R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 06-10-2013, 09:49 PM   #1156
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

I just got tamiya blank 6 whole pistons . What size should I drill the holes and what weight oil for norcal running modified? I'm running blue springs all around.
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Old 06-10-2013, 09:51 PM   #1157
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

Fred is awesome. Always helpful and always positive.
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Old 06-11-2013, 08:45 AM   #1158
Tech Master
 
jag88's Avatar
 
Join Date: Nov 2003
Posts: 1,075
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by mxgregg View Post
I just got tamiya blank 6 whole pistons . What size should I drill the holes and what weight oil for norcal running modified? I'm running blue springs all around.

1.3 on the hole dia.

Not sure on the oil. Hara ran 2000 at the WC but that's Hara ...

Do you have a part # on those Tamiya pistons ?
Thanks.
jag88 is offline   Reply With Quote
Old 06-11-2013, 08:51 AM   #1159
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

Tamiya # 42165


Quote:
Originally Posted by jag88 View Post
1.3 on the hole dia.

Not sure on the oil. Hara ran 2000 at the WC but that's Hara ...

Do you have a part # on those Tamiya pistons ?
Thanks.
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Old 06-12-2013, 09:18 PM   #1160
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

I just stripped out a 20 tooth pulley. I see they come in 18, 19, 20 What are the different sizes for and do you always have to use the 20 for the small back belt to keep the tension right? Are they to give you different drive ratios for the front wheels?
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Old 06-12-2013, 09:31 PM   #1161
Tech Elite
 
Fred Hubbard's Avatar
 
Join Date: Nov 2001
Location: Inglewood, CA
Posts: 2,675
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by mxgregg View Post
I just stripped out a 20 tooth pulley. I see they come in 18, 19, 20 What are the different sizes for and do you always have to use the 20 for the small back belt to keep the tension right? Are they to give you different drive ratios for the front wheels?
I've never used any other than the 20T pulley. Changing the pulley size will alter the internal drive ratio which will affect your FDR. Brushless motors tend to perform better the closer the internal drive ratio is to 2.0. You should be able to rotate the bearing eccentric to loosen or tighten the belt. You could also use the #2 eccentric as well to adjust the belt tension if the #5 doesn't get the job done.
__________________
Goodwine Racing - RC America - XRAY - HUDY - Sanwa - Motiv - GravityRC - BN Racing
Fred Hubbard is offline   Reply With Quote
Old 06-12-2013, 09:45 PM   #1162
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

Thanks Fred. Loving my tcxx at norcal.
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Old 06-12-2013, 10:19 PM   #1163
Tech Elite
 
Fred Hubbard's Avatar
 
Join Date: Nov 2001
Location: Inglewood, CA
Posts: 2,675
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by mxgregg View Post
Thanks Fred. Loving my tcxx at norcal.
__________________
Goodwine Racing - RC America - XRAY - HUDY - Sanwa - Motiv - GravityRC - BN Racing
Fred Hubbard is offline   Reply With Quote
Old 06-12-2013, 11:46 PM   #1164
Tech Champion
 
Korey Harbke's Avatar
 
Join Date: Oct 2002
Location: Redmond, WA
Posts: 6,053
Trader Rating: 13 (100%+)
Default

Double post.. My bad.
__________________
Pro Spec America/Apex RC - Team ORCA - Awesomatix USA - Roche RC USA - AVID - Sweep - Protoform - Pro-One RC - Slapmaster Tools - Hebiki Design Works - Turtlemaster Racing - Seattle RC Racers - Timezone Hobbies
Korey Harbke is offline   Reply With Quote
Old 06-12-2013, 11:49 PM   #1165
Tech Champion
 
Korey Harbke's Avatar
 
Join Date: Oct 2002
Location: Redmond, WA
Posts: 6,053
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by mxgregg View Post
I just got tamiya blank 6 whole pistons . What size should I drill the holes and what weight oil for norcal running modified? I'm running blue springs all around.
I can't confirm what you would use exactly with the tamiya pistons because of their different shape and dia, BUT... most of us are running drilling out the 1.1mm 6 hole pistons from HB to 1.2mm holes.

I'm currently running Pro Spec 1500cst, but I have heard a popular set to have on hand is Losi 80, 90 and 100wt oils. Losi oils are SUPER thick in general, so they are estimated to be in the 1000-1500cst range. I have some data on the oils that I measured a while ago on a Rheometer from work... I'll have to look for it.
__________________
Pro Spec America/Apex RC - Team ORCA - Awesomatix USA - Roche RC USA - AVID - Sweep - Protoform - Pro-One RC - Slapmaster Tools - Hebiki Design Works - Turtlemaster Racing - Seattle RC Racers - Timezone Hobbies
Korey Harbke is offline   Reply With Quote
Old 06-13-2013, 06:31 AM   #1166
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

Thanks Korey. Do you have a part number for the HB 6 hole pistons?
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Old 06-13-2013, 07:09 AM   #1167
Tech Elite
 
Fred Hubbard's Avatar
 
Join Date: Nov 2001
Location: Inglewood, CA
Posts: 2,675
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by mxgregg View Post
Thanks Korey. Do you have a part number for the HB 6 hole pistons?
HB 1.1mm 6 Hole Pistons
__________________
Goodwine Racing - RC America - XRAY - HUDY - Sanwa - Motiv - GravityRC - BN Racing
Fred Hubbard is offline   Reply With Quote
Old 06-13-2013, 07:13 AM   #1168
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

Thanks Fred. I'm going to try to install the Tamiya pistons on Saturday and if they don't work I will order the HB pistons.
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Old 06-13-2013, 07:33 AM   #1169
Tech Apprentice
 
Join Date: Dec 2010
Posts: 84
Default

Sorry but you're wrong. If use 18 or 19 pulley you have to change belts (front and rear) because with 2 eccentric and 5 too you are not able to set properly the belt tension. You need 170 and 63 t (front and rear belts).

Just tried a few days ago and with standard belts you can't use 18 or 19 t pulleys

Quote:
Originally Posted by Fred Hubbard View Post
I've never used any other than the 20T pulley. Changing the pulley size will alter the internal drive ratio which will affect your FDR. Brushless motors tend to perform better the closer the internal drive ratio is to 2.0. You should be able to rotate the bearing eccentric to loosen or tighten the belt. You could also use the #2 eccentric as well to adjust the belt tension if the #5 doesn't get the job done.
moraccio is offline   Reply With Quote
Old 06-13-2013, 07:46 AM   #1170
Tech Elite
 
Fred Hubbard's Avatar
 
Join Date: Nov 2001
Location: Inglewood, CA
Posts: 2,675
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by moraccio View Post
Sorry but you're wrong. If use 18 or 19 pulley you have to change belts (front and rear) because with 2 eccentric and 5 too you are not able to set properly the belt tension. You need 170 and 63 t (front and rear belts).

Just tried a few days ago and with standard belts you can't use 18 or 19 t pulleys
Reread what I wrote, no where did I state that it was a fact it would work.
__________________
Goodwine Racing - RC America - XRAY - HUDY - Sanwa - Motiv - GravityRC - BN Racing
Fred Hubbard is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hot Bodies TCX academygaz Electric On-Road 4798 09-09-2015 05:26 PM
HOT BODIES TCX SALE!!! Yokomo_Ant3 Australia For Sale/Trade 19 07-05-2012 08:25 PM
Best 1/10th scale electric car to buy WD40 Electric On-Road 68 04-18-2012 10:22 AM
What Have I Missed? Twism86 Electric On-Road 18 04-02-2012 03:33 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 05:49 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0