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Old 02-05-2007, 01:14 PM   #1
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Default losi slipper clutch

i'm getting back into the hobby and had a few questions.

can i fit a slipper clutch into my old school jrx-pro transmission? if so who makes it and where can i get one?

does anyone know where i can possibly find the three gear tranny conversion?

finally, can the jrx-pro even compete now-a-days with the modern cars? all else equal (driving ability and electronics) would the suspension, and transmission of the modern cars really make that much of a difference? are they significantly lighter?

thanks for any responses.
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Old 02-05-2007, 02:31 PM   #2
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To run the older slipper setup you need the longer spur shaft.

The retrofit XX tranny is probably just as hard to find.

None of these have been made in years. I have done what you are talking about doing a couple years ago with my Jrx-Pro and I am telling you it is not worth the hassle. http://homepage.mac.com/patridge/PhotoAlbum45.html

eBay is pretty much the only source for parts. Just get a new or used XXX or b4 off ebay.

If you had all the parts I would say it is still a pretty good car. The steering is not as good as the new stuff. You can use b3 rear rims for wheels.
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Old 02-05-2007, 04:21 PM   #3
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thanks for the response.

can you elaborate a little more on why it's not worth the hassle? if nothing else, i'd like to have a slipper clutch fitted to control the car better on the track.

also, i don't want to beat a dead horse, but what are some of the technological advances of today's off-road 2wd cars that makes them superior to the older-ish cars...and i'm not talking rc-10 or jrx-2 old?
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Old 02-05-2007, 07:06 PM   #4
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It is all a hassle because some parts, especially transmission, are hard to find now.
The best way to get parts is buying whole cars on ebay, but then your are left with lots of extra parts.

If you really want the slipper, here is all the parts you need.
A-3120 Slipper Shaft
A-3004 Gear Cover (old one doesn't have room)
A-6905 3/16" x 5/16 Bearing goes in spur
A-3121 Backing Plate
A-3122 Gear Plate
A-3123 Friction Pad
A-3124 Springs, Cup, Spacer and Washer
A-3125 9/16" x 1/4" Thrust Bearing Assy
A-6305 4-40 Locknut
A-3904 Slipper Gear 84T
A-3906 Slipper Gear 86T
A-3908 Slipper Gear 88T
A-3910 Slipper Gear 90T

I don't know enough about cars like the XX and B3 to tell you what makes them so much better than the XXX and B4. I skipped all those when I was out of the hobby.
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