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Old 10-04-2008, 09:14 PM   #8536
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good day!
i need a little help
i bought a used BDM and lately rebuilt it. accidentally i mixed up the springs. i dont know whats for the front or rear since all the springs are white. the only thing different were the dots. how should i differentiate those? im still new to rc racing so i cannot feel the difference in spring stiffness..
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Old 10-04-2008, 09:44 PM   #8537
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good day!
i need a little help
i bought a used BDM and lately rebuilt it. accidentally i mixed up the springs. i dont know whats for the front or rear since all the springs are white. the only thing different were the dots. how should i differentiate those? im still new to rc racing so i cannot feel the difference in spring stiffness..
normaly stiffer in the Front softer in the rear (white springs with color code dot)
YS-1460L Black 14.50
YS-14575L Blue 14.80
YS-1455L Yellow 15.70
YS-1565L Pink 16.26
YS-15625L Green 17.00
YS-1560 Orange 18.50
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Old 10-05-2008, 04:50 AM   #8538
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Originally Posted by JasonC View Post
normaly stiffer in the Front softer in the rear (white springs with color code dot)
YS-1460L Black 14.50
YS-14575L Blue 14.80
YS-1455L Yellow 15.70
YS-1565L Pink 16.26
YS-15625L Green 17.00
YS-1560 Orange 18.50
does a larger number mean stiffer? thanks a lot
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Old 10-05-2008, 10:40 AM   #8539
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does a larger number mean stiffer? thanks a lot
the lower the number the softer the spring is and higher the number
is stiffer....
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Old 10-05-2008, 02:19 PM   #8540
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Originally Posted by JasonC View Post
normaly stiffer in the Front softer in the rear (white springs with color code dot)
YS-1460L Black 14.50
YS-14575L Blue 14.80
YS-1455L Yellow 15.70
YS-1565L Pink 16.26
YS-15625L Green 17.00
YS-1560 Orange 18.50
Should note these are for Yokomo springs, not the Rayspeed springs which come on the BDM. Unfortunately I do not know the difference between the BDM white springs from the color dots. They feel the same though, this was poorly designed.
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Old 10-05-2008, 02:50 PM   #8541
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Edited (question answered)

Last edited by Losiho; 10-05-2008 at 02:56 PM. Reason: question answered
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Old 10-05-2008, 02:50 PM   #8542
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Originally Posted by B18C Turbo View Post
Should note these are for Yokomo springs, not the Rayspeed springs which come on the BDM. Unfortunately I do not know the difference between the BDM white springs from the color dots. They feel the same though, this was poorly designed.
here are ratings for the rayspeed springs
Rayspeed
Spring Rating [lb/in]
Gray 19.90
Red 18.26
White 17.17
Yellow 14.87
Blue 14.29
Green 13.20
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Old 10-05-2008, 04:06 PM   #8543
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which BDM spring is stiffer, there both white but color coded one is pink and the other orange.

The pink spring has more tightly wound coils than the orange coded spring.
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Old 10-05-2008, 04:49 PM   #8544
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Default Yokomo Progressive Springs

B18C Turbo,

For Yokomo Progressive springs(white springs with color code dot)

YS-1460L Black 14.50 Softest
YS-14575L Blue 14.80
YS-1455L Yellow 15.70
YS-1565L Pink 16.26
YS-15625L Green 17.00
YS-1560 Orange 18.50 Hardest

If you are running a spool then the springs are normally softer on the front than what is run on the rear. This is to give more steering, run harder springs up front and you will push through the corner.

On my BD fitted with a TIR spool I am using white spring pink dot front and white spring blue dot rear.

Later

Calvin.

Hope this helps.

Last edited by caltek1; 10-05-2008 at 09:40 PM.
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Old 10-05-2008, 07:36 PM   #8545
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Originally Posted by caltek1 View Post
B18C Turbo,

For Yokomo Progressive springs(white springs with color code dot)

YS-1460L Black 14.50 Softest
YS-14575L Blue 14.80
YS-1455L Yellow 15.70
YS-1565L Pink 16.26
YS-15625L Green 17.00
YS-1560 Orange 18.50 Hardest

If you are running a spool then the springs are normally softer on the front than what is run on the rear. This is give steering, run harder springs up front and you will push through the corner.

