i did read the link it told me a lot but it did not ancer the question about the gear sliding on the shaft or the whole shaft sliding and limiting the curent is out of the question im tying to build on a very low budgit so is there any other motors that will work that i can pickup at a scrap yard thaks for the help one of you said wiper motors are good and you can wiper motors at a scrap yard to right thanks for the help