| |
08-26-2005, 01:13 AM
| #1 |
| Quarry Creeper Join Date: Mar 2004
Posts: 234
|  Twin force as a crawler? How is this truck as a crawler out of the box? I want a rig that is ready to go and crawl some rocks right away. What do I have to put into it in order to make a rock worthy rig? thanks Dima |
|  |
| Sponsored Links | |
| | |
|
08-26-2005, 06:53 AM
| #2 | |
| Quarry Creeper Join Date: Feb 2005 Location: Indy
Posts: 259
| Quote:
 here's what mine took on..... My next project...."Dragonslayer" I'm very happy with the outcome!!! | |
|
| |
|
08-26-2005, 07:01 AM
| #3 |
| TEAM MODERATOR   Join Date: May 2004 Location: Tennessee
Posts: 10,770
| Out of the box..............Decent at best. The Twin was designed to be a racer type truck to compete with all the others. With ANY truck out there you will HAVE to lock the axles,gear it down,make a certain degree of mods to the suspention and probly mod the steering. I'm tickled with my Twin and wouldn't go any other route,other than maybe a TXT-1. The 2 link doesn't provide a great deal of twist. At the same time,the 2 link arm bushings can be easily modded to allow better twist. I also ran into a guy on another site that replaced the bushings with a set of Associated pillow balls and his 2 link would twist as good as most 4 link set ups. It comes factory with a dual motor/battery set up like the maxx. I've seen a few Twin crawlers with the factory dual set up. It's much better to eliminate 1 motor/battery for weight. Move the syeering servo/servo's down to the axle. Although,I believe Tracker is running his steering from the chassis from a 1/4 scale servo. It can be done either way,it's really your choice. Honestly,the TXT is a better "out of the box" crawler. You'll still need to make some of the same mods to it as you would a Twin though,to make it a good crawler. From what I've seen here,the TXT has some stout drivetrain and is a good truck to start with. IMHO though,I'm a firm believer in my Twin axles/drivetrain as far as strength is concerned. My Twin axles have been locked solid and spinning Kongs since the day I pulled it out of the box. The factory ring and pinion didn't last long but it's a cheesy aluminum gear set. I upgraded to the steel set and it's been golden. I haven't broke anything else axle wise to this day. I think I could have made the aluminum set last longer though with shims. On my son's Twin,I shimmed up the aluminum gear sets a little tighter and they are still running strong. The only other trouble I've had,and was probly my fault to,was stripping out a spur gear. I probly had the gear mesh to loose and caused the spur to strip out. I'd recomend the Twin but I'm kindly biased. Honestly,you can't go wrong with either a TXT or a Twin. |
|
| |
|
08-26-2005, 09:19 AM
| #4 |
| owner, Holmes Hobbies LLC  Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 14,854
| outta the box the txt is less work initially, but i agree with raptor- the twin axles are just plain stout. they are made for 40mph bashing, so they take quite the beating. |
|
| |
|
08-28-2005, 11:52 AM
| #5 |
| Rock Stacker Join Date: Jul 2005 Location: Canada, Ontario
Posts: 51
|  if pic not work click here ^^^ my trucks including an old pic of my modded twin(pic is a link), its a great rock crawler. i agree with the stock truck not being a great crawler. but, i've seen some good flex from the 2-link after some very minor mods...  if pic not work click here Last edited by Brute_Crawler; 08-28-2005 at 11:55 AM. |
|
| |
|
08-28-2005, 01:01 PM
| #6 | |
| Power of the Portals Join Date: Feb 2004 Location: where ever the wind fawkin blows me, tx
Posts: 4,572
| Quote:
| |
| |
|
08-28-2005, 04:55 PM
| #7 |
| Lifetime Gold Baby!   Join Date: Sep 2004 Location: GA
Posts: 530
| that's the exact reason for my choosing the twin for a crawler...the durability...the few things in the drivetrain that can fail (cast ring and pinion) are available in machined steel...and are reasonably priced (although my original stock gears are still going strong after a LOT of crawling)...narrowing the axles is a very simple job as is converting to a 4 link setup. and I strongly believe you won't find ANY truck as stout as the twinforce right out of the box. and yea...a single motor with a GD600 on 8 cells provides a ton of power...much more than you will ever need crawling. good luck. |
|
| |
|
08-28-2005, 08:58 PM
| #8 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 14,854
