Quick action throttle mod
 

I know a few folks have tried this on their 749/999(Murraymint, you still there mate?).

Question is, how are you getting with it? I never even considered one before, but a couple of things are making me question my decision - mainly, Donington Park (and some seriously quick Sunday Morning Blat lads I know).
Is the mod any good, usable on the road, etc? Anyone regret it? Where did you get yours and do you recommend it?

Thanks for any help here!

:puzzled::roll:

[Edited on 8-5-2005 by Loz]

Loz,

First thing I did after 30 miles was to swap the throttle assembly, well JHP did, they put the stock 9*6/998 throttle on heavier like I am used to and let turn to full throttle, you soon get used to it.

Hey Loz, nice to see you on the boards again. ;)

I've got the 998 single cable throttle mod done by Pro Twins. It certainly works in terms of achieving full throttle on a single handfull but it does take more twisting force than standard. It makes blipping for downchanges a bit tricky.

Thanks for the suggestions and info, JP and Rally (you mended yet, mate?).
On my mate's Guzzi Le Mans III, I needed two hands to operate the throttle - not so good in the twisties to be sure. Hope the mod for the 999 isn't similar!
:D

You're welcome to have a go on mine and see if you like it. I should have the parts to fix it this week :)

The foot is getting there. The third metatarsal is still mending and gets sore but at least I can walk properly now. I'm also back on the Triumph to get to work which saves me huge amounts of time.

What roughly is the cost of the mod?

Can't remember... but it wasn't cheap as it involves a couple of hours taking the airbox apart to get to the throttle bodies.

"It's not the parts, guv, it's the labour, see?" ;)

Thanks for the offer, mate! Be seeing around and about soon, no doubt, glad you're mobile again!

i did mine myself using the parts shown below.
the original cable was shortened and the plastic 90 deg bend was cut off.
i then used an adjuster from a mountain bike cable ( same size) and the 996 throttle assy
i messured the freeplay needed and then attached a new nipple to the cable .
bingo job done cost about 40 bucks.


the harder question to answer is did it make the bike better......


pros-
less hand movment to required to go from closed to fully open
cons-
i felt the fine feel i had with the throttle when passing the apex was a little lost ,ie it was all or nothing ,i played with the freeplay but made no difference

in the end i think you should not listen to me, but try it youreself :lol:

Nathan, thanks for your info and point of view. Cheers!

I am trying this . . .
 

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

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

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!

I am going to make . . .
 

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??

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

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

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

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.

:roll: