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Search: Posts Made By: BobW
Showing results 1 to 25 of 500
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Forum: Electric On-Road
12-31-2021, 04:37 AM
Replies: 1,751
Views: 504,711
Posted By BobW

https://cimg6.ibsrv.net/gimg/www.rctech.net-vbulle...

https://cimg6.ibsrv.net/gimg/www.rctech.net-vbulletin/560x434/image_21_de047034608e1e657006a60745f0bb8647453e66.png
Forum: Electric On-Road
12-31-2021, 04:33 AM
Replies: 1,751
Views: 504,711
Posted By BobW

Camber gain versus RC height I would definitely...

Camber gain versus RC height I would definitely give the edge to RC height, since it affects the roll moment which in turn affects how quickly the car can respond to direction changes. I don't like...
Forum: Electric On-Road
12-30-2021, 10:49 AM
Replies: 1,751
Views: 504,711
Posted By BobW

I spent a fair amount of time testing high roll...

I spent a fair amount of time testing high roll centers on the MTC2 earlier in the year. It's all summarized on the RC Crew Chief FB page (https://www.facebook.com/BobWri). The best Setup I came up...
Forum: Electric On-Road
06-07-2021, 12:50 PM
Replies: 1,751
Views: 504,711
Posted By BobW

Not at the moment. Would need to model things in...

Not at the moment. Would need to model things in 3D which would take an enormous effort to add so unlikely it will happen.
Forum: Electric On-Road
06-06-2021, 10:29 AM
Replies: 1,751
Views: 504,711
Posted By BobW

Been doing some testing during lockdown since we...

Been doing some testing during lockdown since we are allowed private test sessions at our track. As a start I decided to look at the effect of raising the front & rear roll centers in isolation to...
Forum: Electric On-Road
03-28-2021, 11:03 AM
Replies: 1,751
Views: 504,711
Posted By BobW

Thought I would share a few of my experiences...

Thought I would share a few of my experiences with the MTC2 now that it has few club races on it. First and foremost this chassis is awesome, the handling is superb, so precise and highly adjustable....
Forum: Electric On-Road
02-23-2021, 07:30 PM
Replies: 1,751
Views: 504,711
Posted By BobW

I haven't compared exact shock angles but the...

I haven't compared exact shock angles but the MTC2 is similar to the T4. The MTC2 model is setup with 4mm shims on the shock mount as the maximum. This can be changes within the model if you feel the...
Forum: Electric On-Road
02-22-2021, 02:13 PM
Replies: 1,751
Views: 504,711
Posted By BobW

I wouldn't use them on the MTC1 would be too soft...

I wouldn't use them on the MTC1 would be too soft and resulting in a lot of chassis scrub and loss of corner speed.
Forum: Electric On-Road
02-22-2021, 12:55 PM
Replies: 1,751
Views: 504,711
Posted By BobW

You are 100% correct about laying down the shock...

You are 100% correct about laying down the shock effectively reducing the MR and making the suspension softer. I just wanted to keep it simple. To be correct the MR will be modified by the Cosine of...
Forum: Electric On-Road
02-22-2021, 11:28 AM
Replies: 1,751
Views: 504,711
Posted By BobW

I will try to explain. First the Mugen...

I will try to explain.

First the Mugen springs are much softer than what we are accustomed to with other chassis. Since Xray springs have the same inside diameter and the same wire diameter its'...
Forum: Electric On-Road
02-21-2021, 02:54 PM
Replies: 1,751
Views: 504,711
Posted By BobW

Perhaps a legend in my own mind.:nod: I only got...

Perhaps a legend in my own mind.:nod: I only got to run 1 pack through my MTC2 before I clipped a barrier and broke the steering rack. Never had that happen before. The car was very good with lots of...
Forum: Electric On-Road
02-21-2021, 06:20 AM
Replies: 1,751
Views: 504,711
Posted By BobW

Correction! I went back and remeasured both...

