252LikesTeam Associated B74.1
10-26-2020, 06:24 PM - Wikipost
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*B74.1 Tuning Parts Guide*
Hi all, with the B74.1 now available and with many important detailed changes to key tuning parts, I have put together a quick reference guide to allow you to compare B74 and B74.1 settings. I have included the typical outdoor settings we use but the changes translate across all surfaces. Any questions, please ask away  Original post here: https://m.facebook.com/story.php?sto...96568894020064 Thanks to Petitrc for also uploading this to the site: http://site.petitrc.com/setup/associ...ingPartsGuide/  
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11-11-2020, 04:59 PM
#166
Tech Rookie
Any small upgrades you would do with the 74.1D build?
11-11-2020, 05:47 PM
#167
11-12-2020, 04:47 AM
#169
Tech Master
As the suspension isn't solid the suspension absorbs some of the loading from the change in axle height which obviously causes a roll center shift.
That is the simplest way I can explain it without pictures which I don't have here right now.
11-12-2020, 06:23 AM
#170
Tech Adept
Suspension Geometry - White-Smoke
This page does a pretty good job of explaining suspension jacking.
This page does a pretty good job of explaining suspension jacking.
11-12-2020, 04:19 PM
#171
Thanks guys, I think I'm understanding it.
11-13-2020, 01:07 PM
#173
Tech Regular
AE seem to throw a car out and just hope it works. With all the issue that were evident from day one with the original, I guess thats what they do. 🤷♂️
Very frustrating. They have all the talent and resources to produce a killer car and team drivers are left to make a frankenstein car out of the two. Come on AE, you should know better.
11-16-2020, 04:51 AM
#174
Tech Master
I remeber watching a Video from Duatin Evans when the original B74 was released saying he hadnt had anytime with the car before it release and no input in its development.
AE seem to throw a car out and just hope it works. With all the issue that were evident from day one with the original, I guess thats what they do. 🤷♂️
Very frustrating. They have all the talent and resources to produce a killer car and team drivers are left to make a frankenstein car out of the two. Come on AE, you should know better.
AE seem to throw a car out and just hope it works. With all the issue that were evident from day one with the original, I guess thats what they do. 🤷♂️
Very frustrating. They have all the talent and resources to produce a killer car and team drivers are left to make a frankenstein car out of the two. Come on AE, you should know better.
What they are doing is looking at lots of different data sources and working out where they might find a fraction here, a fraction there for that particular track condition at that particular time.
That means that if they are at a track where having a little more droop, for example, helps stabilise a car on a section that directly effects how much speed they can carry through a particular critical sequence then they will make that change. We all would.
Next track they might find that amount of droop cause issues with traction rolling for example so they actually go less droop than the normal kit shock build.
I'm just using droop as an example here.
It really doesn't constitute a "Frankenstien" car.
For example I have DCVs in my box but rarely put them on my B74 as they take away a little steering and I like plenty.
I have every shock component combination that I ever use built up ready to go so if I get to a track where I need a shorter front shaft, for example, I can do that in the gap between my 5 minute practice and round 1.
Even though I have all of that stuff and pretty much every conceivable option part I often run the same base setup, particularly on the B74, because it just works.
When you are fighting for fractions that is what you have to do, assuming you have the knowledge to know what to do when of course.
What AE have to do in the kits is put out a car that works straight from the box to suit 80% of the situations 80% of the customers will put it through. That is REALLY difficult without including LOTs of parts and making the kit super expensive.
This is why there is now a "D" version of the B74 kit as there have been with the 2wd cars for a while .... one size most definitely doesn't fit all with the different track surfaces, layout styles, environmental conditions, tyres etc.
The current B74.1 specs will be perfect for a typical racer with typical skills running on typical tracks, lets be honest the typical driver builds the car to a setup sheet and doesn't touch it for many months.
To be fair I think that for the most part AE do a better job of the 80% for 80% than any other manufacture, for example my wet astro B6.2D is kit stock ZERO option parts other than 91494 which is personal preference, not even springs (I was lucky and got the 2x1.7 pistons before anybody asks).
11-16-2020, 07:54 AM
#175
Tech Master
iTrader: (17)
What AE have to do in the kits is put out a car that works straight from the box to suit 80% of the situations 80% of the customers will put it through. That is REALLY difficult without including LOTs of parts and making the kit super expensive.
This is why there is now a "D" version of the B74 kit as there have been with the 2wd cars for a while .... one size most definitely doesn't fit all with the different track surfaces, layout styles, environmental conditions, tyres etc.
