1717's back in stock for a VERY limited time.

[TexasSP]

I think I just dreamed up a use for mine. Looking at building a scale 6x6 beast. Thinking the 1717 on 4s will be perfect. This thing will be heavy so I need a ton of torque.

[1truckerdan]

CC thank you for the price break, some of us are very greatful for the chance to own these motors.

[1truckerdan]

The bore HAS to be dead center. Use a drill press!

Originally Posted by 1truckerdan

The bore HAS to be dead center. Use a drill press!

the drill will follow the existing hole, right?

Was more concern about the hardness of the pinion than getting it 110% straight, guess i just gonna give it a try. dont have an drill press, and dont want to bug other to help me

if i sand the shaft down from 6mm to 5mm, i think there will be more risk about getting it straight than drilling the pinion. atleast its better to risk a pion than the shaft.

[JERRY2KONE]

Originally Posted by freddy

the drill will follow the existing hole, right?

Was more concern about the hardness of the pinion than getting it 110% straight, guess i just gonna give it a try. dont have an drill press, and dont want to bug other to help me

if i sand the shaft down from 6mm to 5mm, i think there will be more risk about getting it straight than drilling the pinion. atleast its better to risk a pion than the shaft.

Yes the drill bit will follow the original hole, BUT a handheld drill will not give you a clean straight hole creating vibration. Sanding the shaft can work better and if you have to drill out the pinion use a drill press to keep the hole straight.

[1truckerdan]

A few have filed,sanded, or turned down the shaft so 5mm pinions will fit. The shaft is hardened. Take your time and do it right, because all the gears you use have to line up....

Tried drilling the pinion but quickly realised it was a lost case, new metall bit and it was just scratching the surface.

[brian015]

If you can use 14, 15, or 16t 6mm pinion, Kershaw Designs has them at a very reasonable price.

Otherwise I'd turn down the shaft to 5mm rather than attempt to drill out a pinion. Follow Neil's instructions:

Originally Posted by suicideneil

No worries, you can buy 6mm bore pinions, or you can just do like 99% of other guys did in your situation and grind the shaft down; all you need is padded vice and a metal file / dremel and some digital calipers. Stick the motor in a bag and poke the shaft through it to keep out the filings, then work back & forth along the shaft ( ahem.. ) and keep checking until your 5mm bore pinions fit snuggly. Either that, or sell your $70 motor for a large profit on a heli/ plane forum...

He doesn't say it explicitly, but you want to have the motor spinning while you hold the file up against it to turn it down - that should give you a perfectly round shaft.

[suicideneil]

It helps if the shaft is spinning yeah

There are a few threads around with great pictures, here is Linc's:

http://www.rc-monster.com/forum/show...&postcount=261

easy peasy

[1truckerdan]

I am just happy I got a couple this time. I didn't have the funds to get any when they sold out last time.
Thank the person for all of us that got a second chance before you shoot them.
Daniel

[1truckerdan]

but, the magnets in the ones that just sold out were from the " old batch" ......before the 400% increase in materials to make the magnets.
Again...... thank you
Daniel

[Pdelcast]

Originally Posted by 1truckerdan

but, the magnets in the ones that just sold out were from the " old batch" ......before the 400% increase in materials to make the magnets.
Again...... thank you
Daniel

True, true... But still, I could have sold just the magnets for more than $70.00 ..

[1truckerdan]

Now, Patrick........ you are sounding like a Chinese rare earth mineral salesman.
Daniel

Originally Posted by 1truckerdan

Now, Patrick........ you are sounding like a Chinese rare earth mineral salesman.
Daniel

First the Chinese government funded the mining of rare earth magnet making it artificially low priced, despite it having huge local environmental consciousness(this is one of the reason so few countries is mining).

If you purchased the minerals of any sort when the prices is low doesn't make the mineral less valuable

[Pdelcast]

BTW -- speaking of rare earths --

Prices down by about 15% from the highs. Magnet prices are still climbing (due to lag between raw material and processed product...)

But there is hope on the horizon!