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06-26-2009, 11:44 AM
| #1 |
| Quarry Creeper Join Date: Jun 2008 Location: phx
Posts: 208
|  CR-01 needs a diet
Hi All, I'll first disclaim that I understand that the cr-01 is a scaler and not ever going to compete with a berg but that doesn't stop me from trying so here goes. My buddy loaned me his cr-01 so I could improve its performance as a crawler. I'm doing this b/c I have a berg and we crawl together and the cr-01 just is disappointing and I think a little discouraging to my friend. With that said I have managed to improve its ability by shedding some of the weight my friend added. When I got the truck it weighed just over 9lbs. I have managed to get it down to 7.25lbs (running 2s 1800mah lipo). In addition to reducing the weight and modifying the suspension I've managed to increase its climbing angle from 50 degrees to 56 degrees. Again this has made huge improvements. I feel if I could reduce its weight some more I can get some more performance out of it. So my question is this, who has a light truck and what did you do to get it there? In addition, has anyone been able to get this thing to climb near 60 degrees or more? I'm not interested in swapping out chassis or anything too major. Since I'm new to the cr-01 I just wanted to know from the veterans if there are any other major mods I can do to help this thing out. Thanks for your help. |
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06-26-2009, 12:02 PM
| #2 |
| Rock Stacker Join Date: Dec 2008 Location: Eagle Mountain
Posts: 50
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More details about the current setup would help us to provide better feedback on how to improve the climbing ability of your friends CR-01. Pics of the current setup (Body off) from several angles would probably work. If he is still running the stock cantilever setup then the easiest improvement would be the zip-tie trick to remove the slop. EePee's CR-01 thread has a lot of great tips and you can follow the evolution of his rig, which has a very stock setup, yet is a capable climber. Next I would look at upgrading the stock tires. You can see the setup of my rig in this thread (body off shots are at the end of the thread): Testing new suspension setup - warning - lots of pictures! Last edited by FreshMeat; 06-26-2009 at 12:12 PM. Reason: Added link |
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06-26-2009, 12:17 PM
| #3 |
| Rock Stacker Join Date: Dec 2008 Location: Eagle Mountain
Posts: 50
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Moving the battery off of the rails onto the front axle will help with climbing and stability greatly.
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06-26-2009, 01:15 PM
| #4 |
| Quarry Creeper Join Date: Jun 2008 Location: phx
Posts: 208
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I do still have the battery in the stock location, but the lipo is significantly lighter than the nicad that was there. I'll have to look into moving the battery to the axle. What amazes me is that this thing is over a pound heavier than my berg. It just seems way too heavy for what it is.
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06-26-2009, 11:37 PM
| #5 |
| Rock Stacker Join Date: Sep 2008 Location: Ewa Beach, HI
Posts: 76
| LOWER Your COG
1st - Change your suspension from cantiliver to Losi 4" shocks. Then droop the suspension. Freshmeat has a good suggestion to place battery lower towards the front axles. 2. change stock tires to comp 2.2 tires ie. Losi Rock Claws or Proline Hammers or whatever you like. Weights for each tire: Each front tire and rim should add up to 11-11.5 oz (1lb each) Each rear tire and rim should add up to 4 -5 oz (.5lb or less each) Thats it for now. Good Luck... Here my rig climbing 65+ angle... http://s533.photobucket.com/albums/e...yaK5Blazer.flv Last edited by Vtown Crawl; 06-26-2009 at 11:43 PM. |
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07-06-2009, 08:47 AM
| #6 |
| I wanna be Dave Join Date: Mar 2009 Location: sittin in the sky
Posts: 4,630
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i dont have a cr-01 but id suggest losi rock claws the are by far some of the best all around crawling tires ive ever owned. and keeping a rig as light as possible and the cg down low helps a ton
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