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Old speed control problems

Old 08-30-2009, 04:33 AM
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Default Old speed control problems

Recently I bought a box of r/c stuff from a guy that was getting out. Inside I found a old electric truck. I think it's an old Tamiya. Any- way, Threw in some batteries and presto it came to life. Only problem was it wouldn't go backwards.It has a old hitec SP-1500 speed controller. I was wondering if there was a manual available for it. It has a Futaba AM radio with it that appears to work fine. This little old truck is alot of fun and if the speed control is bad I think I'll get another one. Where can you get a cheap brushed speed control from.
Old 08-30-2009, 05:18 AM
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Default RE: Old speed control problems

Quick Google search didn't turn up much on that speed controller. You can get a new one pretty cheap, check out Towerhobbies and Horizonhobbies, both of them stock a bunch. A basic brushed speed controller can be had for as little as $30 probably. Got any pics of the truck? I'm curious as to what it is.
Old 08-30-2009, 07:20 AM
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Default RE: Old speed control problems

I own about 10 of these Sprint by Duratrax escs, i think they are the best value out there. The can run 7 cells! , and they have reverse, i have not had one problem with them. They are rated for 20-27 turn motors, but i have run 19's no problem. They are only $29.99 - http://www3.towerhobbies.com/cgi-bin...&I=LXAMN7&P=ML
Old 08-30-2009, 07:23 AM
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Default RE: Old speed control problems

Thanx man. I'll get some pics of it for ya. I'm curious too. I haven't run cars for 20 years when I bought a Tamiya f-150. Back then they came in about 1000 littse pieces and you built it all. I was so proud of that truck and still have the remnants of it in the attic somewhere. This thing has re-sparked me and I think I'll have to try to get back into it. Man have things changed. I still have a speed control that mounts on top of the servo with 4 or 5 springs for resistors. Old ain't I
Old 08-30-2009, 08:31 AM
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Default RE: Old speed control problems

No reverse may not be a "problem" with the ESC. Many esc's simply do not have reverse. If any of the previous owners raced the vehicle then it probably intentionally does not have reverse as reverse is (was?) not allowed. Many of the modern esc's that do have reverse allow it to be locked out for racing.

New ESC's are not too expensive for what you want, here are a couple of links to check out...
http://www3.towerhobbies.com/cgi-bin...?&I=LXGMR5&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXKYX5&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXAMN7&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXGNG5&P=7

I'm not really reccomending any of these, just giving you an idea of what's available.
Old 08-30-2009, 11:15 PM
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Default RE: Old speed control problems

I see, Dave, you mentioned the Duratrax sprint also, the three others you mentioned are 6 cell rated and the sprint is 7 cell..........I think its the best value.

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