The current B74.1 specs will be perfect for a typical racer with typical skills running on typical tracks, lets be honest the typical driver builds the car to a setup sheet and doesn't touch it for many months.
To be fair I think that for the most part AE do a better job of the 80% for 80% than any other manufacture, for example my wet astro B6.2D is kit stock ZERO option parts other than 91494 which is personal preference, not even springs (I was lucky and got the 2x1.7 pistons before anybody asks).
This is why there is now a "D" version of the B74 kit as there have been with the 2wd cars for a while .... one size most definitely doesn't fit all with the different track surfaces, layout styles, environmental conditions, tyres etc.
The current B74.1 specs will be perfect for a typical racer with typical skills running on typical tracks, lets be honest the typical driver builds the car to a setup sheet and doesn't touch it for many months.
To be fair I think that for the most part AE do a better job of the 80% for 80% than any other manufacture, for example my wet astro B6.2D is kit stock ZERO option parts other than 91494 which is personal preference, not even springs (I was lucky and got the 2x1.7 pistons before anybody asks).
Last edited by MrLean; 11-16-2020 at 02:26 PM.
11-16-2020, 02:17 PM
#177
Tech Regular
[QUOTE=RogerM;15715668]Remember that these pro's are chasing fractions of 10ths in the battle with each other and get MANY runs to dial the cars in to a particular track for a particular event (not the 1 x 5 minute practice that we often get in the UK for sure).
What they are doing is looking at lots of different data sources and working out where they might find a fraction here, a fraction there for that particular track condition at that particular time.
That means that if they are at a track where having a little more droop, for example, helps stabilise a car on a section that directly effects how much speed they can carry through a particular critical sequence then they will make that change. We all would.
Next track they might find that amount of droop cause issues with traction rolling for example so they actually go less droop than the normal kit shock build.
I'm just using droop as an example here.
It really doesn't constitute a "Frankenstien" car.
For example I have DCVs in my box but rarely put them on my B74 as they take away a little steering and I like plenty.
I have every shock component combination that I ever use built up ready to go so if I get to a track where I need a shorter front shaft, for example, I can do that in the gap between my 5 minute practice and round 1.
Even though I have all of that stuff and pretty much every conceivable option part I often run the same base setup, particularly on the B74, because it just works.
When you are fighting for fractions that is what you have to do, assuming you have the knowledge to know what to do when of course.
What AE have to do in the kits is put out a car that works straight from the box to suit 80% of the situations 80% of the customers will put it through. That is REALLY difficult without including LOTs of parts and making the kit super expensive.
This is why there is now a "D" version of the B74 kit as there have been with the 2wd cars for a while .... one size most definitely doesn't fit all with the different track surfaces, layout styles, environmental conditions, tyres etc.
The current B74.1 specs will be perfect for a typical racer with typical skills running on typical tracks, lets be honest the typical driver builds the car to a setup sheet and doesn't touch it for many months.
To be fair I think that for the most part AE do a better job of the 80% for 80% than any other manufacture, for example my wet astro B6.2D is kit stock ZERO option parts other than 91494 which is personal preference, not even springs (I was lucky and got the 2x1.7 pistons before anybody asks).[/
Time will tell wether the changes made to Rivkins car will be for a, particilar track at a particular time, as you say. Rivkin is particually in tune to setup and yet finds a setup and sticks with it like no other pro Ive seen.
Bare in mind, the towers and shocks are the biggest difference between the new and old car and yet Rivkin has swapped out towers on his first meeting which he’s published, and gone on to swap out shocks as well on his second. To me it doesnt look like he had time with the car to give any input before going into production, I could be wrong.
What they are doing is looking at lots of different data sources and working out where they might find a fraction here, a fraction there for that particular track condition at that particular time.
That means that if they are at a track where having a little more droop, for example, helps stabilise a car on a section that directly effects how much speed they can carry through a particular critical sequence then they will make that change. We all would.
Next track they might find that amount of droop cause issues with traction rolling for example so they actually go less droop than the normal kit shock build.
I'm just using droop as an example here.
It really doesn't constitute a "Frankenstien" car.
For example I have DCVs in my box but rarely put them on my B74 as they take away a little steering and I like plenty.
I have every shock component combination that I ever use built up ready to go so if I get to a track where I need a shorter front shaft, for example, I can do that in the gap between my 5 minute practice and round 1.
Even though I have all of that stuff and pretty much every conceivable option part I often run the same base setup, particularly on the B74, because it just works.
When you are fighting for fractions that is what you have to do, assuming you have the knowledge to know what to do when of course.
