cyclone tc gearing issues

[stevemorris]

hi all, im steve i recently joined the club juring the indoor meets at new milton and a few sundays at bashley, i was using a yokomo mr4tc but now ive moved on to a cyclone tc, the problem i have is choosing a pinion and spur gear, ive looked online and my internal drive ratio is 2.1667 but i cant remeber for the life of me how to wotk it out,ive looked on gearcharts.com but that confused me further

[keitheroonie]

Final Drive = (spur/pinion) x internal (diff gear/centre gear)


example; 60 spur, 40 pinion, 32 diff, 16 center

(60/40) x (32/16) = 3 (fdr)



HTH

[mattsedgley]

Hi Steve - If you're running the 17.5 losi start somewhere near 3.60 and check the temperature after about 2 - 3 minutes just to make sure it's not blisteringly hot.. if you can keep your hand on the motor then thats a good check in case you've not got a temperature gun!

this should help you also

www.arroyoc.com/index.cfm?fuseaction=utilities.plotchart2&showheader=No&fromflash=Yes&Chartname=cyclone%20tc&Transmission=2.1667&Spur=63&Pinion=38&Tire=&RPM=&TargetRollout=No&ChartType=Gear%20Ratio&Type=Gear&Plot=mid

[lesbaldry]

May 7, 2009 21:55:04 GMT @mattsedgley said:

Hi Steve - If you're running the 17.5 losi start somewhere near 3.60 and check the temperature after about 2 - 3 minutes just to make sure it's not blisteringly hot.. if you can keep your hand on the motor then thats a good check in case you've not got a temperature gun!

this should help you also

www.arroyoc.com/index.cfm?fuseaction=utilities.plotchart2&showheader=No&fromflash=Yes&Chartname=cyclone%20tc&Transmission=2.1667&Spur=63&Pinion=38&Tire=&RPM=&TargetRollout=No&ChartType=Gear%20Ratio&Type=Gear&Plot=mid

Yes 3.6 is a good 17.5 (depending apon speedo)starting point for out doors and somewhere close to 5.0 for short indoor tracks ....good luck any further probs ask away

There are some good on line free gear chart sites,just add your favored spur/pinion and internal ratio(2.166) and it will work it out for you

[oldtimeracer]

Hi Steve,

PM me what spur gears you have and I will print you off a ratio chart. It's easy done.

As others have said an FDR of around 3.5/3.7 for Bashley running a 17.5 is about right.

[samuraiblade]

im running a 68 spur , 40 pinion , which seemed good on my 17.5 as people saw , i might switch to a 38 pinion to see how that stands. i use www.gearchart.com to work mine out

for the cyclone TC its 2.16 transmission ratio , so the maths is

spur gear divided by pinion gear times ratio

for mine that ment 68 / 40 x 2.16 = 3.67

im gonna try 68 / 38 x 2.16 = 3.87 in the near future

[samuraiblade]

p.s i have lots of spur gears in 48dp and a 38 pinion in box if you need to pinch any , (60,68,69,72,73,75,83) spurs

so

[stevemorris]

cheers for all the replies and help,much appriciated .im gonna start with with the 68 spur and get a couple of pinions to suit and go from there see how it fits with my driving,after a few days i should find a comfortable gearing,