Newbie question

[chrissg]

I am the proud owner of a db01, but have had some issues with it. Mostly my engine is running to hot. So I need to gear it different. (and also the dampers are weak)

I calculated the ratio for the engine on gearchart, which indicates that 91t spr and 18/19t pinion would be best. The db01 is supposed to have a gear ratio of 2.055 (according go google results :P) if I'm not mistaken.
As far as I know the Tamya runs with 48pitch spur and pinion.

On to my question:
Can I use any pinion brand I like, Ie. Losi's 48p 18t pinion?

Or do I have to use a spesific brand?

Cheers,
Chriss

[shanks]

yes mate as long as same pitch i.e. 48dp any pinions are fine - double check it dosnt foul anything of course when you test fit it...

just a though but make sure belts arent too tight - i ran mine so they would lift up and down by about 15mm in total

[chrissg]

Originally Posted by shanks

yes mate as long as same pitch i.e. 48dp any pinions are fine - double check it dosnt foul anything of course when you test fit it...

just a though but make sure belts arent too tight - i ran mine so they would lift up and down by about 15mm in total

will do, and thanks

[Blackbeard]

What motor are you running?

The motor in my Durga runs hot too. I've just shortened the wiring to the esc and battery on the advice of expert, but the advice about making sure the belts are not too tight is sound too. Ran mine way too tight initially.

Perhaps also check that your diffs aren't slipping too, though you'd probably have melted them by now if they were loose. Have a look at the gear mesh as well - it's pretty tight in the Durga, but if it's too tight then that will put a lot of strain on the motor.

Tamiya pinions are the wrong pitch, btw - I found that out to my cost! Standard 48dp pinions work fine for me though.

[FERRETTI]

Originally Posted by Blackbeard

Tamiya pinions are the wrong pitch, btw - I found that out to my cost! Standard 48dp pinions work fine for me though.

Tamiya 0.5 (original Astute etc) and 0.4 (TTC etc) are the wrong pitch however Tamiya do make / supply 48dp pinions (with the DB01 kit) which are the correct pitch.

[dimblum]

You can change both the pinion and the spur if you wish (AE Kimbrough Spurs are 100% compatible - here is a link to a 81t spur as an example: http://www3.towerhobbies.com/cgi-bin...?&I=LXEAK2&P=7)

www.gearchart.com is excellent for charting the perfect pinion/spur combo for your motor. I wrote a quick walkthrough to use the site. Let me know if you need this info.

Dan