What AE have to do in the kits is put out a car that works straight from the box to suit 80% of the situations 80% of the customers will put it through. That is REALLY difficult without including LOTs of parts and making the kit super expensive.
This is why there is now a "D" version of the B74 kit as there have been with the 2wd cars for a while .... one size most definitely doesn't fit all with the different track surfaces, layout styles, environmental conditions, tyres etc.
The current B74.1 specs will be perfect for a typical racer with typical skills running on typical tracks, lets be honest the typical driver builds the car to a setup sheet and doesn't touch it for many months.
To be fair I think that for the most part AE do a better job of the 80% for 80% than any other manufacture, for example my wet astro B6.2D is kit stock ZERO option parts other than 91494 which is personal preference, not even springs (I was lucky and got the 2x1.7 pistons before anybody asks).[/
Time will tell wether the changes made to Rivkins car will be for a, particilar track at a particular time, as you say. Rivkin is particually in tune to setup and yet finds a setup and sticks with it like no other pro Ive seen.
Bare in mind, the towers and shocks are the biggest difference between the new and old car and yet Rivkin has swapped out towers on his first meeting which he’s published, and gone on to swap out shocks as well on his second. To me it doesnt look like he had time with the car to give any input before going into production, I could be wrong.
11-16-2020, 10:00 PM
#178
Time will tell wether the changes made to Rivkins car will be for a, particilar track at a particular time, as you say. Rivkin is particually in tune to setup and yet finds a setup and sticks with it like no other pro Ive seen.
Bare in mind, the towers and shocks are the biggest difference between the new and old car and yet Rivkin has swapped out towers on his first meeting which he’s published, and gone on to swap out shocks as well on his second. To me it doesnt look like he had time with the car to give any input before going into production, I could be wrong.
The 74.1 had a lot of team input but I can empathise that setup changes like this can be confusing. During development the team (like any manufacturing business) has to draw a line in the sand and release what they feel is the best package at the time.
Ray
11-17-2020, 07:14 AM
#179
Tech Regular
Just to be clear Rivkin is still using 74.1 towers which have a lower cg than the 74 (which is definitely a noticeable change to the car) but is using the longer bodies similar to the 74. The body length is a subtle change to bump/jump riding and handling, the lcg towers a noticeable effect.
The 74.1 had a lot of team input but I can empathise that setup changes like this can be confusing. During development the team (like any manufacturing business) has to draw a line in the sand and release what they feel is the best package at the time.
Ray
The 74.1 had a lot of team input but I can empathise that setup changes like this can be confusing. During development the team (like any manufacturing business) has to draw a line in the sand and release what they feel is the best package at the time.
Ray
Its a shame that if you were to want to run your car as Rivkin chooses to it takes all this alterations and expense. AE may have been better off waiting to see what would be a more
popular choice of setup before releasing the car. Especially the “d” variant. It may be that this setup is a very fluid thing and changes greatly from track to track, but as I say, I dont imagine it will.
11-17-2020, 07:44 AM
#180
Do you guys realize how many thousands of combinations of parts go into these setups?
As you change some things, other things change as well. Smaller shocks don't pack up as much as the larger ones, so after a few weeks (or days whatever) Rivkin found he liked a mix of the two shocks, I'm guessing.
I'm enjoying the new car, I haven't gotten the new shock tower setup as there are other ways to get that effect.
Is it frustrating? Absolutely. But the new cars are better than the old ones and the setups will continue to evolve. Just watch what the pros do, they experiment endlessly. Maybe this part of the setup goes away maybe not. Either way we aren't on his level, so change what you can for less money or try it yourself. Nobody is forcing you to run it. The rear shock change is mostly for damping/pack just in the rear, not like every bit of the setup hinges upon it.
Anyway I'm liking the new buggy so far. Im going to keep running it.
As you change some things, other things change as well. Smaller shocks don't pack up as much as the larger ones, so after a few weeks (or days whatever) Rivkin found he liked a mix of the two shocks, I'm guessing.
I'm enjoying the new car, I haven't gotten the new shock tower setup as there are other ways to get that effect.
Is it frustrating? Absolutely. But the new cars are better than the old ones and the setups will continue to evolve. Just watch what the pros do, they experiment endlessly. Maybe this part of the setup goes away maybe not. Either way we aren't on his level, so change what you can for less money or try it yourself. Nobody is forcing you to run it. The rear shock change is mostly for damping/pack just in the rear, not like every bit of the setup hinges upon it.
Anyway I'm liking the new buggy so far. Im going to keep running it.