| I am starting to get the overbuilding bug in me too, cobra. i want a crawler that can handle 40mph + and still crawl as good as a modded txt or other shafty. |
|
| |
|
08-29-2005, 03:23 AM
| #9 |
| Lifetime Gold Baby! Join Date: Sep 2004 Location: GA
Posts: 530
| there are 2 problems you will need to overcome in order to have a truck that handles acceptable at 40 mph and still crawls good. one... you will need to find a balance between a super soft crawling suspension and one thats firm enough to take a corner at 40 without flopping over. (or you will need to change either springs, shocks or both whenever you change from crawlin to bashin) and two...the gearing. if you gear down enough to crawl decently you won't be hittin 40 mph no matter what motor you have. so that means you will either need to get a 2 speed trans (think Emaxx) or swap out the gear reduction every time you go from bashin to crawlin... OR...you could make some sacrifices in both areas and find an acceptable medium on both levels...again...good luck |
|
| |
|
08-29-2005, 08:55 AM
| #10 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 14,854
| i want to have both speeds usable without any changes or stops. emaxx tranny doesnt work. ive tried that. its gonna be a tough one to crack, but i think its possible. |
|
| |
|
08-30-2005, 09:43 AM
| #11 |
| TEAM MODERATOR Join Date: May 2004 Location: Tennessee
Posts: 10,770
| At 1 time I also wanted a crawler/basher in one rig. I played with using the maxx tranny also and it just won't work. The gear ratio is just to close between 1st and 2nd. IMHO,you'll need a completely custom tranny with a much wider gear ratio. As far as the gear ratio is concerned,I think it would be cool to have maybe a 3 or 4 speed tranny. That way you'll have serveral gear ratios to choose from. It would be complicated to build but I think it would possable and a better way to do it. As far as spring rates and such,I feel that a guy could find a happy medium. I mean,you probly couldn't take your crawler/basher and win races at the track but you could still run a speed and have fun with it. You couldn't fine tune it for high speed cornering and HUGE jumps like a purpose built racer/basher. I feel with a little give and take and alot of trial and error,the suspention part would be fairly easy to pull off. Build a super stout 4 link front and rear with alot of options for shock mounts and link configuration,play with different shocks,mounting points,springs and oils till your happy. Honestly,I'd like to see it done,I just ain't got the time to fool with it that much. For me,and probly alot of guys,it's alot easier to just have 2 rigs. |
|
| |
|
08-30-2005, 10:03 AM
| #12 |
| Rock Crawler   Join Date: Nov 2004 Location: in a basement in Kalispell, MT
Posts: 869
| Solution for speed issue. Brushless with emaxx tranny. 6 cell battery for crawling in 1st gear. Put in 12-14 cells in second gear for higher speeds. |
|
| |
|
08-30-2005, 12:54 PM
| #13 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 14,854
| that would be a pretty good solution, except that brushless motors dont like being undervolted. the torque would suck, and the efficiency would suffer greatly. on top of that i dont know of any brushless that would have good startup torque and still spin fast. two pole inrunners suck for crawling no matter how low they are geared. they just wont start up consistantly when stalled. i agree, it is easier to just have two rigs. I am not satisfied with easy. a three speed tranny or wide ratio tranny would sure help, but I am still stuck on a two motor tranny where only one motor is engaged at once. If a wide ratio tranny was used, a big outrunner might be the best single motor solution. It would have to have the amp draw to push a big rig at very low reductions (20:1 final) because of the very slow rpm/volt that they have. So many paths to follow, so little time to actually get it done. |
|
| |
|
08-30-2005, 04:46 PM
| #14 |
| Pebble Pounder Join Date: Apr 2005 Location: England
Posts: 116
| instead of brushless could just use the same thoery with say TITAN motor and the gears  |
|
| |
|
08-30-2005, 07:58 PM
| #15 |
| Rock Crawler Join Date: Nov 2004 Location: in a basement in Kalispell, MT
Posts: 869
| I've been running a Novak HV with great success, on 6 cells. Enough "startup torque to twist 1/8th scale dogbones and universals. Had a xxx4 on 5cells with a Lehner motor and it would run like a brushed 10t on 6 cellls. Research, trial and error is the key to a happy setup. |
|
| |
 |
| Thread Tools | |
| Display Modes | |
| |
Linear Mode
