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Old 07-21-2005, 05:38 AM   #3001
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Firstly, MATT, have a good trip home.

Re 23 turn. I ran in a 23 turn class last season. Races were 8 minutes duration with a maximum cell capacity of 3300.

I always geared around 5.3. When I geared much higher I ended up dumping a bit towards the end.

Despite being an old man with failing eyesight, slow reflexes etc I still won 2 rounds out of 10, though that was probably more down to having an excellent car than anything else.

Actually I did 9 of the 10 rounds. The first 8 were with the CGM. The last was with the BD. It was it's first outing and I won first time out.

What a car !
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Old 07-21-2005, 08:09 AM   #3002
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Quote:
Originally Posted by lem2
I think I need to change my spur gear to be able to gear that low. And will rebuild the diffs the "BD" way. Having a hard time bringing the chasis down to 4.5mm, I'll just settle for 5mm.
Lay your shock down a hole...you can get down to 4.0mm without too much trouble. It seems that when you drop the CG on the car the shocks need to be shorter, so I also cranked down the shock ends (the small ones of cource) I believe I got them set @58-60mm or right in that ball park. That seemed to let the LCG get low.
Hope this helps,
-Shookie <><
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Old 07-21-2005, 11:35 PM   #3003
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Just finished up a Rayspeed Accord for our Summer Sizzler out here. Had to go with a TRU Yokomo BLU ... now for the detailin'...
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Old 07-22-2005, 05:57 AM   #3004
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Can someone help me with determining rollout on my BD? I'm going to post to the SD forum also, since I'd like to know how to determine rollout on my LCG also.

BTW, I'm racing on rubber tires rather than foam.

Thanks
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Old 07-22-2005, 07:43 AM   #3005
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I beleive that
http://www.gearchart.com/index.cfm?f...n=chart.create
has what you are looking for....
For the LCG use the SD as the gear ratio is the same.
Hope this helps,
-SHookie <><
Quote:
Originally Posted by Geppetto
Can someone help me with determining rollout on my BD? I'm going to post to the SD forum also, since I'd like to know how to determine rollout on my LCG also.

BTW, I'm racing on rubber tires rather than foam.

Thanks
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Old 07-22-2005, 09:51 AM   #3006
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Default Determining Roll Out???

Quote:
Originally Posted by Mr. Shookie
I beleive that
http://www.gearchart.com/index.cfm?f...n=chart.create
has what you are looking for....
For the LCG use the SD as the gear ratio is the same.
Hope this helps,
-SHookie <><
Thanks that will be very useful, but do you happen to know the formula for determining Roll Out?

My original question should have been:

- What is the transmission gear ratio for the LCG/SD and BD?
- What is the formula for determining Roll Out?

Thanks
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Old 07-22-2005, 10:46 AM   #3007
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Quote:
Originally Posted by Geppetto
Thanks that will be very useful, but do you happen to know the formula for determining Roll Out?

My original question should have been:

- What is the transmission gear ratio for the LCG/SD and BD?
- What is the formula for determining Roll Out?

Thanks
LCG=2.35
BD=2.00

RollOut= Tire Diameter x Pi (3.14) x pinion (# of teeth) divided by Spur (# of teeth) x Transmission Ratio
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Old 07-22-2005, 10:48 AM   #3008
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has anyone tried to sling the 415ms white belts in a bd yok yet ??

it looks a lil shorter but not positive ..

if not who sells cool belts for the bd car ...
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Old 07-23-2005, 09:32 AM   #3009
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Default To those who have an SD/CGM/SDW/LCG and BD!

To those who have an SD/CGM/SDW/LCG and BD!

You can print this, fold and have it laminated!

Sorry I only run 48pitch, the 70Tspur is 0.6module, from the Tamiya TA05, I have a complete set of pinions from 16-30(0.6) and the size of the Tamiya 70TSpur is as Big as the 78T 48pitch Spur so I decided to include it in my list. Just edit it if you wish!!

Hope this will be Helpful.
Peace and Happy Racing!
Lemuel Pia
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File Type: doc LCG-BD.doc (37.0 KB, 231 views)
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Old 07-23-2005, 02:25 PM   #3010
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That's an interesting chart Lem.

Thanks very much.

We use 64 dp almost exclusively these days. In fact i fit 116 x 64 dp spurs on the BD for mod motor use and 100 for stock.
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Old 07-25-2005, 10:07 AM   #3011
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quick question, during my race yesterday, right handers no problem but entering left handers off power the back end would want to come around, any suggestions. this was a kinda bumpy outdoor asphalt track, using cobalt 9x2 geared 78x21 rear shocks one hole from all the way out on tower and front shocks all the way in on tower. lower shock positions standard. kit springs
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Old 07-25-2005, 10:10 AM   #3012
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I had a simular problem and I found that it was tweak....to be exact it was suspention tweak....

Check to make sure that you have no tweak and if it still has the same problem I would rebuild your shocks...one might have a little leak or air bubble hidden under the piston...I had both before so check those things...at least those are the few I could think of....
Matt or Pops might have some other ideas...
-SHookie <><
Quote:
Originally Posted by Turtlemaster
quick question, during my race yesterday, right handers no problem but entering left handers off power the back end would want to come around, any suggestions. this was a kinda bumpy outdoor asphalt track, using cobalt 9x2 geared 78x21 rear shocks one hole from all the way out on tower and front shocks all the way in on tower. lower shock positions standard. kit springs
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Old 07-25-2005, 10:13 AM   #3013
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thanks, shook. i need to get a good board. i think my tamiya one has a tweak.
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Old 07-25-2005, 10:16 AM   #3014
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check my sale in the for sale thread..I hav ethe integy leveling setup board in there as well as other stuff.
-Shookie <><
Plus I will make you a better deal if you take the other items with the board....
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Old 07-25-2005, 01:23 PM   #3015
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Default Setup Help

I need some help with my setup on the BD (for asphalt, 19-turn, Cs-27gl's and 104 F air temp), On the first outing with the car, Superior hobbies, the rear was really loose. If I turned the wheel with any kind of speed the back end would come around. After standing the front shocks up and switching to the Red rayspeed springs I took the car to another track, Speedline, and it felt much better but it didn't seem to have enough steering. After putting the rear roll center higher the car handled better but still had too little steering. So any suggestions on how to get the steering I need while keeping the rear traction?

I do know that setups change from track to track but I don't really know what changes to make to this car for either track to make it handle better.
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