen them on a lot of drag sleds wondering what the purpose is for them.
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Old 07-07-2016, 12:24 AM
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Bigger rear wheels means the track doesn't flex as much, doesn't have to pull as tight of a radius.

Keep things light. You're not going to burn a tank of gas out there, i'd fill it halfway max. Pick up a 5gal jug of fuel, that's how much weight you're shaving off the sled doing that. Same goes for oil in the bottle.

Some guys will drill a shitload of 1/4" holes in the hyfax. Snow packs in there and keeps it lubed a little better.

Align EVERYTHING. Skis, skid, rear axle. Get your track tension set right.

Studs will give you more traction if your class allows it.

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Old 07-07-2016, 08:08 AM
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Wheel kits!! Get rid of the hyfaxs and stick in wheels. Easy ones are ones you can get that go between the rails. At least put some up near the front of the rails. Soften up your rear suspension so the sled will squat with the idea of packing the skis all the way down the run. Rear springs soft, front arm spring stiff. Run the track as loose as you can without ratcheting. If you want to get more into it, disconnect the oil pump and run pre-mix. We used to run as little as 200-1 mix for 500ft grass drags. Burning oil don't make power but you have to be careful if you make longer runs. And PLEASE don't run race gas or premium gas unless you have done motor work that requires higher octane. The less octane the hotter the burn. If your mfg says to run 87 you will hurt performance by running 91. We would test using timing lights to see what changes actually worked, but we really got into drag racing that may not be an option. Next best option is to use a buddy and run against his sled without making changes to that sled. And probably the biggest thing is to run a good drive belt that has a few runs on it to break it in then adjust deflection to fit.......Enjoy!!
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