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Old 03-25-2014, 06:09 AM   #1171
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Hi Guys, I know Marcus is involved with developing the teamC GT8 and I am really hoping he could help by requesting team C release larger pinion gears. We all have the 17/21 gears but we really need 18/22 pinions!! Mainly in Aus the foam tyres we run are much smaller overall diameter than the rubber tyres, and what make things worse, as they wear down in size the car really looses top speed. It would really give us foam tyre running racers the ability to not have to give the engine a rest at half straight as it feels like it is stuck in first gear. It would also then give us the option to play with spur gears to fine tune gear ratios.

Also what life do you guys give for the one way in the 2 speed transmission. My GT car has run approx 2.5 hours and was just curios to know what life you guys are getting out of the one way.
Great thread guys it really has helped allot

Unfortunately odds are thats not going to happen and thats simply because it would only be your market that would use them, those pinions do not work well with the helical R+P. My suggestion would be to go the other way and install the Straight cut R+P and go with the 46/43 spur gears. What is the diameter of the foam tires, i can figure out the roll out or just use this formula: I have found that a second gear roll out around 1.51 is really good
http://www.scriptasylum.com/rc_speed/rollout_ratio.html

The old standard oneway bearing is not very good, the new kits come with an extra HD unit and i sell them as well. I went through the entire season last year with one bearing, I have found that kyosho ball dif grease works the best.
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Old 03-25-2014, 06:24 AM   #1172
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BM I just read on redrc about the Reds clutch that it's designed to decrease wheel spin for offroad. I assume that such a clutch is designed to engage at low RPMs. In GT traction is usually very high because asphalt offers a large amount of grip compared to dirt. It will make the car easier to drive though. But for given track conditions (like lets say a prepped track on a race day) a clutch that engages early will cause your engine to overheat and underperfom, unless you are geared very short.
Hope this helps.
Thanks for the insight Joe. I will check that out and see how it goes.

It may engage too early by the sounds of it. We'll see.
Will be putting it on the new engine soon.... having to work silling hours at the moment so no time to do anything hobby wize

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Old 03-25-2014, 06:27 AM   #1173
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Yea, first thing i had to do when testing the new gear ratios was tighten up the BUKU clutch, it bogged really bad before the adjustments.

THe reds clutch has two settings on it, not sure what they are though.
Yes. I did see there were two settings for the REDS clutch. Will try them both and see if the "stiffer" setting lets the clutch engage at a high enough rpm.

Thanks for the input Marcus. Good to hear your new two speed is working out for you. Hopefully, if all goes well, we will see extra speed from the Team C GT's at the Byrons race this year at Joliet.

Will see you there if you go again

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Old 03-25-2014, 07:34 AM   #1174
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Yes. I did see there were two settings for the REDS clutch. Will try them both and see if the "stiffer" setting lets the clutch engage at a high enough rpm.

Thanks for the input Marcus. Good to hear your new two speed is working out for you. Hopefully, if all goes well, we will see extra speed from the Team C GT's at the Byrons race this year at Joliet.

Will see you there if you go again

Regards
BM
I think with the stock gearing you will be fine, Frenchie was saying that with the shorter ratios it may not work as good. I am sure the springs that come with it can be changed.


I will be at Byrons for sure!! love that track!
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Old 03-25-2014, 05:25 PM   #1175
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Unfortunately odds are thats not going to happen and thats simply because it would only be your market that would use them, those pinions do not work well with the helical R+P. My suggestion would be to go the other way and install the Straight cut R+P and go with the 46/43 spur gears. What is the diameter of the foam tires, i can figure out the roll out or just use this formula: I have found that a second gear roll out around 1.51 is really good
http://www.scriptasylum.com/rc_speed/rollout_ratio.html

The old standard oneway bearing is not very good, the new kits come with an extra HD unit and i sell them as well. I went through the entire season last year with one bearing, I have found that kyosho ball dif grease works the best.
Thanks Marcus,
The tyre diameter of new foam tyre is 100mm
But after 30 minutes it is down to 90mm diameter and down to as small as 84mm (rim size is 79)
I think the best thing we can do is run the team c straight cut gears (13/43)on the diffs and then run 16/48 first and 20/46 for second.
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Old 03-25-2014, 05:41 PM   #1176
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Thanks Marcus,
The tyre diameter of new foam tyre is 100mm
But after 30 minutes it is down to 90mm diameter and down to as small as 84mm (rim size is 79)
I think the best thing we can do is run the team c straight cut gears (13/43)on the diffs and then run 16/48 first and 20/46 for second.

with 90mm tires and 43/20 that puts you at 1.53 roll out, thats pretty good. i would think that if you start them off at say 95mm it will be pretty good. I can make 47/44 spurs but any bigger than that and the pitch diameter becomes an issue.
47/44, straight cut gears and 16/20 pinions should get you where you want to be. Now those spurs will have to be custom made so you guys as a group will need to purchase them in quantity to get the price down to the normal 35 a pair.
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Old 03-25-2014, 05:56 PM   #1177
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with 90mm tires and 43/20 that puts you at 1.53 roll out, thats pretty good. i would think that if you start them off at say 95mm it will be pretty good. I can make 47/44 spurs but any bigger than that and the pitch diameter becomes an issue.
47/44, straight cut gears and 16/20 pinions should get you where you want to be. Now those spurs will have to be custom made so you guys as a group will need to purchase them in quantity to get the price down to the normal 35 a pair.
As a group mate what's the quantity there are three of us running team c gt8. In the club
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Old 03-25-2014, 06:38 PM   #1178
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As a group mate what's the quantity there are three of us running team c gt8. In the club
IF you guys together order at least 4 sets(total) at the same time that is fine. thats one set each and one extra although personally since you guys are so far away i would order more extra's they last forever but freak accidents happen in nitro!
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Old 03-26-2014, 03:06 AM   #1179
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Hi Marcus,

What are the part numbers for the 47/44, straight cut gears please
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Old 03-26-2014, 03:07 AM   #1180
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what other parts are required for the 47/44, straight cut gears conversion
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Old 03-26-2014, 03:19 AM   #1181
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Hi Marcus is this the straight cut gears TU0883 13T/43T Gear that you mentioned
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Old 03-26-2014, 06:26 AM   #1182
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Hi Marcus,

What are the part numbers for the 47/44, straight cut gears please
Those are custom, will need to be ordered direct and in quantity. Not a part that i will produce for inventory

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what other parts are required for the 47/44, straight cut gears conversion
The 47/44 is a direct fit, no conversion needed.

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Hi Marcus is this the straight cut gears TU0883 13T/43T Gear that you mentioned
yes
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Old 03-26-2014, 06:57 AM   #1183
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I think with the stock gearing you will be fine, Frenchie was saying that with the longer ratios it may not work as good. I am sure the springs that come with it can be changed.


I will be at Byrons for sure!! love that track!
Just changed a word on your post to reflect what I meant.
What I meant in my earlier post is:
Short -> higher number ratios -> early engagement ok
Long -> lower number ratios -> early engagement not ok, engine will overheat.
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Old 03-27-2014, 02:22 AM   #1184
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Hi Marcus,

Thank you for the advise and assistance
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Old 03-28-2014, 06:18 PM   #1185
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The new Biltz body came today. I ordered the 1.2, my opinion it's like copy of the Alpha R3 but thicker with 1.2. If you destroy this body or any body in month you need some driving lessons.
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