Carbon prop

[Dan Hughes]

On masami's car from the warm ups the is a carbon main driveshaft. Does anyone know if this is commercially availible and what is the affect of the front rollbar going to do?

Car (http://www.yokomousa.com/phpBB2/album_pic.php?pic_id=583)

Im not sure if the link will work

[johnbull]

On masami's car from the warm ups the is a carbon main driveshaft. Does anyone know if this is commercially availible and what is the affect of the front rollbar going to do?

Car (http://www.yokomousa.com/phpBB2/album_pic.php?pic_id=583)

Im not sure if the link will work

Dan. The link didn't work for me.

PROP SHAFT. There are various possibilities. Yoke make a graphite one but it is too weak for modified racing - OK for stock. Tobee Craft make alighter alloy one which is what I have now settled for.

Before either of these were available I shortened a TC3 graphite shaft. It worked perfectly well.

I understand there's another graphite one available, made by Bomber. I have the Bomber shaft on my son's mod TC3 and it is brilliant. Must get a Yoke one now.

[johnbull]

Here's a pic of my Yoke.

[johnbull]

Sorry. Wrong pic. That's only half my Yoke. Try this.

[A Gower]

hi.

john is the rayspeed chassis striffer than the original yokomo chassis which is very flexy.

and is the steering (ackermam bit) mouted further back as on the original the ball studs kept on catching on the rear wishbone mount (front of car, front rear)

also how have you got on with it, have you found that it is generally better than the original?

many thanks
A Gower

ps, can the carbon prob shaft handle 19t?

[johnbull]

Right, lets see if I can answer them all.

The chassis on my car is one I cut myself. I cut it from 3.8mm carbon fibre, which is much thicker than both the SSG and the Rayspeed chassis.

The SSG is the softest and "flexiest" chassis of the lot. The Rayspeed is slightly thicker - I'm not sure if it's 2.5 or 3mm. but quite a bit more rigid. The most rigid of the Yoke SD chassis is the CGM tub chassis. The reason I cut my own was because when I made it the CGM was still non existant. Certainly as flat chassis go mine is the most rigid, but then it should be with that thickness.

The Rayspeed chassis has the steering pivots about 3mm further back. As you say this does stop the steering mechanism hitting the rear pivot bar. It also has the added advantage of giving more steering ackerman.

How have I got on with it. Yes definately better than the SSG chassis. The SSG chassis flexed far too much, had the problem with the binding steering levers, and had the cells placed too far back for my liking. This one is so much better. It stays right even after a good bump and just doesn't tweek.

If I broke it I would probably not bother going through the trouble of cutting another one, and would simply fit a CGM tub, but with that thickness if I broke it I think I would be better giving the whole thing up as a bad job, and take up something like golf !

Regards

Joe from sunny Malta.

[A Gower]

ok.

so why wouldnt you go for the rayspeed? and the problem with the cgm is that it is very heavy, and if you want to convert from ssg to cgm with the conversion kit it costs £100 and then if you want it lighter the lightweight chassis costs another £50. so i thought that the rayspeed is stiffer and better value as i can get it for £99?

any comments?
A Gower

[johnbull]

Given the choice of Rayspeed for 99 pounds and CGM for 100 pounds I know I would definately go for the CGM.

Like my chassis, the Rayspeed was made as an improvement on the original SSG. The CGM came later and is superior in every way.

[Dan Hughes]

Joe

How do you connect your cooling fan up??

[johnbull]

Joe

How do you connect your cooling fan up??

It's wired to the red and black speedo (batt) leads. This way you can turn the speedo switch off so that your fan keeps running. Good after a run to cool the motor.

As I write this I'm also following what's going on at Silverstone.

Mc Laren certainly seem to have sorted their cars out.

[A Gower]

hi,

but johnw ith the cgm conversion kit for 100 there car weighs way over the miniumum limit, and if i wanted to make it lighter. which i do, then i need to spend another 50 on lightwieght chassis? dont suppose you no exactly what ALL the parts in the conversion kit are INCLUDING screws and everything?

suppose the easist way to find that out is to get a copy of the instructions that come with it, anyone no where i can find a copy or has anyone got a copy they can scan and send me? to: andrew_gower2003@hotmail.com


many thanks
A Gower

[Dan Hughes]

you would need to find:
chassis
chassis braces
suspension mounts
motor cam and mount
whole steering rack
servo saver
shock towers
2 extra king pins
and rear bumper

but you can get a whole titanium screw kit.

I would send you the manual but its over 12meg and in japaneese.
Hope this helps.

[Dan Hughes]

Here are all the Part numbers and descriptions

SD202G Steering Rack
SD200H Servo Saver
SD300M Suspension Mounts
SD414 King Pins
SD002BG Steering Rack Cover and Chassis Braces
SD001R Rear Bumper
SD202P Steering Posts
SD017TG Front and Rear Shock Towers
SD304M Motor Mount
SD304MS Motor Screws
SD001MGL Lightweight Chassis
SD203 Servo Mounts
SDTSSM CGM Titanium screw kit

You use all the existing suspension, drivetrain and bumper and you will have one turnbuckle left.

[johnbull]

The CGM is indeed heavier than the SSG or for that matter the Rayspeed, but assuming you are using modern, and therefore small and light electrics, the car shouldn't be too much over the 1500 gram minimum weight limit.

A set of titanium screws should bring it very close to that limit and you will have the best car in the Yoke SD range.

I'm not too keen on the lightweight CGM chassis. I hate the holes under the electrics and would rather suffer a bit more weight in the knowledge that my electrics aren't going to fly our on the first impact.

[A Gower]

Dan. The link didn't work for me.

PROP SHAFT. There are various possibilities. Yoke make a graphite one but it is too weak for modified racing - OK for stock. Tobee Craft make alighter alloy one which is what I have now settled for.

Before either of these were available I shortened a TC3 graphite shaft. It worked perfectly well.

I understand there's another graphite one available, made by Bomber. I have the Bomber shaft on my son's mod TC3 and it is brilliant. Must get a Yoke one now.


have "bomber" got a website?

A Gower