First test of my prototype

[SHY]

Originally Posted by hottuna

I've never said it was a new idea.

Originally Posted by hottuna

X7, i did the math

I've been working on a new idea

...no, of course you didn't!

Just kidding, enjoy your project Søta Bror!

[daz]

Originally Posted by slow bob

I own a cougar sv and the steering is verry easy to work with and i like the fact you dont need to use a silly low profile servo ..

Yeah but cougars at sh*t, it need to be easy to work on as you are changing the servo horns week in and week out. I sold a perfectly good X6 to buy a bag of sh*t cougar what i totally regret so far.

[hottuna]

Originally Posted by SHY

...no, of course you didn't!

Just kidding, enjoy your project Søta Bror!

It was new for me, but not a new consept. I've understood you don't like what i do, just stop looking in this thread then.

[hottuna]

Originally Posted by Fabs

Hottuna: Nice job man, I know the guys who race the french car and I had the chance to try it, it's very very good indeed.

Sounds great
Do you know how much flex the chassis has? I think i will make mine quite soft.

[fastinfastout]

Originally Posted by Fabs

What's wrong with low profile servos? IMHO you'd have to be stupid to still buy regular size servos these days...

there is a huge difference between a low profile servo of 0.09 speed, compared to 0.06 for the quickest regular size servo. I will never go back to anything slower than 0.06 servos

[slow bob]

Originally Posted by daz

Yeah but cougars at sh*t, it need to be easy to work on as you are changing the servo horns week in and week out. I sold a perfectly good X6 to buy a bag of sh*t cougar what i totally regret so far.

I Think you should look at the purple metal servo horns savox make if you are having problems with the plastic horns or just stop crashing into things

[hottuna]

Some progress I have little time to spend on the build, but finally all parts for the rear end are ready, and bolted on the CF plate.

[Fabs]

Originally Posted by fastinfastout

there is a huge difference between a low profile servo of 0.09 speed, compared to 0.06 for the quickest regular size servo. I will never go back to anything slower than 0.06 servos

???

As far as I know there isn't any servo that does 0.06s/60°... And I've just double checked on all the manufacturer's websites...

[matdodd]

Originally Posted by Fabs

???

As far as I know there isn't any servo that does 0.06s/60°... And I've just double checked on all the manufacturer's websites...

The only one i can think of thats 0.06/60° is the HS-7940TH!
Its an awesome servo but there abit over kill for an RC car!

[Fabs]

HS as in a Hitec servo? I would not put one of these piece of c.... in any of my cars !!!!!

Besides it's 0.06V under 7.4V, goes up to 0.07 under 6V, and no one these days operate their servos direct from the cells...

[hottuna]

I'm not a fan of hyper fast servos anyway. If you're into fast steering, you can change the speed by adjusting the ratio.
The fact that i have to use a low profile one doesn't bother me.
The thread isn't about servos anyways, i just want to show my progress about my new car.

[matdodd]

No one mentioned operating voltage just speed
There designed to operate at 7.4v and there not just for RC use I sell loads for other applications!

O and good job with the car Hottuna

[super__dan]

KO 2123 is 0.06 though @ 7.2V with LIPO likely faster. I have 4 still as think they are great, specfically when recevier voltage is an issue (old Spektrum problem) being direct powered from the lipo is reasurring.

That said I have chosen to run a Savox in my 2wd now and KO2133 (older slower 6V) in the truck to smooth the steering out some.

I had a low profile Futaba servo and didn't like it, didn't feel it had the guts of the 2123 so went back.

[ttboyy2k]

Is the handling noticeably different over the stock battery location? Are the laptimes faster with the battery down the centerline of the chassis?

[hottuna]

Originally Posted by ttboyy2k

Is the handling noticeably different over the stock battery location? Are the laptimes faster with the battery down the centerline of the chassis?

Yes, and yes Better laptimes, but more important, i can run better laptimes without pushing 110%. It's so easy to drive.

[jetblack750il]

Originally Posted by Fabs

HS as in a Hitec servo? I would not put one of these piece of c.... in any of my cars !!!!!

Besides it's 0.06V under 7.4V, goes up to 0.07 under 6V, and no one these days operate their servos direct from the cells...

Savox SH-1290MG 0.05/60deg 5.00Kg/cm at 6V, 0.06/60deg 4.00Kg/cm at 4.8V

I like fast servo , I always can slow it down when needed.

[fastinfastout]

Originally Posted by Fabs

HS as in a Hitec servo? I would not put one of these piece of c.... in any of my cars !!!!!

Besides it's 0.06V under 7.4V, goes up to 0.07 under 6V, and no one these days operate their servos direct from the cells...

Originally Posted by jetblack750il

Savox SH-1290MG 0.05/60deg 5.00Kg/cm at 6V, 0.06/60deg 4.00Kg/cm at 4.8V

I like fast servo , I always can slow it down when needed.

JR Z9100S specs at 6v are
0.06/60deg
torque 180 oz/in (13 kg/cm)

there is no other servo that I know of that has both high speed and high torque.

I bought one for my car, and was that impressed that I'm going to buy them for all of my fleet

[YoungChazz]

We are constantly moving things back, not forward. Yes, especially on high-grip U.K. tracks you need weight up front, and the U.K. guys have gone to the saddle chassis because newer, heavier LiPo stick packs put too much weight outside, but for most tracks we are moving things back.

We tested a stick down the center chassis back in '07. It was horrible. We had to cut out far too much bracing and the flex skyrocketed. Some may like that -- the plastic chassis sells well and works well on some tracks. But we found the experimental chassis just too flexy; so much so that we were afraid it would break on big triple jumps.

[hottuna]

Funny how we like things different Chazz I'm sure the world would be boring if we didn't.

I've raced and trained with my non serious prototype build. Before i put it on the track the first time i was happy if it would hold a few laps, just to test the feeling.
It turned out well, and i choosed to race it the last 2 races in the swedish summer cup, i ended 2'nd on a low level grip, and 5'th on a high level grip track. Normally i struggle to get to the A-main in all races.
Lap times aren't much different, but the car is so nice and easy to drive, it feels like i'm driving at 80%, but still as fast as before, when i pushed 110%, and made mistakes.
We all have different driving styles, and this seems to suit me

My heart still belongs to X6, and the family, don't worry

[ttboyy2k]

Hey Hottuna!
I just put the lipo down the middle of my x-60 after reading about your success. I race in the USA. I will be trying it out this weekend and I will post my results and some pics. With the x-60 having a longer chassis u can leave the servo in the stock position. No need to put it upright.
Tommy