Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 999 / 749 > Quick action throttle mod

[khushy]

for £40 I have ordered a Venhill quick action throtte + cables + a few bits and bobs to fit it.

Will have a good go at fitting it at the weekend - but it seems pretty simple to me!

Surely to get less throttle twist all you have to do is fit a throttle with a bigger cam!!!

Big Cam = less travel = better useability??

Having spoken to ProTwins - who do a throttle mod using a 748/9** single cable throttle - they wrekon that they do the following . . . .

Replace Throttle Assemblywith 9** item
Replace Cables
Replace and modify the cam on the throttle bodies
Replace and modify the return spring on the throttle bodies

They say that you have to replace the spring to make the new assembly light - otherwise its excessively hard to twist.

I dont understand this bit at all.

I believe that I will have to cut a little bit of the sleeving from the cables (I am talking a few mm) to accomodate the slightly increased travel - but apart from that it must be a straight forward job.

I just need to understand the spring issue bit.

Comments gratefully accepted.

Khushy

[Loz]

Khushy, I'll be interested to see how this goes. Good luck and let us all know!

[andyb]

Ive got the 998 throttle on my 999. I recon the spring this is a smoke screen.......as the 998r springs are the same, albeit on the other side of the throttle body.

My conversion is the same as Nathanu's.

The most restrictive part of the job is the length of the 998 throttle cable, its too shortl, thats why you bstardise the 999 opening cable. I think a monster cable is slightly longer and may well be the answer!

[khushy]

My own cable!

Cant be that tricky.

Khushy

[andyb]

Originally posted by khushy
My own cable!

Cant be that tricky.

Khushy

Yeah i considered that, might be worth looking into the monster cable thing, you only need less than 10mm extra............... the ends are the same.
I allways find that original fitted cable ends are a somewhat better fit??

[butch890]

I have it on good authority that it is not a good idea to
A) fit a single weaker spring
and B) only use 2 cable systems.
the reason for this is due to the very high airflow over the butterflys can cause them to stay open at full revs-not the best thing to happen when you want to slow down.
butch

[Murray Mint]

Hi Loz still here how you doing.

Yes had mine done at Pro V's and like it very much, bit pricy but hayho there you go.

Murray Mint

[andyb]

Originally posted by butch890
I have it on good authority that it is not a good idea to
A) fit a single weaker spring
and B) only use 2 cable systems.
the reason for this is due to the very high airflow over the butterflys can cause them to stay open at full revs-not the best thing to happen when you want to slow down.
butch

Butch i know that was your sponsors view, but they have done JPMs bike, so.....................

[Loz]

Originally posted by Murray Mint
Hi Loz still here how you doing.

Yes had mine done at Pro V's and like it very much, bit pricy but hayho there you go.

Murray Mint

Hi Murray, keeping it sticky side down - on the bike, anyway

I like the mod you have. That's the one with the button that eliminates the free play, isn't it (or maybe I dreamt it?).

Take care, bestest to you and Bev.