Correction! I went back and remeasured both minimum and maximum. Minimum distance went down, maximum went up slightly. Dxb430 spur/pinion combos are now within the range.
Forum: Electric On-Road
02-21-2021, 05:48 AM
Replies: 1,751
Views: 504,711
Posted By BobW

I used a motor without cutouts in the can so the...

I used a motor without cutouts in the can so the minimum center to center of the shafts was limited by the motor hitting the top deck. If the motor you are using has cutouts you may be able to get...
Forum: Electric On-Road
02-19-2021, 05:55 AM
Replies: 1,751
Views: 504,711
Posted By BobW

I realize that but figured the guys who need to...

I realize that but figured the guys who need to shim to get to their target GR would appreciate the chart going lower.
Forum: Electric On-Road
02-19-2021, 04:28 AM
Replies: 1,751
Views: 504,711
Posted By BobW

Was looking for a gear ratio chart for the MTC2...

Was looking for a gear ratio chart for the MTC2 and couldn't find one so I created one. I used what I feel is a typical range for pinion/spur.
Forum: Radio and Electronics
10-31-2019, 10:48 AM
Replies: 304
Views: 76,887
Posted By BobW

More timing equals more speed as you are...

More timing equals more speed as you are essentially increasing the motor Kv value. The down side is the motor is less efficient so it will heat up more. The graphs below compare the acceleration...
Forum: Electric On-Road
09-19-2019, 08:02 AM
Replies: 871
Views: 173,104
Posted By BobW

To include the effect of diff height requires the...

To include the effect of diff height requires the torque being delivered to the front/rear wheels to be added. This effect is a function of the tension in the belt and the height at which it is...
Forum: Electric On-Road
06-21-2019, 04:02 AM
Replies: 871
Views: 173,104
Posted By BobW

ATM the only thing that shows improved stability...

ATM the only thing that shows improved stability in the chart is front Kickup/Caster. Changing front/rear toe and shock oil or pistons would also change stability, I just haven't figured out how to...
Forum: Electric On-Road
06-05-2019, 06:12 AM
Replies: 871
Views: 173,104
Posted By BobW

RC3 new version

RC Crew Chief Version 4.3.2 has been released. The update will install automatically the second time you open the program. Once again this is a free update for licensed users.

Highlights:
1....
Forum: Electric On-Road
04-04-2019, 05:08 AM
Replies: 871
Views: 173,104
Posted By BobW

The gas chamber volume has to be very small to...

The gas chamber volume has to be very small to get a large enough pressure change for the pneumatic spring effect to become significant. That said if you increase the shock Hc value by a factor of 10...
Forum: Electric On-Road
04-03-2019, 02:30 PM
Replies: 871
Views: 173,104
Posted By BobW

Increasing the volume of the chamber above the...

Increasing the volume of the chamber above the bladder would reduce the pressure change in the air chamber above the shock bladder. Try it and see what happens. Doubtful you will see much change...
Forum: Electric On-Road
03-18-2019, 10:26 AM
Replies: 871
Views: 173,104
Posted By BobW

Changes to motor mounting position are handled...

Changes to motor mounting position are handled through the CG position so first thing is to make sure this is entered correctly. Motor torque reaction is not handled by RC3.

That said if you...
Forum: Electric On-Road
12-27-2018, 08:16 AM
Replies: 871
Views: 173,104
Posted By BobW

The default points represent all the positions...

The default points represent all the positions for the front and rear blocks assuming the pin is located in the same location front and rear. If you are using different blocks for the front/rear then...
Forum: Electric On-Road
12-27-2018, 04:56 AM
Replies: 871
Views: 173,104
Posted By BobW

The points represent the different position for...

The points represent the different position for the hinge pin inserts. If you double click the image you can zoom in to see more detail. You can also add more points using the chassis...
Forum: Electric On-Road
12-20-2018, 12:45 PM
Replies: 871
Views: 173,104
Posted By BobW

If you can accurately measure the rate that would...

If you can accurately measure the rate that would definitely be the value to use.

Most springs are made from high carbon steel or music/piano wire. There are lots of other materials that can be...
Showing results 1 to 25 of 500
 
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