| View previous topic :: View next topic |
| Author |
Message |
gearing1983
Joined: 08 Mar 2008
Posts: 63
|
 Posted: Mon Dec 22, 2008 10:13 pm Post subject: gearing |
 |
|
what gear ratio is good for coastal i fogot was it about 7.50 
|
|
| Back to top |
|
 |
CuttingEdge
Joined: 08 Mar 2008
Posts: 202
Location: In My Garage
|
| Posted: Tue Dec 23, 2008 7:41 am Post subject: |
|
|
Depends on the motor what motor are you going to run ?
Stock 27turn is about 6.5 ish
Brushless 13.5 is around the 4.5 mark
Brushless 10.5 is around the 4.9 mark
Can't remember what is about right for 19turn ?????
_________________
Sponsored By Demon Power Products & Schumacher UK
Numb Nuts Tri Club 2007 / 2008 Pro Stock Champion , CMCRC Brushless Champion 2008 , CMCRC Open Champion 2008 , Ansmann GP Stock vice champion 2009 |
|
| Back to top |
|
|
gearing1983
Joined: 08 Mar 2008
Posts: 63
|
| Posted: Tue Dec 23, 2008 9:21 am Post subject: |
|
|
| thanks mate for the advice |
|
| Back to top |
|
|
markw
Joined: 08 Mar 2008
Posts: 144
|
| Posted: Wed Dec 24, 2008 8:55 am Post subject: |
|
|
| the last time i used a 19turn i ran it about 5.1 ish |
|
| Back to top |
|
|
gearing1983
Joined: 08 Mar 2008
Posts: 63
|
| Posted: Mon Jan 19, 2009 4:08 pm Post subject: |
|
|
TREV here is the gear chart i got from GEARCHART.COM were shold i go from there im running 84 spur 28 pinion
the motor stats are
43,920RPM
6,100KV
POWERATING 1 STAR
220W POWER
93% EFFICIENTCY
MEASURED AT 7.2V
http://www.arroyoc.com/index.cfm?...;fromflash=Yes&Chartname=Xray T2&Transmission=1.7&Spur=84&Pinion=28&Tire=&RPM=&TargetRollout=No&ChartType=Gear Ratio&Type=Gear&Plot=mid |
|
| Back to top |
|
|
greyfox
Joined: 08 Mar 2008
Posts: 123
|
| Posted: Tue Jan 20, 2009 11:51 am Post subject: |
|
|
If your internal ratio is 1.7, as we discussed on Sunday, then you've got a FDR of 5.1 using the 84 spur and 28 pinion.
To get closer to the FDR most use for 13.5 around Coastal (4.5) then you could instal a 75 spur with the 28 pinion, or put a 31 pinion with the 84 spur. This then gives you 4.55 or 4.60 respectively.
_________________
Sponsored by - Mastercard |
|
| Back to top |
|
|
gearing1983
Joined: 08 Mar 2008
Posts: 63
|
| Posted: Tue Jan 20, 2009 12:47 pm Post subject: |
|
|
so another pinion it is then i get one before the next race thanks ian does it matter about the rpm with that motor because it was quite hot the last heat i raced????  |
|
| Back to top |
|
|
greyfox
Joined: 08 Mar 2008
Posts: 123
|
| Posted: Tue Jan 20, 2009 4:14 pm Post subject: |
|
|
Sorry to appear pedantic, but what does 'quite hot' mean?
At the next meeting whatever ratio you are running, get it out on the track for a few minutes, then bring it back in and we'll measure the temperature with a digital thermometer to get an accurate reading and work out from there what gearing to go to.
_________________
Sponsored by - Mastercard |
|
| Back to top |
|
|
CuttingEdge
Joined: 08 Mar 2008
Posts: 202
Location: In My Garage
|
| Posted: Tue Jan 20, 2009 4:41 pm Post subject: |
|
|
It was as Hot as you would want a Brushless to get !!!! It could of been undergeared or maybe the old 1Star motors need different gearing to our modern 13.5 's do .............
Id agree with Ian go with the pinion I told you to go with the 31 / 80 combo and try it for 2 and a half mins , check temp
HTH
_________________
Sponsored By Demon Power Products & Schumacher UK
Numb Nuts Tri Club 2007 / 2008 Pro Stock Champion , CMCRC Brushless Champion 2008 , CMCRC Open Champion 2008 , Ansmann GP Stock vice champion 2009 |
|
| Back to top |
|
|
gearing1983
Joined: 08 Mar 2008
Posts: 63
|
| Posted: Tue Jan 20, 2009 4:42 pm Post subject: |
|
|
you couldnt hold it for very long  cause it got a bit toasty 
|
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Join! (free) 
Profile
Log in to check your private messages
Log in