On my BD fitted with a TIR spool I am using white spring pink dot front and white spring blue dot rear.

Later

Calvin.

Hope this helps.
thats the most helpful probably the best post i've ever seen on rctech. Where did you find that!?
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Old 10-05-2008, 09:46 PM   #8546
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Quote:
B18C Turbo ,which BDM spring is stiffer, there both white but color coded one is pink and the other orange.

The pink spring has more tightly wound coils than the orange coded spring.

Well you did ask which was stiffer in this post, just put in hardest and softest for you.

Also the previous post was saying to run harder spring up front, not done with spool.

Calvin.
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Old 10-05-2008, 10:21 PM   #8547
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Originally Posted by caltek1 View Post
Well you did ask which was stiffer in this post, just put in hardest and softest for you.

Also the previous post was saying to run harder spring up front, not done with spool.

Calvin.
yes yes! thank you Calvin! I wrote down this information and pasted it to my spring box. Thanks again!
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Old 10-05-2008, 10:53 PM   #8548
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martin,

Thanks for access to your blog. Have got some good setup tips from there. Is there any forth coming info regarding the new BD, now that Masami has proven it in Japan?

Francis M,

Have you tried the graphite rear diffs,as made by TOP. I purchased a set with the thrust bearing and smaller screw. I will be trying this diff on the weekend.

Has anyone tried drilling more holes into the pulley so that you use more diff balls, same as they are running in the 416? I was going to give it a go.

I was running the front Yokomo aluminium spool, but it chewed out very quickly. I have fitted the TIR spool, which I have found to be lighter and give heaps of steering. Advantage is you can also replace the outdrives.

It is absolutely necessary to get the high volume shock bodies. I currently have the standard bodies, cutting down the triangular piece and fitting upside down. What is the major benefit for the newer bodies. Slower action??

B18C Turbo,

Apologies, took your post wrong way. Glad to see you fixed your CVD problems.

Later

Calvin.
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Old 10-05-2008, 11:07 PM   #8549
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Quote:
Originally Posted by caltek1 View Post
martin,

Thanks for access to your blog. Have got some good setup tips from there. Is there any forth coming info regarding the new BD, now that Masami has proven it in Japan?

Francis M,

Have you tried the graphite rear diffs,as made by TOP. I purchased a set with the thrust bearing and smaller screw. I will be trying this diff on the weekend.

Has anyone tried drilling more holes into the pulley so that you use more diff balls, same as they are running in the 416? I was going to give it a go.

I was running the front Yokomo aluminium spool, but it chewed out very quickly. I have fitted the TIR spool, which I have found to be lighter and give heaps of steering. Advantage is you can also replace the outdrives.

It is absolutely necessary to get the high volume shock bodies. I currently have the standard bodies, cutting down the triangular piece and fitting upside down. What is the major benefit for the newer bodies. Slower action??

B18C Turbo,

Apologies, took your post wrong way. Glad to see you fixed your CVD problems.

Later

Calvin.



Calvin the high volume shocks pretty much elimenates the need for the triangle peices in the shock body... the original bodies is actually a little larger on the botom of the body so the triangle peices can fit. Cutting it down will give you more shock travel but the piston fit will be loose towards the bottom and will be inconsistent....

I have not tried the top version diffs. I have found the stock yok diff to be really consistent and never had a problem with it....

As for spools I use either the aluminum or the plastic spool with aluminum sleeve. As for wear I recommend using Tamiya anti wear grease...
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Old 10-05-2008, 11:21 PM   #8550
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Thanks Francis M,

I will order some of the larger shock bodies and give them a go.

I had glued the aluminium sleeve form my original plastic spool onto the Yokomo aluminium spool, however still had wear. I will stick with the TIR for now and purchase a couple of spare Yokomo ones for the spares box.

For the triangular piece I only cut the length down, not the width. I cut off approx 2mm. It still touches the shock inner body through the range of movement.

I am still not sure of how to make the shocks with zero rebound though.

Regards,

Calvin.
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