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  #1  
Old 12-18-2016, 03:51 AM
toomanytoys2's Avatar
toomanytoys2 toomanytoys2 is offline
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Join Date: Sep 2012
Location: Lefty California
Posts: 284
Default Keeping the CVT belt cool

After I lost a CVT belt in a field by my house, I made this little mod to help keep the CVT belt cool. I borrowed the idea from someone else, but don't remember who. The metal is from an old security door, and I had an old Howitt engine that I stole the side case from. Since I take this thing to the desert, I also made a little tool to hold the variator and clutch. That way I can do a belt change in the field. I am also mounting an ammo can on the HH to hold some tools and an extra belt.
Attached Images
File Type: jpg clutch disc.jpg (98.4 KB, 15 views)
File Type: jpg Howitt cutaway.jpg (96.8 KB, 11 views)
File Type: jpg Finished Howitt assembly.jpg (94.4 KB, 13 views)
File Type: jpg Variator tool 1.jpg (96.0 KB, 11 views)
File Type: jpg Variator tool 2.jpg (94.3 KB, 11 views)
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2005 Hammerhead 150
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, Custom Exhaust, 10G rollers, 1500 Contra Spring, 2000 Clutch Springs

Just added - 2007 Joyner 250 SV - Let the fun begin

4-Dirt Bikes, Baja Bug and enough toys to keep me in the garage and out of trouble.
  #2  
Old 12-18-2016, 09:08 AM
xlint89's Avatar
xlint89 xlint89 is offline
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Location: cleveland OH
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Default

Other things you can do also is:

Remove that tiny little rubber "snorkel" from the air intake towards the front of the engine. Then put a scotchbrite pad over the opening as a filter and clamp that on.

Also grind down all the casting slag from the CVT cover openings. One towards the middle and 1 in the back.This will also help to keep the belt cooler.
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My Yerban assault vehicle: 2.2mm stroker crank, 62mm Nikasil cyl, Taida large vavle head, American made valve springs, ported intake manifold, TM 28mm carb, stock CDI, Bando coil, TK exhaust, stock CVT except for the 14g sliders, 13/40 internal gears, 16T drive, 31T axle sprocket, 22" rear tires, and ONE BIG POTATO CANNON mounted on top..........
  #3  
Old 12-18-2016, 09:18 PM
toomanytoys2's Avatar
toomanytoys2 toomanytoys2 is offline
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Join Date: Sep 2012
Location: Lefty California
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Default

What I did in the snorkel area was to remove it and I clamped on a 1/4" thick piece of foam that has very little restriction. I don't normally drive in wet areas so we'll see how it works.
__________________
2005 Hammerhead 150
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, Custom Exhaust, 10G rollers, 1500 Contra Spring, 2000 Clutch Springs

Just added - 2007 Joyner 250 SV - Let the fun begin

4-Dirt Bikes, Baja Bug and enough toys to keep me in the garage and out of trouble.
 


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